RU2414105C2 - Mobile station, base station and communication method - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention discloses a mobile station having a multiplexing module for multiplexing a competitive access channel and a non-competitive access channel, and a transmission module for transmitting the multiplexed competitive access channel and the non-competitive access channel to the base station. The competitive access channel and the non-competitive access channel are distinguished by the need to schedule on the base station before transmission. The competitive access channel comprises one or more of the following channels: a fast access channel, a standby channel and a synchronisation channel. The non-competitive access channel comprises one or more of the following channels: a shared data uplink and a shared control uplink. The fast access channel contains data of the information stream or control data having data length shorter than a predetermined value, or a combination of these data. The standby channel contains information for requesting scheduling of the non-competitive access channel. The shared data uplink contains data of the information stream or control data or a combination of these data.

EFFECT: few errors during radio transmission and high reliability during packet transmission.

51 cl, 37 dwg

Description

FIELD OF THE INVENTION

The present invention generally relates to the field of radio communications, in particular to a mobile station, a base station and a communication method for use in a packet-switched mobile communication system.

State of the art

In a conventional mobile communication system, a circuit-switched communication method is used, according to which a separate channel is allocated to each user. Such a method is suitable for a system oriented to interactive services of voice, moving images, etc. (see, for example, non-patent document 1). However, since the information stream will be transmitted in a “pulsed” mode in the form of IP packets due to the use of future generations of IP (Internet Protocol) protocols in the core networks of mobile communication systems, a packet transmission method is also desirable at the stage of radio transmission. In addition, if packet transmission is implemented in the radio transmission, it is necessary, for example, to reduce the delay in the radio transmission, reduce the power of the transmitted signal and increase the capacity of the communication channels. In addition, the reduction in radio transmission errors and the high reliability of packet transmission should be taken into account.

Non-Patent Document 1: Advanced Digital Mobile Communications, ed. Keiji Tachikawa, Kagaku-shimbun-sha., August 1994, pp. 160-178.

Disclosure of invention

The present invention is directed to the creation of a mobile station, a base station and a communication method to improve the efficiency of transmitting information on the uplink in a mobile communication system based on packet transmission.

In one embodiment of the present invention, there is provided a mobile station that includes a multiplexing module that multiplexes a competitive access channel and a non-competitive access channel, and a transmission module that transmits competitive and non-competitive access multiplexed channels to a base station. For a channel with competitive access, scheduling at the base station before transmission is not required, while for a channel with non-competitive access, planning at the base station before transmission is necessary. A competitive access channel includes one or more of the following channels: a quick access channel, a reservation channel, and a synchronization channel. A non-competitive access channel includes one or more of the following channels: an uplink public data channel and an uplink public control channel. The quick access channel contains information flow data or control data having a data size less than a predetermined value, or a combination of these data. The reservation channel contains non-competitive access channel scheduling request information. The upstream public data channel contains information flow data or control data, or a combination of these data.

According to the present invention, the uplink transmission efficiency of information in a packet based mobile communication system can be improved.

Brief Description of the Drawings

figure 1 shows a block diagram of a transmitter according to an example of the present invention;

figure 2 shows a block diagram of a receiver according to an example of the present invention;

figure 3 shows a block diagram of a spreading module used in a transmitter based on VSCRF-CDMA;

figure 4 shows a block diagram of a spectrum compression module used in a receiver based on VSCRF-CDMA;

figure 5 shows a graphical description of the principle of operation of the VSCRF-CDMA method;

6 shows examples of multiplexing a channel with a competitive access and a channel with non-competitive access;

7 shows an example of the distribution of the quick access channel;

on Fig shows an example of a distribution channel reservation;

figure 9 shows an example of the distribution of the upward synchronization channel;

figure 10 shows an example of the distribution of the pilot channel;

11 shows another example of a pilot channel allocation;

on Fig shows examples of the distribution of various channels;

13A shows an example of multiplexing a pilot channel and a public control channel;

FIG. 13B shows an embodiment in which uplink public control channels for multiple users are multiplexed by a local FDMA scheme and a CDMA scheme;

on figs shows a variant according to which uplink public control channels for multiple users are multiplexed according to the distributed FDMA scheme and the CDMA scheme;

on Fig shows an example of a channel allocation in accordance with the types of public control channels;

on Fig shows another example of a channel allocation in accordance with the types of public control channels;

on Fig shows another example of a channel allocation in accordance with the types of public control channels;

on Fig shows another example of a channel allocation in accordance with the types of public control channels;

on Fig shows another example of a channel allocation in accordance with the types of public control channels;

on Fig shows an example of a frequency band used in a communication system;

on Fig shows an example of another frequency band used in a communication system;

on Fig shows an example of another frequency band used in a communication system;

on Fig shows an example of another frequency band used in a communication system;

23 is a block diagram of a transmitter according to another example of the present invention;

on Fig shows a block diagram of a receiver according to another example of the present invention;

on Fig presents a detailed view of the module forming a public control channel;

FIG. 26 shows an embodiment in which AMC control is performed;

on Fig shows the relationship between the number of MCS and transmit power;

on Fig presents an example configuration of an upstream frame

directions of communication;

on Fig shows a variant in which the TPC;

on Fig shows a variant in which TPC is used without feedback;

on Fig shows TPC based on CQI;

Fig. 32 shows an example of a combination of control information and a transmission power control method;

on figa presents a block diagram of a process for determining the MCS uplink control channel and the configuration of the frame;

on figv shows an example of the relationship between the parameters of the radio;

Fig. 34 shows an example of a method for transmitting a public control channel from each transmit antenna.

Notation list

11, 12: modulation and coding module

13: multiplexing module

14: radio transmission module

15: TTI control module

113, 115: spectrum expansion module

21: radio transmission module

22: demultiplexing module

23, 24: demodulation and decoding module

25: TTI control module

223, 224: spectrum compression module

1602: code multiplication module

1604: repeating combination module

1606: phase shift modulus

1702: phase shift module

1704: repeating combination module

1706: spectrum compression module

231: pilot channel generation module

232: concurrent access channelization module

234: module forming the public control channel

236, 241: discrete Fourier transform module

237, 242: distribution module

238, 243: inverse fast Fourier transform module

244: demultiplexing module

251-253: switch

255-258: modulation and coding module

259: multiplexing module

The implementation of the invention

In one embodiment of the present invention, the competitive access channel and the non-competitive access channel are multiplexed and the competitive and non-competitive access multiplexed channels are transmitted to the base station. While high-speed communication is based on a channel with competitive access, communication with corresponding scheduling is also based on a channel with non-competitive access.

Multiplexing multiple competitive access channels corresponding to multiple users may include frequency multiplexing and a combination of frequency multiplexing and code multiplexing. When using a wide frequency band, the effect of frequency diversity can be obtained, which allows for high-quality signal transmission with reduced transmission delay.

The uplink frequency band can be divided into a plurality of frequency blocks, each of which includes one or more carriers, wherein one or more frequency blocks can be used to transmit a competitive access channel and a non-competitive access channel.

The synchronization channel may be transmitted less frequently compared to the quick access channel.

The upstream public control channel may contain one or more pieces of control information related to the planned upstream public data channel, control information related to the planned downlink public data channel, control information for changing the planning of the upstream public data channel, and control information for scheduling the downstream public data channel.

The uplink public data channel may preferably be transmitted to the mobile station via a high quality transmission path (transmission channel) that is different from the uplink control channel.

A pilot channel, an uplink public control channel, an uplink public data channel, and another pilot channel are time multiplexed and transmitted in elementary transmission time intervals.

For two or more users, the uplink public control channel may be multiplexed by frequency multiplexing, code multiplexing, or a combination of the two.

Example 1

The following describes examples according to the present invention. Specific values are used for illustrative purposes only; these specific values do not limit the present invention, unless otherwise indicated; In the practical implementation of the present invention, various meanings may be used.

1 shows a transmitter according to a first example of the present invention. Typically, a transmitter is provided in a mobile station as described in this example. The transmitter includes modulation and coding modules 11, 12, multiplexing module 13, radio transmission (RF) module 14, and transmission time interval (TTI) module 15.

Modulation and coding modules 11, 12 perform channel coding of the data supplied to modules 11, 12, and multi-level modulation of the encoded data so as to output modulated data. The parameters of the speed and levels of channel coding (modulation orders) of multi-level modulation can be different and depend on the types of signals entering the modules 11, 12. In the presented example, the channel with competitive access and the channel with non-competitive access serve as input signals. In general, scheduling a channel with competitive access at the base station before transmission is not required, while a channel with non-competitive access before transmission should be planned at the base station, which is described in detail below. A non-competitive access channel may be called a scheduled channel. Scheduling in this case means that the base station plans the distribution of resources (frequencies, codes, etc.) for their use in transmitting the signal to the respective mobile stations.

The multiplexing unit 13 multiplexes the encoded and modulated data. Depending on the circumstances, the pilot channel may also be multiplexed. Multiplexing may include time multiplexing, frequency multiplexing, or a combination thereof.

Radio transmitting (RF) module 14 performs multiplexed data processing to transmit this data through an antenna.

The transmission time slot control unit 15 sets a transmission time interval (TTI) depending on the requirements (or, for example, in accordance with a message from the base station) and reports the established TTI to the modulation and coding units 11, 12 or the like.

In addition, if code spreading is used, a spectrum spreading module 113 is provided between the modulation and coding module 11 and the multiplexing module 13, and a spectrum spreading module 112 is inserted between the modulation and coding module 12 and the multiplexing module 13.

Figure 2 shows the receiver according to this example of the present invention. Typically, a receiver is provided at the base station, as described in this example. The receiver includes a radio transmission (RF) module 21, a demultiplexing module 22, demodulation and decoding modules 23, 24, and a transmission time slot (TTI) module 25.

The radio transmitting unit 21 processes the radio signal from the antenna so as to convert the received signal into data in the video signal frequency band.

The demultiplexing unit 22 demultiplexes from the received signal a channel with competitive access and a channel with non-competitive access. If the received signal contains a pilot signal, the demultiplexing unit 22 also demultiplexes this pilot signal from the received signal.

