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WO2015143722A1 - 信道接入控制方法、装置及相关设备 - Google Patents

信道接入控制方法、装置及相关设备 Download PDF

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Publication number
WO2015143722A1
WO2015143722A1 PCT/CN2014/074319 CN2014074319W WO2015143722A1 WO 2015143722 A1 WO2015143722 A1 WO 2015143722A1 CN 2014074319 W CN2014074319 W CN 2014074319W WO 2015143722 A1 WO2015143722 A1 WO 2015143722A1
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WO
WIPO (PCT)
Prior art keywords
terminal
resource
indication
window
information
Prior art date
Application number
PCT/CN2014/074319
Other languages
English (en)
French (fr)
Inventor
杨讯
刘亚林
巴勃⋅菲利普
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/074319 priority Critical patent/WO2015143722A1/zh
Priority to CN201480069616.2A priority patent/CN105850078B/zh
Publication of WO2015143722A1 publication Critical patent/WO2015143722A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel access control method, apparatus, and related device. Background technique
  • Orthogonal Frequency Division Multiplexing is the basic transmission method for wireless communication. It is widely used in LTE (Long Term Evolution) and WiMAX (Worldwide Interoperabiation for Microwave Access). Wireless communication systems such as access) and WiFi. Not only that, OFDM is further applied to fixed network transmission, such as fiber, copper strand, cable and other transmission methods.
  • the basic principle of OFDM is to reduce the subcarrier spacing to a minimum within the range allowed by the orthogonality of subcarriers. This aspect can ensure the formation of multiple parallel and non-interfering paths, and at the same time improve the frequency utilization efficiency of the system. .
  • OFDM Since OFDM has the above characteristics, if OFDM non-interfering subcarriers are allocated to a plurality of users, OFDM can be utilized for multi-user access or data transmission.
  • This is 0FDMA (Orthogonal Frequency Division Multiple Access).
  • the data In the 0FDMA communication mode, the data is sent by the transmitting end to the subcarriers/sub-channels through the corresponding subcarriers/subchannels. The receiving end of the channel association.
  • the transmission mode of 0FDMA requires that data on all subcarriers/subchannels be transmitted synchronously, and the data of each user (i.e., the receiving end) is orthogonalized by the corresponding subcarrier/subchannel when transmitting synchronously. Therefore, 0FDMA can flexibly and conveniently schedule multiple users to transmit data at the same time, which is beneficial to achieve multi-user diversity.
  • 0FDMA also supports multiple discrete sub-channel scheduling, which can more effectively utilize blank frequency bands.
  • the present invention provides a channel access control method, apparatus, and related device to solve the problem that the user cannot be provided with timely scheduling.
  • the present invention provides a channel access control apparatus, which is applied to an access point device, and the device package Includes:
  • a contention allocation unit configured to allocate, to the terminal, a contention window for accessing the channel in an uplink transmission phase
  • a window indication generating unit configured to generate a window indication according to the contention window, the window indication being used to indicate the contention window s position
  • a window indication sending unit configured to send the window indication to the terminal
  • a terminal information receiving unit configured to receive terminal information that is sent by the terminal according to the window indication in a contention window of an uplink transmission phase
  • a target resource allocation unit configured to allocate a target resource to the terminal according to the terminal information
  • a resource indication generating unit configured to generate a resource indication according to the target resource, where the resource indication is used to indicate a location of the target resource
  • a resource indication sending unit configured to send the resource indication to the terminal.
  • the contention window allocation unit includes:
  • a time dimension information determining unit configured to determine time dimension information in an uplink transmission phase, where the time dimension information includes at least a start time and a time length in a time dimension;
  • a frequency dimension information determining unit configured to determine frequency dimension information in an uplink transmission phase, where the frequency dimension information includes at least a starting frequency and a frequency width in a frequency dimension;
  • a competition window determining unit configured to determine a resource window formed by the time dimension information and the frequency dimension information as a contention window allocated to the terminal.
  • the contention window allocation unit includes:
  • a time dimension information determining unit configured to determine time dimension information in an uplink transmission phase, where the time dimension information includes at least a start time and a time length in a time dimension;
  • a contention window determining unit is configured to determine a resource window formed by the time dimension information as a contention window allocated to the terminal.
  • the contention window allocation unit further includes:
  • a number allocation unit configured to number resource blocks in the contention window, where the window indication includes the number
  • a competition determining unit configured to determine, in the frequency dimension within the contention window, for sending in the contention window The width of the competition unit that sends the competition short frame and the preset modulation method used by the competition and the preset coding mode.
  • the terminal information receiving unit includes:
  • a first receiving subunit configured to receive a random number sent by the terminal according to the window indication in the contention window, and a random number determining unit, configured to: when receiving the random number in the contention window, Determining whether the resource block occupied by the random number in the contention window is one; the first terminal information determining unit, configured to use the random number as the terminal when the resource block occupied by the random number is one Information
  • a second receiving subunit configured to receive a terminal code or a contending short frame that is sent by the terminal according to the window indication in the contention window, where the terminal code is generated by using a preset encoding manner, where the preset encoding manner includes
  • the orthogonal coding mode includes the terminal identifier in the contention short frame
  • the second terminal information determining unit is configured to use the terminal code as the terminal information, or use the terminal identifier as the terminal information.
  • the content of the content request information corresponding to the terminal identifier, the target resource, The allocation unit includes:
  • a first resource request information extracting unit configured to extract resource request information corresponding to the terminal identifier from the contention short frame
  • a first resource allocation subunit configured to allocate, according to the resource request information, a data resource for transmitting data to the terminal, and use the data resource as a target resource.
  • the target resource allocation unit includes:
  • a requesting resource allocation unit configured to allocate, according to the terminal information, a request resource for sending the resource request information to the terminal;
  • a request indication generating unit configured to generate a request indication according to the request resource, and send the request indication to the terminal, where the request indication is used to indicate a location of the requested resource
  • a second resource request information extracting unit configured to extract resource request information sent by the terminal according to the request indication from the request resource
  • a second resource allocation subunit configured to allocate a data resource for transmitting data to the terminal according to the resource request information, and use the data resource as a target resource.
  • the present invention provides a channel access control apparatus, which is applied to a terminal, where the apparatus includes: a window indication receiving unit, configured to receive a window indication sent by an access point device, where the window indication is used to refer to Showing the location of the contention window for channel access in the uplink transmission phase;
  • a terminal information sending unit configured to send terminal information of the terminal to the access point device in the contention window in an uplink transmission phase according to the window indication
  • a resource indication receiving unit configured to receive a resource indication returned by the access point device according to the terminal information, where the resource indication is used to indicate a location of the target resource allocated by the access point device to the terminal.
  • the terminal information sending unit includes:
  • a random number generating unit configured to generate a random number according to the window indication, and use the random number as the terminal information
  • a first resource block selecting unit configured to randomly select a resource block in the contention window
  • a random number sending unit configured to send the random number to the access point device in the selected resource block
  • the coding mode extracting unit is configured to extract a target coding mode from the window indication, where the target coding mode includes an orthogonal coding mode, and a coding unit that uses the target coding mode to encode the terminal identifier of the terminal.
  • a terminal code and the terminal code is used as the terminal information;
  • a second resource block selecting unit is configured to randomly select a resource block in the contention window;
  • a terminal code sending unit is configured to Transmitting, by the access point device, the terminal code;
  • a contention short frame generating unit configured to generate a contention short frame according to the window indication, where the contention short frame includes a terminal identifier, and the terminal identifier is used as the terminal information;
  • the contention short frame is sent to the access point device in the contention window.
  • the contention requesting information corresponding to the terminal identifier, the resource indication, includes:
  • a first resource indication receiving subunit configured to receive a resource indication returned by the access point device according to the resource request information, where the resource indication is used to indicate that the access point device allocates to the location according to the resource request information The location of the target resource of the terminal, where the target resource is a data resource for transmitting data.
  • the resource indication receiving unit includes:
  • a request indication receiving unit configured to receive a request indication returned by the access point device according to the terminal information, where the request indication is used to indicate that the access point device allocates a request to the terminal for sending resource request information The location of the resource;
  • a resource request information generating unit configured to generate resource request information according to the request indication;
  • a resource request sending unit configured to send the resource request information to the access point device in the request resource
  • a second resource indication receiving subunit configured to receive a resource indication returned by the access point device according to the resource request information, where the resource indication is used to indicate that the access point device allocates to the location according to the resource request information The location of the target resource of the terminal, where the target resource is a data resource for transmitting data.
  • a channel access control method is applied to an access point device, where the method includes: allocating, to a terminal, a contention window for accessing a channel in an uplink transmission phase;
  • the window indicating a location for indicating the contention window
  • the terminal is allocated a contention window for the terminal to access the channel in the uplink transmission phase, including:
  • time dimension information including at least a start time and a length of time in the time dimension
  • the frequency dimension information including at least a starting frequency and a frequency width in a frequency dimension
  • a resource window composed of the time dimension information and the frequency dimension information is determined as a contention window assigned to the terminal.
  • the terminal allocates a contention window for accessing the channel in the uplink transmission phase, including:
  • time dimension information including at least a start time and a length of time in the time dimension
  • a resource window composed of the time dimension information is determined as a contention window assigned to the terminal.
  • the receiving, by the terminal, the terminal information that is sent in the contention window according to the window includes:
  • the terminal code is generated by using a preset coding manner, where the preset coding mode includes an orthogonal coding mode; Having the terminal identifier in the short frame, using the terminal code as the terminal information, or using the terminal identifier as the terminal information;
  • the terminal Receiving, by the terminal, a random number sent in the contention window according to the window indication, and when receiving the random number in the contention window, determining a resource block occupied by the random number in the contention window Whether it is one or not, when the random number occupies one resource block, the random number is used as the terminal information.
  • the contention requesting information corresponding to the terminal identifier is used to allocate target resources to the terminal, including:
  • the assigning a target to the terminal according to the terminal information The resource includes: allocating, according to the terminal information, a request resource for sending resource request information to the terminal; generating a request indication according to the request resource, and sending the request indication to the terminal, where the request indication is used for Indicate the location of the requested resource;
  • the present invention provides a channel access control method, which is applied to a terminal, where the method includes: receiving a window indication sent by an access point device, where the window indication is used to indicate that the terminal is used for access in an uplink transmission phase. The location of the contention window of the channel;
  • the sending, by the window, the terminal information of the terminal to the access point device in the contention window of the uplink transmission phase including:
  • the target coding mode includes an orthogonal coding mode
  • the terminal identifier of the terminal is encoded by using the target coding mode to obtain a terminal code, where the terminal code is used as the terminal Information, randomly selecting a resource block within the contention window, and transmitting the terminal code to the access point device in the selected resource block;
  • the contention short frame includes a terminal identifier, and the terminal identifier is used as the terminal information, and the contention short frame is sent to the access point device in the contention window.
  • the contention request frame further includes: resource request information corresponding to the terminal identifier, the receiving station
  • the resource indication returned by the access point device according to the terminal information includes:
  • the target resource is a data resource for transmitting data.
  • the receiving, by the receiving, the resource indication that the access point device returns according to the terminal information includes:
  • the target resource is a data resource for transmitting data.
  • the present invention provides an access point device comprising the channel access control device mentioned in the above first aspect or any of the possible implementations of the first aspect.
  • the present invention provides a terminal, comprising the channel access control apparatus in any of the possible implementations of the second aspect or the second aspect.
  • the method and the device allocate the contention window for the access channel in the uplink transmission phase by the terminal, and then receive the terminal information for the access channel sent by the terminal to be accessed in the contention window. And then, according to the received terminal information, the terminal may allocate a target resource, and finally send a resource indication for indicating a location of the resource allocated to the terminal to the terminal, so as to enable the terminal to perform the resource according to the allocated resource. Data transmission or data reception enables the terminal to smoothly access the channel.
  • the method and the device can facilitate the fast and smooth access of the terminal to be accessed to the channel. Compared with the prior art, the method and the device can ensure the transmission efficiency of the system and can also be well received.
  • the terminal that enters the channel provides timely scheduling.
  • FIG. 1 is a schematic structural diagram of a channel access control apparatus according to an exemplary embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a contention window allocation unit according to an exemplary embodiment of the present invention
  • the present invention is a schematic structural diagram of a terminal information receiving unit provided by an exemplary embodiment.
  • FIG. 4 is a schematic structural diagram of another terminal information receiving unit according to an exemplary embodiment of the present invention;
  • FIG. 6 is a schematic structural diagram of another target resource allocation unit according to an exemplary embodiment of the present invention;
  • FIG. 7 is an exemplary embodiment of the present invention -
  • FIG. 8 is a schematic structural diagram of a terminal information sending unit according to an exemplary embodiment of the present invention;
  • FIG. 9 is a schematic diagram of a first embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of still another terminal information sending unit according to an exemplary embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a resource indication receiving unit according to an exemplary embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of a channel access control method according to an exemplary embodiment of the present invention.
  • FIG. The present invention is a schematic flowchart of a channel access control method provided by an exemplary embodiment.
  • FIG. 14 is a signaling diagram of a channel access control method according to an exemplary embodiment of the present invention; - A signaling diagram of another channel access control method provided by the exemplary embodiment;
  • FIG. 16 is a signaling diagram of still another channel access control method according to an exemplary embodiment of the present invention;
  • the present invention - a schematic structural diagram of an access point device provided by an exemplary embodiment;
  • FIG. 18 is a schematic structural diagram of an access point device according to an exemplary embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS Embodiments of the present invention provide a channel access control method and apparatus.
  • a terminal In a normal data transmission process, a terminal may be allocated a contention window for accessing a channel in an uplink transmission phase, and then receive a contention in an uplink transmission phase.
  • the terminal information sent by the terminal having the access channel requirement in the window, and then the terminal may be allocated resources for receiving or transmitting data according to the received terminal information, so that the terminal having the access channel requirement is in the normal data transmission process. Free access to the channel.
  • the contention window is used to acquire the access terminal of the new terminal, so that the new terminal can access the channel smoothly, so that the system transmission efficiency is ensured, and the channel to be accessed is well.
  • the terminal provides timely scheduling.
