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CN111148152A - Communication method and device - Google Patents

Communication method and device Download PDF

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Publication number
CN111148152A
CN111148152A CN201811300879.6A CN201811300879A CN111148152A CN 111148152 A CN111148152 A CN 111148152A CN 201811300879 A CN201811300879 A CN 201811300879A CN 111148152 A CN111148152 A CN 111148152A
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sequence
cyclic shift
shift information
wake
signal
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CN111148152B (en
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周涵
铁晓磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a communication method and equipment, wherein a wake-up signal is generated according to a ZC sequence, the wake-up signal is sent to terminal equipment through air interface resources, and the wake-up signal is used for indicating the terminal equipment to detect DCI (Downlink control information) sent to the terminal equipment at the continuous stage of a DRX (discontinuous reception) mode. Because the ZC sequence is an orthogonal sequence and the wake-up signal is generated according to the ZC sequence, the wake-up signals of a plurality of terminal devices can multiplex the same air interface resource, thereby reducing the air interface resource overhead of the network device.

Description

Communication method and device
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a communication method and equipment.
Background
Due to the New Radio (NR) needs to support larger transmission bandwidth, more transmit-receive antenna arrays, higher transmission rate, and more flexible and less-granular scheduling mechanism, the power consumption of the terminal device is increased. In case the network device is not scheduled, the terminal device will enter a Discontinuous Reception (DRX) mode in order to reduce the power consumption of the terminal device in the connected state. However, after the terminal device enters the DRX mode, in an on duration period (OnDuration), the terminal device still needs to continuously detect whether there is Downlink Control Information (DCI) sent by the network device to the terminal device, and since the DCI sent to the terminal device is not detected in most of the on duration period, the power consumption of the terminal device is still large. Therefore, in order to solve the above problem, in a case where the network device has DCI transmitted to the terminal device, the network device transmits a wake-up Signal to the terminal device through a Tracking Reference Signal (TRS), and in a case where the terminal device receives the TRS and the wake-up Signal is present in the TRS, the terminal device detects the DCI transmitted to the terminal device in the persistent phase. In order to realize tracking and adjusting of the delay offset by the terminal device, the transmission bandwidth of the TRS is large, a large amount of air interface time-frequency resources are required for transmitting the wake-up signal through the TRS, and since one terminal device needs to transmit one TRS, the network device is difficult to bear such a large amount of air interface resource overhead when a large amount of terminal devices configured with the wake-up signal exist in one cell.
Disclosure of Invention
The embodiment of the invention discloses a communication method and equipment, which are used for reducing air interface resource overhead of network equipment.
A first aspect discloses a communication method, in which a wake-up signal is generated according to a first ZC sequence, and the wake-up signal is sent to a terminal device through an air interface resource, where the wake-up signal may instruct the terminal device to detect DCI sent to the terminal device at a DRX mode persistent stage. Since the autocorrelation of the wake-up signal generated according to the ZC sequence is good, and the interference when the wake-up signals of the plurality of terminal devices multiplex the same air interface resource is small, the wake-up signals of the plurality of terminal devices can multiplex the same air interface resource, thereby reducing the air interface resource overhead of the network device.
In one embodiment, the first ZC sequence may be generated from a ZC root sequence and cyclic shift information, and thus, a ZC sequence with better autocorrelation may be generated from the ZC root sequence and cyclic shift information. The cyclic shift information may include cyclic shift bit number information, which is information of the number of bits that the ZC sequence itself needs to be shifted.
In an embodiment, the cyclic shift information may further include at least one of cell-level cyclic shift information of a cell in which the terminal device is located or time-domain-level cyclic shift information of an air interface resource, and the wake-up signal sent to the terminal device may be randomized in time and/or space, so that long-term or fixed interference generated by the terminal device on a terminal device in a neighboring cell may be avoided.
In one embodiment, N second ZC sequences may be generated from L ZC root sequences and M cyclic shift information, and the N second ZC sequences may be concatenated to generate a first ZC sequence. Because the ZC sequence generating the wake-up signal is formed by cascading a plurality of ZC sequences, and each ZC sequence in the plurality of ZC sequences can be multiplexed by a plurality of terminal devices, the number of the terminal devices multiplexing air interface resources can be increased, and the air interface resource overhead of the network device can be further reduced. L and M are integers greater than or equal to 1, N is greater than or equal to the maximum of L and M, and N is an integer greater than or equal to 2.
In one embodiment, the value of the first ZC sequence may be multiplied by a value of a sequence generated based on a pseudo-random sequence to obtain a product sequence, and then a wake-up signal may be generated based on the product sequence.
In an embodiment, the configuration parameter may be sent to the terminal device, where the configuration parameter carries ZC sequence parameters, and the ZC sequence parameters are one or more parameters used to generate the first ZC sequence, and the ZC sequence parameters may indicate that the terminal device detects, in a sleep stage of the DRX mode, whether to receive, through an air interface resource, a wake-up signal sent to the terminal device by the network device, and detect, in a continuous stage of the DRX mode, DCI sent to the terminal device, where the wake-up signal sent to the terminal device by the network device is detected to be received through the air interface resource. Therefore, the terminal equipment can detect whether the wake-up signal sent to the terminal equipment exists according to the ZC sequence parameters.
In one embodiment, the ZC sequence parameters may include at least one of ZC root sequence indication information or cyclic shift information indication information, and the cyclic shift information may contain cyclic shift bit number information.
In an embodiment, the cyclic shift information may further include cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of an air interface resource.
In one embodiment, the ZC sequence parameter is a parameter of each of the N second ZC sequences.