The demodulation and decoding modules 23, 24 carry out a demodulation process that corresponds to multi-level modulation performed by the transmitter and a decoding process that corresponds to channel coding performed by the transmitter for a channel with competitive access and a channel with non-competitive access.

The transmission time slot control unit 25 corrects the transmission time interval (TTI) used in the communication.

In addition, if code spreading is used, a spectrum compression module 223 is built in between the demultiplexing unit 22 and the demodulation and decoding module 23, and a spectrum compression module 224 is built in between the demultiplexing module 22 and the demodulation and decoding module 24.

The competitive access channel and the non-competitive access channel transmitted by the mobile station are subjected to a channel coding process and a modulation process and are multiplexed and converted into a radio signal for transmission. At the base station, the radio signal is converted into a signal in the frequency band of the video signal and demultiplexed into a channel with competitive access and a channel with non-competitive access. As a result of this, each transmitted channel is received. The pilot channel, transmitted if necessary, is used at the base station to compensate for the channel in the received signal or the like.

In this example, uplink transmission is performed based on a single carrier transmission method. Therefore, compared to a multi-carrier transmission method, this allows a relatively lower PAPR (Peak to Average Power Ratio, peak-to-average power ratio) to be obtained. When transmitting the upstream signal, time division multiplexing (TDM), frequency division multiplexing (FDM), code division multiplexing (CDM), or any combination of these three methods can be used.

Single-carrier radio transmission can be implemented in various ways. For example, a DS-CDMA (Direct Sequence Code Division Multiple Access) scheme or a VSCRF-CDMA (Variable Spreading Chip Repetition Factors Code Division Multiple Access) scheme with multiple parameters can be used. repeat segments during distribution). In the VSCRF-CDMA scheme, the spreading modules located at 112, 113 may have the configuration shown in FIG. 3. In addition, spectrum compression modules located at 223, 224, which may have the configuration shown in FIG. 4.

Figure 3 shows a block diagram of a spreading module used in a transmitter according to the VSCRF-CDMA scheme. The spreading module includes a code multiplication module 1602, a repeat combining module 1604, and a phase shift module 1606.

Code multiplication module 1602 multiplies the transmitted signal with a spreading code. 3, a multiplier 1612 multiplies a transmission signal by a channelization code determined by a predetermined code spreading coefficient. In addition, a multiplier 1614 multiplies the transmission signal by a scrambling code. The code spreading factor SF can be set depending on the communication medium.

The repeating combining unit 1604 compresses the spread spectrum signal along a time axis and repeats the chips a predetermined number of times (equal to CRF). If the number of CRF repeats is one, then the configuration and operation of the repeating combining unit 1604 correspond to the conventional Direct Sequence-CDMA (DS-CDMA) method. However, in the case of CRF = 1, a phase shift in the phase shift module 1606 is not required.

The phase shift module 1606 rejects (shifts) the phase of the transmission signal at a predetermined frequency. Each mobile station has its own offset value.

Figure 4 presents a block diagram of a spectrum compression module used in the receiver according to the VSCRF-CDMA scheme. The spectrum compression module includes a phase shift module 1702, a repeat combining module 1704, and a spectrum compression code module 1706.

The phase shift module 1702 multiplies the received signal by the amount of shift, which is set individually for each mobile station, and demultiplexes the received signal by the signals corresponding to the mobile stations.

The repeating combination module 1704 expands (decompresses) the repeated data along a time axis to obtain decompressed data.

Spectrum code compression module 1706 performs spectrum compression by multiplying the received signal with the spreading codes of each mobile station.

Figure 5 is an explanatory description of the basic operations of the VSCRF-CDMA method. For simplicity of description, a specific group of data sequences with code spreading will be considered, expressed as d ₁ , d ₂ ..., d _Q , and the time period of each data element d _i (i = 1 ..., Q) is written in the form T _s . One data element d _i may be associated with one symbol or any other relevant information element. Such a group of signal sequences has a full time period T _s × Q. The signal sequence 1802 corresponds to the input signal to the repeating combining module 1604. This signal sequence 1802 is converted in such a way that this signal sequence 1802 is compressed along the time axis with a factor of 1 / CRF, and the compressed signal is repeated for a period of time T _s × Q. The converted signal sequence is indicated in FIG. 5 by the reference “1804”. Figure 5 also shows the time period of the guard interval. Compression along the time axis can be performed, for example, by using a frequency that is CRF times higher than the clock frequency used for the input signal. Then the time period of each data element d _i is compressed to T _s / CRF (but repeated CRF times). The compressed and repeatable signal sequence 1804 is output from the repeating combining module 1604, supplied to the phase shift module 1606, shifted by a predetermined offset amount, and output to the phase shift module 1606. The shift value is set individually for each mobile station so that the uplink signals corresponding to the mobile stations are mutually orthogonal along the frequency axis.

In general, the frequency spectrum of the uplink signal is shown in FIG. 5 with the reference “1806”; therein, the bandwidth indicated by the spread spectrum bandwidth may be occupied by a sequence of 1802 spread-spectrum signals (input from a repeating combining module 1604) if the sequence of 1802 spread-spectrum signals was transmitted without compression and repetition. The frequency spectrum of the compressed and repetitive signal (output signal of the repeating combining module 1604) has a plurality of frequency components arranged in a comb shape. Such a spectrum is typical for all mobile stations. When the spectra are shifted by an amount individual for the respective mobile stations, the frequency components of the respective mobile stations can be mutually orthogonal to each other. Compression along the time axis, repetition, and phase shift make it possible to expand the spectrum of signals corresponding to mobile stations discretely in the form of a comb over the entire frequency band, and to build frequency spectra having the shape of a comb on the frequency axis so that they are orthogonal to each other.

The receiver performs the reverse operations of the transmitter. More specifically, the received signal in the phase shift module 1702 is assigned a phase corresponding to a particular user, after which this signal is supplied to the repeating combining module 1704. The input signal is decompressed along the time axis, after which the decompressed signal is converted into a spread spectrum signal, which, in turn, is output from the repeating combining unit 1704. Spectrum compression module 1706 compresses the spectrum of the input signal by multiplying it by a predetermined spreading code.

Figure 6 shows examples of multiplexing channels with competitive access and channels with non-competitive access. In the TDM example, these channels are time multiplexed. Although the minimum time multiplexing element is a time period corresponding to one TTI in the example presented, any other time period can also be used. In another example, with the designation "FDM", these two channels are frequency multiplexed. The frequency blocks shown in this example are called fragments, frequency fragments, or resource blocks. In the General case, one fragment may include one or more carriers, which may also be called subcarriers. Since a single carrier method is used in one example of the present invention, one fragment in this case contains only one carrier. In another example, with the designation "TDM / FDM", channels with competitive access and channels with non-competitive access are multiplexed along the time axis and the frequency axis. The frequency band used in this system is divided into many frequency blocks, each of which can be defined as an element of resource allocation, retransmission of packets, or the like. In these cases, multiplexing is accordingly performed for each frequency block available for use by the user. In the transmitter shown in FIG. 1, various multiplexing methods can be used, including the three types of multiplexing shown in FIG. 6 using the multiplexing unit 13, the radio transmitting unit 14, and / or the spreading units 112, 113. The receiver shown in FIG. 2 can accordingly demultiplex the multiplexed signal using the radio transmission module 21, the demultiplexing module 22 and / or the spectrum compression module 223, 224.

The following describes the various channels transmitted on the uplink. These channels are mainly divided as follows: (A) - channel with competitive access; (B) - a channel with non-competitive access; (C) - pilot channel. Planning a channel with competitive access at the base station before transmission is not required, while a channel with non-competitive access before transmission must be scheduled at the base station. The competitive access channel includes one or more (A1) quick access channels, (A2) a reservation channel, and (A3) an uplink synchronization channel. A non-competitive access channel includes one or more (B1) uplink public data channels and (B2) uplink public control channels.

(A) Competitive Access Channel

The competitive access channel transmitted by the mobile station without scheduling at the base station may be transmitted by the mobile station at any time. The competitive access channel is preferably transmitted over a wide frequency band, which allows for a shorter transmission time. In addition, even if the signal quality in a part of the frequency band decreases, due to the wide frequency band, it provides a frequency diversity effect, and compensation for degradation of the signal quality by a power correction method or the like is not required. Although conflicts may arise between users, a concurrent access channel makes it easy to implement high-speed communications. While a Time Division Multiple (TDM) method can be used, as is the case with the current UTRA (Universal Terrestrial Radio Access, universal frequency terrestrial radio access), in order to reduce the number of conflicts between users, a frequency division method is used ( Frequency Division Multiple (FDM) and / or Code Division Multiple (CDM) method. However, if there is a conflict between users, then, if necessary, these users can re-transmit the channel with competitive access. The Frequency Division Multiple Access (FDMA) method may be a local FDMA method in which one continuous narrow frequency band is provided to one user, or a distributed FDMA method according to which the spectrum is composed of frequency components arranged at predetermined intervals . Frequency components are usually evenly distributed, but may also be unevenly distributed. The distributed FDMA option may be implemented, for example, based on the VSCRF-CDMA method.

(A1) Quick Access Channel

The quick access channel may contain a control message with a small amount of data, data stream information with a small amount of data, or both. One reason for the small data size is to reduce transmission delay. The control message may contain, for example, information about level 3 transitions. Data of a small data size information stream may contain, for example, e-mail having a small amount of information, game commands, etc. Since the quick access channel can be transmitted from the mobile station to the base station without of any reservation, the time of the transfer process is small. A quick access channel is transmitted on one or more frequency channels assigned in advance. The mobile station can receive messages from the base station on the downlink broadcast channel about which frequency fragment from the plurality of frequency fragments should be used when transmitting the quick access channel. The message may contain information that one specific frequency fragment from a plurality of specific frequency fragments should be used, or one or more specific frequency fragments from a plurality of certain frequency fragments should be used. The advantage of using more than one frequency fragment is that the conflict rate between users can be reduced compared to using only one specific frequency fragment.

Figure 7 shows an example of the distribution of the quick access channel. In the presented example, N _f frequency fragments and N _t TTI intervals are assigned to the quick access channel.