  • the channel access control method provided by the embodiment of the present invention can be used for all wireless communication systems that acquire channel usage rights based on a contention manner, for example, LTE system, WiMAX, WiFi, and WLAN (Wireless Local Area Networks) In the system, especially a wireless communication system based on the 0FDMA transmission method.
  • FIG. 1 is a schematic structural diagram of a channel access control apparatus according to an exemplary embodiment of the present invention.
  • the device is applied to an access point device.
  • the device includes: a contention window allocating unit 11, a window indication generating unit 12, a window indicating transmitting unit 13, a terminal information receiving unit 14, a target resource allocating unit 15, The resource indication generation unit 16 and the resource indication transmission unit 17.
  • the contention window allocation unit 11 is configured to allocate a contention window for the terminal to access the channel in the uplink transmission phase.
  • the access point device can set a two-dimensional contention window in the time dimension and the frequency dimension of the uplink transmission phase, so that the terminal that is not currently participating in the scheduled transmission can initiate the freely competitive access channel.
  • a terminal that is not involved in scheduling transmission herein may refer to: a new user that enters the coverage of the access point device.
  • the window indication generation unit 12 is for generating a window indication.
  • the window indicates the location of the contention window used to indicate the above allocation.
  • the window indication transmitting unit 13 is for transmitting the window indication to the terminal.
  • the access point device After the access point device allocates the contention window, it generates a window indication and indicates the window to the downlink.
  • the terminal transmits to the terminal, so that the terminal can learn the location of the contention window through the downlink transmission phase, so that the terminal can initiate channel access competition in the contention window.
  • the terminal information receiving unit 14 is configured to receive terminal information that is sent by the terminal according to the window indication in a competition window of an uplink transmission phase.
  • the terminal may send the terminal information of the terminal in the contention window according to the requirements of the access channel, where the terminal information refers to the information used to identify the terminal, and may be the terminal identifier of the terminal itself, for example:
  • the AID (Associated Identity) or the MAC ID (Media Access Control Identity) may also be a random number generated by the terminal or the terminal according to its own terminal identifier according to a preset encoding method.
  • the terminal code obtained by encoding.
  • the access point device can determine the number of terminals that initiate the competition and can distinguish the terminals that initiate the competition.
  • the target resource allocation unit 15 is configured to allocate a target resource to the terminal.
  • the target resource may be a data resource allocated to the terminal for transmitting data, that is, the terminal may directly perform data transmission according to the allocated data resource, for example, receiving data in a data resource in a downlink transmission phase, or in an uplink transmission phase. Send data on the data resource.
  • the target resource may also be a request resource that is sent to the terminal for performing subsequent allocation of the data resource, that is, the terminal may send the resource request information on the allocated target resource, and then the access point device allocates the resource request information according to the resource request information.
  • the resource indication generating unit 16 is configured to generate a resource indication according to the target resource, where the resource indication is used to indicate that the target resource is located in an uplink transmission phase or a downlink transmission phase.
  • the resource indication sending unit 17 is configured to send the resource indication to the terminal.
  • the access point device can transmit the resource indication in the downlink transmission phase so that the terminal that initiated the contention (i.e., the terminal that transmits the terminal information within the contention window) can know the location of the allocated target resource.
  • the device allocates a contention window for accessing the channel in the uplink transmission phase, that is, provides a channel access opportunity for the terminal to be accessed, and then can receive the access to be accessed in the contention window.
  • the terminal information for accessing the channel sent by the terminal and then the terminal may allocate resources for receiving data or transmitting data according to the received terminal information, and finally send a resource indication for indicating the location of the resource allocated to the terminal. Give the terminal.
  • the terminal may perform data transmission or data reception according to the allocated resource, so that the terminal can smoothly access the channel.
  • the device is advantageous when the existing user occupies the channel to send and receive data. Obtaining the access requirement of the terminal to be accessed by using the contention window, so that the terminal to be accessed by the channel can access the channel quickly and smoothly, and the device can be guaranteed in the system compared with the prior art. At the same time of transmission efficiency, it is also possible to provide timely scheduling for terminals to be accessed.
  • the contention window allocating unit 11 may include: a time dimension information determining unit 111, a frequency dimension information determining unit 112, and a contention window determining unit 113.
  • the time dimension information determining unit 111 is for determining time dimension information in the uplink transmission phase.
  • the time dimension information includes at least: a start time TO in the time dimension and a time length ⁇ in the time dimension, that is, the position of the contention window in the time dimension is located at TO ⁇ 0 + ⁇ .
  • the frequency dimension information determining unit 112 is configured to determine frequency dimension information in the uplink transmission phase.
  • the frequency dimension information includes at least: a starting frequency f 0 in the frequency dimension and a frequency width continuing in the frequency dimension, that is, the position of the contention window in the frequency dimension is located at f 0 ⁇ f O + A f .
  • the contention window determining unit 113 is configured to determine the location of the contention window in the uplink transmission phase according to the time dimension information and the frequency dimension information.
  • the contention window allocating unit 11 may further include only the time dimension information determining unit 111 and the contention window determining unit 113, that is, the contention window determining unit 113 may not consider the frequency.
  • the dimension, and only the resource window composed of the time dimension information is determined as the contention window allocated to the terminal, and finally all the frequency bandwidths of the time window corresponding to the time dimension information are used as the contention window.
  • the time dimension information may be the first microsecond to the bth microsecond after the completion of the transmission of the frame, where b is greater than a, and the frequency dimension information may start from the mth pilot symbol after the completion of the frame transmission, and continues to the nth.
  • the pilot symbols end, where n is greater than m, and so on.
  • the frequency dimension it may be a unit directly indicated by Hz (hertz), or may be a unit of frequency strength, or a subcarrier number. That is, as long as it is known to those skilled in the art that the position of the contention window can be determined, it is within the scope of the present invention.
  • the contention window allocating unit 11 may further include: a contention determining unit, configured to determine a width of the competition unit and a preset modulation mode used by the competition and the pre-determination in the frequency dimension within the contention window. Set the encoding method.
  • each competition unit when the contention window is allocated, in addition to indicating the two-dimensional width of the time dimension and the frequency dimension, the width of each competition unit may be further indicated, for example, each competition unit is ⁇ subcarriers. It also specifies one or two combinations of modulation methods and coding methods used in the competition. Since the modulation mode and the coding mode can determine the spectral efficiency n of each subcarrier, the number of bits that each competing unit can carry is ⁇ ⁇ , that is, a total of 2 ⁇ users can be distinguished after all the resources in the contention window are allocated. On the other hand, the number of resource blocks that the access point device can provide is obtained by the total number of time-frequency resources (duration*frequency domain width)/competition unit, so this value indicates the maximum access of the access point device. The number of new users.
  • the terminal may also be allowed to compete freely.
  • the contention window allocating unit 11 may further include: a number allocation unit, configured to be in the contention window The resource blocks are numbered, and the window indication includes the number.
  • the access point device may have a number for each resource block within the contention window, such as from 0 to ⁇ , where N+1 is the total number of resource blocks that the access point device can provide.
  • the terminal can be in the channel competition.
  • a value is randomly generated in the range of [0, 2 ⁇ ⁇ -1], and after a resource block is randomly selected in the contention window, the value is transmitted, and the value randomly generated by the terminal can uniquely determine the terminal.
  • the terminal information receiving unit 14 may include: a first receiving subunit 141, a random number determining unit 142, and a first terminal information determining unit 143.
  • the first receiving subunit 141 is configured to receive a random number sent by the terminal in the contention window according to the window indication.
  • the random number determining unit 142 is configured to determine, when the random number is received in the contention window, whether the resource block occupied by the random number in the contention window is one.
  • a conflict occurs. Specifically, two or more terminals participating in the competition select the same resource block to send a random number. In this case, the access point device cannot The random number is correctly demodulated in the resource block, so by judging that the random number can be extracted, it can be determined whether there are multiple terminals selecting the same resource block to transmit the random number. In this case, since the terminal participating in the competition cannot be determined, Therefore, the access point device usually does not process, that is, the subsequent resources are no longer allocated to the conflicting terminal.
  • the terminal When the terminal is free to compete, another conflict occurs. Specifically, two or more terminals participating in the competition generate the same random number, and different resource blocks are respectively selected to transmit the random number. In this case, although the access point device can demodulate the correct value on different resource blocks, since the demodulated values on different resource blocks are the same, it is impossible to uniquely determine the terminal participating in the competition.
  • the inbound device usually does not process, that is, the subsequent resources are no longer allocated for such conflicting terminals.
  • the first terminal information determining unit 143 is configured to use the random number as the terminal information when the resource block occupied by the random number is one.
  • the terminal information receiving unit 14 may include: a second receiving subunit 144 and a second terminal information determining unit. 145.
  • the second receiving sub-unit 144 is configured to receive the terminal code or the contention short frame transmitted by the terminal in the contention window according to the window indication.
  • the terminal code is generated by using a preset coding mode, where the preset coding mode includes: an orthogonal coding mode or a random coding mode.
  • the preset encoding method is used to generate the code as the identifier.
  • the preset encoding method may be CDMA (Code Division Multiple Access).
  • Encoding The code is generated by encoding, which can make the orthogonal/quasi-orthogonal relationship between the code of the terminal and the terminal, and because of the advantages of orthogonal/quasi-orthogonal, even if two or more terminals are simultaneously Possession of the same competitive resource block, as long as the two or more terminals do not use the same codeword, there will be no competition conflict.
  • the coding method reduces the probability of collision to some extent, in order to support orthogonal codewords, the required contention block is larger, so in general, which solution is adopted in the specific application is based on the specific The situation can be decided.
  • frequency dimension information in a frequency range of 20 MHz as a contention window may be determined, so that the terminal may send a contention short frame to the access station in units of 20 MHz to apply for transmission.
  • Channel access Specifically, the access point device informs the terminal of the cycle time of the contention window reserved in the downlink transmission phase TO ⁇ ! ⁇ + ⁇ ⁇ and the competition unit time Tu, that is, each competing unit time can be time-synchronized on all 20 MHz unit channels.
  • At least in the contention short frame includes: terminal identification.
  • NDP Network Data Packet
  • NDP frames include L-STF (Legacy Short Training Field), L-LTF (Legacy Long Training Field), L-SIG (Legacy Signaling), and new SIG (New Letter) make).
  • L-STF Legacy Short Training Field
  • L-LTF Legacy Long Training Field
  • L-SIG Legacy Signaling
  • new SIG New Letter
  • the second terminal information determining unit 145 is configured to use the terminal code as the terminal information, or use the terminal identifier as the terminal information.
  • the contention request packet may also include resource request information sent by the terminal, such as a transmission bandwidth, a space-time stream of the transmitted signal, and the like.
  • the target resource allocation unit 15 may include: first resource request information extraction. Unit 151 and first resource allocation sub-unit 152.
  • the first resource request information extracting unit 151 is configured to extract resource request information corresponding to the terminal identifier from the contention short frame.
  • the first resource allocation sub-unit 152 is configured to allocate, according to the resource request information, a data resource for transmitting data to the terminal, and use the data resource as a target resource.
  • the access point device directly allocates data resources for receiving data in the downlink transmission phase or transmitting data in the uplink transmission phase according to the resource request information carried in the contending short frame, thereby implementing the terminal to successfully access the channel.
  • the target resource allocation unit 15 may include: a request resource allocating unit 153, a request instructing generating unit 154, a second resource requesting information extracting unit 155, and a second resource allocating subunit 156.
  • the request resource allocation unit 153 is configured to allocate a request resource for transmitting the resource request information to the terminal according to the terminal information.
  • the request indication generating unit 154 is configured to generate a request indication and send the request indication to the terminal, where the request indication is used to indicate a location of the request resource in an uplink transmission phase.
  • the request resource is located in the uplink transmission phase, and the terminal may send the resource request information to the access point device in the request resource in the uplink transmission phase according to the request indication.
  • the second resource request information extracting unit 155 is configured to extract resource request information sent by the terminal according to the request indication from the request resource.
  • the second resource allocation sub-unit 156 is configured to allocate a data resource for transmitting data to the terminal according to the resource request information, and use the data resource as a target resource.
  • FIG. 7 is a schematic structural diagram of a channel access control apparatus according to an exemplary embodiment of the present invention.
  • the present invention further provides a channel access control device, which is applied to a terminal.
  • the device includes: a window indication receiving unit 21, and a terminal information sending unit. 22 and the resource indication receiving unit 23.
  • the window indication receiving unit 21 is configured to receive a window indication sent by the access point device, the window indicating a location of a contention window for indicating channel access for the terminal in the uplink transmission phase.
  • the terminal information sending unit 22 is configured to send, according to the window indication, terminal information of the terminal to the access point device in a contention window in an uplink transmission phase.
  • the resource indication receiving unit 23 is configured to receive a resource indication returned by the access point device according to the terminal information, where the resource indication is used to indicate a location of the target resource allocated by the access point device to the terminal.
  • the terminal information transmitting unit 22 may include: a random number generating unit 211, a first resource block selecting unit 212, and a random number transmitting unit 213.
  • the random number generating unit 211 is configured to generate a random number according to the window indication, and use the random number as the terminal information.
  • the random number generation unit 211 may determine the range of the random number according to the number of the resource block, and further generate the range of the random number. A random number.
  • the first resource block selecting unit 212 is configured to randomly select one resource block within the contention window.
  • the random number transmitting unit 213 is configured to transmit the random number to the access point device in the selected resource block.
  • two or more competing terminals generate the same random number and transmit in different resource blocks, or when two or more competing terminals generate different random numbers, but in the same resource block
  • a contention conflict occurs.
  • the channel access control device for the access point device and details are not described herein.
  • the terminal information transmitting unit 22 may include: an encoding mode extracting unit 224, an encoding unit 225, a second resource block selecting unit 226, and a terminal code transmitting unit 227.
  • the coding mode extraction unit 224 is configured to extract a target coding mode from the window indication, where the target coding mode includes: an orthogonal coding mode and a random coding mode.
  • the encoding unit 225 is configured to encode the terminal identifier of the terminal by using the target encoding manner to obtain a terminal code, and use the terminal code as the terminal information.