In one embodiment, the first ZC sequence satisfies the following formula:
Figure BDA0001852365410000021
where r (N) is the first ZC sequence, N is 0,1, … …, ρ N-1, N is the signal transmission width, ρ is the signal transmission density, and x isq(m) denotes a ZC root sequence, q denotes the root of the ZC root sequence, 1 < q < NZC，m＝(n+V)modNZC，m＝0,1,……,NZC-1，NZCDenotes the length of the first ZC sequence, mod denotes the remainder, V denotes the total number of cyclic shift bits, and V is determined based on the cyclic shift information.
A second aspect discloses a communication method, which detects whether a wake-up signal sent by a network device to a terminal device is received through an air interface resource according to ZC sequence parameters at a sleep stage of a DRX mode, and detects DCI sent to the terminal device at a continuous stage of the DRX mode when detecting that the wake-up signal sent by the network device to the terminal device is received through the air interface resource. Therefore, the DCI transmitted to the terminal device is detected only when the wake-up signal transmitted to the terminal device is detected, and thus, the power consumption of the terminal device can be reduced. The ZC sequence parameters are one or more parameters used for generating a first ZC sequence, and the wake-up signal is generated according to the first ZC sequence.
In one embodiment, configuration parameters carrying ZC sequence parameters sent from a network device are received, which indicates that an awake signal sent by the network device is generated according to a ZC sequence, and a terminal device can detect whether the network device sends the awake signal to the terminal device according to the ZC sequence parameters.
In one embodiment, the ZC sequence parameters may include at least one of ZC root sequence indication information or cyclic shift information indication information, and the cyclic shift information may contain cyclic shift bit number information.
In an embodiment, the cyclic shift information may further include cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of an air interface resource.
In one embodiment, the ZC sequence parameter is a parameter of each of N second ZC sequences, the N second ZC sequences are generated from L ZC root sequences and M cyclic shift information, L and M are integers greater than or equal to 1, N is greater than or equal to a maximum number of L and M, and N is an integer greater than or equal to 2, and the first ZC sequence is generated by concatenating the N second ZC sequences.
A third aspect discloses a communication apparatus, which may be a network device or a chip in the network device. The apparatus may include a processing unit and a transceiver unit. When the apparatus is a network device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the network device may further include a storage unit, which may be a memory; the storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so as to enable the network device to perform the corresponding functions in the first aspect. When the apparatus is a chip within a network device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, a circuit, or the like; the processing unit executes instructions stored in a storage unit (e.g., a register, a cache, etc.) within the chip, or a storage unit (e.g., a read-only memory, a random access memory, etc.) external to the chip within the network device, so as to enable the network device to perform the corresponding functions in the first aspect.
A fourth aspect discloses a communication apparatus, which may be a terminal device or a chip in the terminal device. The apparatus may include a processing unit and a transceiver unit. When the apparatus is a terminal device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the terminal device may further include a storage unit, which may be a memory; the storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so as to enable the terminal device to perform the corresponding functions in the second aspect. When the apparatus is a chip in a terminal device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, a circuit, or the like; the processing unit executes instructions stored in a storage unit (e.g., a register, a cache, etc.) within the chip, or a storage unit (e.g., a read-only memory, a random access memory, etc.) external to the chip within the terminal device, so as to enable the terminal device to perform the corresponding functions in the second aspect.
A fifth aspect discloses a storage medium having a program stored thereon, which when executed, implements a communication method as disclosed in the first aspect or any embodiment of the first aspect, or any embodiment of the second aspect.
A sixth aspect provides a computer program product comprising computer program code for implementing a communication method as provided by the first aspect or any embodiment of the first aspect, or the second aspect or any embodiment of the second aspect, when the computer program code is run by a terminal device or a network device.
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FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a symbol position of a CSI-RS resource according to an embodiment of the present invention;
fig. 3 is a flow chart of a communication method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another communication device disclosed in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of another communication device disclosed in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device disclosed in the embodiment of the present invention;
fig. 8 is a schematic structural diagram of another terminal device disclosed in the embodiment of the present invention;
fig. 9 is a schematic structural diagram of another terminal device disclosed in the embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses a communication method and equipment, which are used for reducing the air interface resource overhead of network equipment. The following are detailed below.
In order to better understand a communication method and device disclosed in the embodiments of the present invention, a network architecture used in the embodiments of the present invention is described below. Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in fig. 1, the network architecture may include a terminal device 1 and a network device 2, and the terminal device 1 and the network device 2 may communicate with each other through radio waves, visible light, laser light, infrared light, optical photons, power lines, coaxial cables, copper stranded wires, and the like. The terminal device 1 may be a User Equipment (UE) or a Subscriber Station (SS). The network device 2 may be a Base station, a wireless access Point, a transceiver station, a relay station, a cell, a Transmission Point (TRP), an Evolved Node Base station (eNB), a new generation Base station (gNB), and the like. And a network device 2 configured to transmit DCI to the terminal device 1, wherein the DCI indicates information of a resource for receiving or transmitting a signal. The terminal device 1 is configured to detect DCI, obtain information of a resource for receiving or transmitting a signal from the DCI when the DCI is detected, and receive or transmit the signal on the resource corresponding to the information, for example, receive a Physical Downlink Shared Channel (PDSCH) or transmit a Physical Uplink Shared Channel (PUSCH).
In order to better understand a communication method and device disclosed in the embodiments of the present invention, an application scenario used in the embodiments of the present invention is described below. The DRX mode includes a plurality of DRX cycles, each DRX cycle including a Sleep phase (Sleep) and an On Duration phase (On Duration). The terminal equipment can completely shut down communication devices such as a radio frequency transceiver and a baseband processor in a sleep stage so as to reduce power consumption. At the beginning of each DRX cycle, the terminal device is in an on duration phase, the terminal device is awaken and monitors a Physical Downlink Control Channel (PDCCH), and once the DCI of the terminal device is received in the PDCCH, the terminal device restarts an inactive timer (inactive timer) to time, and if the terminal device does not receive the DCI of the terminal device in the on duration phase or the terminal device receives the DCI of the terminal device but the inactive timer times out, the terminal device returns to the sleep phase again. It should be noted that, in general, the terminal device is not woken up when the persistent phase arrives, but is woken up in several time slots before the persistent phase arrives, and is first synchronized with the time frequency offset, so as to prevent the clock and the operating frequency of the system from deviating from the clock and the frequency domain of the network device due to long-time dormancy of the terminal device. Meanwhile, the terminal device may also try to receive the downlink synchronization signal and update the system message first, so as to prevent the system message from deviating after the terminal device moves from one cell to another cell.