(A2) Channel reservation

The reservation channel contains non-competitive access channel planning request information. This information may include identifying information for identifying the mobile station, data types of the transmitted information stream (speech, image, etc.), data volume, information about the required quality (QoS, etc.), the transmit power of the mobile station, etc. d. The reservation channel is also transmitted in a frequency fragment (or fragments) assigned in advance. The mobile station may receive messages from the base station on the downlink broadcast channel about which frequency fragment of the multiple frequency fragments should be used to transmit the reservation channel. Preferably, the reservation channel is transmitted in a minimum resource allocation element (one frequency fragment and one TTI), as shown in FIG.

(A3) Uplink synchronization channel

According to an example of the present invention, the transmission of the uplink signal is performed in a single carrier manner in which equalization is performed to suppress multipath interference. The synchronization is preferably maintained in such a way that the synchronization of the reception of signals from various users is within a predetermined guard interval for effective alignment. For synchronization, the uplink synchronization channel is used. A mobile station transmits a plurality of symbols, each of which includes a significant symbol component and a guard interval component at a specific transmission interval time (TTI). The base station removes the guard interval component from the signal received from each mobile station and demodulates the content of the significant symbol component. Signals received with synchronization are demultiplexed into signals corresponding to mobile stations using the corresponding signal demultiplexing algorithm. The guard interval component may be formed in any suitable manner, such as a cyclic prefix (CP) method and a zero pad method. The uplink synchronization channel is transmitted in one or more frequency slices as previously assigned. However, since updating the clock synchronization is not necessary for each TTI, the uplink synchronization channel is transmitted relatively less frequently, as shown in FIG. 9. In addition, in many cases, an entire TTI is not required to transmit the uplink synchronization channel; although this depends on the amount of data of the synchronization channel.

In addition, the reception synchronization can be synchronized using the pilot channel, as described below. Thus, the constant availability of the synchronization channel and the pilot channel is not required.

(B) Non-competitive access channel

Non-competitive access channel transmission is carried out in accordance with the scheduling performed by the base station.

(B1) Upstream public data channel

The upstream public data channel may contain information flow data, layer 3 control messages, or both. The control message may comprise relay transmission information, information necessary for retransmission, or the like. The upstream public data channel is assigned one or more frequency fragments according to scheduling in the time domain or in the time and frequency domains. In this case, the distribution of resources is determined (planned) in the time domain or in the time and frequency domains by the base station so that the user who corresponds to the best transmission path (channel) has the preference when transmitting packets. The number of assigned frequency fragments is determined depending on the data rate, the amount of data, or similar characteristics of the packets that the mobile station should transmit. If there are many users who require a relatively low data rate, then one fragment can be shared among many users. On the other hand, if the volume of information flow for a specific user exceeds a predetermined size, then this user can occupy one fragment exclusively or use several fragments. If one fragment is used by multiple users, some kind of multiplexing is performed, so that the channels of these users in each individual fragment become orthogonal to each other. For example, a local FDMA or distributed FDMA may be used in a fragment.

In the general case, the information transfer element is TTI. Any kind of control channel is the "header" of each TTI. If the header is transmitted frequently, the data transfer efficiency of the information stream inevitably decreases. In this example, adaptive TTI length correction is possible. The longer the TTI, the less often the header is transmitted, and therefore, the higher the transmission efficiency of the data stream. On the other hand, if the TTI is short, a significant reduction in throughput can be avoided, which is preferable, in particular, in the case of an adverse transmission medium.

(B2) Upstream public control channel

The uplink public control channel transmits physical layer control messages and layer 2 control messages (FFS). The upstream public data channel is planned by the base station in such a way that the user having the transmission path (channel) of the highest quality receives an advantage in the transmission of packets. However, scheduling depending on the state of the channel in the case of a public uplink control channel is not necessary. However, for the uplink control channel, any type of link adaptation (or AMC, adaptive modulation and coding, adaptive modulation and coding) can be applied, as described below. The base station performs scheduling to avoid conflicts between public control channels, and assigns fragments and TTIs to each mobile station. For a public uplink control channel, the base station schedules according to the number of users. In order to maintain a low error rate in packets, it is desirable to provide high-precision control of transmit power. In addition, it is desirable to ensure high quality packet reception, which is achieved due to the effect of frequency diversity by transmitting an upstream public control channel in a wide frequency range.

More specifically, the uplink public control channel contains one or more parts: (1) control information associated with the planned uplink public data channel; (2) control information associated with a planned downlink public data channel; (3) control information for changing the scheduling content of the uplink public data channel; (4) control information for scheduling a downlink public data channel.

(1) the control information associated with the planned uplink public data channel is transmitted together with the uplink public data channel only when transmitting the uplink public data channel. The control information, which is also called the combined control channel, includes information necessary for demodulating a public data channel (demodulation method, channel coding rate, etc.), transmission element size, retransmission information, etc., and may be expressed by the amount of information, for example, 4 bits. The retransmission control information may include, for example, information about whether the packet to be transmitted through the uplink public data channel is a retransmission packet or a new packet, as well as information about the use case of the retransmission packet. For example, according to a first use case of a retransmission packet, the data of the retransmission packet may coincide with the data of the packet transmitted earlier (first transmission data); in contrast, according to a second use case of the retransmission packet, the data of the retransmission packet is different from the data of the packet transmitted previously. In the latter case, the packet may be accompanied by redundant information for error correction coding.

(2) the control information associated with the planned downlink public data channel is transmitted to the base station only when the downlink public data channel is transmitted by the base station and received by the mobile station. The control information indicates whether the packet in the downlink was received correctly (ACK) or incorrectly (NACK), and in the simplest case is expressed as one bit.

(3) control information that changes the scheduling content of the uplink public channel is transmitted to inform the base station of the buffer size and / or transmit power of the mobile station. This management information may be transmitted regularly or sporadically. The control information may be transmitted, for example, by changing the buffer size and / or transmit power. The base station may change the scheduling content to suit changing conditions at the mobile station. The buffer size and transmit power can be expressed by the amount of information, for example, 10 bits.

(4) the control information used to schedule the downlink public data channel is transmitted to inform the base station of the channel quality information (also called channel quality indicator (CQI)). The CQI may be, for example, a received signal-to-interference power ratio (SIR) measured by a mobile station. This information may be transmitted regularly or occasionally. For example, this information may be transmitted when channel quality changes. This control information may be expressed by the amount of information, for example, 5 bits.

(C) Pilot Channel

The pilot channel may be transmitted from the mobile station in a time division manner, a frequency division manner, a code division manner, or a combination of the three indicated methods. However, in terms of reducing the ratio of peak power to average (Peak to Average Power Ratio, PAPR), it is preferable to use the TDM method. By using the TDM method, the pilot channel and the data channel become orthogonal, therefore, the receiver can perform accurate demultiplexing of the pilot channel, and thus contribute to a highly accurate channel estimate. In particular, this option has the advantage of requiring a very accurate channel estimate, for example, for each antenna in a multi-antenna system, such as a MIMO system.

In this example of the present invention, a different channel estimate is used for mobile stations moving at high speed and for mobile stations not moving at high speed. To this end, a first pilot channel is being prepared for mobile stations not moving at high speed (in other words, mobile stations in a normal communication environment), and a second pilot channel for mobile stations moving at high speed, for example, up to several hundred km / h For each TTI, a certain number of first pilot channels are allocated. Preferably, at the beginning and end of each TTI, 2 first pilot channels are allocated. The first pilot channel can be used to estimate the channel and measure the quality of the received signal. In addition, the first pilot channel can be used to detect timing synchronization. The second pilot channels are distributed in one or more sections of the TTI depending on the speed of the mobile station in question and the state of the transmission path (channel). The distribution of the second pilot channel depending on speed, etc. is not performed. More specifically, the second pilot channel is not always transmitted, and thus the second pilot channel is an additional channel, while the first pilot channel is always transmitted. The number of first and / or second pilot channels and sections into which the first and / or second pilot channels are distributed are randomly determined from predetermined distribution candidates.

Figure 10 presents an example of a distribution of pilot signals, in which only the first pilot channels are included. According to the example shown, eight symbols (data) are included in one TTI, the first two pilot channels are assigned to the upper and final symbols. The reference "CP" in the drawing indicates the guard interval according to the cyclic prefix. The designations "data ₁ ", "data ₂ " ... correspond to channels with competitive access or channels with non-competitive access.

11 shows another example of a distribution in which two first pilot channels and one second pilot channel are included. As shown, the second pilot channel is allocated in the middle of the TTI (for example, in the fourth symbol), which differs from the example in FIG. 10. For channel estimation, the first and second pilot channels are used, which makes it possible to more accurately estimate temporal changes in the transmission path (channel) during the TTI. In addition, the estimation of the transmission path (channel) is easier in the case when the mobile station does not move at high speed than in the case when the mobile station moves at high speed. Therefore, the amount of information in the first pilot channel may be less than the amount of information in the second pilot channel. This can be seen in FIG. 11, for example, by time periods of symbols that are shorter for the first pilot channel than for the second pilot channel. Thus, the transmission efficiency of information for mobile stations not moving at high speed can be improved.

Channel allocation examples

12 is an example of a distribution of uplink public data channels, uplink public control channels and pilot channels (or an example of scheduling performed by a base station). According to the presented example, the entire frequency band provided for use by the system, for example, 20 MHz, is divided into four frequency fragments (in some cases also called frequency blocks of the system) of 5 MHz. One fragment is shared by three users. One user can use one or more fragments. For example, user A can use two fragments on the left side. One transmission time interval (TTI) contains eight characters. One fragment and one TTI form the minimum element of resource allocation.

Upstream public control channels are time multiplexed with upstream public data channels per symbol in the assigned fragment. Pilot channels (first pilot channels) are typically used to process the uplink public control channel and the uplink public data channel. These pilot channels are used for CQI measurement and channel estimation. These pilot channels are placed in the start and end TTI symbols. In the presented example, an additional pilot channel (second pilot channel) is not assigned; this pilot channel may be assigned (or not assigned) depending on the channel quality of each user. A plurality of publicly available control channels for multiple users are multiplexed in a single symbol by a CDMA and / or FDMA method, which includes local FDMA and distributed FDMA. Due to this multiplexing, the effect of frequency diversity is achieved.