  • the second resource block selecting unit 226 is configured to randomly select one resource block within the contention window.
  • a terminal code transmitting unit 227 is configured to transmit the terminal code to the access point device in the selected resource block.
  • the code is generated by encoding, which can make the orthogonal/quasi-orthogonal relationship between the code of the terminal and the terminal, and because of the advantages of orthogonal/quasi-orthogonal, even if two or more terminals are simultaneously Possession of the same competitive resource block, as long as the two or more terminals do not use the same codeword, there will be no competition conflict.
  • the terminal information transmitting unit 22 may include: a contention short frame generation unit 228 and a contention short frame transmission unit 229.
  • the contention short frame generating unit 228 is configured to generate a contention short frame according to the window indication, where the contention short frame includes a terminal identifier, and the terminal identifier is used as the terminal information.
  • the terminal It is possible to send a contention short frame within the contention window.
  • NDP Network Data Packet
  • NDP frames include L-STF (Legacy Short Training Field), L-LTF (Legacy Long Training Field), L-SIG (Legacy Signaling), and new SIG (New Letter) make).
  • L-STF Legacy Short Training Field
  • L-LTF Legacy Long Training Field
  • L-SIG Legacy Signaling
  • new SIG New Letter
  • the contention short frame transmission unit 229 is configured to transmit the contention short frame to the access point device in the contention window.
  • the contention request packet may also include resource request information sent by the terminal, such as a transmission bandwidth, a space-time stream of the transmitted signal, and the like.
  • the resource indication receiving unit 23 may include: the first data resource indication receiving subunit.
  • a first resource indication receiving subunit configured to receive a resource indication returned by the access point device according to the resource request information, where the resource indication is used to indicate that the access point device allocates to the location according to the resource request information The location of the target resource of the terminal, where the target resource is a data resource for transmitting data.
  • the resource indication receiving unit 23 includes: a request indication receiving unit 231, a resource request information generating unit 232, a resource request transmitting unit 233, and a second data resource indicating receiving subunit 234.
  • the request indication receiving unit 231 is configured to receive a request indication that is returned by the access point device according to the terminal information, where the request indication is used to indicate that the access point device allocates a request for the terminal to send resource request information. The location of the resource.
  • the resource request information generating unit 232 is configured to generate resource request information according to the request indication.
  • a resource request sending unit 233 configured to send the resource request information to the access point device in the request resource
  • the second data resource indication receiving sub-unit 234 is configured to receive a resource indication returned by the access point device according to the resource request information, where the resource indication is used to indicate that the access point device allocates according to the resource request information
  • the location of the target resource of the terminal, where the target resource is a data resource for transmitting data are described separately by function into various units. Of course, the functions of the various units may be implemented in one or more software and/or hardware in the practice of the invention.
  • An exemplary embodiment of the present invention further provides a channel access control method, which is applied to an access point device. As shown in FIG. 12, the method may include the following steps:
  • S110 The terminal is allocated a contention window for accessing the channel in the uplink transmission phase.
  • the access point device can set a two-dimensional contention window in the time dimension and the frequency dimension of the uplink transmission phase, so that the terminal that is not currently participating in the scheduled transmission can initiate the freely competitive access channel.
  • a terminal that is not involved in scheduling transmission herein may refer to: a new user that enters the coverage of the access point device.
  • S120 Generate a window indication according to the contention window and send the window indication to the terminal.
  • the window indication is used to indicate the location of the contention window in the uplink transmission phase.
  • the access point device After the access point device completes the contention window, the access point device generates a window indication, and sends the window indication in the downlink transmission phase, so that the terminal can learn the location of the contention window through the downlink data transmission phase, and facilitate the terminal in the contention window. Initiate channel access competition.
  • S130 Receive terminal information that is sent by the terminal according to the window indication in a contention window of an uplink transmission phase.
  • the terminal may send the terminal information of the terminal in the contention window according to the requirements of the access channel, where the terminal information refers to the information used to identify the terminal, and may be the terminal identifier of the terminal itself, for example: AID (Associated Identity) or MAC ID (Media Access Control Identity), which can also be a random number generated by the terminal or The terminal code obtained by the terminal according to its own terminal identifier and encoded according to a preset coding manner.
  • AID Associated Identity
  • MAC ID Media Access Control Identity
  • the access point device can determine the number of terminals that initiate the contention and can distinguish the terminals that initiate the contention.
  • S140 Allocate a target resource to the terminal according to the terminal information.
  • the target resource may be a data resource allocated to the terminal for transmitting data, that is, the terminal may directly perform data transmission according to the allocated data resource, for example, receiving data in a data resource in a downlink transmission phase, or in a transmission phase. Send data on the data resource.
  • the target resource may also be a request resource that is sent to the terminal for performing subsequent allocation of the data resource, that is, the terminal may send the resource request information on the allocated target resource, and then the access point device allocates the resource request information according to the resource request information.
  • the terminal can smoothly access the channel for data transmission.
  • S150 Generate a resource indication according to the target resource, and send the resource indication to the terminal.
  • the resource indication is used to indicate a location of the target resource.
  • the access point device can transmit the resource indication in the downlink transmission phase so that the terminal that initiated the contention (i.e., the terminal that transmits the terminal information within the contention window) can know the location of the allocated target resource.
  • the method allocates a channel access opportunity for the terminal to be accessed in the uplink transmission phase by providing the terminal with a channel access opportunity, and then can receive the access to be accessed in the contention window.
  • the terminal information for accessing the channel sent by the terminal and then the terminal may allocate resources for receiving data or transmitting data according to the received terminal information, and finally send a resource indication for indicating the location of the resource allocated to the terminal. Give the terminal.
  • the terminal After receiving the resource indication, the terminal may perform data transmission or data reception according to the allocated resources, so that the terminal can smoothly access the channel.
  • the method obtains the access requirement of the terminal to be accessed by using the contention window, and allows the terminal to be accessed to access the channel quickly and smoothly. Compared with the prior art, the method can provide timely scheduling for the terminal to be accessed by the channel while ensuring the transmission efficiency of the system.
  • step S110 may include the following steps:
  • Al l Determine time dimension information in the uplink transmission phase, and the time dimension information includes at least a start time and a length of time in the time dimension.
  • Al2 Determine frequency dimension information in an uplink transmission phase, the frequency dimension information including at least a starting frequency and a frequency width in a frequency dimension.
  • Al3 determining a resource window formed by the time dimension information and the frequency dimension information as being allocated to the The competition window of the terminal.
  • the foregoing step S110 may further include only the step a1 and the step al3, that is, regardless of the frequency dimension, only the resource window formed by the time dimension information is determined as The contention window assigned to the terminal will eventually use all the frequency bandwidths of the time window corresponding to the time dimension information as the contention window.
  • contention window allocation unit 11 For details of the contention window, refer to the above description about the contention window allocation unit 11, and details are not described herein again.
  • step S130 may include:
  • Bl l receiving the terminal code or the contention short frame sent by the terminal according to the window indication in the contention window, using the terminal code as the terminal information, and the terminal code is generated by using a preset coding manner, where
  • the preset coding mode includes an orthogonal coding mode; the contention short frame includes a terminal identifier, and the terminal identifier is used as the terminal information.
  • step S130 may include:
  • B21 receiving, by the terminal, a random number sent in the contention window according to the window indication;
  • b22 when receiving the random number in the contention window, determining that the random number is in the contention window Whether the occupied resource block is one;
  • the random number is used as the terminal information.
  • the access point device cannot determine the terminal participating in the competition, and the process ends. That is, the access point device no longer allocates subsequent resources for the conflicting terminal.
  • the random number occupies more than two or more resource blocks, the access point device cannot uniquely determine the terminal participating in the competition, and ends the process.
  • the foregoing step 140 may include:
  • the terminal allocates a data resource for transmitting data according to the resource request information, and uses the data resource as a target resource.
  • the foregoing step 140 may include:
  • C21 The terminal allocates a request resource for sending resource request information according to the terminal information.
  • C22 Generate a request indication according to the request resource, and send the request indication to the terminal, where the request indication is used to indicate a location of the requested resource.
  • C23 Extract resource request information sent by the terminal according to the request indication from the request resource.
  • C24 The terminal allocates a data resource for transmitting data according to the resource request information, and uses the data resource as a target resource.
  • the exemplary embodiment of the present invention further provides a channel access control method, which is applied to a terminal device participating in a competition. As shown in FIG. 13, the method may include the following steps:
  • S210 Receive a window indication sent by the access point device.
  • the window indicates a location for indicating a contention window for the terminal to access the channel during the uplink transmission phase.
  • S220 Send terminal information of the terminal to the access point device in the contention window according to the window indication.
  • step S220 may include:
  • Dl l generating a random number according to the window indication, using the random number as the terminal information; (112: randomly selecting a resource block in the contention window;
  • Dl3 transmitting the random number to the access point device in the selected resource block.
  • step S220 may include:
  • D21 extracting a target coding mode from the window indication, where the target coding mode includes: an orthogonal coding mode;
  • step S220 may include:
  • D31 Generate a contention short frame according to the window indication, where the contention short frame includes a terminal identifier, and the terminal identifier is used as the terminal information;
  • step S220 may include:
  • El l receiving a resource indication returned by the access point device according to the resource request information. And the resource indication is used to indicate a location of the target resource allocated by the access point device to the terminal according to the resource request information, where the target resource is a data resource used for transmitting data.
  • step S220 may include:
  • the request indication is used to indicate a location of the request resource allocated by the access point device to the terminal for sending resource request information
  • E22 generate resource request information according to the request indication
  • E24 Receive a resource indication returned by the access point device according to the resource request information.
  • the resource indication is used to indicate a location of the target resource allocated by the access point device to the terminal according to the resource request information, where the target resource is a data resource used for transmitting data.
  • a signaling diagram of a channel access control method according to an exemplary embodiment of the present invention may include the following steps:
  • S301 The access point device allocates a contention window for the terminal to access the channel in the uplink transmission phase.
  • the access point device generates a window indication according to the contention window and sends a window indication to the terminal.
  • S303 The terminal receives a window indication sent by the access point device.
  • S304 Send terminal information of the terminal to the access point device in the contention window according to the window indication.
  • S305 The access point device receives the terminal information sent by the terminal in the contention window of the uplink transmission phase according to the window indication.
  • S306 The access point device allocates a target resource to the terminal according to the terminal information.
  • the access point device generates a resource indication according to the target resource and sends the resource indication to the terminal.
  • S308 The terminal receives the resource indication returned by the access point device according to the terminal information.
  • the terminal transmits data at a location of the target resource indicated by the resource indication.
  • a signaling diagram of a channel access control method may include the following steps:
  • S401 The access point device allocates a contention window for the terminal to access the channel in the uplink transmission phase.
  • the access point device generates a window indication according to the contention window and sends a window indication to the terminal.
  • the window indication is used to indicate the location of the contention window, and the window indication further includes: a number of the resource block in the contention window or a preset encoding mode.
  • S403 The terminal receives the window indication, and generates a random number or a terminal code according to the window indication.
  • S404 The terminal sends a random number or a terminal code in a contention window in an uplink transmission phase according to the window indication.
  • S405 The access point device receives the random number or terminal code sent by the terminal in the contention window of the uplink transmission phase according to the window indication.
  • S406 The access point device determines whether a random number is received in the resource in the contention window.
  • S408 When the resource block occupied by the random number is one, the access point device uses the random number as the terminal information.
  • the access point device generates a request indication and sends a request indication to the terminal.
  • the request indication is used to indicate the location of the requested resource.
  • S411 The terminal receives the request indication sent by the access point device.
  • S412 The terminal generates resource request information and sends resource request information in an uplink transmission phase.
  • the access point device allocates a data resource for transmitting data to the terminal according to the resource request information.
  • S414 The access point device generates a data resource indication and sends the signal to the terminal.
  • the data resource indication is used to indicate the location of the data resource.
  • S415 The terminal receives the data resource indication sent by the access point device.
  • S416 The terminal uploads data in the data resource in the uplink transmission phase according to the data resource indication.
  • the access point device directly sends data to the terminal in the data resource in the downlink transmission phase.
  • the frequency dimension information in the frequency dimension as the contention window may be determined in the frequency dimension, so that the terminal can send the contention short frame to the access station in units of 20 MHz to apply for transmission.
  • Channel access see FIG. 16, a signaling diagram of a channel access control method according to an exemplary embodiment of the present invention, where the method may include the following steps:
  • S501 The access point device allocates a contention window for the terminal to access the channel in the uplink transmission phase.
  • the competition window has certain time dimension information, and the frequency dimension information in the frequency dimension is determined in units of 20 MHz as the competition window.
  • the access point device generates a window indication according to the contention window and sends the message to the terminal.
  • S503 The terminal receives the window indication sent by the access point device, and generates a contention short frame according to the window indication.
  • S504 The terminal sends a contention short frame in a contention window in an uplink transmission phase, where the contention short frame includes at least: Terminal identification.
  • the access point device receives the contention short frame, and extracts the terminal identifier from the contention short frame.
  • the access point device allocates a request resource for sending resource request information to the corresponding terminal according to the terminal identifier.
  • the access point device generates a request indication and sends a request indication in a downlink transmission phase, where the request indication is used to indicate a location of the requested resource.
  • S508 The terminal acquires the request indication from the downlink transmission phase.
  • S509 The terminal generates resource request information and sends the resource request information in the request resource in the uplink transmission phase.
  • the access point device allocates a data resource for transmitting data to the terminal according to the resource request information.
  • the access point device generates a data resource indication and sends a data resource indication in a downlink transmission phase, where the data resource indication is used to indicate a location of the data resource.
  • S512 The terminal acquires a data resource indication from a downlink transmission phase.
  • S513 The terminal uploads data in the data resource in the uplink transmission phase according to the data resource indication.
  • the access point device directly sends data to the terminal in the data resource in the downlink transmission phase.
  • the step S504 may be directly followed to the step S511.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a medium that can store program codes, such as a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the access point device includes: a transmitter 1, a receiver 2, and a processor 3, where:
  • the transmitter 1 is configured to send information to the terminal, and the receiver 2 is configured to receive information sent by the terminal;
  • Processor 3 is used to execute the following programs:
  • the processor 3 may also execute all the programs corresponding to the channel access control method in the foregoing method embodiment shown in FIG.