In the NR system, the third Generation Partnership Project (3 GPP) defines a Channel State information reference Signal (CSI-RS) for tracking (tracking), and the CSI-RS includes a TRS. The TRS is configured to perform a fine time-frequency offset estimation on the terminal device. Due to the limitation of the manufacturing cost of the terminal device, the precision of the used frequency generation crystal oscillator is not particularly high, which causes the deviation of the self-maintenance time and the working frequency of the terminal device and the clock and the frequency of the network device after the terminal device is started and operated for a period of time, so that the network device needs to send a specific reference signal for the terminal device to estimate the timing deviation, the frequency domain deviation, the delay expansion and the Doppler expansion between the terminal device and the network device, and compensate the self time frequency offset. The TRS of the NR is configured by Non-Zero Power (Non-Zero Power, NZP) CSI-RS Resource sets (Resource sets), each of which contains two or 4 CSI-RS resources, each of which represents a Resource Element (RE) transmitted with a certain frequency domain density and bandwidth. Referring to fig. 2, fig. 2 is a schematic diagram illustrating a symbol position of a CSI-RS resource according to an embodiment of the invention. As shown in fig. 2, each CSI-RS resource set may have 4 symbols (upper diagram in fig. 2) or 2 symbols (lower diagram in fig. 2). The positions of symbols transmitted by each CSI-RS resource in the CSI-RS resource set are different, but the transmission bandwidth, the density and the frequency domain position are the same. There are two TRS transmission modes, one is periodic transmission: each CSI-RS resource set represents one TRS signal (burst) in one transmission period, and only one TRS signal exists in one period; another is non-periodic transmission, and the non-periodic TRS must be triggered by the uplink scheduling DCI. The configuration signaling of the current NZP CSI-RS resource set may be as follows:
Figure BDA0001852365410000051
when the configuration signaling is used for TRS, the TRS-Info indication configuration is set to true, and nzp-CSI-RS-Resources are configured to 2 or 4.
When the terminal device is in the idle state, the terminal device is typically in the sleep state, but the terminal device needs to wake up every certain period of time to attempt to receive a page (Paging). The time at which the terminal device is awakened to receive a page is called a Paging Opportunity (PO). In practical systems, the network device does not send a page to the terminal device at every PO, so that the terminal device wakes up at the PO most of the time to receive the page is an ineffective operation and increases the power consumption of the terminal device. Therefore, a wake up signal (wake up signal) is introduced in a narrowband Internet of Things (NB-IoT) system. If the network device determines to send a page to the terminal device in a certain PO, the network device will send a wake-up signal to the terminal device before the PO arrives, otherwise the network device will not send the wake-up signal to the terminal device. The terminal device attempts to receive the wake-up signal at a time before the PO arrives, and upon receiving the wake-up signal, the terminal device confirms that a paging message exists in the next PO and attempts to receive a page. On the contrary, if the terminal device does not receive the wake-up signal, the terminal device will consider that there is no paging message in the next PO, and the terminal device will not attempt to receive the paging and continue to sleep. Because the power consumption and complexity of receiving the wake-up signal are far less than those of trying to receive the paging, and the probability of sending the paging in the idle state is not high, the power consumption of the terminal device can be greatly saved by the wake-up signal.
The current sequence generation formula of the CSI-RS is as follows:
Figure BDA0001852365410000052
wherein r (d) represents a generated sequence, c (i) represents a pseudo-random sequence used for the generated sequence, and c (i) is an initial valueinitThe following were used:
Figure BDA0001852365410000053
wherein,
Figure BDA0001852365410000061
indicating the position of the symbol in a slot,
Figure BDA0001852365410000062
indicating the slot position in a radio frame, nIDIndicating the identity of the cell or the identity of the terminal device. The pseudo-random sequence is a non-orthogonal sequence, and the sequence r (d) generated by the pseudo-random sequence is also a non-orthogonal sequence.
The ZC (Zadoff-Chu) sequence is a complex sequence, the ZC root sequence xqThe formula (m) is as follows:
Figure BDA0001852365410000063
wherein q represents the root planting of a ZC root sequence, 1 < q < NZC，m＝0,1,……,NZC-1，NZCDenotes the length of the ZC sequence, NZCIs a prime number. The ZC sequence is a constant amplitude zero auto-correlation sequence and has the following characteristics: the amplitude of each element in the sequence is a constant; one sequence has an autocorrelation of 0 with the sequence resulting from its cyclic shift. The cross-correlation values of ZC sequences of the same length and different q values are
Figure BDA0001852365410000064
In order to reduce the power consumption of the terminal device during the continuous period in the DRX mode, a wake-up signal which can be used in the DRX mode is designed, and the wake-up signal is transmitted based on the non-periodic TRS. The transmission condition of the wake-up signal (i.e. TRS-based wake-up signal) needs to satisfy the following condition:
(1) the wake-up signal is sent in the Nth time slot before the arrival of the continuous phase in the sleep phase, wherein N can be 2-10 time slots;
(2) in the subsequent persistent phase, there is a PDCCH sent to the current terminal device. That is, the network device may send the wake-up signal only when there is a PDCCH sent to the terminal device in the persistent phase, and not send the wake-up signal otherwise.