Pilot channels and uplink public control channels contain information about users whose data is multiplexed in the fragment used for channel transmission and packaged by FDMA or the like so that pieces of control information corresponding to users are orthogonal to each other. The following is a more specific distribution example.

On figa presents examples of multiplexing pilot channels and upward public control channels included in the second TTI on the left in Fig.12. According to the presented example, the pilot channels are multiplexed by the distributed FDMA method so that the signals from the respective users are orthogonal to each other; the upstream public control channels are multiplexed by the CDMA method so that the signals from the respective users are orthogonal to each other. In another embodiment, the uplink public control channel may be multiplexed in a distributed FDMA fashion so that signals from respective users are orthogonal to each other, and pilot channels may also be multiplexed in a CDMA fashion so that signals from respective users are orthogonal to each other. In addition, pilot channels and uplink public control channels may be multiplexed by the FDMA method or the CDMA method. In distribution example 1, two fragments are used by user A, who can use these two fragments for code multiplexing and transmission of an uplink public control channel. This distribution example is advantageous if user A transmits a large amount of data.

In distribution example 2, a user having two fragments at his disposal uses one fragment for code multiplexing a public control channel and transmitting the multiplex channel. In this example 2, user equality is ensured.

In distribution example 3, a user having two fragments at his disposal uses two fragments with half transmit power per fragment for code multiplexing a public control channel, and transmits the multiplex channel. In this example 3, user equality is also ensured.

Distribution Example

As indicated above, a plurality of upstream public control channels for a plurality of users are multiplexed by the CDM and / or FDM method, whereby the channels associated with the respective users can be orthogonal to each other. The base station provides the mobile station with information (distribution information) about a method by which publicly available control channels for various users are multiplexed using a downlink publicly available control channel or the like. The mobile station transmits an uplink public control channel in accordance with the information provided.

It should be noted that the orthogonal arrangement obtained by the CDM method is more vulnerable than the orthogonal arrangement obtained by the FDM method due to interference due to multipath propagation, clock shift during reception, and other similar problems. Therefore, in one example of the present invention, the FDM method is used if the number of users is less than or equal to a certain number N _f , and the CDM method (in addition to the FDM method) if the number of users is more than a certain number N _f .

13B shows an example of a method for multiplexing uplink public control channels for multiple users by a local FDMA method and a CDMA method. In the presented example, the parameter N _f is 4. As shown, the upstream public control channels are multiplexed by the local FDMA method if the number of users is less than or equal to 4, and multiplexed simultaneously by the FDMA method and the CDMA method if the number of users is greater than or equal to 5. Moreover, the channels for User 1 and User 5 occupy the same frequency band and can be distinguished by any different codes C _A , C _B. Similarly, the channels for user 2 and user 6 occupy the same frequency band and may differ by any codes. In this case, the codes used by users 1-4 for upstream public control channels may be the same or different. This is because the codes used in this case are used to distinguish between channels occupying the same frequency band, and there is no need to distinguish channels occupying other frequency bands by codes. In the presented example, one C _{A is} used by users 1-4, and one code C _B (C _B ≠ C _A ) is used by users 5-8. If the number of users is larger, other different codes C _C , C _D , ... are used. The distribution information transmitted to the mobile station by the base station includes information about the frequency band, information about the codes (if codes are used), etc.

13C shows an example of an embodiment in which uplink public control channels for multiple users are multiplexed by distributed FDMA and CDMA methods. If the number of users is less than or equal to 4, then the upstream public control channels are multiplexed by the distributed FDMA method. If the number of users is greater than or equal to 5, uplink public control channels are multiplexed by FDMA and CDMA methods. As in the example shown in FIG. 13B, the channels for user 1 and user 5 occupy the same frequency band and can differ in any different codes C _A , C _B Similarly, channels for user 2 and user 6 occupy one and the same frequency band and may vary by any codes. The codes used by users 1-4 for upstream public control channels may be the same or different. In the presented example, the same code C _{A is} used by users 1-4, and the same code C _B (C _B ≠ C _A ) is used by users 5-8. If there are even more users, various different codes C _C , C _D , ... are used. The distribution information transmitted to the mobile station by the base station includes information about multiple frequency components, information about codes (if codes are used), etc.

In the example shown in FIG. 13C, the frequency components of the uplink public control channels for the respective users are distributed over the complete fragments, therefore, the frequency diversity effect in the example in FIG. 13C may be more pronounced compared to the example in FIG. 13B. Therefore, the example of FIG. 13C is preferred in terms of improving signal quality.

An example of channel allocation according to types of a public control channel

As indicated above, the uplink control channel includes one or more parts (1) of control information associated with a planned uplink public data channel; (2) control information associated with a planned downlink public data channel; (3) control information changing the scheduling content of the uplink public data channel; (4) control information used when scheduling a downlink public data channel. Among these pieces of information (1), the control information associated with the planned uplink public data channel, which includes the control information needed to demodulate the uplink public data channel, is mandatory control information that must be associated with the uplink public data channel. On the contrary, the management information associated with the planned downstream public data channel (2), as well as the management information that changes the scheduling content of the upstream public data channel (3), is optional management information (or management information other than the mandatory management information), and not necessarily associated with the upstream public data channel. According to such a classification, control information that changes the scheduling content of the uplink public data channel (3) can be included in the required control information or can be included in the control information other than the mandatory control information.

As a result, from the point of view of the combination of channels transmitted in the uplink, the following 3 transmission modes 1, 2, and 3 are considered. More specifically, there are the following three combinations of channels included in one radio resource element (uplink resource element), defined by one frequency fragment and one transmission time interval (TTI).

A mobile station operating in transmission mode 1 transmits a pilot channel, an uplink public data channel, and a public control channel that includes only mandatory control information, and therefore does not transmit control information with the exception of mandatory control information.

A mobile station operating in transmission mode 2 transmits a pilot channel, an uplink public data channel, and a public control channel that contains all control information, including mandatory control information and other control information.

A mobile station operating in transmission mode 3 transmits a pilot channel and a public control channel that contains other control information with the exception of mandatory control information, but does not transmit an upstream public data channel and mandatory control information. In any of the modes described, the base station sends an instruction signal to the mobile station, and the mobile station transmits various channels in accordance with the instruction signal.

On Fig presents an example of the distribution of the channel (part 1) in accordance with the types of public control channels. In the presented example, the data distribution of user x, which transmits data according to transmission mode 1 or 2, and data of user y, which transmits data according to transmission mode 3 in such a way that one resource element is shared between user x and user y, is performed. The pilot channel and the public control channel of users x, y are transmitted in the same time interval, so the orthogonality of the pilot channel and the public control channel is achieved by multiplexing in frequency and / or codes. User x transmits the pilot channel, the public control channel, the public data channel, and the pilot channel in the order shown. The user y transmits a pilot signal and a public control channel, is in a ready state for some time and then transmits a pilot channel again. For ease of explanation, each user is referred to as “user x” or “user y”, however, user data does not necessarily mean data of only one user and may include the maximum possible amount of multiplexed data if the data is located on one resource.

On Fig shows an example of the distribution of the channel (part 2) in accordance with the types of public control channels. In the presented example, user x, which transmits data according to transmission mode 1 or 2, and one or more users y ₁ , y ₂ ... that transmit data in transmission mode 3, use different radio resources for data transmission. User x uses a specific radio resource to transmit the pilot channel, public control channels (mandatory control information in case of transmission mode 1 and mandatory control information and other control information in case of transmission mode 2), public data channel and pilot channel in the order shown in FIG. .fifteen. One or more users y ₁ , y ₂ .... transmit corresponding pilot channels, corresponding publicly available control channels (other control information with the exception of mandatory control information) and pilot channels using radio resources other than the specific radio resource used by user x. In other radio communication resources, the data of one or more users is multiplexed by time, frequency, code, or any combination of the methods of time multiplexing, frequency multiplexing, and code multiplexing to obtain their mutual orthogonality. Radiocommunication resources in which control information can be transmitted with the exception of mandatory information (the above other radio resources) can be prepared periodically or not periodically along the time axis and frequency axis. In another embodiment, the period may be different depending on transmission conditions. In any case, the base station sends an instruction signal to each mobile station, and control channels (with the exception of mandatory control information) from various mobile stations are received uniformly in a certain radio resource. The presented example is preferable from the point of view of reducing interference between the mandatory management information and other management information, since the mandatory management information is separated from other management information along the time axis.

On Fig presents an example of channel allocation (part 3) in accordance with the types of public control channels. According to the presented example, user x, which transmits data in transmission mode 1 or 2, and user y, which transmits data in transmission mode 3, use various radio resources when transmitting their own data. It should be noted that according to the presented example, a dedicated frequency band is prepared for transmission in mode 3. The amount of control information with the exception of mandatory control information is small, therefore, the selected band in the general case can have a frequency band of less than one fragment. In the presented example, continuous preparation of the radio resource is performed, along which other control information can be transmitted with the exception of the mandatory control information, along the time axis, therefore, if necessary, the mobile station is ready to transmit other control information with the exception of the mandatory control information.

On Fig presents an example of the distribution of the channel (part 4) in accordance with the types of public control channels. According to the presented example, part of the frequency band of a certain frequency fragment is used to transmit other control information with the exception of mandatory control information. The width of a portion of the frequency band may be less than the width of one fragment, as, for example, in the case of a dedicated frequency band, marked by the explanation in Fig. In addition, if there is continuous preparation of time intervals in which other control information with the exception of mandatory control information can be transmitted along the time axis, then in the example of FIG. 17, the mobile station is ready to transmit other control information with the exception of mandatory control information. A portion of the frequency band in FIG. 17 may be distributed continuously or intermittently along the time axis. In addition, a change in the position in which a part of the frequency band is placed in the frequency direction may occur over time.

On Fig presents an example of the distribution of the channel (part 5) in accordance with the types of public control channels. In particular, FIG. 18 shows a process for transmitting data intended for transmission in transmission mode 1 or 2, as well as data intended for transmission in transmission mode 3. It can be seen from the drawing that for data intended for transmission in transmission mode 3, a dedicated frequency band is prepared. In addition, a user performing data transfer in transmission mode 1 transmits mandatory control information via a public data channel and a public control channel using any frequency fragment. On the other hand, a user performing data transmission in transmission mode 2 transmits other control information with the exception of mandatory control information through a dedicated frequency band, while transmitting mandatory control information through a public data channel and a public control channel using any frequency fragment. A user performing data transfer in transmission mode 3 transmits control information with the exception of mandatory control information through a dedicated frequency band. Thus, the base station can receive control information with the exception of mandatory control information from all users by requesting a received signal through a dedicated frequency band, which is relatively narrow, which facilitates the processing of signals at the base station.