  • a terminal is also provided in the embodiment of the present invention.
  • the terminal includes: a transmitter 1, a receiver 2, and a processor 3, where:
  • the transmitter 1 is configured to send information to the access point device, and the receiver 2 is configured to receive information that the access point device is transmitting;
  • Processor 3 is used to execute the following programs:
  • the window indicating a location for indicating a contention window of the terminal for accessing the channel in an uplink transmission phase
  • the processor 3 may further execute all the programs corresponding to the channel access control method in the foregoing embodiment shown in FIG.
  • the method and apparatus provided by the embodiments of the present invention allocate a channel for accessing a channel in an uplink transmission phase, that is, provide a channel access opportunity for a terminal to be accessed, and then connect in a contention window.
  • the resource indication of the location is sent to the terminal, so that the terminal can perform data transmission or data reception according to the allocated resources, so that the terminal can smoothly access the channel.
  • the method and the device obtain the access requirement of the terminal to be accessed by using the contention window, and allocate the corresponding target resource to the terminal, so that the terminal to be accessed by the channel can be conveniently used.
  • the method and the device can provide timely scheduling for the terminal to be accessed by the channel while ensuring the transmission efficiency of the system, as compared with the prior art.

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Abstract

本发明公开了一种信道接入控制方法、装置及相关设备,该装置包括:竞争窗口分配单元,用于为终端分配在上行传输阶段用于接入信道的竞争窗口;窗口指示生成单元,用于根据所述竞争窗口生成窗口指示;窗口指示发送单元,用于向所述终端发送所述窗口指示;终端信息接收单元,用于接收所述终端根据所述窗口指示在上行传输阶段的竞争窗口内发送的终端信息;目标资源分配单元,用于根据所述终端信息为所述终端分配目标资源;资源指示生成单元,用于根据所述目标资源生成资源指示;资源指示发送单元,用于向所述终端发送所述资源指示。该装置可以在保证系统传输效率的同时,还能够很好地为待接入信道的终端提供及时调度。

Description

信道接入控制方法、 装置及相关设备
技术领域 本发明涉及通信技术领域,特别是涉及一种信道接入控制方法、装置及相关设备。 背景技术
OFDM ( Orthogonal Frequency Division Multiplexing, 正交步员分复用) 是当前 无线通信的基本传输方式,广泛应用于 LTE ( Long Term Evolution,长期演进)、 WiMAX (Worldwide Interoperabi l ity for Microwave Access, 全球微波互联接入)、 WiFi 等无线通信系统。 不仅如此, OFDM 也进一步应用到固网传输, 比如光纤、 铜绞线、 电缆等传输方式。 OFDM 的基本原理是利用子载波的正交性容许的范围内, 将子载波 间隔压缩到最小,这一方面能保证形成多路并行且互不干扰的通路, 同时又能提升系 统的频率利用效率。
由于 OFDM具有以上特性, 如果将 OFDM的互不干扰的子载波分配给多个用户, 就 能利用 OFDM 来实现多用户的接入或者数据传输。 这就是 0FDMA ( Orthogonal Frequency Division Multiple Access, 正交频分多址), 0FDMA通信方式发送数据 就是发送端将多个接收端的数据通过各自对应的子载波 /子信道发送给与所述子载波 /子信道关联的接收端。 0FDMA 的发送方式要求所有子载波 /子信道上的数据同步发 送, 各用户 (即接收端) 的数据在同步发送时通过各自对应的子载波 /子信道保持正 交。因此 0FDMA能灵活的方便调度多个用户同时传输数据,有利于实现多用户分集的 效果; 另外, 0FDMA还支持多个离散子信道调度, 可以更有效的利用空白的频段。
虽然 0FDMA能灵活支持多用户传输的特性,但已有用户在占用信道收发数据的同 时无法获知是否还有其它用户的信道接入需求, 进而无法为其它用户提供及时的调 度。 发明内容 本发明提供了一种信道接入控制方法、装置及相关设备, 以解决无法为用户提供 及时的调度的问题。
为了解决上述技术问题, 本发明公开了如下技术方案:
第一方面, 本发明提供一种信道接入控制装置, 应用于接入点设备, 所述装置包 括:
竞争窗口分配单元, 用于为终端分配在上行传输阶段用于接入信道的竞争窗口; 窗口指示生成单元,用于根据所述竞争窗口生成窗口指示,所述窗口指示用于指 示所述竞争窗口的位置;
窗口指示发送单元, 用于向所述终端发送所述窗口指示;
终端信息接收单元,用于接收所述终端根据所述窗口指示在上行传输阶段的竞争 窗口内发送的终端信息;
目标资源分配单元, 用于根据所述终端信息为所述终端分配目标资源; 资源指示生成单元,用于根据所述目标资源生成资源指示,所述资源指示用于指 示所述目标资源的位置;
资源指示发送单元, 用于向所述终端发送所述资源指示。
结合第一方面,在第一方面第一种可能的实现方式中,所述竞争窗口分配单元包 括:
时间维度信息确定单元,用于确定上行传输阶段中的时间维度信息,所述时间维 度信息至少包括时间维度上的起始时间和时间长度;
频率维度信息确定单元,用于确定上行传输阶段中的频率维度信息,所述频率维 度信息至少包括频率维度上的起始频率和频率宽度;
竞争窗口确定单元,用于将所述时间维度信息和所述频率维度信息构成的资源窗 口确定为分配给所述终端的竞争窗口。
结合第一方面,在第一方面第二种可能的实现方式中,所述竞争窗口分配单元包 括:
时间维度信息确定单元,用于确定上行传输阶段中的时间维度信息,所述时间维 度信息至少包括时间维度上的起始时间和时间长度;
竞争窗口确定单元,用于将所述时间维度信息构成的资源窗口确定为分配给所述 终端的竞争窗口。
结合第一方面第一种或第二种可能的实现方式,在第一方面第三种可能的实现方 式中, 所述竞争窗口分配单元还包括:
编号分配单元,用于对所述竞争窗口内的资源块进行编号,所述窗口指示包括所 述编号;
和 /或,
竞争确定单元,用于在所述竞争窗口内频率维度上确定用于在所述竞争窗口内发 送竞争短帧的竞争单位的宽度和竞争采用的预设调制方式以及预设编码方式。
结合第一方面,在第一方面第四种可能的实现方式中,所述终端信息接收单元包 括:
第一接收子单元,用于接收所述终端根据所述窗口指示在所述竞争窗口内发送的 随机数, 随机数判断单元, 用于当在所述竞争窗口内接收到所述随机数时, 判断所述 随机数在所述竞争窗口内占用的资源块是否为一个; 第一终端信息确定单元,用于当 所述随机数占用的资源块为一个时, 将所述随机数作为所述终端信息;
和 /或,
第二接收子单元,用于接收所述终端根据所述窗口指示在所述竞争窗口内发送的 终端代码或竞争短帧,所述终端代码采用预设编码方式生成,所述预设编码方式包括 正交编码方式, 所述竞争短帧内包括终端标识; 第二终端信息确定单元, 用于将所述 终端代码作为所述终端信息, 或, 将所述终端标识作为所述终端信息。
结合第一方面第四种可能的实现方式,在第一方面第五种可能的实现方式中,所 述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述目标资源分配单 元包括:
第一资源请求信息提取单元,用于从所述竞争短帧内提取与所述终端标识相对应 的资源请求信息;
第一资源分配子单元,用于根据所述资源请求信息为所述终端分配用于传输数据 的数据资源, 并将所述数据资源作为目标资源。
结合第一方面或第一方面第一种、第二种、第三种或第四种可能的实现方式, 在 第一方面第六种可能的实现方式中, 所述目标资源分配单元包括:
请求资源分配单元,用于根据所述终端信息为所述终端分配用于发送资源请求信 息的请求资源;
请求指示生成单元,用于根据所述请求资源生成请求指示并将所述请求指示向所 述终端发送, 所述请求指示用于指示所述请求资源的位置;
第二资源请求信息提取单元,用于从所述请求资源内提取所述终端根据所述请求 指示发送的资源请求信息;
第二资源分配子单元,用于根据所述资源请求信息为所述终端分配用于传输数据 的数据资源, 并将所述数据资源作为目标资源。
第二方面, 本发明提供一种信道接入控制装置, 应用于终端, 所述装置包括: 窗口指示接收单元,用于接收接入点设备发送的窗口指示,所述窗口指示用于指 示终端在上行传输阶段用于信道接入的竞争窗口的位置;
终端信息发送单元,用于根据所述窗口指示在上行传输阶段中的所述竞争窗口内 向所述接入点设备发送所述终端的终端信息;
资源指示接收单元, 用于接收所述接入点设备根据所述终端信息返回的资源指 示, 所述资源指示用于指示所述接入点设备分配给所述终端的目标资源的位置。
结合第二方面,在第二方面第一种可能的实现方式中,所述终端信息发送单元包 括:
随机数生成单元,用于根据所述窗口指示生成一个随机数, 并将所述随机数作为 所述终端信息; 第一资源块选择单元, 用于在所述竞争窗口内随机选择一个资源块; 随机数发送单元, 用于在所选资源块中向所述接入点设备发送所述随机数;
或,
编码方式提取单元,用于从所述窗口指示中提取目标编码方式,所述目标编码方 式包括正交编码方式; 编码单元,用于利用所述目标编码方式对所述终端的终端标识 进行编码得到终端代码,并将所述终端代码作为所述终端信息;第二资源块选择单元, 用于在所述竞争窗口内随机选择一个资源块; 终端代码发送单元,用于在所选资源块 中向所述接入点设备发送所述终端代码;
或,
竞争短帧生成单元,用于根据所述窗口指示生成竞争短帧,所述竞争短帧内包括 终端标识, 并将所述终端标识作为所述终端信息; 竞争短帧发送单元, 用于在所述竞 争窗口中向所述接入点设备发送所述竞争短帧。
结合第二方面第一种可能的实现方式,在第二方面第二种可能的实现方式中,所 述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述资源指示接收单 元包括:
第一资源指示接收子单元,用于接收所述接入点设备根据所述资源请求信息返回 的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息分配给所 述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
结合第二方面第一种或第二种可能的实现方式,在第二方面第三种可能的实现方 式中, 所述资源指示接收单元包括:
请求指示接收单元, 用于接收所述接入点设备根据所述终端信息返回的请求指 示,所述请求指示用于指示所述接入点设备分配给所述终端用于发送资源请求信息的 请求资源的位置; 资源请求信息生成单元, 用于根据所述请求指示生成资源请求信息;
资源请求发送单元,用于在所述请求资源内向所述接入点设备发送所述资源请求 信息;
第二资源指示接收子单元,用于接收所述接入点设备根据所述资源请求信息返回 的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息分配给所 述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
第三方面, 本发明一种信道接入控制方法, 应用于接入点设备, 所述方法包括: 为终端分配在上行传输阶段用于接入信道的竞争窗口;
根据所述竞争窗口生成窗口指示并向所述终端发送所述窗口指示,所述窗口指示 用于指示所述竞争窗口的位置;
接收所述终端根据所述窗口指示在上行传输阶段的竞争窗口内发送的终端信息; 根据所述终端信息为所述终端分配目标资源;
根据所述目标资源生成资源指示并向所述终端发送所述资源指示,所述资源指示 用于指示所述目标资源的位置。
结合第三方面,在第三方面第一种可能的实现方式中,所述为终端分配在上行传 输阶段用于接入信道的竞争窗口, 包括:
确定上行传输阶段中的时间维度信息,所述时间维度信息至少包括时间维度上的 起始时间和时间长度;
确定上行传输阶段中的频率维度信息,所述频率维度信息至少包括频率维度上的 起始频率和频率宽度;
将所述时间维度信息和所述频率维度信息构成的资源窗口确定为分配给所述终 端的竞争窗口。