NR may configure a special high configuration signaling for the wake-up signal for the terminal device, where the configuration signaling may be as follows:
Figure BDA0001852365410000065
the wakeup-signal-resource id is an identifier of a NZP CSI-RS resource set used for sending the wake-up signal, and indicates that one TRS resource configuration can be used for sending the wake-up signal in the DRX mode and providing time frequency offset tracking at the same time. The terminal device receives a wake-up signal configuration signaling sent by the network device after entering a connected state, and when the terminal device is in a sleep stage after entering a DRX mode, if the configuration signaling includes a wake-up-offset (wakeup-offset) indication, the terminal device determines that a plurality of time slots before a continuous stage arrive are woken up according to the wake-up offset indication; if the wake-up offset indication is not included in the configuration signaling, the terminal device wakes up M time slots before the duration phase, where M is a preset value. After the terminal equipment wakes up, whether the network equipment sends a wake-up signal or not is detected at a specific symbol position according to the configuration. The detection may be based on power detection, e.g., an average received power at a particular symbol position is greater than a threshold, then the network device is deemed to have transmitted a wake-up signal, otherwise the network device is deemed not to have transmitted a wake-up signal. If the terminal device detects the wake-up signal sent by the network device, it indicates that there may be a PDCCH sent to the terminal device in L consecutive stages (generally, L takes 1) after the wake-up signal, at this time, the terminal device performs fine time-frequency offset estimation by using the current wake-up signal, and blindly detects the PDCCH in L designated consecutive stages. If the terminal device does not detect the wake-up signal, it indicates that there is no PDCCH sent to the terminal device in the L continuous periods after the sleep period, at this time, the terminal device will turn off the receiver to continue the sleep, and after that, the continuous DRX cycles including the L continuous periods will not wake up. In a downlink configuration of a general terminal device, in order to implement tracking and adjusting of a delay offset (delay offset) by the terminal device, a transmission bandwidth of a wake-up signal is usually set to be relatively large, for example, a transmission bandwidth of a typically configured wake-up signal is 52RB, and meanwhile, considering that one wake-up signal occupies 4 symbols or 2 symbols in a time domain, a large amount of air interface time-frequency resources are required to be occupied for transmitting the wake-up signal based on an aperiodic TRS once. Considering that the main purpose of the wake-up signal is to indicate whether a single terminal device needs to wake up, if there are a large number of terminal devices configured with the wake-up signal in a cell, it is difficult for the network device to bear such huge overhead of air interface resources of the wake-up signal. One idea is to use a code division multiplexing method to multiplex the same time-frequency resources with the wake-up signals of different terminal devices, but the existing CSI-RS uses pseudo-random sequence generation, and when signals of multiple different terminal devices are transmitted in the same time-frequency resource, the interference between them is large, which increases the probability of false alarm or missed detection.
Referring to fig. 3, fig. 3 is a schematic flow chart of a communication method according to an embodiment of the present invention based on the network architecture shown in fig. 1. As shown in fig. 3, the communication method may include the following steps.
301. And the network equipment sends the configuration parameters to the terminal equipment.
In this embodiment, after the terminal device enters the connection state, the network device determines configuration parameters of the terminal device, where the configuration parameters carry ZC sequence parameters, and the ZC sequence parameters are one or more parameters used to generate a ZC sequence. The ZC sequence parameter includes at least one of root sequence indication information or cyclic shift information indication information of the ZC sequence, and the cyclic shift information may include cyclic shift bit number information that is information of a number of bits that the ZC sequence itself needs to be cyclically shifted. The cyclic shift information may also include cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of an air interface resource, different cyclic shift additional values may be configured for different cells, and different cyclic shift additional values may be configured for different symbols, that is, different symbols for sending the wake-up signal are different, and the cyclic shift additional values corresponding to the symbols are different.
In this embodiment, the network device may send the configuration parameter and the wake-up signal Resource configuration to the terminal device in a Radio Resource Control (RRC) connected state. After receiving the resource configuration of the wake-up signal, the terminal equipment indicates that the wake-up signal is generated according to the ZC sequence if the configuration parameters are received at the same time, and indicates that the wake-up signal is generated according to the pseudo-random sequence if the configuration parameters are not received. The network device does not need to send the configuration parameters to the terminal device, and the network device may determine the configuration parameters according to the number of the terminal devices in the cell, and may send the configuration parameters to the terminal device under the condition that the number of the terminal devices in the cell is large, so that the air interface resource overhead of the network device may be reduced. Under the condition that the number of terminal devices in a cell is small, because the number of wake-up signals required to be sent by the network device is small, the overhead of air interface resources of the network device is not large, configuration parameters can not be sent, namely, the wake-up signals are generated according to a pseudo-random sequence, and the compatibility with the existing network or protocol can be improved.