On Fig shows the frequency band used in a particular communication system. The frequency band provided to the system may include a plurality of frequency blocks of the system, while the mobile terminal device may communicate using one or more resource blocks included in the frequency blocks of the system, which is similar to the example in FIG. 12, except for specific differences values. It should be noted that a frequency band may also be called a full frequency band or a system band. According to the example of FIG. 19, the system bandwidth and the system frequency block are 10 MHz and 5 MHz, respectively, therefore, the system bandwidth contains two system frequency blocks. For simplicity of description, only one frequency block of the system is shown. The resource block has a bandwidth of 1.25 MHz, and one frequency block of the system contains four resource blocks. The base station can determine whether one of the two frequency blocks of the system can be used to interact with the mobile station, according to the bandwidth suitable for use by the mobile station, and the number of users communicating in the system. The bandwidth of the system’s frequency block can be selected so that all mobile stations that require the ability to interact in the system receive practical interoperability within a given bandwidth. In other words, the bandwidth of the system’s frequency block is defined as the maximum transmission bandwidth for the mobile terminal device having the lowest level. Thus, a mobile terminal device capable of communicating only with a bandwidth of 5 MHz is assigned to any of the frequency blocks of the system, and a mobile terminal device capable of communicating only with a bandwidth of 10 MHz can be assigned both frequency blocks of the system. The mobile terminal device transmits an uplink pilot channel using one or more resource blocks included in the assigned frequency block of the system. The base station determines (schedules) one or more resource blocks in accordance with the reception level of the uplink pilot channel; these resource blocks are used by the mobile terminal device to transmit a public data channel. The scheduling content (scheduling information) is transmitted to the mobile terminal device via a downlink control channel or another channel. The mobile terminal device transmits an uplink public data channel using the assigned resource blocks. In this case, a public control channel (a public control channel containing mandatory control information) associated with an upstream public data channel is transmitted in the same resource blocks. As indicated above, the public control channel may contain other control information with the exception of mandatory control information. As indicated in the comments of FIGS. 14-18, the base station also determines resource blocks used to transmit such control information to the base station by the mobile terminal device.

On Fig presents an example according to which the resource blocks used by the user to transmit a public control channel change over time. The upstream public control channel of a particular user is indicated in FIG. 20 by shaded areas of resource blocks. Resource blocks available for use by the user correspond to the frequency change pattern; this process is indicated in FIG. 20 by an arrow pointing down. The contents of the shift pattern may be known to the base station and the mobile station before the start of the communication session or, if necessary, may be transmitted to the mobile station by the base station. Since a frequency change is performed, not only certain resource blocks are used, but also various source blocks. Due to this, the signal quality of the upstream public control channel can be maintained at an average level. It should be noted that the frequency shift pattern shown in the drawing is exemplary, and various shift patterns may be used. In addition, not one but many shift patterns can be prepared that can be switched in random order.

According to the presented example, the user transmits control information with the exception of mandatory control information and with the exception of the third subframe, which is the third along the time axis. A subframe may be referred to as a transmission time interval (TTI). The uplink data channel in the third subframe is transmitted in the right resource block, in which the public control channel is also transmitted. In the third subframe, another resource block is used that is not tied to a frequency change pattern. Information about such a non-standard case is transmitted via a public control channel from the base station.

On Fig presents another example of the change of resource blocks used by the user to transmit a public control channel over time. According to the presented example, many users transmitting other control information with the exception of mandatory control information use the same resource blocks and the same subframes as described in the comments on Fig. 15. In this case, the used resource blocks shown in the drawing may differ in frequency change patterns. In addition, if one user at a certain point in time transmits only other control information with the exception of mandatory control information, but the radio resource of the upstream public data channel is assigned higher, then the public control channel is also transmitted through the resource block for the public data channel. 22, an uplink public data channel is transmitted in a second subframe and a third subframe, and a public control channel is transmitted in combination with an uplink public data channel. The specified user transmits a public control channel in the same resource blocks in other subframes as the resource blocks used by other users communicating in transmission mode 3, as in the example shown in Fig.21.

Example 2

On Fig presents a block diagram of a transmitter according to an example of the present invention. The presented transmitter is basically similar to the transmitter shown in figure 1, but differs from it by the presence of additional elements, due to the difference in their functions. In the General case, the presented transmitter is installed on a mobile station. 23 shows a pilot channel generating module 231, a competitive access channel generating module 232, a public control channel generating module 233, a public data channel generating module 234, a multiplexing module 235, a discrete Fourier transform module 236, a distribution module 237, and an inverse module 238 Fast Fourier Transform.

The pilot channel generating unit 231 generates a pilot channel that is used in the uplink.

The public control channel generation module 233 generates a public control channel, which may contain various components of the control information. A public control channel generating unit 233 will now be described with reference to FIG. 25.

The public data channel generating unit 234 generates a public data channel for transmission on the uplink.

The multiplexing module 235 multiplexes one or more channels, and multiplex channels arrive at its output. As shown in Example 1, in the uplink, various types of channel allocation can be used. In other words, not all channels shown in the drawing are multiplexed, but one or more channels are multiplexed as a request for circumstances. According to the presented example, the multiplexing module 235 performs time division multiplexing, after which the multiplexed signals are coupled to the frequency components by the distribution module 237. The time-multiplexed signals belong to the channel with competitive access, since scheduling is performed under the control of the base station.

On the other hand, the competitive access channelization module 232 generates a competitive access channel. The competitive access channel is described above, so a second explanation is not given.

The competitive access channel and the non-competitive access channel are switched by the switch and both types of signals are transmitted.

The discrete Fourier transformation (DFT) module 236 performs the Fourier transform for the input signal (in the example shown, this is a multiplexed signal). Discrete Fourier transform is performed due to the fact that at this stage of signal processing, the specified signal is a discrete digital signal. After that, the set of signal sequences is placed along the time axis in this frequency domain.

Distribution module 237 distributes the signal components after Fourier transform to specific subcarriers in a given frequency domain. In this case, local FDM or distributed FDM can be performed.

The inverse fast Fourier transform module 238 performs the inverse fast Fourier transform for the packed signal components; a set of signal sequences arranged along the time axis is output.

On Fig presents a block diagram of a receiver according to an example of the present invention. The presented receiver is basically similar to the receiver in figure 2, but differs from it by the presence of additional elements, due to the difference in their functions. In the General case, the presented receiver is installed at the base station. 24 shows a discrete Fourier transformation (DFT) module 241, an inverse distribution module 242, an inverse Fourier transform module 243, and a demultiplexing module 244.

The discrete Fourier transform (DFT) module 241 performs the Fourier transform for the input signal (in the example shown, this is the received signal). Through this operation, a set of signal sequences located along the time axis is extracted in the frequency domain.

The inverse distribution module 242 extracts certain subcarrier components from the signal after the Fourier transform. Through this operation, signals multiplexed, for example, by the local FDM and distributed FDM methods are demultiplexed.

The inverse fast Fourier transform module 243 performs the inverse fast Fourier transform for the demultiplexed signal components; a set of signal sequences located along the time axis is output.

Demultiplexing module 244 demultiplexes one or more channels, and demultiplexed channels are output. In the presented example, the inverse distribution module 242 restores the signals distributed in the frequency components to the signals that existed before the distribution, and the demultiplexing module 244 demultiplexes the time-multiplexed signals.

One or more channels generated by the channel forming modules 231, 232, 233, 234 are time-multiplexed by the multiplexing module 235 (with appropriate switching), input to the discrete Fourier transform module 236, and converted to frequency domain signals. The converted signals are respectively distributed by the distribution module 237 into frequency components, input to the IFFT module 238, and converted into sequential (in time) signals. Next, the signals are transmitted by an element corresponding to the radio frequency module 14 in figure 1. The signals are received by the receiver shown in FIG. 2 or FIG. 24. The received signals are supplied to the discrete Fourier transform module 241 and converted into frequency domain signals. At the initial stages of the process, the converted signals are distributed into frequency components; therefore, the distributed signals are back-distributed by the back-distribution module 242, as a result of which the original signals that existed before the distribution are constructed. The inverse distributed signals are converted into a serial (in time) signal by the IFFT module 243 and, accordingly, are demultiplexed by the demultiplexing module 244. Demultiplexed signals undergo a demodulation process or the like in process components (not shown in the drawing).

On Fig presents a detailed structure of module 233 forming a public control channel. 25 shows switches 251, 252, 253, modulation and coding units 255, 256, 257, 258 and multiplexing unit 259. Each of the switches 251, 252, 253 allows you to feed the channel arriving at one output of the switch to the other output of the switch by an instruction signal (not shown) from a public control channel. The contents of the instruction signal should indicate the configuration of the public control channel, namely, what control information should be placed on the public control channel. The presented example shows control information that can be included in a public control channel: (1) mandatory control information; (2) information on the successful or unsuccessful reception of the downward channel - positive acknowledgment (ACK) or negative acknowledgment (NACK); (3) information that changes the content of planning; (4) Channel Status Information (CQI) indicating the reception quality of the downlink pilot channel.

Each modulation and coding module 255, 256, 257, 258 modulates the channel entering the modulation and coding module with a selected modulation method and encodes the modulated channel with a selected coding method. The modulation method and coding method may be different for each channel or the same for two or more channels. The modulation method and the encoding method can be fixed.

The multiplexing module 259 multiplexes the channels and forms a public control channel; the generated public control channel is output.

In a conventional transmission through a public control channel, a modulation method and an encoding method are determined and set, while it is contemplated to provide the required quality by controlling the transmission power. On the other hand, from the point of view of high quality of the channel, efficient use of resources, etc., with respect to the transmission of the public control channel, further adaptation of the communication line is preferably applied. As an adaptation method, an Adaptive Modulation and Coding (AMC) scheme and Transmission Power Control (TPC) can be used.