结合第三方面,在第三方面第二种可能的实现方式中,所述为终端分配在上行传 输阶段用于接入信道的竞争窗口, 包括:
确定上行传输阶段中的时间维度信息,所述时间维度信息至少包括时间维度上的 起始时间和时间长度;
将所述时间维度信息构成的资源窗口确定为分配给所述终端的竞争窗口。
结合第三方面,在第三方面第三种可能的实现方式中,所述接收所述终端根据所 述窗口指示在所述竞争窗口内发送的终端信息, 包括:
接收所述终端根据所述窗口指示在所述竞争窗口内发送的终端代码或竞争短帧, 所述终端代码采用预设编码方式生成,所述预设编码方式包括正交编码方式; 所述竞 争短帧内包括终端标识, 将所述终端代码作为所述终端信息, 或, 将所述终端标识作 为所述终端信息;
或,
接收所述终端根据所述窗口指示在所述竞争窗口内发送的随机数,当在所述竞争 窗口内接收到所述随机数时,判断所述随机数在所述竞争窗口内占用的资源块是否为 一个, 当所述随机数占用的资源块为一个时, 将所述随机数作为所述终端信息。
结合第三方面第三种可能的实现方式,在第三方面第四种可能的实现方式中,所 述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述根据所述终端信 息为所述终端分配目标资源, 包括:
从所述竞争短帧内提取与所述终端标识相对应的资源请求信息;
根据所述资源请求信息为所述终端分配用于传输数据的数据资源,并将所述数据 资源作为目标资源。
结合第三方面或第三方面第一种、第二种或第三种可能的实现方式,在第三方面 第五种可能的实现方式中, 所述根据所述终端信息为所述终端分配目标资源, 包括: 根据所述终端信息为所述终端分配用于发送资源请求信息的请求资源; 根据所述请求资源生成请求指示并将所述请求指示向所述终端发送,所述请求指 示用于指示所述请求资源的位置;
从所述请求资源内提取所述终端根据所述请求指示发送的资源请求信息; 根据所述资源请求信息为所述终端分配用于传输数据的数据资源,并将所述数据 资源作为目标资源。
第四方面, 本发明提供一种信道接入控制方法, 应用于终端, 所述方法包括: 接收接入点设备发送的窗口指示,所述窗口指示用于指示终端在上行传输阶段用 于接入信道的竞争窗口的位置;
根据所述窗口指示在所述竞争窗口内向所述接入点设备发送所述终端的终端信 息;
接收所述接入点设备根据所述终端信息返回的资源指示,所述资源指示用于指示 所述接入点设备分配给所述终端的目标资源的位置。
结合第四方面,在第四方面第一种可能的实现方式中,所述根据所述窗口指示在 上行传输阶段的竞争窗口内向所述接入点设备发送终端的终端信息, 包括:
根据所述窗口指示生成一个随机数,将所述随机数作为所述终端信息,在所述竞 争窗口内随机选择一个资源块, 在所选资源块中向所述接入点设备发送所述随机数; 或者,
从所述窗口指示中提取目标编码方式,所述目标编码方式包括正交编码方式,利 用所述目标编码方式对所述终端的终端标识进行编码得到终端代码,将所述终端代码 作为所述终端信息,在所述竞争窗口内随机选择一个资源块,在所选资源块中向所述 接入点设备发送所述终端代码;
或,
根据所述窗口指示生成竞争短帧,所述竞争短帧内包括终端标识,将所述终端标 识作为所述终端信息, 在所述竞争窗口中向所述接入点设备发送所述竞争短帧。
结合第四方面第一种可能的实现方式,在第四方面第二种可能的实现方式中,所 述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述接收所述接入点 设备根据所述终端信息返回的资源指示, 包括:
接收所述接入点设备根据所述资源请求信息返回的资源指示,所述资源指示用于 指示所述接入点设备根据所述资源请求信息分配给所述终端的目标资源的位置,所述 目标资源为用于传输数据的数据资源。
结合第四方面第一种或第二种可能的实现方式,在第四方面第三种可能的实现方 式中, 所述接收所述接入点设备根据所述终端信息返回的资源指示, 包括:
接收所述接入点设备根据所述终端信息返回的请求指示,所述请求指示用于指示 所述接入点设备分配给所述终端用于发送资源请求信息的请求资源的位置;
根据所述请求指示生成资源请求信息;
在所述请求资源内向所述接入点设备发送所述资源请求信息;
接收所述接入点设备根据所述资源请求信息返回的资源指示,所述资源指示用于 指示所述接入点设备根据所述资源请求信息分配给所述终端的目标资源的位置,所述 目标资源为用于传输数据的数据资源。
第五方面,本发明提供一种接入点设备,包括上述第一方面或第一方面任一可能 实现的方式中所提及的信道接入控制装置。
第六方面,本发明提供一种终端,包括上述第二方面或第二方面任一可能的实现 方式中的信道接入控制装置。
由以上技术方案可见,该方法及装置通过为终端分配在上行传输阶段中用于接入 信道的竞争窗口,然后可以在竞争窗口内接收待接入的终端发送的用于接入信道的终 端信息, 再根据接收到的终端信息可以为终端分配目标资源,最后将用于指示分配给 终端的资源的位置的资源指示发送给终端,以便于使终端能够根据所分配的资源进行 数据发送或数据接收, 实现终端顺利接入信道。该方法及装置方便待接入信道的终端 可以快速、顺利地接入到信道中, 与现有技术相比, 该方法及装置可以在保证系统传 输效率的同时, 还能够很好地为待接入信道的终端提供及时调度。 附图说明 为了更清楚地说明本发明实施例的技术方案,下面将对实施例中所需要使用的附 图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于 本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获 得其他的附图。
图 1为本发明- -示例性实施例提供的一种信道接入控制装置的结构示意图; 图 2为本发明- -示例性实施例提供的一种竞争窗口分配单元的结构示意图; 图 3为本发明- -示例性实施例提供的一种终端信息接收单元的结构示意图; 图 4为本发明- -示例性实施例提供的另一种终端信息接收单元的结构示意图; 图 5为本发明- -示例性实施例提供的一种目标资源分配单元的结构示意图; 图 6为本发明- -示例性实施例提供的另一种目标资源分配单元的结构示意图; 图 7为本发明- -示例性实施例提供的一种信道接入控制装置的结构示意图; 图 8为本发明一 -示例性实施例提供的一种终端信息发送单元的结构示意图; 图 9为本发明一 -示例性实施例提供的另一种终端信息发送单元的结构示意图; 图 10为本发明- -示例性实施例提供的又一种终端信息发送单元的结构示意图; 图 11为本发明- -示例性实施例提供的一种资源指示接收单元的结构示意图 图 12为本发明- -示例性实施例提供的一种信道接入控制方法的流程示意图 图 13为本发明- -示例性实施例提供的一种信道接入控制方法的流程示意图 图 14为本发明- -示例性实施例提供的一种信道接入控制方法的信令图; 图 15为本发明- -示例性实施例提供的另一种信道接入控制方法的信令图; 图 16为本发明- -示例性实施例提供的又一种信道接入控制方法的信令图; 图 17为本发明- -示例性实施例提供的接入点设备的结构示意图;
图 18为本发明- -示例性实施例提供的接入点设备的结构示意图。 具体实施方式 本发明实施例提供一种信道接入控制方法及装置,在正常数据传输过程中,可以 为终端分配在上行传输阶段用于接入信道的竞争窗口,然后在上行传输阶段接收竞争 窗口内的有接入信道需求的终端发送的终端信息,然后根据接收到的终端信息可以为 终端分配用于接收或发送数据的资源,从而实现有接入信道需求的终端在正常数据传 输过程中可以自由接入信道。该方法或装置正常调度传输时,利用竞争窗口获取新终 端接入信道的需求,方便新终端可以顺利接入信道,所以在保证系统传输效率的同时, 还能够很好地为待接入信道的终端提供及时调度。
本发明实施例提供的信道接入控制方法可以用于所有基于竞争方式获取信道使 用权的无线通信系统,例如: LTE系统、 WiMAX, WiFi以及 WLAN (Wireless Local Area Networks, 无线局域网络)等无线通信系统中, 尤其是基于 0FDMA传输方式的无线通 信系统。
为了使本技术领域的人员更好地理解本发明中的技术方案,下面将结合本发明实 施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述 的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当 属于本发明保护的范围。 图 1为本发明一示例性实施例提供的一种信道接入控制装置的结构示意图。该装 置应用于接入点设备中, 如图 1所示, 该装置包括: 竞争窗口分配单元 11、 窗口指 示生成单元 12、窗口指示发送单元 13、终端信息接收单元 14、 目标资源分配单元 15、 资源指示生成单元 16和资源指示发送单元 17。
竞争窗口分配单元 11 用于为终端分配在上行传输阶段用于接入信道的竞争窗 曰。
接入点设备在正常的调度传输过程中,可以在上行传输阶段的时间维度和频率维 度上设置一个二维的竞争窗口,用于方便当前未参与调度传输的终端能够发起自由竞 争接入信道,这里未参与调度传输的终端可以是指: 进入到接入点设备覆盖范围内的 新用户。 在分配竞争窗口时, 接入点设备可以按照设定的时间间隔, 连续分配, 并且 相邻两次分配之间的时间间隔可以相同, 也可以不相同, 另外, 接入点设备还可以受 其它设备的控制进行一次或多次分配。
窗口指示生成单元 12用于生成窗口指示。 窗口指示用于指示上述分配的竞争窗 口的位置。
窗口指示发送单元 13用于将所述窗口指示向终端发送。
接入点设备在分配完成竞争窗口后,通过生成窗口指示, 并将窗口指示在下行传 输阶段中向终端发送,以实现在终端可以通过下行传输阶段,了解到竞争窗口的位置, 便于终端在竞争窗口内发起信道接入竞争。
终端信息接收单元 14用于接收所述终端根据所述窗口指示在上行传输阶段的竞 争窗口内发送的终端信息。
终端在接收到窗口指示后,可以根据自身接入信道需求在竞争窗口内发送该终端 的终端信息,这里终端信息是指用于识别出终端的信息,可以为终端自身的终端标识, 例如: 终端的 AID (Associated Identity, 关联身份标识)或者 MAC ID (Media Access Control Identity, 介质访问控制层身份标识), 也可以为终端生成的一个随机数或 终端根据自身的终端标识按照预先设定的编码方式进行编码得到的终端代码。
当终端信息接收单元 14接收到终端信息后, 接入点设备可以确定发起竞争的终 端数量以及能够将这些发起竞争的终端区分开来。
目标资源分配单元 15用于为所述终端分配目标资源。
这里目标资源可以是指分配给终端用于传输数据的数据资源,即终端可以根据分 配的数据资源直接进行数据传输,例如:接收下行传输阶段中数据资源中的数据,或, 在上行传输阶段中的数据资源上发送数据。另外, 目标资源还可以是指发送给终端用 于进行后续分配数据资源的请求资源,即终端可以在分配的目标资源上发送资源请求 信息, 然后接入点设备根据该资源请求信息再为终端分配用于传输数据的数据资源, 然后在分配的数据资源中进行传输数据。无论哪种方式, 通过上述设置, 终端都可以 顺利接入到信道中, 并进行数据传输。
资源指示生成单元 16用于根据所述目标资源生成资源指示, 资源指示用于指示 目标资源位于上行传输阶段或下行传输阶段中的位置。
资源指示发送单元 17用于向所述终端发送所述资源指示。
接入点设备可以在下行传输阶段中将该资源指示发送, 以便于发起竞争的终端 (即在竞争窗口内发送终端信息的终端) 可以获知到所分配的目标资源的位置。
由以上技术方案可见,该装置通过为终端分配在上行传输阶段中用于接入信道的 竞争窗口, 即为待接入信道的终端提供信道接入机会,然后可以在竞争窗口内接收待 接入的终端发送的用于接入信道的终端信息,再根据接收到的终端信息可以为终端分 配用于接收数据或发送数据的资源,最后将用于指示分配给终端的资源的位置的资源 指示发送给终端。
当终端接收到资源指示后,可以根据所分配的资源进行数据发送或数据接收, 从 而实现终端可以顺利接入到信道中。该装置在已有用户占用信道收发数据的同时,利 用竞争窗口的方式获取到待接入信道的终端的接入需求, 方便待接入信道的终端可 以、 快速、 顺利地接入到信道中, 与现有技术相比, 该装置可以在保证系统传输效率 的同时, 还能够很好地为待接入信道的终端提供及时调度。
在本发明一示例性实施例中, 如图 2所示, 竞争窗口分配单元 11可以包括: 时 间维度信息确定单元 111、 频率维度信息确定单元 112和竞争窗口确定单元 113。
时间维度信息确定单元 111用于确定上行传输阶段中的时间维度信息。
时间维度信息至少包括: 时间维度上的起始时间 TO和时间维度上延续的时间长 度 ΔΤ, 即竞争窗口在时间维度上的位置位于 TO 〜Τ0 + ΔΤ。
频率维度信息确定单元 112用于确定上行传输阶段中的频率维度信息。
频率维度信息至少包括:频率维度上的起始频率 f 0 和频率维度上延续的频率宽 度 , 即竞争窗口在频率维度上的位置位于 f 0 〜 f O + A f 。
竞争窗口确定单元 113用于根据所述时间维度信息和频率维度信息,确定所述竞 争窗口在上行传输阶段中的位置。
另外, 在本发明其它实施例中, 若当前没有用户占用信道, 那么竞争窗口分配单 元 11还可以只包括时间维度信息确定单元 111和竞争窗口确定单元 113, 即竞争窗 口确定单元 113可以不考虑频率维度,而只将时间维度信息构成的资源窗口确定为分 配给终端的竞争窗口,最终将与时间维度信息对应的时间窗口的所有频率带宽都作为 竞争窗口。
本领域技术人员应该知道,通过上面的方式确定竞争窗口的位置只是本发明的一 种实现方式, 在本发明其它实施例中, 还可以采用其它方式来确定竞争窗口的位置, 例如:竞争窗口的时间维度信息可以为本帧发送完成后的第 a微秒到第 b微秒,其中, b大于 a, 频率维度信息可以为本帧发送完成后的第 m个导频符号开始, 持续到第 n 个导频符号结束, 其中 n大于 m, 等等。 另外, 在频率维度上, 可以是以 Hz (赫兹) 为直接指示的单位, 也可以是以频带好为力度单位,还可以是以子载波编号为体现方 式等等。即只要是本领域技术人员所知道的能够确定竞争窗口位置的方式, 都属于本 发明的保护范围。
在本发明另一示例性实施例中, 竞争窗口分配单元 11还可以包括: 竞争确定单 元,用于在所述竞争窗口内频率维度上确定竞争单位的宽度和竞争采用的预设调制方 式以及预设编码方式。