In this embodiment, when the ZC sequence parameter includes root sequence indication information and cyclic shift information indication information of the ZC sequence, but the cyclic shift information only includes information of the number of cyclic shifts, configuration signaling of the configuration parameter may be as follows:
Figure BDA0001852365410000071
Figure BDA0001852365410000081
wherein, the sequence-cyclic-shift-index represents the number of cyclic shift times, the sequence-cyclic-shift-unit represents the number of unit cyclic shift bits, and the sequence-cyclic-shift-root represents the root of the ZC root sequence. The sequence-cyclic-shift-index and sequence-cyclic-shift-unit are cyclic shift bit number information. The unit cyclic shift bit number may be a preset value or a value configured in a configuration parameter. In the case where the number of unit cyclic shift bits is a preset value, the network device does not need to indicate the number of unit cyclic shift bits in the configuration parameter. In one embodiment, the cyclic shift bit number information in the configuration signaling may be directly the cyclic shift bit number. The ZC root sequence may be a preset value or a value configured in configuration parameters, and in the case where the ZC root sequence is a preset value, the network device does not need to indicate root planting of the ZC root sequence in the configuration parameters. Under the condition that the ZC sequence parameters include ZC root sequence indication information and cyclic shift information indication information, where the cyclic shift information includes cyclic shift bit number information, cell level cyclic shift information of a cell in which the terminal device is located, and time domain level cyclic shift information of an air interface resource, configuration signaling of the configuration parameters may be as follows:
Figure BDA0001852365410000082
wherein, the sequence-cyclic-shift-symbol-offset represents the cyclic shift additional value of the first symbol, the sequence-cyclic-shift-symbol-delta represents the increment of the cyclic shift additional value among different symbols, and the sequence-cyclic-shift-cell-offset represents the cell-level cyclic shift additional value. In the case that the wake-up signal is transmitted using the TRS signal, since the TRS signal is carried by 2 or 4 symbols, the time-domain cyclic shift information of the air interface resource may be configured with a cyclic shift additional value for each symbol, or configured with a cyclic shift additional value for the first symbol, and the cyclic shift additional value of the following symbol may be changed in a fixed form, for example, the cyclic shift additional value of each symbol differs by a fixed value.
In this embodiment, after receiving the ZC sequence parameter from the network device, the terminal device may generate a first ZC sequence according to the ZC sequence parameter, and generate a verification wake-up signal according to the first ZC sequence.
302. A network device generates a ZC sequence.
In this embodiment, when the network device has DCI to transmit to the terminal device, the ZC sequence may be generated first, may be generated only from the ZC root sequence, or may be generated together with the cyclic shift information from the ZC root sequence. The formula for generating a ZC sequence is as follows:
Figure BDA0001852365410000091
where r (N) denotes a ZC sequence, N is 0,1, … …, ρ N-1, N is a signal transmission width, and ρ is a signal transmission density in Resource Blocks (RBs) to indicate how many REs are in each RB, q denotes a root of the ZC root sequence, and 1 < q < NZC. In the case where a ZC sequence is generated from only a ZC root sequence, m is nmodNZC，m＝0,1,……,NZC-1, mod represents remainder. In the case of generating a ZC sequence from a ZC root sequence together with cyclic shift information, m ═ n + V) modNZCAnd V denotes the total number of cyclic shift bits, and V is determined from the cyclic shift information. The number of cyclic shift bits can be determined by the number of unit cyclic shift bits, i.e., several bits can be shifted per cyclic shift, and the number of cyclic shifts, i.e., the total number of times of cyclic shifts is performedSeveral cyclic shifts are performed. The number of cyclic shift bits is equal to the product of the number of cyclic shift bits per unit and the number of cyclic shifts. For example: the number of cyclic shifts is 4, and the number of cyclic shifts is 4 × 10, with a unit of 10 cyclic shifts. The number of cyclic shifts is greater than or equal to 0 and less than or equal to NZCDivided by the number of unit cyclic shift bits and subtracted by 1. The total number of cyclic shift bits is equal to a sum of the number of cyclic shift bits and at least one of the cell level cyclic shift additional value or the time domain level cyclic shift additional value.
In this embodiment, because the length of the cyclic prefix of the communication system is limited, and generally, only 12 different terminal devices can be multiplexed at most through cyclic shift change under the root sequences with the same ZC sequence, in order to enable more terminal devices to multiplex the same time-frequency resource, N second ZC sequences may be generated according to L ZC root sequences and M cyclic shift information, and the N second ZC sequences are cascaded to generate a ZC sequence. Wherein L and M are integers greater than or equal to 1, N is greater than or equal to the maximum number of L and M, and N is an integer greater than or equal to 2. For example, assuming that the bandwidth of the CSI-RS is 52RB and the RB density is 3, the sequence length of the CSI-RS is 52 × 3-156. The 156 long signal sequence may be divided into 3 segments, each segment being 52 long, each of which may be a second ZC sequence. Suppose that the number of terminal equipments multiplexed per segment of sequence is n (n)<12) Then n can be achieved using 3 sequences of the same root sequence3Multiplexing of individual terminal devices. Correspondingly, the ZC sequence parameter may be a parameter of each of the N second ZC sequences.
303. The network device generates a wake-up signal according to the ZC sequence.
In this embodiment, after the network device generates the ZC sequence, the wake-up signal is generated according to the ZC sequence, which may be a parameter such as multiplying the ZC sequence by a power factor. The value of the ZC sequence may be multiplied by a value of a sequence generated based on the pseudo-random sequence to obtain a product sequence, and then the product sequence may be multiplied by a parameter such as a power factor. The ZC sequence and the pseudorandom sequence must have the same length. Generally, the signal values of the wake-up signal are mapped to the REs allocated to the wake-up signal in sequence from low to high in the frequency domain and from first to last in the time domain.
304. And the network equipment sends a wake-up signal to the terminal equipment through the air interface resource.
In this embodiment, the wake-up signal is sent to the terminal device through the air interface resource in the sleep stage of the terminal device, and the wake-up signal may be sent to the terminal device through the CSI-RS.
305. The terminal device detects whether a wake-up signal sent by the network device to the terminal device is received through an air interface resource according to ZC sequence parameters at the sleep stage of the DRX mode, and executes step 306 when detecting that the wake-up signal sent by the network device to the terminal device is received through the air interface resource.
In this embodiment, the terminal device detects whether a wake-up signal sent to the terminal device by the network device is received through an air interface resource in the first several time slots from the sleep stage of the DRX mode to the persistent stage according to the ZC sequence parameter, that is, performs autocorrelation operation on the verification wake-up signal and the detected wake-up signal, and if the value of the autocorrelation operation is greater than a threshold, indicates that the detected wake-up signal is the wake-up signal sent to the terminal device, and step 306 is executed. And under the condition that the value of the autocorrelation operation is less than or equal to the threshold value, the detected wake-up signal is not the wake-up signal sent to the terminal equipment, the detection is continued, and if the wake-up signal sent to the terminal equipment is not detected at the end of the sleep phase, the terminal equipment enters the sleep phase again.