On Fig shows the control principle AMC, on the basis of which the adaptive change of the modulation method or the encoding method, or both of them, depending on the quality of the channel, which ensures the necessary quality at the receiving side. More specifically, if users (mobile stations) 1, 2 transmit with the same transmit power, then the quality of the channel of user 1, located far from the base station, is expected to be lower (or CQI is supposed to be worse). Therefore, the number of modulation level values (modulation orders) and / or channel coding rate is expected to be lower. According to the presented example, Quadrature Phase Shift Keying (QPSK) is used as a modulation method for user 1, and two bits of information are transmitted per character. On the other hand, the quality of user channel 2 in the vicinity of the base station is expected to be higher (or CQI is supposed to be better). Therefore, the number of modulation level values (modulation orders) and / or channel coding rate is expected to be higher. In the presented example, 16-level quadrature amplitude modulation (QAM) is used as a modulation method for user 2, and four bits of information are transmitted per character. Due to this, the necessary quality is achieved by increasing the reliability of the communication line for a user with a poor channel condition, as well as increasing throughput while maintaining the necessary quality for a user with a good channel condition. If many combinations of modulation methods and coding methods are prepared in advance, the number of transmitted overhead bits can be reduced by transmitting information indicating the combination used (Modulation and Coding Scheme number, MCS). On Fig shows examples of such combinations. MCS numbers can match the numbers used for public data channels, or can be prepared separately from MCS numbers for public control channels. In another embodiment, part of the numbers created for public data channels may be used as MCS numbers. This is due to the fact that publicly available control channels do not require a high transmission rate, which is mandatory for publicly available data channels. When demodulating the received channels according to the AMC method, it is necessary to have information about the modulation method, the encoding method and the number of characters, i.e. information must be transmitted to the receiver in some way. In addition, the number of bits transmitted in one symbol depends on the quality of the channel: with a low quality of the channel, a large number of characters is required, while with a high quality of the channel, data can be transmitted with a small number of characters. Unlike the public data channel, the MCS used to process the public control channel can be set according to the number of overhead bits needed for transmission. If it is required to transmit a large number of overhead bits, a large number of MCS can be used (a large number of modulation levels (modulation orders), a large channel coding rate). If it is required to transmit a small number of overhead bits, then a small number of MCS can be used (a small number of modulation levels (modulation orders), a low channel coding rate).

On Fig presents an example configuration of an uplink frame. The public control channel, the pilot channels, and the public data channels are multiplexed by a time division multiplexing (TDM) method. The public control channel mainly contains information that is used in demodulating the public data channel; it may be called the L1L2 control signal channel. In the situations indicated by reference (A), the quality of the uplink is high, and a relatively large number of MCSs are used to process the public control channel. As a result, the transmission of the L1L2 control signal channel takes a relatively small amount of time. In the situations indicated by reference (B), the quality of the uplink is high enough for resource allocation planning, but not high compared to situations (A). In this case, a relatively small number of MCSs are used to process the public control channel. As a result, the transmission of the L1L2 control signal channel takes a relatively long period of time. The number of MCS can vary depending not only on the quality of the channel, as described above, but also on the number of overhead bits intended for transmission. For example, if the multi-input, multi-output (MIMO) method is used, then the transmission content may be different for different antennas. As a result, the number of overhead bits may be different for different mobile terminals; in addition, the number of overhead bits used to process the public control channel may depend on the number of antennas used and other similar parameters. In this case, if the number of overhead bits intended for transmission through the public control channel is large, a large number of MCS (A) can be used, while with a low number of these bits a small number of MCS (B) can be used.

On Fig presents a method of controlling transmit power, which provides for the necessary quality in the receiver by controlling the transmit power. More specifically, the expected channel quality for user 1, located far from the base station, will be lower, and the downstream channel is transmitted with higher transmit power. On the other hand, the expected channel quality for user 2 located in the vicinity of the base station will be higher. In this case, if user 2 transmits an uplink with a higher transmit power even with a higher quality of his channel, then it creates strong interference for other users. Since the quality of the channel as a whole is high, the required quality will be achieved even with lower transmission power. Therefore, the uplink in this case is transmitted with a relatively low transmit power. If the transmission power control is implemented separately, the modulation method and the encoding method are not changed, and a combination known to the transmitter and receiver is used. Therefore, when using the transmission power control method, it is not necessary to transmit information about the modulation method, etc., necessary for channel demodulation, to the mobile station.

30 is a flowchart illustrating an example of a transmission power control method. This method is generally referred to as feedback control of transmit power. Further, for convenience, this method is referred to as "transmission power control". According to this method, the base station transmits a downlink pilot channel to the mobile station. The mobile station receives the downlink pilot channel for a certain period of time and calculates the average path loss or propagation loss L. The propagation loss L is determined mainly by distance changes and shading, and in general, this parameter has a similar value for uplink and downlink , averaged over the corresponding time interval. For example, instantaneous oscillations during attenuation do not affect the average reception quality over a relatively long period of time, which may correspond, for example, to one or more frames. The mobile station sets uplink transmit power based on the propagation loss L and transmits a public control channel with a set transmit power. The propagation loss L is described by the difference between the transmit power P _t at the base station and the transmit power P _r at the mobile station. The broadcast channel broadcast by the base station may include a transmit power parameter P _t at the base station, an uplink interference level I ₀ and a target quality level SIR _t .

FIG. 31 is a flowchart illustrating another method for controlling transmit power. For convenience, this method is referred to as "CQI-based TRS". First, the mobile station transmits an uplink pilot channel to the base station, and the base station measures the CQI in accordance with the reception level of the uplink test channel. The base station accesses the table as shown in FIG. 27 and determines the number of MCS that is used to process the uplink public data channel, in accordance with the CQI. The base station and the mobile station have information about the respective relationships between the MCS number of the uplink public data channel and the transmit power used for the public control channel. The received content (MCS number) is transmitted via the downlink public control channel to the mobile station. After that, the mobile station determines the transmit power corresponding to the public control channel based on the received MCS, and transmits the public data channel and the public control channel to the base station.

32 shows combinations of various control information and a transmission power control method. As indicated above, the public control channel may contain mandatory management information and management information with the exception of mandatory management information. Mandatory control information includes MCS information or the like intended for processing the uplink public data channel. MCS or similar information is transmitted in advance from the base station to the mobile station. As already indicated, the corresponding relationships between the transmit power of the public control channel and the MCS number of the public data channel can be set in advance. Thus, there is no need to put overhead bits in the public control channel to control the transmit power of the uplink public control channel, since the mobile station can determine the transmit power of the uplink public control channel based on the received MCS number. Without obtaining mandatory control information, it is not possible to demodulate a public data channel, therefore, a public control channel containing mandatory control information must be transmitted with high quality. Therefore, it is preferable to use a CQI-based TPC that is more accurate than a feedback-free TPC.

On the other hand, the quality of the management information, with the exception of mandatory management information, lower or equal to the mandatory management information, is acceptable. Therefore, CQI-based or TPC-based TPC without feedback can be used. However, when using CQI-based TPCs, it is necessary to include information used to control the transmit power of the uplink public control channel in the downlink public control channel.

In addition, when performing the normal AMC control process for the upstream public data channel, the transmission power is maintained at a constant level, and communication is based on a certain combination (MCS) of the modulation method and coding method, which are selected depending on the quality of the channel, in order to maintain a constant quality signal. In one example of the present invention, AMC control is also performed for a public control channel. The public control channel does not require high bandwidth, but, compared with the public data channel, the AMC control improves the transmission quality of the public control channel by choosing the appropriate MCS depending on the channel quality.

On figa shows the operations performed in the process of determining the transmission method of the upward public control channel (in particular, the signal channel L1 / L2). As indicated above, for a public data channel, scheduling is performed for each TTI and the appropriate MCS and / or transmit power is currently selected. The selected MCS is reported to the mobile station via the L1 / L2 signaling channel. The relationship between MCS and transmit power is known to the mobile station in advance. Therefore, the mobile station performs data modulation and data encoding in the public data channel in accordance with the MCS communicated to it, and thus performs transmission with the corresponding transmit power. The MCS and transmit power used for the L1 / L2 signaling channel can be specific and fixed. However, MCS and transmit power, if necessary, may vary to some extent depending on the transmission conditions in order to improve transmission quality. With this in mind, the following operations can be performed.

First, the mobile station transmits a pilot channel to the base station. In general, a pilot channel is transmitted in an uplink with a specific period. After receiving the pilot channel, the base station measures the quality of the uplink channel and obtains channel quality information (CQI).

The base station determines the radio parameters of the uplink public control channel in accordance with the channel quality information (CQI). Radio parameters may include information elements describing a combination (MCS) of modulation method and channel coding rate, transmission period (T _L1L2 ) of the uplink public control channel, transmit power (P _tx ), etc. Such parameters can be stored in any storage device, for example, in the form of a table. Channel quality information (CQI), modulation and coding rate (MCS) information, transmission period T _L1L2, and transmission power P _tx are related to each other, and at least based on channel quality information (CQI) can be obtained other parameters. In general, CQI channel quality information for a low quality channel is associated with MSCs having a small number of transmission bits, a long transmission period T _L1L2, and a high transmission power P _TX . In contrast, CQI channel quality information for a high quality channel is associated with MCSs having a large number of transmission bits, a short transmission period T _L1L2, and a low transmission power P _TX . On figv presents an example of the corresponding relationships between the parameters of the radio. In the presented example, there is a relationship between channel quality information (CQI), modulation and coding rate (MCS) information, transmission period T _L1L2, and transmission power P _TX . In order to advantageously maintain the frame configuration, the transmission period T _{L1L2 is} changed only if the reception quality has a sufficiently negative effect on the communication. Any number of combinations of radio parameters may be prepared. On the other hand, it is not necessary to prepare as many combinations as possible in order to compensate for the instantaneous gradual change. The number of combinations may be limited when the average gradual change or path loss (distance change, dimming, or the like) can be compensated.