本发明示例性实施例中,在分配竞争窗口时, 除了指示时间维度和频率维度的二 维宽度外,还可以进一步指示每个竞争单位的宽度,比如每个竞争单位为 κ个子载波, 并规定竞争所采用的调制方式、编码方式中的一种或两种组合。 由于调制方式和编码 方式可以决定每个子载波的频谱效率 n, 因此每个竞争单位可以携带的比特数是 κ η , 即此次的竞争窗口内的资源全部分配后一共可以区分 2Κ η个用户。 另一方面, 接入点设备可以提供的资源块个数是由时频资源总数(持续时间 *频域宽度) /竞争单 位得到的, 所以这个值表示此次接入点设备愿意接入的最大数目的新用户数量。
为了增加终端接入信道的公平性,还可以让终端进行自由竞争,在本发明另一示 例性实施例中, 竞争窗口分配单元 11还可以包括: 编号分配单元, 用于对所述竞争 窗口内的资源块进行编号, 所述窗口指示包括所述编号。
接入点设备可以对竞争窗口内的每个资源块都可以有编号, 比如从 0到 Ν, 这里 N+1即使接入点设备可以提供的资源块总个数。进而终端在进行信道竞争时就可以在
[0, 2Κ η -1]的范围内随机生成一个数值, 并在竞争窗口内随机选择一个资源块后, 发送该数值, 这里终端随机生成的数值可以唯一确定该终端。
当采用自由竞争的方式对终端提供信道接入时, 如图 3所示, 终端信息接收单元 14可以包括: 第一接收子单元 141、 随机数判断单元 142和第一终端信息确定单元 143。
第一接收子单元 141 用于接收所述终端根据所述窗口指示在所述竞争窗口内发 送的随机数。
随机数判断单元 142用于当在所述竞争窗口内接收到所述随机数时,判断所述随 机数在所述竞争窗口内占用的资源块是否为一个。
在终端自由竞争时, 会出现一种冲突, 具体为: 参与竞争的两个或两个以上的终 端选择了同一个资源块来发送随机数,这种情况下,接入点设备将无法从该资源块中 正确解调出随机数,所以通过判断能够提取到随机数, 就可以判断出是否存在多个终 端选择同一资源块来发送随机数, 对于这种情况, 由于无法确定参与竞争的终端, 所 以接入点设备通常不做处理, 即不再为这种出现冲突的终端分配后续的资源。
在终端自由竞争时, 还会出现另一种冲突, 具体为: 参与竞争的两个或两个以上 的终端生成了同一随机数, 并且分别选择了不同的资源块来发送该随机数。对于这种 情况, 虽然接入点设备可以在不同的资源块上都能解调出正确的数值,但由于不同资 源块上解调的数值相同,所以无法唯一地确定参与竞争的终端, 同样接入点设备通常 不做处理, 即不再为这种出现冲突的终端分配后续的资源。
第一终端信息确定单元 143用于当所述随机数占用的资源块为一个时,将所述随 机数作为所述终端信息。 为了避免出现自由竞争中出现的两种冲突,在本发明另一个示例性实施例中, 如 图 4所示, 终端信息接收单元 14可以包括: 第二接收子单元 144和第二终端信息确 定单元 145。
第二接收子单元 144 用于收所述终端根据所述窗口指示在所述竞争窗口内发送 的终端代码或竞争短帧。
所述终端代码采用预设编码方式生成,所述预设编码方式包括: 正交编码方式或 随机编码方式。
由于不再使用随机数作为终端竞争的标识,而是采用预设编码方式来生成作为标 识的代码, 这里预设编码方式可以为 CDMA (Code Division Multiple Access, 码分 多址的英文缩写)正交编码方式。采用编码方式生成代码, 这样可以使得终端和终端 的代码之间具有正交 /准正交的关系, 并且由于具有正交 /准正交的优点, 因此, 即使 两个或者两个以上的终端同时占有相同的竞争资源块,只要这两个或者两个以上的终 端没有使用相同的码字, 就不会造成竞争冲突。
虽然采用编码的方式在一定程度上降低了冲突的概率, 但为了支持正交的码字, 所需要的竞争资源块更大,因此总的来说在具体应用中采用哪一种方案是根据具体情 况才能决定。
另外, 当确定竞争窗口的时间维度信息后, 还可以在频率维度上确定以 20MHz 为单位作为竞争窗口的频率维度信息,以便于终端可以以 20MHz为单位向接入站点发 送竞争短帧以申请传输信道的接入。具体来说,接入点设备在下行传输阶段告知终端 预留的竞争窗口的周期时间 TO〜! Ό+ Δ Τ以及竞争单位时间 Tu, 即可以使得各竞争单 位时间在所有 20MHz的单位信道上都是时间同步的。在竞争短帧内至少包括: 终端标 识。
一种可行的竞争短帧是 NDP (Null Data Packet,空数据包)帧。 NDP帧包含 L-STF (Legacy Short Training Field, 传统短训练域) , L-LTF (Legacy Long Training Field, 传统长训练域), L-SIG (Legacy Signaling, 传统信令)和新 SIG (新信令)。 在所述新信令中, 就可以包含终端的终端标识。
第二终端信息确定单元 145用于将所述终端代码作为所述终端信息, 或,将所述 终端标识作为所述终端信息。
另外, 在竞争短帧中还可以包含有终端发送的资源请求信息, 比如, 发送带宽, 发送信号的空时流等信息。当竞争短帧中携带了这些资源请求信息后,在本发明示例 性实施例中, 如图 5所示, 目标资源分配单元 15可以包括: 第一资源请求信息提取 单元 151和第一资源分配子单元 152。
第一资源请求信息提取单元 151 用于从所述竞争短帧内提取与所述终端标识相 对应的资源请求信息。
第一资源分配子单元 152 用于根据所述资源请求信息为所述终端分配用于传输 数据的数据资源, 并将所述数据资源作为目标资源。
即接入点设备根据竞争短帧中携带的资源请求信息,直接为终端分配在下行传输 阶段中用于接收数据或在上行传输阶段中发送数据的数据资源,进而实现终端顺利接 入信道。
而对于采用随机数或终端代码进行竞争的情况,接入点设备无法直接从随机数或 终端代码中直接获取到资源请求信息消息,所以还需要与终端进行再次信令交互才能 获知终端的资源请求信息。 如图 6所示, 目标资源分配单元 15可以包括: 请求资源 分配单元 153、 请求指示生成单元 154、 第二资源请求信息提取单元 155和第二资源 分配子单元 156。
请求资源分配单元 153 用于根据所述终端信息为所述终端分配用于发送资源请 求信息的请求资源。
请求指示生成单元 154用于生成请求指示并将所述请求指示向所述终端发送,所 述请求指示用于指示所述请求资源在上行传输阶段中的位置。
请求资源位于上行传输阶段中,终端可以根据请求指示在上行传输阶段的请求资 源中向接入点设备发送资源请求信息。
第二资源请求信息提取单元 155 用于从所述请求资源内提取所述终端根据所述 请求指示发送的资源请求信息。
第二资源分配子单元 156 用于据所述资源请求信息为所述终端分配用于传输数 据的数据资源, 并将所述数据资源作为目标资源。
图 7为本发明一示例性实施例提供的一种信道接入控制装置的结构示意图。与图 1所示信道接入控制装置相对应, 本发明还提供了一种信道接入控制装置, 应用于终 端, 如图 7所示, 该装置包括: 窗口指示接收单元 21、 终端信息发送单元 22和资源 指示接收单元 23。
窗口指示接收单元 21用于接收接入点设备发送的窗口指示, 所述窗口指示用于 指示终端在上行传输阶段用于信道接入的竞争窗口的位置。
终端信息发送单元 22用于根据所述窗口指示在上行传输阶段中的竞争窗口内向 所述接入点设备发送所述终端的终端信息。 资源指示接收单元 23用于接收所述接入点设备根据所述终端信息返回的资源指 示, 所述资源指示用于指示所述接入点设备分配给所述终端的目标资源的位置。
在本发明一示例性实施例中, 如图 8所示, 终端信息发送单元 22可以包括: 随 机数生成单元 211、 第一资源块选择单元 212和随机数发送单元 213。
随机数生成单元 211用于根据所述窗口指示生成一个随机数,并将所述随机数作 为所述终端信息。
在窗口指示内除了有竞争窗口的位置外,还可以有竞争窗口内资源块的编号, 随 机数生成单元 211根据资源块的编号就可以确定随机数的范围,进而在该随机数范围 内可以生成一个随机数。
第一资源块选择单元 212用于在所述竞争窗口内随机选择一个资源块。
随机数发送单元 213用于在所选资源块中向所述接入点设备发送所述随机数。 当两个或两个以上参与竞争的终端生成同一个随机数, 并且在不同资源块内发 送, 或, 当两个或两个以上参与竞争的终端生成不同的随机数, 但在同一个资源块内 发送,那么就会出现竞争冲突, 详细请参见上述用于接入点设备的信道接入控制装置 中的描述, 在此不再赘述。
在本发明一示例性实施例中, 如图 9所示, 终端信息发送单元 22可以包括: 编 码方式提取单元 224、 编码单元 225、 第二资源块选择单元 226和终端代码发送单元 227。
编码方式提取单元 224用于从所述窗口指示中提取目标编码方式,所述目标编码 方式包括: 正交编码方式和随机编码方式。
编码单元 225 用于利用所述目标编码方式对所述终端的终端标识进行编码得到 终端代码, 并将所述终端代码作为所述终端信息。
第二资源块选择单元 226用于在所述竞争窗口内随机选择一个资源块。
终端代码发送单元 227 用于在所选资源块中向所述接入点设备发送所述终端代 码。
采用编码方式生成代码, 这样可以使得终端和终端的代码之间具有正交 /准正交 的关系, 并且由于具有正交 /准正交的优点, 因此, 即使两个或者两个以上的终端同 时占有相同的竞争资源块, 只要这两个或者两个以上的终端没有使用相同的码字, 就 不会造成竞争冲突。
在本发明一示例性实施例中, 如图 10所示, 终端信息发送单元 22可以包括: 竞 争短帧生成单元 228和竞争短帧发送单元 229。 竞争短帧生成单元 228用于于根据所述窗口指示生成竞争短帧,所述竞争短帧内 包括终端标识, 并将所述终端标识作为所述终端信息。
当以时间维度上的起始时间 TO和竞争窗口在时间维度上延续的时间长度 ΔΤ作 为竞争窗口的时间维度信息,并且在频率维度上确定以 20MHz为单位作为竞争窗口的 频率维度信息, 那么终端就可以在竞争窗口内发送竞争短帧。
一种可行的竞争短帧是 NDP (Null Data Packet,空数据包)帧。 NDP帧包含 L-STF (Legacy Short Training Field, 传统短训练域) , L-LTF (Legacy Long Training Field, 传统长训练域), L-SIG (Legacy Signaling, 传统信令)和新 SIG (新信令)。 在所述新信令中, 就可以包含终端的终端标识。
竞争短帧发送单元 229 用于在所述竞争窗口中向所述接入点设备发送所述竞争 短帧。
另外, 在竞争短帧中还可以包含有终端发送的资源请求信息, 比如, 发送带宽, 发送信号的空时流等信息。当竞争短帧中携带了这些资源请求信息后,在本发明示例 性实施例中, 资源指示接收单元 23可以包括: 第一数据资源指示接收子单元。
第一资源指示接收子单元,用于接收所述接入点设备根据所述资源请求信息返回 的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息分配给所 述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
而对于采用随机数或终端代码进行竞争的情况,由于接入点设备无法直接从随机 数或终端代码中直接获取到资源请求信息消息,所以还需要与终端进行再次信令交互 才能获知终端的资源请求信息。 如图 11所示, 资源指示接收单元 23包括: 请求指示 接收单元 231、 资源请求信息生成单元 232、 资源请求发送单元 233和第二数据资源 指示接收子单元 234。
请求指示接收单元 231 用于接收所述接入点设备根据所述终端信息返回的请求 指示,所述请求指示用于指示所述接入点设备分配给所述终端用于发送资源请求信息 的请求资源的位置。
资源请求信息生成单元 232用于根据所述请求指示生成资源请求信息。
资源请求发送单元 233, 用于在所述请求资源内向所述接入点设备发送所述资源 请求信息;
第二数据资源指示接收子单元 234 用于接收所述接入点设备根据所述资源请求 信息返回的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息 分配给所述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。 为了描述的方便, 描述以上装置时以功能分为各种单元分别描述。 当然, 在实施 本发明时可以把各单元的功能在同一个或多个软件和 /或硬件中实现。
本说明书中的各个实施例均采用递进的方式描述,各个实施例之间相同相似的部 分互相参见即可, 每个实施例重点说明的都是与其他实施例的不同之处。尤其, 对于 装置或系统实施例而言, 由于其基本相似于方法实施例, 所以描述得比较简单, 相关 之处参见方法实施例的部分说明即可。以上所描述的装置及系统实施例仅仅是示意性 的,其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单 元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分 布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实 施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下, 即可以理解并 实施。
本发明示例性实施例还提供了一种信道接入控制方法,该方法应用于接入点设备 中, 如图 12所示, 该方法可以包括以下步骤:
S110: 为终端分配在上行传输阶段用于接入信道的竞争窗口。
接入点设备在正常的调度传输过程中,可以在上行传输阶段的时间维度和频率维 度上设置一个二维的竞争窗口,用于方便当前未参与调度传输的终端能够发起自由竞 争接入信道,这里未参与调度传输的终端可以是指: 进入到接入点设备覆盖范围内的 新用户。 在分配竞争窗口时, 接入点设备可以按照设定的时间间隔, 连续分配, 并且 相邻两次分配之间的时间间隔可以相同, 也可以不相同, 另外, 接入点设备还可以受 其它设备的控制进行一次或多次分配。
S120: 根据所述竞争窗口生成窗口指示并向所述终端发送所述窗口指示。
所述窗口指示用于指示所述竞争窗口在上行传输阶段中的位置。
接入点设备在分配完成竞争窗口后,通过生成窗口指示, 并将窗口指示在下行传 输阶段中发送, 以实现在终端可以通过下行数据传输阶段, 了解到竞争窗口的位置, 便于终端在竞争窗口内发起信道接入竞争。