306. The terminal equipment detects DCI sent to the terminal equipment in the continuous phase of the DRX mode.
In this embodiment, the terminal device detects the wake-up signal sent to the terminal device, which indicates that the network device will send the DCI to the terminal device in the persistent phase, and therefore, the terminal device detects the DCI sent to the terminal device in the persistent phase of the DRX mode.
Referring to fig. 4, based on the network architecture shown in fig. 1, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in fig. 4, the communication apparatus may include:
a processing unit 401, configured to generate a wake-up signal according to the first ZC sequence;
a transceiving unit 402, configured to send, to the terminal device, the wake-up signal generated by the processing unit 401 over an air interface resource, where the wake-up signal is used to instruct the terminal device to detect DCI sent to the terminal device in the DRX mode.
As a possible implementation, the processing unit 401 is further configured to generate the first ZC sequence from the ZC root sequence and cyclic shift information, where the cyclic shift information may include cyclic shift bit number information.
As a possible implementation manner, the cyclic shift information may further include at least one of cell-level cyclic shift information of a cell in which the terminal device is located or time-domain-level cyclic shift information of an air interface resource. .
As one possible implementation, the processing unit 401 generating the first ZC sequence from the ZC root sequence and the cyclic shift information includes:
generating N second ZC sequences according to L ZC root sequences and M cyclic shift information, wherein L and M are integers which are larger than or equal to 1, N is larger than or equal to the maximum number of L and M, and N is an integer which is larger than or equal to 2;
and cascading the N second ZC sequences to generate a first ZC sequence.
As a possible implementation, the processing unit 401 generating the wake-up signal according to the first ZC sequence includes:
multiplying the value of the first ZC sequence by the value of a sequence generated based on the pseudo-random sequence to obtain a product sequence;
a wake-up signal is generated from the product sequence.
As a possible implementation manner, the transceiver unit 402 is further configured to send configuration parameters to the terminal device, where the configuration parameters carry ZC sequence parameters, and the ZC sequence parameters are one or more parameters used for generating the first ZC sequence.
As one possible embodiment, the ZC sequence parameters may include at least one of ZC root sequence indication information or cyclic shift information indication information, and the cyclic shift information may include cyclic shift bit number information.
As a possible implementation manner, the cyclic shift information may further include cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of an air interface resource.
As a possible implementation, the ZC sequence parameter is a parameter of each of the N second ZC sequences.
As a possible implementation, the first ZC sequence satisfies the following formula:
Figure BDA0001852365410000111
where r (N) is the first ZC sequence, N is 0,1, … …, ρ N-1, N is the signal transmission width, ρ is the signal transmission density, and x isq(m) denotes a ZC root sequence, q denotes the root of the ZC root sequence, 1 < q < NZC，m＝(n+V)modNZC，m＝0,1,……,NZC-1，NZCDenotes the length of the first ZC sequence, mod denotes the remainder, V denotes the total number of cyclic shift bits, and V is determined based on the cyclic shift information.
More detailed descriptions about the processing unit 401 and the transceiver unit 402 can be directly obtained by referring to the description about the network device in the method embodiment shown in fig. 3, which is not described herein again.
Referring to fig. 5, based on the network architecture shown in fig. 1, fig. 5 is a schematic structural diagram of another communication device disclosed in the embodiment of the present invention. As shown in fig. 5, the communication device may include a processing unit 501 and a transceiver unit 502, where the processing unit 501 is configured to: :
controlling a transceiver unit 502 to detect whether a wake-up signal sent to a terminal device by a network device is received through air interface resources according to ZC sequence parameters in a sleep stage of a DRX mode, wherein the ZC sequence parameters are one or more parameters for generating a first ZC sequence, and the wake-up signal is generated according to the first ZC sequence;
the control transceiver unit 502 detects DCI transmitted to the terminal device at the DRX mode persistent stage when detecting that an awake signal transmitted to the terminal device by the network device is received over air interface resources.
As a possible implementation manner, the transceiver unit 502 is further configured to receive a configuration parameter sent from the network device, where the configuration parameter carries a ZC sequence parameter.
As one possible embodiment, the ZC sequence parameters may include at least one of ZC root sequence indication information or cyclic shift information indication information, and the cyclic shift information may include cyclic shift bit number information.
As a possible implementation manner, the cyclic shift information may further include cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of an air interface resource.
As a possible embodiment, the ZC sequence parameter is a parameter of each of N second ZC sequences, the N second ZC sequences are generated from L ZC root sequences and M cyclic shift information, L and M are integers greater than or equal to 1, N is greater than or equal to a maximum number of L and M, and N is an integer greater than or equal to 2, and the first ZC sequence is generated by cascading the N second ZC sequences.
More detailed descriptions about the processing unit 501 and the transceiver unit 502 may be directly obtained by referring to the description about the terminal device in the embodiment of the method shown in fig. 3, which is not repeated herein.
Referring to fig. 6, based on the network architecture shown in fig. 1, fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present invention. As shown in fig. 6, the communication device may include a processor 601, a memory 602, a transceiver 603, and a connection 604. The memory 602 may be separate and the connection 604 may be connected to the processor 601. The memory 602 may also be integrated with the processor 601. A transceiver 603 for communicating with other devices, network elements or communication networks, such as ethernet, Radio Access Network (RAN), WLAN-less, etc. The connection 604 may include a path for transmitting information between the above components. Wherein the memory 602 stores program instructions and the processor 601 is configured to execute the program instructions stored in the memory 602. Wherein:
in one embodiment, the communication device is a terminal device or a chip in the terminal device, when the program instructions stored in the memory 602 are executed, the processor 601 is configured to call the program instructions stored in the memory 602 to perform the operations performed by the processing unit 501 in the above embodiments, and the transceiver 603 is configured to perform the operations performed by the transceiver 502 in the above embodiments.