In the process of determining various parameters of the radio communication produced by the base station, a transmission method for the uplink public control channel is determined. For example, the frame configuration in FIG. 28 (A) is used to serve a user having a high-quality channel, and the frame configuration in FIG. 28 (B) is used to serve a user having a low-quality channel. Information about the set parameters is transmitted to the mobile station through a public control channel. Information about the radio parameters does not necessarily contain specific information about each of the above parameters. For example, if there is a radio parameter table shared between the base station and the mobile station, only the MCS is transmitted to the mobile station, and the mobile station calculates the remaining parameters from the MCS. In another embodiment, the CQI measured at the base station may be reported to the mobile station. In any case, the mobile station must have the radio parameters defined at the base station. In this example, an MCS determined based on the reception quality of the CQI of the uplink pilot channel is transmitted to the mobile station.

The mobile station sets various radio parameters in accordance with the received command. More specifically, in the module 233 forming the public control channel in Fig.23 (modules 255-258 adaptive modulation and coding in Fig.25) is set MCS. The transmission period T _{L1L2 of the} public control channel is adjusted in the multiplexing unit 235 in FIG. 23. In addition, in the adaptive modulation and coding units 255-258 and / or the multiplexing unit 259 in FIG. 25, the transmit power is adjusted so that only the corrected power signal is output to the multiplexing unit 259.

Next, a public control channel is transmitted based on accordingly adjusted radio parameters.

It should be noted that the base station appropriately receives the uplink public control channel, and the base station does not necessarily have data on the transmit power of the uplink public control channel. The reason for this is that as the transmit power increases, the reception quality also increases. More specifically, any information about the level or change in transmission power that would be transmitted in each case between the base station and the mobile station is missing. On the other hand, if the transmission period T _L1L2 and the MCS of the public control channel are unknown, corresponding reception is not possible. Therefore, on any signal channel between the base station and the mobile station, information with radio parameters, such as MCS and others, should be transmitted each time such information is changed. In another embodiment, a blind detection is required in which demodulation is performed on the receiving side using all combinations to confirm the corresponding reception using error detection decoding or the like. Frequent use of signal channels can lead to increased consumption of radio resources, as well as to complicated signal processing. Therefore, the MCS parameter or another parameter of the public control channel, presented essentially in FIG. 33A, is adjusted with relatively long periods and can be transmitted as signal channel L3. On the other hand, the transmit power of the public data channel and the public control channel is updated with relatively short periods on the TPC based on the CQI (Fig. 31).

Thus, through the above steps, a high-quality public control channel is provided by appropriately adjusting one or more MCS modulation and coding methods of the upstream public control channel, transmission period T _L1L2, and transmission power P _tx .

Example 3

The mobile station and the base station can interact using a single antenna or multiple antennas or can form a multi-antenna system, in particular, a system based on MIMO (Multi Input Multi Output, many inputs - many outputs). In this case, the uplink public control channel may be transmitted from a single antenna or from multiple antennas. In the first case, the public control channel is transmitted using one of the multiple antennas installed on the mobile station. In the MIMO-based transmission method, a MIMO multiplexing method and a MIMO diversity method are provided. According to the MIMO multiplexing method, different signals are transmitted at the same frequency in the same time interval from each antenna, which is preferable from the point of view of high throughput. On the other hand, if the public data channel is not transmitted, or the public data channel is transmitted by the MIMO diversity method, transmitting the public control channel by the MIMO multiplexing method is not preferable and practical. Therefore, the public control channel is transmitted by the MIMO multiplexing method only if the public data channel associated with the public control channel is transmitted by the MIMO multiplexing method. Moreover, while the public data channel is transmitted by the MIMO multiplexing method at a high speed, the public control channel associated with the public control channel can be transmitted by the MIMO diversity method.

There are several types of MIMO diversity methods, such as Time Switched Transmit Diversity (TSTD) diversity, delay diversity technique, Spaced Time Block Coding (STBC), etc. According to the TSTD method, a signal is transmitted from one antenna immediately, and the antennas that transmit the signal change over time. According to the delay diversity method, the synchronization of signal transmission is intentionally changed at each antenna, and several different delay paths are collected at the receiving side. According to the STBC method, a specific set of a plurality of characters is converted to another character set by changing the order of the characters, changing the polarities and / or converting to a complex conjugate. In any case, the MIMO diversity method provides approximately the same throughput as the single antenna method, and the MIMO diversity method improves the reliability of data transmission. On the other hand, the MIMO multiplexing method allows for high throughput. Among the MIMO diversity methods, the TSTD method has the advantage that, in comparison with other methods, a large total amount of transmitted information is not required and a high workload on the receiving side is not created.

If the MIMO-based system consists of a base station and a mobile station, then the mobile station must transmit feedback signals to each transmit antenna of the base station. For example, feedback signals may include information indicating successful reception (ACK) or unsuccessful reception (NACK) of a downstream channel, channel quality information (CQI), etc. These pieces of information coincide with the management information with the exception of mandatory control information, as mentioned above. The base station requests the quality of the downlink transmission channel for each antenna in accordance with the feedback signals transmitted in the opposite direction to the corresponding antennas. In this case, within one subframe or transmission time interval of the element, a plurality of prepared feedback signals can be transmitted to each transmitting antenna of the base station (Fig. 34 (A)). In this case, the control delay can be reduced regardless of the number of transmitting antennas. On the other hand, the number of necessary overhead bits per subframe increases, since the number of antennas increases. In another embodiment, the feedback signal for one antenna may be transmitted in one subframe (Fig. 34 (B)). In this case, the required number of overhead bits per subframe remains constant, and thus the configuration of the transmission frame remains unchanged regardless of the number of transmit antennas. On the other hand, the control delay may increase, therefore, the number of feedback signals to the transmitting antenna should preferably be reduced. For example, if the number of antennas is 2, then, according to technology (A), the feedback signal is preferably transmitted once in one subframe, while in the case of technology (B), the feedback signal is preferably transmitted 0.5 times in one subframe.

The present invention has been described with reference to several separate examples for ease of explanation, however, the implementation of each of these individual examples is not necessary for the present invention; however, if necessary, one or more examples can be implemented in combination with each other.

This international application is based on applications Nos. 2005-174397, 2005-317568, 2006-9301, 2006-31751 and 2006-127988 filed with the Japan Patent Office on June 14, 2005, October 31, 2005, January 17, 2006. February 8, 2006 and May 1, 2006, respectively, the entire contents of which are incorporated herein by reference.

Claims (51)