S130:接收所述终端根据所述窗口指示在上行传输阶段的竞争窗口内发送的终端 信息。
终端在接收到窗口指示后,可以根据自身接入信道需求在竞争窗口内发送该终端 的终端信息,这里终端信息是指用于识别出终端的信息,可以为终端自身的终端标识, 例如: 终端的 AID (Associated Identity, 关联身份标识)或者 MAC ID (Media Access Control Identity, 介质访问控制层身份标识), 也可以为终端生成的一个随机数或 终端根据自身的终端标识按照预先设定的编码方式进行编码得到的终端代码。
通过从竞争窗口内中接收到的终端信息,接入点设备可以确定发起竞争的终端数 量以及能够将这些发起竞争的终端区分开来。
S140: 根据所述终端信息为所述终端分配目标资源。
这里目标资源可以是指分配给终端用于传输数据的数据资源,即终端可以根据分 配的数据资源直接进行数据传输,例如:接收下行传输阶段中数据资源中的数据,或, 在传输阶段中的数据资源上发送数据。另外, 目标资源还可以是指发送给终端用于进 行后续分配数据资源的请求资源, 即终端可以在分配的目标资源上发送资源请求信 息,然后接入点设备根据该资源请求信息再为终端分配用于传输数据的数据资源,然 后在分配的数据资源中进行传输数据。
无论哪种方式, 通过上述设置, 终端都可以顺利接入到信道中进行数据传输。
S150: 根据所述目标资源生成资源指示并向所述终端发送所述资源指示。
所述资源指示用于指示所述目标资源的位置。
接入点设备可以在下行传输阶段中将该资源指示发送, 以便于发起竞争的终端 (即在竞争窗口内发送终端信息的终端) 可以获知到所分配的目标资源的位置。
由以上技术方案可见,该方法通过为终端分配在上行传输阶段中用于接入信道的 竞争窗口, 即为待接入信道的终端提供信道接入机会,然后可以在竞争窗口内接收待 接入的终端发送的用于接入信道的终端信息,再根据接收到的终端信息可以为终端分 配用于接收数据或发送数据的资源,最后将用于指示分配给终端的资源的位置的资源 指示发送给终端。
当终端接收到资源指示后,可以根据所分配的资源进行数据发送或数据接收, 从 而实现终端可以顺利接入到信道中。该方法在已有用户占用信道收发数据的同时,利 用竞争窗口的方式获取到待接入信道的终端的接入需求, 方便待接入信道的终端可 以、 快速、 顺利地接入到信道中, 与现有技术相比, 该方法可以在保证系统传输效率 的同时, 还能够很好地为待接入信道的终端提供及时调度。
在本发明一示例性实施例中, 上述步骤 S110可以包括以下步骤:
al l : 确定上行传输阶段中的时间维度信息, 所述时间维度信息至少包括时间维 度上的起始时间和时间长度。
al2: 确定上行传输阶段中的频率维度信息, 所述频率维度信息至少包括频率维 度上的起始频率和频率宽度。
al3: 将所述时间维度信息和所述频率维度信息构成的资源窗口确定为分配给所 述终端的竞争窗口。
另外, 在本发明其它实施例中, 若当前没有用户占用信道, 那么上述步骤 S110 还可以只包括步骤 al l和步骤 al3, 即不考虑频率维度, 而只将时间维度信息构成的 资源窗口确定为分配给终端的竞争窗口,最终将与时间维度信息对应的时间窗口的所 有频率带宽都作为竞争窗口。
关于竞争窗口的详细信息, 可以参见上述关于竞争窗口分配单元 11的描述, 在 此不再赘述。
在本发明一示例性实施例中, 上述步骤 S130可以包括:
bl l : 接收所述终端根据所述窗口指示在所述竞争窗口内发送的终端代码或竞争 短帧, 将所述终端代码作为所述终端信息, 所述终端代码采用预设编码方式生成, 所 述预设编码方式包括正交编码方式; 所述竞争短帧内包括终端标识,将所述终端标识 作为所述终端信息。
bl2: 将所述终端代码作为所述终端信息, 或, 将所述终端标识作为所述终端信 息。
在本发明一示例性实施例中, 上述步骤 S130可以包括:
b21 : 接收所述终端根据所述窗口指示在所述竞争窗口内发送的随机数; b22: 当在所述竞争窗口内接收到所述随机数时, 判断所述随机数在所述竞争窗 口内占用的资源块是否为一个;
b23: 当所述随机数占用的资源块为一个时, 将所述随机数作为所述终端信息。 当未在所述竞争窗口内接收到所述随机数时,则接入点设备无法确定参与竞争的 终端, 结束流程。 即接入点设备不再为出现冲突的终端分配后续的资源。 而当所述随 机数占用的资源块超过两个或两个以上时,则接入点设备无法唯一地确定参与竞争的 终端, 结束流程。
在本发明一示例性实施例中, 当所述竞争短帧内还包括资源请求信息时, 上述步 骤 140可以包括:
cl l , 从所述竞争短帧内提取与所述终端标识相对应的资源请求信息。
cl2, 根据所述资源请求信息为所述终端分配用于传输数据的数据资源, 并将所 述数据资源作为目标资源。
在本发明一示例性实施例中, 当所述终端信息为随机数或终端代码时, 上述步骤 140可以包括:
c21, 根据所述终端信息为所述终端分配用于发送资源请求信息的请求资源。 c22, 根据所述请求资源生成请求指示并将所述请求指示向所述终端发送, 所述 请求指示用于指示所述请求资源的位置,。
c23, 从所述请求资源内提取所述终端根据所述请求指示发送的资源请求信息。 c24, 根据所述资源请求信息为所述终端分配用于传输数据的数据资源, 并将所 述数据资源作为目标资源。
本发明示例性实施例还提供了一种信道接入控制方法,该方法应用于参与竞争的 终端设备中, 如图 13所示, 该方法可以包括以下步骤:
S210: 接收接入点设备发送的窗口指示。
所述窗口指示用于指示终端在上行传输阶段用于接入信道的竞争窗口的位置。
S220:根据所述窗口指示在所述竞争窗口内向所述接入点设备发送所述终端的终 端信息。
在本发明一示例性实施例中, 步骤 S220可以包括:
dl l : 根据所述窗口指示生成一个随机数, 将所述随机数作为所述终端信息; (112: 在所述竞争窗口内随机选择一个资源块;
dl3: 在所选资源块中向所述接入点设备发送所述随机数。
在本发明一示例性实施例中, 步骤 S220可以包括:
d21 : 从所述窗口指示中提取目标编码方式, 所述目标编码方式包括: 正交编码 方式;
d22: 利用所述目标编码方式对所述终端的终端标识进行编码, 得到终端代码, 将所述终端代码作为所述终端信息;
d23: 在所述竞争窗口内随机选择一个资源块;
d24: 在所选资源块中向所述接入点设备发送所述终端代码。
在本发明一示例性实施例中, 步骤 S220可以包括:
d31 : 根据所述窗口指示生成竞争短帧, 所述竞争短帧内包括终端标识, 将所述 终端标识作为所述终端信息;
d32: 在所述竞争窗口中向所述接入点设备发送所述竞争短帧。
S230: 接收所述接入点设备根据所述终端信息返回的资源指示。
所述资源指示用于指示所述接入点设备分配给所述终端的目标资源的位置。 在本发明一示例性实施例中, 当所述竞争短帧内还包括资源请求信息时, 步骤 S220可以包括:
el l : 接收所述接入点设备根据所述资源请求信息返回的资源指示。 所述资源指示用于指示所述接入点设备根据所述资源请求信息分配给所述终端 的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
在本发明一示例性实施例中, 当终端信息为随机数或终端代码时, 步骤 S220可 以包括:
e21 : 接接收所述接入点设备根据所述终端信息返回的请求指示。
所述请求指示用于指示所述接入点设备分配给所述终端用于发送资源请求信息 的请求资源的位置;
e22 : 根据所述请求指示生成资源请求信息;
e23 : 在所述请求资源内向所述接入点设备发送所述资源请求信息;
e24: 接收所述接入点设备根据所述资源请求信息返回的资源指示。
所述资源指示用于指示所述接入点设备根据所述资源请求信息分配给所述终端 的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
下面结合具体应用场景,对本发明实施例提供的信道接入控制方法进行说明, 参 见图 14, 本发明一示例性实施例提供的信道接入控制方法的信令图, 该方法可以包 括以下步骤:
S301 : 接入点设备为终端分配在上行传输阶段用于接入信道的竞争窗口。
S302 : 接入点设备根据竞争窗口生成窗口指示并向终端发送窗口指示。
S303 : 终端接收接入点设备发送的窗口指示。
S304: 根据窗口指示在竞争窗口内向接入点设备发送终端的终端信息。
S305 :接入点设备接收终端根据窗口指示在上行传输阶段的竞争窗口内发送的终 端信息。
S306 : 接入点设备根据终端信息为终端分配目标资源。
S307 : 接入点设备根据目标资源生成资源指示并向终端发送。
S308 : 终端接收接入点设备根据终端信息返回的资源指示。
S309 : 终端在资源指示指示的目标资源的位置上传输数据。
另外, 为了提高终端竞争的公平性, 参见图 15, 本发明一示例性实施例提供的 信道接入控制方法的信令图, 该方法可以包括以下步骤:
S401 : 接入点设备为终端分配在上行传输阶段用于接入信道的竞争窗口。
S402 : 接入点设备根据竞争窗口生成窗口指示并向终端发送窗口指示。
窗口指示用于指示竞争窗口的位置, 并且窗口指示内还包括: 竞争窗口内资源块 的编号或预设编码方式。 S403 : 终端接收窗口指示, 并根据窗口指示生成随机数或终端代码。
S404: 终端根据窗口指示在上行传输阶段中竞争窗口内发送随机数或终端代码。 S405 :接入点设备接收终端根据窗口指示在上行传输阶段的竞争窗口内发送的随 机数或终端代码。
S406 : 接入点设备判断是否在竞争窗口内资源中接收到随机数。
S407 : 当在竞争窗口内资源中接收到随机数时,接入点设备判断随机数占用的资 源块是否为一个。
S408 : 当随机数占用的资源块为一个时, 接入点设备将随机数作为终端信息。 S409 :接入点设备根据随机数或终端代码为终端分配用于发送资源请求信息的请 求资源。
S410 : 接入点设备生成请求指示并向终端发送请求指示。
请求指示用于指示请求资源的位置。
S411 : 终端接收接入点设备发送的请求指示。
S412 : 终端生成资源请求信息并在上行传输阶段中发送资源请求信息。
S413 : 接入点设备根据资源请求信息为终端分配用于传输数据的数据资源。
S414: 接入点设备生成数据资源指示并向终端发送。
数据资源指示用于指示数据资源的位置。
S415 : 终端接收接入点设备发送的数据资源指示。
S416 : 终端根据数据资源指示在上行传输阶段中的数据资源中上传数据。
或者, 在 S413之后, 进行 S417 : 接入点设备直接在下行传输阶段中的数据资源 中发送数据给该终端。
此外, 当确定竞争窗口的时间维度信息后, 还可以在频率维度上确定以 20MHz 为单位作为竞争窗口的频率维度信息,以便于终端可以以 20MHz为单位向接入站点发 送竞争短帧以申请传输信道的接入, 参见图 16, 本发明一示例性实施例提供的信道 接入控制方法的信令图, 该方法可以包括以下步骤:
S501 : 接入点设备为终端分配在上行传输阶段用于接入信道的竞争窗口。
竞争窗口具有一定的时间维度信息,并且频率维度上确定以 20MHz为单位作为竞 争窗口的频率维度信息。
S502 : 接入点设备根据竞争窗口生成窗口指示并向终端发送。
S503 : 终端接收接入点设备发送的窗口指示, 并根据窗口指示生成竞争短帧。
S504:终端在上行传输阶段中的竞争窗口内发送竞争短帧,竞争短帧内至少包括: 终端标识。
S505 : 接入点设备接收竞争短帧内, 并从竞争短帧内提取终端标识。
S506 :接入点设备根据终端标识为对应的终端分配用于发送资源请求信息的请求 资源。
S507 : 接入点设备生成请求指示并在下行传输阶段中发送请求指示,请求指示用 于指示请求资源的位置。
S508 : 终端从下行传输阶段中获取请求指示。
S509 : 终端生成资源请求信息并在上行传输阶段的请求资源内发送资源请求信 息。
S510 : 接入点设备根据资源请求信息为终端分配用于传输数据的数据资源。
S511 : 接入点设备生成数据资源指示并在下行传输阶段中发送数据资源指示,数 据资源指示用于指示数据资源的位置。
S512 : 终端从下行传输阶段中获取数据资源指示。
S513 : 终端根据数据资源指示在上行传输阶段中的数据资源中上传数据。
或者, 在 S510之后, 进行 S514 : 接入点设备直接在下行传输阶段中的数据资源 中发送数据给该终端。
另外, 当竞争短帧内包含有资源请求信息时, 步骤 S504之后可以直接转入到步 骤 S511中。
通过以上的方法实施例的描述,所属领域的技术人员可以清楚地了解到本发明可 借助软件加必需的通用硬件平台的方式来实现, 当然也可以通过硬件,但很多情况下 前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技 术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存 储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或 者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介 质包括: 只读存储器(R0M)、 随机存取存储器(RAM)、 磁碟或者光盘等各种可以存储 程序代码的介质。
本发明实施例中还提供了一种接入点设备, 参见图 17所示, 该接入点设备包括: 发射机 1、 接收机 2和处理器 3, 其中:
发射机 1用于向终端发送信息, 接收机 2用于接收终端发送的信息;
处理器 3用于执行以下程序:
为终端分配在上行传输阶段用于接入信道的竞争窗口; 根据所述竞争窗口生成窗口指示并向所述终端发送所述窗口指示,所述窗口指示 用于指示所述竞争窗口的位置;
接收所述终端根据所述窗口指示在上行传输阶段的竞争窗口内发送的终端信息; 根据所述终端信息为所述终端分配目标资源;
根据所述目标资源生成资源指示并向所述终端发送所述资源指示,所述资源指示 用于指示所述目标资源的位置。
可选地, 在本发明示例性实施例中, 处理器 3还可以执行上述图 11所示方法实 施例中信道接入控制方法所对应的所有程序。
本发明实施例中还提供了一种终端, 参见图 18所示, 该终端包括: 发射机 1、 接收机 2和处理器 3, 其中:
发射机 1用于向接入点设备发送信息,接收机 2用于接收接入点设备在发送的信 息;
处理器 3用于执行以下程序:
接收接入点设备发送的窗口指示,所述窗口指示用于指示终端在上行传输阶段用 于接入信道的竞争窗口的位置;
根据所述窗口指示在所述竞争窗口内向所述接入点设备发送所述终端的终端信 息;