In another embodiment, the communication apparatus is a network device or a chip in a network device, when the program instructions stored in the memory 602 are executed, the processor 601 is configured to call the program instructions stored in the memory 602 to perform the operations performed by the processing unit 401 in the above embodiments, and the transceiver 603 is configured to perform the operations performed by the transceiver 402 in the above embodiments.
The embodiment of the invention also discloses a communication device which can be terminal equipment or a chip in the terminal equipment, or network equipment or a chip in the network equipment. The communication device may be configured to perform the operations performed by the terminal device or the network device in the above method embodiments.
When the communication device is a terminal device, please refer to fig. 7, and fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. For easy understanding and illustration, in fig. 7, the terminal device is exemplified by a mobile phone. As shown in fig. 7, the terminal device may include a processor, a memory, a radio frequency circuit, an antenna, and an input-output means. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.
When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently from the processor or may be integrated with the processor, which is not limited in this embodiment of the present invention.
In the embodiment of the present invention, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 7, the terminal device includes a transceiving unit 710 and a processing unit 720. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiver 710 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiver 710 may be regarded as a transmitting unit, that is, the transceiver 710 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.
It should be understood that the transceiver unit 710 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above method embodiments, and the processing unit 720 is configured to perform other operations besides the transceiving operation on the terminal device in the above method embodiments.
For example, in one implementation, the transceiver 710 is configured to perform the receiving operation and steps 305 to 306 in steps 301 and 304 in fig. 3, and/or the transceiver 710 is further configured to perform other transceiving steps in the terminal device in the embodiment of the present invention. The processing unit 720 is configured to execute other processing steps on the terminal device side in the embodiment of the present invention.
When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
Please refer to fig. 8 when the communication apparatus in this embodiment is a terminal device, and fig. 8 is a schematic structural diagram of another terminal device disclosed in this embodiment of the present invention. As an example, the device may perform a function similar to the processor of FIG. 6. In fig. 8, the terminal device includes a processor 810, a transmission data processor 820, and a reception data processor 830. The processing unit 501 in the above embodiments may be the processor 810 in fig. 8, and performs corresponding functions. The transceiver unit 502 in the above embodiments may be the transmit data processor 820 and/or the receive data processor 830 in fig. 8. Although fig. 8 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.
Referring to fig. 9, fig. 9 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. The processing device 900 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 903, an interface 904. The processor 903 performs the functions of the processing unit 501, and the interface 904 performs the functions of the transceiver unit 502. As another variation, the modulation subsystem includes a memory 906, a processor 903, and a program stored on the memory 906 and executable on the processor, and the processor 903 executes the program to implement the method on the terminal device side in the above method embodiments. It should be noted that the memory 906 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 900, as long as the memory 906 is connected to the processor 903.
As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, perform the method on the terminal device side in the above-described method embodiments.
As another form of the present embodiment, there is provided a computer program product containing instructions that, when executed, perform the method on the terminal device side in the above-described method embodiments.
The embodiment of the invention also discloses a storage medium, wherein the storage medium is stored with a program, and when the program runs, the communication method shown in the figure 3 is realized.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims (30)

1. A method of communication, comprising:
generating a wake-up signal according to the first ZC sequence;
and sending the wake-up signal to the terminal equipment through an air interface resource, wherein the wake-up signal is used for indicating the terminal equipment to detect downlink control signaling DCI sent to the terminal equipment in a continuous stage of a Discontinuous Reception (DRX) mode.
2. The method of claim 1, further comprising:
and generating the first ZC sequence according to the ZC root sequence and cyclic shift information, wherein the cyclic shift information comprises cyclic shift digit information.
3. The method according to claim 2, wherein the cyclic shift information further includes at least one of cell-level cyclic shift information of a cell in which the terminal device is located or time-domain-level cyclic shift information of the air interface resource.
4. The method of claim 2 or 3, wherein the generating the first ZC sequence according to the ZC root sequence and the cyclic shift information comprises:
generating N second ZC sequences according to L ZC root sequences and M cyclic shift information, wherein L and M are integers which are larger than or equal to 1, N is larger than or equal to the maximum number of L and M, and N is an integer which is larger than or equal to 2;
and cascading the N second ZC sequences to generate the first ZC sequence.
5. The method according to any of claims 1-4, wherein said generating a wake-up signal according to the first ZC sequence comprises:
multiplying the value of the first ZC sequence by the value of a sequence generated based on the pseudo-random sequence to obtain a product sequence;
and generating a wake-up signal according to the product sequence.
6. The method according to any one of claims 1-5, further comprising:
and sending configuration parameters to the terminal equipment, wherein the configuration parameters carry ZC sequence parameters, and the ZC sequence parameters are one or more parameters used for generating the first ZC sequence.
7. The method of claim 6, wherein the ZC sequence parameters comprise at least one of ZC root sequence indication information or cyclic shift information indication information, the cyclic shift information containing cyclic shift number information.
8. The method according to claim 7, wherein the cyclic shift information further includes cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of the air interface resource.
9. The method of claim 7 or 8, wherein the ZC sequence parameters are parameters of each of the N second ZC sequences.
10. A method according to claim 2 or 3, characterized in that said first ZC sequence satisfies the following formula:
Figure FDA0001852365400000021
where r (N) is the first ZC sequence, N is 0,1, … …, ρ N-1, N is a signal transmission width, ρ is a signal transmission density, and x isq(m) denotes a ZC root sequence, q denotes the root of the ZC root sequence, 1 < q < NZC，m＝(n+V)modNZC，m＝0,1,……,NZC-1，NZCIndicating the length of the first ZC sequence, mod indicating the remainder, V indicating the total number of cyclic shift bits, and V being determined according to the cyclic shift information.