1. A mobile station containing:
a multiplexing module configured to multiplex a channel with competitive access and a channel with non-competitive access;
a transmission module, configured to transmit multiplexed channels with competitive access and non-competitive access to the base station;
moreover, scheduling at the base station before transmitting the indicated multiplexed channels is not performed for the channel with competitive access and is performed for the channel with non-competitive access, the channel with competitive access includes one or more of the following channels:
a quick access channel, a reservation channel, and an uplink synchronization channel, and a non-competitive access channel includes one or more of the following channels: an upstream public data channel and an upstream public control channel, wherein
the quick access channel contains data stream information, or control data, or a combination thereof, said data stream data and control data having a data size smaller than a predetermined value,
the reservation channel contains non-competitive access channel planning request information, and
the upstream public data channel contains information flow data, or control data, or a combination thereof. 2. The mobile station according to claim 1, characterized in that said competitive access channels are multiplexed for multiple users by the method of frequency multiplexing, code multiplexing, or a combination thereof. 3. The mobile station according to claim 1, characterized in that it is configured to use for transmission of multiplexed channels with competitive access and non-competitive access to the base station of a frequency band divided into many frequency blocks, each of which includes one or more carriers, moreover, the channel with competitive access and the channel with non-competitive access are transmitted using one or more frequency blocks. 4. The mobile station according to claim 1, characterized in that the uplink synchronization channel is transmitted less frequently than the quick access channel. 5. The mobile station according to claim 1, characterized in that the upstream public control channel contains one or more elements of control information associated with the upstream public data channel for which scheduling is performed, control information associated with the downstream public data channel for which scheduling, control information used to change the scheduling content of the uplink public data channel, and control information used to execute the planned I was descending a public data channel. 6. The mobile station according to claim 5, characterized in that the upstream public control channel contains the transmitted mandatory control information associated with the upstream public data channel, and the mandatory control information includes information about the combination of the modulation method and the encoding method. 7. The mobile station according to claim 6, characterized in that the mandatory control information further includes retransmission information, which contains information indicating whether the packet intended for retransmission through the upstream public data channel is a retransmission packet, and channel coding redundancy version information suitable for the retransmission packet. 8. The mobile station according to claim 1, characterized in that the uplink public data channel is transmitted in accordance with the scheduling content determined based on the channel status. 9. The mobile station according to claim 1, characterized in that it is further configured to multiplex the pilot channel, wherein the multiplexing of the uplink public control channel, the uplink public data channel and the pilot channel is time multiplexing, and said multiplexed channels are transmitted in elementary transmission time intervals . 10. The mobile station according to claim 1, characterized in that the uplink public control channels are multiplexed for multiple users by the method of frequency multiplexing, code multiplexing, or a combination thereof. 11. The mobile station of claim 10, characterized in that the upstream public control channels corresponding to a plurality of users are multiplexed by a frequency multiplexing method if the number of users is less than a predetermined number and multiplexed by frequency multiplexing and code multiplexing methods if the number of users exceeds a predetermined number. 12. The mobile station of claim 10, wherein the plurality of uplink public control channels corresponding to the plurality of users have a plurality of frequency components located in predetermined frequency ranges. 13. The mobile station of claim 10, characterized in that the upstream public control channels include either one of the transmitted mandatory control information associated with the upstream public data channel and control information with the exception of mandatory control information, or a combination thereof, control information, or control information with the exception of mandatory control information, or a combination thereof is transmitted in the same frequency band and in the same time interval as management information, excluding mandatory management information for another mobile station. 14. The mobile station of claim 10, wherein the upstream public control channels include either one of the transmitted mandatory control information associated with the upstream public data channel and control information with the exception of mandatory control information, or a combination thereof, mandatory management information, or management information with the exception of mandatory management information, or a combination thereof is transmitted by a radio resource, characterized by a band frequency, or a time interval, or a combination thereof from a radio resource used in transmitting control information with the exception of mandatory control information for another mobile station. 15. The mobile station of claim 10, wherein the upstream public control channels include either one of the transmitted mandatory control information associated with the upstream public data channel and control information with the exception of mandatory control information, or a combination thereof, the information control with the exception of mandatory control information is transmitted in a frequency band prepared according to a principle different from the principle for a frequency band intended for mandatory information and management. 16. The mobile station of claim 10, wherein the upstream public control channels include either one of the transmitted mandatory control information associated with the upstream public data channel and control information with the exception of mandatory control information, or a combination thereof, the information control with the exception of mandatory control information is transmitted in a frequency band narrower than the frequency band intended for the public data channel. 17. The mobile station according to claim 1, characterized in that it is configured to transmit said multiplexed channels using a frequency band occupied by one or more resource blocks included in the frequency blocks of the system, which are included in the frequency band provided to the system. 18. The mobile station according to 17, characterized in that the transmission of these multiplexed channels is performed with the distribution of frequency blocks of the system, which is adaptively or regularly changed by the base station. 19. The mobile station according to 17, characterized in that the uplink public control channel contains control information with the exception of mandatory control information for transmission associated with the uplink data channel, and the resource blocks used for transmitting the public control channel are changed in accordance with a predefined frequency change pattern. 20. The mobile station according to claim 19, characterized in that if the assignment is made for the upstream public data channel even when the used resource blocks are changed in accordance with the frequency change pattern, then the mandatory control information and control information with the exception of mandatory control information transmitted by a resource block to which an uplink data channel is assigned. 21. The mobile station according to claim 17, characterized in that the upstream public control channel contains control information with the exception of mandatory control information for transmission and associated with the upstream public data channel, wherein the resource blocks used for transmitting the public control channel are shared many users. 22. The mobile station according to claim 9, characterized in that it further comprises a Fourier transform module that performs input of the multiplexed signal; a distribution module that assigns a signal that has passed the Fourier transform to a predetermined frequency component; and an inverse Fourier transform module performing the inverse Fourier transform to obtain an output signal of the distribution module, the signal supplied to the multiplexing module being distributed in the frequency domain. 23. The mobile station according to claim 1, characterized in that it is configured to transmit an uplink public control channel using a combination of a modulation method and an encoding method, wherein the mobile station controls a combination of a modulation method and an encoding method based on at least one of the following : transmission control bit, channel status. 24. The mobile station of claim 23, further comprising a memory module for storing a corresponding relationship between transmit power and a combination of a modulation method and a coding method, the corresponding relationship being used for an uplink public control channel. 25. The mobile station according to claim 1, characterized in that it is configured to control the transmit power of the uplink public control channel, wherein the transmit power of the uplink public control channel is determined by the feedback power control method. 26. The mobile station according to claim 1, characterized in that it further includes a memory module for storing information about the corresponding relationship between the channel quality information received at the base station, the transmit power of the uplink public control channel and a combination of the modulation method and the uplink coding method public data channel. 27. The mobile station according to claim 1, characterized in that it is adapted to use various transmission power control methods for the uplink public control channel in accordance with the absence / availability factor of the uplink public data channel and the control information of the uplink public control channel. 28. The mobile station according to claim 1, characterized in that it further includes a memory module for storing information about the corresponding relationship between the channel quality information obtained at the base station, a combination of a modulation method and a coding method for an uplink public data channel and power and the transmission period of the uplink public control channel. 29. The mobile station according to claim 1, characterized in that it further includes a plurality of antennas made with the possibility of communication type "many inputs, many outputs." 30. The mobile station according to clause 29, wherein the non-competitive access channel includes an uplink public control channel, then the transmission of the uplink public control channel is performed by any of the following methods: single antenna transmission method, diversity transmission method, method with multiplexing type "many inputs, many outputs." 31. The mobile station according to clause 29, wherein the non-competitive access channel does not include an uplink public control channel, then the transmission of the uplink public control channel is performed either by a single antenna transmission method or a diversity transmission method. 32. The mobile station according to clause 29, characterized in that it is configured to transmit in the same element a time interval for transmitting a feedback signal transmitted in response to a signal from one transmitting antenna of the base station, and another feedback signal transmitted to a response to a signal from another transmitting antenna of the same base station. 33. The mobile station according to clause 29, characterized in that it is configured to transmit, in various elements of the transmission time interval, a feedback signal transmitted in response to a signal from one transmitting antenna of a base station and another feedback signal transmitted in response to a signal from another transmitting antenna of the same base station. 34. A base station comprising:
a receiving module, configured to receive a signal obtained by multiplexing a channel with competitive access and a channel with non-competitive access;
a demultiplexing module configured to demultiplex a channel with competitive access and a channel with non-competitive access from the received signal;
moreover, scheduling at the base station before transmitting the indicated multiplexed channels is not performed for the channel with competitive access and is performed for the channel with non-competitive access, the channel with competitive access includes one or more of the following channels:
a quick access channel, a reservation channel, and an uplink synchronization channel, and a non-competitive access channel includes one or more of the following channels: an upstream public data channel and an uplink public control channel, wherein
the quick access channel contains information flow data, or control data, or a combination thereof, said data flow information and control data having a data size smaller than a predetermined value,
the reservation channel contains non-competitive access channel planning request information, and
the upstream public data channel contains information flow data or control data or a combination thereof. 35. The base station according to claim 34, characterized in that it is configured to transmit an instruction signal to each of the plurality of mobile stations in such a way that the plurality of uplink public control channels are multiplexed for a plurality of users by a frequency multiplexing method, or a code multiplexing method, or a combination. 36. The base station according to claim 35, characterized in that it is adapted to transmit an instruction signal to each of the plurality of mobile stations in such a way that the plurality of uplink public control channels corresponding to the plurality of users are multiplexed by a frequency multiplexing method if the number of users is less than or equal to a predetermined number, and are multiplexed by frequency multiplexing and code multiplexing methods, if the number of users exceeds this predetermined e number. 37. The base station according to claim 35, characterized in that it is configured to transmit an instruction signal to each of the plurality of mobile stations in such a way that the upstream public control channels corresponding to a plurality of users have a plurality of frequency components located in predetermined frequency ranges. 38. The base station according to clause 34, wherein the upstream public control channel contains either one of the mandatory control information for transmission and associated with the upstream public data channel, and control information with the exception of mandatory control information, or a combination thereof, the base station is configured to transmit an instruction signal to each of the plurality of mobile stations in such a way that mandatory control information from one mobile station and information controls with the exception of mandatory information from another mobile station are received in the same frequency band in the same time interval. 39. The base station according to clause 34, wherein the upstream public control channel contains either one of the mandatory control information for transmission and associated with the upstream public data channel, and control information with the exception of mandatory control information, or a combination thereof, the base station is configured to transmit an instruction signal to each of the plurality of mobile stations in such a way that the radio resources of the mandatory control information from one mobile Antium and control information excluding binding information from another mobile station or on different frequency band, or over a time interval, or by combinations thereof. 40. The base station according to clause 34, wherein the upstream public control channel contains either one of the mandatory control information for transmission and associated with the upstream public data channel, and control information with the exception of mandatory control information, or a combination thereof the base station is configured to prepare a frequency band used in transmitting control information with the exception of mandatory control information other than the frequency band for new management information. 41. The base station according to clause 34, wherein the upstream public control channel contains either one of the mandatory control information for transmission and associated with the upstream public data channel, and control information with the exception of mandatory control information, or a combination thereof, control information with the exception of mandatory control information is transmitted in a frequency band narrower than the frequency band for a public data channel. 42. The base station according to claim 34, characterized in that it is adapted to receive a signal using a frequency band occupied by one or more resource blocks included in the frequency blocks of the system, which are included in the frequency band provided to the system. 43. The base station according to paragraph 42, wherein the frequency blocks of the system are determined based on the maximum transmission bandwidth of the lowest level mobile station. 44. The base station according to claim 42, wherein the uplink public data channel contains control information with the exception of mandatory control information for transmission and associated with the uplink public data channel, wherein the base station is configured to provide the mobile station with a predetermined frequency change pattern so that there is a change in the resource blocks used to transmit the uplink public control channel. 45. The base station according to item 44, wherein the mobile station, which is assigned an upstream public data channel, transmits mandatory control information and control information with the exception of mandatory control information using resource blocks to which this upstream public data channel has been assigned, even when changing the used resource blocks in accordance with the frequency change pattern. 46. The base station according to claim 42, wherein the uplink public data channel contains control information with the exception of mandatory control information for transmission and associated with the uplink public data channel, wherein the base station is configured to transmit to each of a plurality of mobile stations an instruction signal such that resource blocks used to transmit an uplink public control channel are shared among a plurality of users. 47. The base station according to clause 34, characterized in that it is configured to control a combination of the modulation method and the encoding method used to process the upstream public control channel, which is carried out depending on at least one of the indicators:
channel status and the amount of information to transmit. 48. The base station according to clause 47, characterized in that it further includes a memory module for storing the corresponding relationship between the quality information of the channel received at the base station, a combination of a modulation method and an encoding method of the uplink public control channel and the transmit power of the uplink public channel management. 49. The base station according to clause 47, characterized in that it further includes a memory module for storing information about the corresponding relationship between the channel quality information received at the base station, a combination of a modulation method and an encoding method of an uplink public control channel and power and period transmitting the uplink public control channel. 50. The base station according to clause 47, characterized in that it is configured to control transmission from the mobile station so that the number of characters changes in accordance with the number of bits required for the control information and the channel status when transmitting an uplink public control channel in conjunction with upstream public data channel. 51. A method for communicating, comprising the following steps:
multiplexing a channel with competitive access and a channel with non-competitive access;
transmission of multiplexed channels with competitive access and non-competitive access;
moreover, scheduling at the base station before transmitting said multiplexed channels is not performed for a channel with competitive access and is performed for a channel with non-competitive access, the channel with competitive access includes one or more of the following channels: quick access channel, reservation channel, and uplink synchronization channel, and a non-competitive access channel includes one or more of the following channels:
an uplink public data channel and an uplink public control channel, wherein
the quick access channel contains information flow data, or control data, or a combination thereof, said data flow information and control data having a data size smaller than a predetermined value,
the reservation channel contains non-competitive access channel planning request information, and
the upstream public data channel contains information flow data, or control data, or a combination thereof.

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