接收所述接入点设备根据所述终端信息返回的资源指示,所述资源指示用于指示 所述接入点设备分配给所述终端的目标资源的位置。
可选地, 在本发明示例性实施例中, 处理器 3还可以执行上述图 12所示实施例 中信道接入控制方法所对应的所有程序。
需要说明的是, 在本文中, 诸如 "第一 "和 "第二"等之类的关系术语仅仅用来 将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体 或操作之间存在任何这种实际的关系或者顺序。 而且, 术语 "包括" 、 "包含"或者 其任何其他变体意在涵盖非排他性的包含, 从而使得包括一系列要素的过程、 方法、 物品或者设备不仅包括那些要素, 而且还包括没有明确列出的其他要素, 或者是还包 括为这种过程、 方法、 物品或者设备所固有的要素。 在没有更多限制的情况下, 由语 句 "包括一个…… " 限定的要素, 并不排除在包括所述要素的过程、 方法、物品或者 设备中还存在另外的相同要素。
本发明实施例提供的方法及装置通过为终端分配在上行传输阶段中用于接入信 道的竞争窗口, 即为待接入信道的终端提供信道接入机会,然后可以在竞争窗口内接 收待接入的终端发送的用于接入信道的终端信息,再根据接收到的终端信息可以为终 端分配用于接收数据或发送数据的目标资源,最后将用于指示分配给终端的资源的位 置的资源指示发送给终端,以便于使终端能够根据所分配的资源进行数据发送或数据 接收, 实现终端顺利接入信道。 该方法及装置在已有用户占用信道收发数据的同时, 利用竞争窗口的方式获取到待接入信道的终端的接入需求,并为终端分配对应的目标 资源, 方便待接入信道的终端可以快速、 顺利地接入到信道中, 与现有技术相比, 该 方法及装置可以在保证系统传输效率的同时,还能够很好地为待接入信道的终端提供 及时调度。
以上所述仅是本发明的具体实施方式, 使本领域技术人员能够理解或实现本发 明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的,本文中所定 义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因 此,本发明将不会被限制于本文所示的这些实施例, 而是要符合与本文所公开的原理 和新颖特点相一致的最宽的范围。

Claims

权 利 要 求
1、 一种信道接入控制装置, 应用于接入点设备, 其特征在于, 所述装置包 括: 竞争窗口分配单元,用于为终端分配在上行传输阶段用于接入信道的竞争窗 Π ; 窗口指示生成单元, 用于根据所述竞争窗口生成窗口指示, 所述窗口指示用 于指示所述竞争窗口的位置; 窗口指示发送单元, 用于向所述终端发送所述窗口指示; 终端信息接收单元,用于接收所述终端根据所述窗口指示在上行传输阶段的 竞争窗口内发送的终端信息; 目标资源分配单元, 用于根据所述终端信息为所述终端分配目标资源; 资源指示生成单元, 用于根据所述目标资源生成资源指示, 所述资源指示用 于指示所述目标资源的位置; 资源指示发送单元, 用于向所述终端发送所述资源指示。
2、 根据权利要求 1所述的装置, 其特征在于, 所述竞争窗口分配单元包括: 时间维度信息确定单元, 用于确定上行传输阶段中的时间维度信息, 所述时 间维度信息至少包括时间维度上的起始时间和时间长度; 频率维度信息确定单元, 用于确定上行传输阶段中的频率维度信息, 所述频 率维度信息至少包括频率维度上的起始频率和频率宽度; 竞争窗口确定单元,用于将所述时间维度信息和所述频率维度信息构成的资 源窗口确定为分配给所述终端的竞争窗口。
3、 根据权利要求 1所述的装置, 其特征在于, 所述竞争窗口分配单元包括: 时间维度信息确定单元, 用于确定上行传输阶段中的时间维度信息, 所述时 间维度信息至少包括时间维度上的起始时间和时间长度; 竞争窗口确定单元,用于将所述时间维度信息构成的资源窗口确定为分配给 所述终端的竞争窗口。
4、 根据权利要求 2或 3所述的装置, 其特征在于, 所述竞争窗口分配单元 还包括: 编号分配单元, 用于对所述竞争窗口内的资源块进行编号, 所述窗口指示包 括所述编号; 和 /或, 竞争确定单元,用于在所述竞争窗口内频率维度上确定用于在所述竞争窗口 内发送竞争短帧的竞争单位的宽度和竞争采用的预设调制方式以及预设编码方 式。
5、 根据权利要求 1所述的装置, 其特征在于, 所述终端信息接收单元包括: 第一接收子单元,用于接收所述终端根据所述窗口指示在所述竞争窗口内发 送的随机数; 随机数判断单元, 用于当在所述竞争窗口内接收到所述随机数时, 判断所述随机数在所述竞争窗口内占用的资源块是否为一个;第一终端信息确定 单元, 用于当所述随机数占用的资源块为一个时, 将所述随机数作为所述终端信 息; 和 /或, 第二接收子单元,用于接收所述终端根据所述窗口指示在所述竞争窗口内发 送的终端代码或竞争短帧, 所述终端代码采用预设编码方式生成, 所述预设编码 方式包括正交编码方式,所述竞争短帧内包括终端标识;第二终端信息确定单元, 用于将所述终端代码作为所述终端信息,或,将所述终端标识作为所述终端信息。
6、 根据权利要求 5所述的装置, 其特征在于, 所述竞争短帧内还包括: 与 所述终端标识相对应的资源请求信息, 所述目标资源分配单元包括: 第一资源请求信息提取单元,用于从所述竞争短帧内提取与所述终端标识相 对应的资源请求信息; 第一资源分配子单元,用于根据所述资源请求信息为所述终端分配用于传输 数据的数据资源, 并将所述数据资源作为目标资源。
7、 根据权利要求 1-5任一项所述的装置, 其特征在于, 所述目标资源分配 单元包括: 请求资源分配单元,用于根据所述终端信息为所述终端分配用于发送资源请 求信息的请求资源; 请求指示生成单元,用于根据所述请求资源生成请求指示并将所述请求指示 向所述终端发送, 所述请求指示用于指示所述请求资源的位置; 第二资源请求信息提取单元,用于从所述请求资源内提取所述终端根据所述 请求指示发送的资源请求信息; 第二资源分配子单元,用于根据所述资源请求信息为所述终端分配用于传输 数据的数据资源, 并将所述数据资源作为目标资源。
8、 一种信道接入控制装置, 应用于终端, 其特征在于, 所述装置包括: 窗口指示接收单元, 用于接收接入点设备发送的窗口指示, 所述窗口指示用 于指示终端在上行传输阶段用于信道接入的竞争窗口的位置; 终端信息发送单元,用于根据所述窗口指示在上行传输阶段中的所述竞争窗 口内向所述接入点设备发送所述终端的终端信息; 资源指示接收单元,用于接收所述接入点设备根据所述终端信息返回的资源 指示, 所述资源指示用于指示所述接入点设备分配给所述终端的目标资源的位 置。
9、 根据权利要求 8所述的装置, 其特征在于, 所述终端信息发送单元包括: 随机数生成单元, 用于根据所述窗口指示生成一个随机数, 并将所述随机数 作为所述终端信息; 第一资源块选择单元, 用于在所述竞争窗口内随机选择一个 资源块; 随机数发送单元, 用于在所选资源块中向所述接入点设备发送所述随机 数;
或, 编码方式提取单元, 用于从所述窗口指示中提取目标编码方式, 所述目标编 码方式包括正交编码方式; 编码单元, 用于利用所述目标编码方式对所述终端的 终端标识进行编码得到终端代码, 并将所述终端代码作为所述终端信息; 第二资 源块选择单元,用于在所述竞争窗口内随机选择一个资源块;终端代码发送单元, 用于在所选资源块中向所述接入点设备发送所述终端代码; 或, 竞争短帧生成单元, 用于根据所述窗口指示生成竞争短帧, 所述竞争短帧内 包括终端标识, 并将所述终端标识作为所述终端信息; 竞争短帧发送单元, 用于 在所述竞争窗口中向所述接入点设备发送所述竞争短帧。
10、 根据权利要求 9所述的装置, 其特征在于, 所述竞争短帧内还包括: 与 所述终端标识相对应的资源请求信息, 所述资源指示接收单元包括: 第一资源指示接收子单元,用于接收所述接入点设备根据所述资源请求信息 返回的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息 分配给所述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
11、 根据权利要求 8或 9所述的装置, 其特征在于, 所述资源指示接收单元 包括: 请求指示接收单元,用于接收所述接入点设备根据所述终端信息返回的请求 指示,所述请求指示用于指示所述接入点设备分配给所述终端用于发送资源请求 信息的请求资源的位置; 资源请求信息生成单元, 用于根据所述请求指示生成资源请求信息; 资源请求发送单元,用于在所述请求资源内向所述接入点设备发送所述资源 请求信息; 第二资源指示接收子单元,用于接收所述接入点设备根据所述资源请求信息 返回的资源指示,所述资源指示用于指示所述接入点设备根据所述资源请求信息 分配给所述终端的目标资源的位置, 所述目标资源为用于传输数据的数据资源。
12、 一种信道接入控制方法, 应用于接入点设备, 其特征在于, 所述方法包 括: 为终端分配在上行传输阶段用于接入信道的竞争窗口; 根据所述竞争窗口生成窗口指示并向所述终端发送所述窗口指示,所述窗口 指示用于指示所述竞争窗口的位置; 接收所述终端根据所述窗口指示在上行传输阶段的竞争窗口内发送的终端 信息; 根据所述终端信息为所述终端分配目标资源; 根据所述目标资源生成资源指示并向所述终端发送所述资源指示,所述资源 指示用于指示所述目标资源的位置。
13、 根据权利要求 12所述的方法, 其特征在于, 所述为终端分配在上行传 输阶段用于接入信道的竞争窗口, 包括: 确定上行传输阶段中的时间维度信息,所述时间维度信息至少包括时间维度 上的起始时间和时间长度; 确定上行传输阶段中的频率维度信息,所述频率维度信息至少包括频率维度 上的起始频率和频率宽度; 将所述时间维度信息和所述频率维度信息构成的资源窗口确定为分配给所 述终端的竞争窗口。
14、 根据权利要求 12所述的方法, 其特征在于, 所述为终端分配在上行传 输阶段用于接入信道的竞争窗口, 包括: 确定上行传输阶段中的时间维度信息,所述时间维度信息至少包括时间维度 上的起始时间和时间长度; 将所述时间维度信息构成的资源窗口确定为分配给所述终端的竞争窗口。
15、 根据权利要求 12所述的方法, 其特征在于, 所述接收所述终端根据所 述窗口指示在所述竞争窗口内发送的终端信息, 包括: 接收所述终端根据所述窗口指示在所述竞争窗口内发送的终端代码或竞争 短帧, 所述终端代码采用预设编码方式生成, 所述预设编码方式包括正交编码方 式; 所述竞争短帧内包括终端标识, 将所述终端代码作为所述终端信息, 或, 将 所述终端标识作为所述终端信息; 或, 接收所述终端根据所述窗口指示在所述竞争窗口内发送的随机数,当在所述 竞争窗口内接收到所述随机数时,判断所述随机数在所述竞争窗口内占用的资源 块是否为一个, 当所述随机数占用的资源块为一个时, 将所述随机数作为所述终 端信息。
16、 根据权利要求 15所述的方法, 其特征在于, 所述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述根据所述终端信息为所述终端分配 目标资源, 包括: 从所述竞争短帧内提取与所述终端标识相对应的资源请求信息; 根据所述资源请求信息为所述终端分配用于传输数据的数据资源,并将所述 数据资源作为目标资源。
17、 根据权利要求 12-14任一项所述的方法, 其特征在于, 所述根据所述终 端信息为所述终端分配目标资源, 包括: 根据所述终端信息为所述终端分配用于发送资源请求信息的请求资源; 根据所述请求资源生成请求指示并将所述请求指示向所述终端发送,所述请 求指示用于指示所述请求资源的位置; 从所述请求资源内提取所述终端根据所述请求指示发送的资源请求信息; 根据所述资源请求信息为所述终端分配用于传输数据的数据资源,并将所述 数据资源作为目标资源。
18、 一种信道接入控制方法, 应用于终端, 其特征在于, 所述方法包括: 接收接入点设备发送的窗口指示,所述窗口指示用于指示终端在上行传输阶 段用于接入信道的竞争窗口的位置; 根据所述窗口指示在所述竞争窗口内向所述接入点设备发送所述终端的终 端信息; 接收所述接入点设备根据所述终端信息返回的资源指示,所述资源指示用于 指示所述接入点设备分配给所述终端的目标资源的位置。
19、 根据权利要求 18所述的方法, 其特征在于, 所述根据所述窗口指示在 上行传输阶段的竞争窗口内向所述接入点设备发送终端的终端信息, 包括: 根据所述窗口指示生成一个随机数, 将所述随机数作为所述终端信息, 在所 述竞争窗口内随机选择一个资源块,在所选资源块中向所述接入点设备发送所述 随机数; 或者, 从所述窗口指示中提取目标编码方式, 所述目标编码方式包括正交编码方 式, 利用所述目标编码方式对所述终端的终端标识进行编码得到终端代码, 将所 述终端代码作为所述终端信息, 在所述竞争窗口内随机选择一个资源块, 在所选 资源块中向所述接入点设备发送所述终端代码; 或, 根据所述窗口指示生成竞争短帧, 所述竞争短帧内包括终端标识, 将所述终 端标识作为所述终端信息,在所述竞争窗口中向所述接入点设备发送所述竞争短 帧。
20、 根据权利要求 19所述的方法, 其特征在于, 所述竞争短帧内还包括: 与所述终端标识相对应的资源请求信息,所述接收所述接入点设备根据所述终端 信息返回的资源指示, 包括: 接收所述接入点设备根据所述资源请求信息返回的资源指示,所述资源指示 用于指示所述接入点设备根据所述资源请求信息分配给所述终端的目标资源的 位置, 所述目标资源为用于传输数据的数据资源。
21、 根据权利要求 18或 19所述的方法, 其特征在于, 所述接收所述接入点 设备根据所述终端信息返回的资源指示, 包括: 接收所述接入点设备根据所述终端信息返回的请求指示,所述请求指示用于 指示所述接入点设备分配给所述终端用于发送资源请求信息的请求资源的位置; 根据所述请求指示生成资源请求信息; 在所述请求资源内向所述接入点设备发送所述资源请求信息; 接收所述接入点设备根据所述资源请求信息返回的资源指示,所述资源指示 用于指示所述接入点设备根据所述资源请求信息分配给所述终端的目标资源的 位置, 所述目标资源为用于传输数据的数据资源。
22、 一种接入点设备, 其特征在于, 包括上述权利要求 1-7任一项所述的信 道接入控制装置。
23、 一种终端, 其特征在于, 包括上述权利要求 8-11任一项所述的信道接 入控制装置。
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