11. A method of communication, comprising:
in a sleep stage of a DRX mode, detecting whether an awakening signal sent to a terminal device by a network device is received through an air interface resource or not according to ZC sequence parameters, wherein the ZC sequence parameters are one or more parameters used for generating a first ZC sequence, and the awakening signal is generated according to the first ZC sequence;
and under the condition that the wake-up signal sent to the terminal equipment by the network equipment is detected to be received through the air interface resource, detecting the DCI sent to the terminal equipment in the continuous stage of the DRX mode.
12. The method of claim 11, further comprising:
and receiving configuration parameters sent by the network equipment, wherein the configuration parameters carry the ZC sequence parameters.
13. The method of claim 11 or 12, wherein the ZC sequence parameters include at least one of ZC root sequence indication information or cyclic shift information indication information, and wherein the cyclic shift information includes cyclic shift bit number information.
14. The method according to claim 13, wherein the cyclic shift information further includes cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of the air interface resource.
15. The method according to claim 13 or 14, wherein the ZC sequence parameter is a parameter of each of N second ZC sequences generated from L ZC root sequences and M cyclic shift information, wherein L and M are integers greater than or equal to 1, wherein N is greater than or equal to a maximum number of L and M, wherein N is an integer greater than or equal to 2, and wherein the first ZC sequence is generated by cascading the N second ZC sequences.
16. A communications apparatus, comprising:
a processing unit, configured to generate a wake-up signal according to the first ZC sequence;
and the receiving and sending unit is used for sending the wake-up signal generated by the processing unit to the terminal equipment through air interface resources, and the wake-up signal is used for indicating the terminal equipment to detect the DCI sent to the terminal equipment at the continuous stage of the DRX mode.
17. The apparatus of claim 16, wherein the processing unit is further configured to generate the first ZC sequence from a ZC root sequence and cyclic shift information, wherein the cyclic shift information comprises cyclic shift bit number information.
18. The apparatus of claim 17, wherein the cyclic shift information further includes at least one of cell-level cyclic shift information of a cell in which the terminal device is located or time-domain-level cyclic shift information of the air interface resource.
19. The apparatus of claim 17 or 18, wherein the processing unit generates the first ZC sequence from a ZC root sequence and cyclic shift information comprises:
generating N second ZC sequences according to L ZC root sequences and M cyclic shift information, wherein L and M are integers which are larger than or equal to 1, N is larger than or equal to the maximum number of L and M, and N is an integer which is larger than or equal to 2;
and cascading the N second ZC sequences to generate the first ZC sequence.
20. The apparatus of any one of claims 16-19, wherein the processing unit generating the wake-up signal according to the first ZC sequence comprises:
multiplying the value of the first ZC sequence by the value of a sequence generated based on the pseudo-random sequence to obtain a product sequence;
and generating a wake-up signal according to the product sequence.
21. The apparatus according to any of claims 16-20, wherein the transceiver unit is further configured to send configuration parameters to the terminal device, where the configuration parameters carry ZC sequence parameters, and the ZC sequence parameters are one or more parameters used for generating the first ZC sequence.
22. The apparatus of claim 21, wherein the ZC sequence parameters comprise at least one of ZC root sequence indication information or cyclic shift information indication information, the cyclic shift information including cyclic shift bit number information.
23. The apparatus of claim 22, wherein the cyclic shift information further includes cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of the air interface resource.
24. The apparatus of claim 22 or 23, wherein the ZC sequence parameters are parameters of each of the N second ZC sequences.
25. The apparatus according to claim 17 or 18, wherein the first ZC sequence satisfies the following formula:
Figure FDA0001852365400000031
where r (N) is the first ZC sequence, N is 0,1, … …, ρ N-1, N is a signal transmission width, ρ is a signal transmission density, and x isq(m) denotes a ZC root sequence, q denotes the root of the ZC root sequence, 1 < q < NZC，m＝(n+V)modNZC，m＝0,1,……,NZC-1，NZCIndicating the length of the first ZC sequence, mod indicating the remainder, V indicating the total number of cyclic shift bits, and V being determined according to the cyclic shift information.
26. A communication apparatus, comprising a processing unit and a transceiver unit, wherein the processing unit is configured to:
controlling the transceiver unit to detect whether a wake-up signal sent to a terminal device by a network device is received through an air interface resource according to ZC sequence parameters in a dormant stage of a DRX mode, wherein the ZC sequence parameters are one or more parameters for generating a first ZC sequence, and the wake-up signal is generated according to the first ZC sequence;
and controlling the transceiver unit to detect DCI sent to the terminal equipment at a continuous stage of a DRX mode under the condition that the transceiver unit detects that an awakening signal sent to the terminal equipment by the network equipment is received through the air interface resource.
27. The apparatus of claim 26, wherein the transceiver unit is further configured to receive configuration parameters sent from the network device, and the configuration parameters carry the ZC sequence parameters.
28. The apparatus of claim 26 or 27, wherein the ZC sequence parameters include at least one of ZC root sequence indication information or cyclic shift information indication information, the cyclic shift information including cyclic shift bit number information.
29. The apparatus of claim 28, wherein the cyclic shift information further includes cell-level cyclic shift information of a cell in which the terminal device is located and time-domain-level cyclic shift information of the air interface resource.
30. The apparatus of claim 28 or 29, wherein the ZC sequence parameter is a parameter of each of N second ZC sequences generated from L ZC root sequences and M cyclic shift information, wherein L and M are integers greater than or equal to 1, wherein N is greater than or equal to a maximum number of L and M, wherein N is an integer greater than or equal to 2, and wherein the first ZC sequence is generated by cascading the N second ZC sequences.
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