WO2026000298A1 - 用于无线通信的方法、终端设备和网络设备 - Google Patents
用于无线通信的方法、终端设备和网络设备Info
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- WO2026000298A1 WO2026000298A1 PCT/CN2024/101999 CN2024101999W WO2026000298A1 WO 2026000298 A1 WO2026000298 A1 WO 2026000298A1 CN 2024101999 W CN2024101999 W CN 2024101999W WO 2026000298 A1 WO2026000298 A1 WO 2026000298A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
Definitions
- This application relates to the field of communication technology, and more specifically, to a method, terminal device, and network device for wireless communication.
- terminal devices receive the physical downlink control channel (PDCCH) through blind detection. This involves decoding and performing cyclic redundancy check (CRC) on each PDCCH candidate set to detect whether a PDCCH is being sent to the terminal device. This process incurs significant power overhead.
- PDCH physical downlink control channel
- CRC cyclic redundancy check
- This application provides a method, terminal device, and network device for wireless communication.
- the various aspects covered in this application are described below.
- a method for wireless communication comprising: a terminal device detecting a first sequence, the first sequence being used to demodulate one or more PDCCH candidates, and the first sequence being used to determine whether the one or more PDCCH candidates include a target PDCCH of the terminal device.
- a method for wireless communication comprising: a network device sending a first sequence to a terminal device, the first sequence being used to demodulate one or more PDCCH candidates, and the first sequence being used to determine whether the one or more PDCCH candidates include a target PDCCH of the terminal device.
- a terminal device comprising: a detection module for detecting a first sequence, the first sequence being used to demodulate one or more PDCCH candidates, and the first sequence being used to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- a network device comprising: a transmitting module, configured to transmit a first sequence to a terminal device, the first sequence being configured to demodulate one or more PDCCH candidates, and the first sequence being configured to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- a terminal device including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.
- a network device including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.
- embodiments of this application provide a communication system including the aforementioned terminal device and/or network device.
- the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.
- embodiments of this application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps in the methods described above.
- embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of the methods described in the foregoing aspects.
- the computer program product may be a software installation package.
- embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.
- the terminal device can determine whether the target PDCCH of the terminal device is included in the PDCCH candidate by detecting the first sequence used for demodulating the PDCCH candidate. This helps to reduce blind decoding of the PDCCH, thereby reducing the power consumption caused by PDCCH decoding and achieving energy saving of the terminal device.
- Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.
- Figure 2 is an example diagram of the PDCCH search space.
- Figure 3 is an example of the mapping from REG to CCE.
- Figure 4 is another example diagram of the REG to CCE mapping.
- Figure 5 is an example diagram of PDCCH DMRS.
- Figure 6 is a flowchart illustrating a method for wireless communication provided in an embodiment of this application.
- Figure 7 is an example diagram of determining the target PDCCH based on the first sequence.
- Figure 8 is a schematic diagram of the structure of the terminal device provided in the embodiment of this application.
- Figure 9 is a schematic diagram of the structure of the network device provided in an embodiment of this application.
- Figure 10 is a schematic structural diagram of the communication device provided in an embodiment of this application.
- FIG. 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied.
- the wireless communication system 100 may include a network device 110 and a terminal device 120.
- the network device 110 may be a device that communicates with the terminal device 120.
- the network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.
- Figure 1 illustrates an exemplary network device and two terminal devices.
- the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.
- the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.
- 5G 5th generation
- NR new radio
- LTE long term evolution
- FDD frequency division duplex
- TDD time division duplex
- 6th generation mobile communication systems satellite communication systems, and so on.
- the terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
- UE user equipment
- MS mobile station
- MT mobile terminal
- remote station remote terminal
- mobile device user terminal
- terminal wireless communication device
- user agent user agent
- user device can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
- the terminal device in this application embodiment can be a device that provides voice and/or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc.
- the terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc.
- the UE can act as a base station.
- the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc.
- cellular phones and cars communicate with each other using sidelink signals.
- Cellular phones and smart home devices communicate without relaying communication signals through a base station.
- the network device in this application embodiment can be a device for communicating with a terminal device.
- This network device can also be called an access network device or a wireless access network device, such as a base station.
- the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network.
- RAN radio access network
- a base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc.
- a base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof.
- a base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus.
- a base station can also be a mobile switching center, or a device that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device performing base station functions in future communication systems.
- Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.
- Base stations can be fixed or mobile.
- a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station.
- a helicopter or drone can be configured as a device to communicate with another base station.
- the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU.
- the gNB may also include an AAU.
- Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.
- the PDCCH can be used to carry (or bear) DCI, so that the DCI can be sent to the terminal device via the PDCCH.
- the network device can indicate different control information to the terminal device, such as indicating downlink scheduling information, uplink scheduling information, timeslot format, etc.
- the network device may indicate PDCCH resources (such as time-frequency resources) to the terminal device so that the terminal device can detect the PDCCH on the indicated resources.
- PDCCH resources such as time-frequency resources
- the network device may indicate the PDCCH search space and/or control resource set (CORESET) to the terminal device so that the terminal device can detect the PDCCH according to the indicated search space and/or CORESET.
- CORESET control resource set
- the PDCCH search space can be used to indicate the time-frequency resources for detecting the PDCCH.
- CORESET can be used to indicate information such as the number of resource blocks (RBs) occupied by the PDCCH in the frequency domain and the number of orthogonal frequency division multiplexing (OFDM) symbols occupied in the time domain.
- RBs resource blocks
- OFDM orthogonal frequency division multiplexing
- the search space indicated by the network device to the terminal device may include a common search space (CSS) and a terminal device-specific search space.
- the terminal device-specific search space may also be referred to as the UE-specific search space (USS).
- the common search space may include a PDCCH common search space, which is used for terminal devices to receive PDCCHs of scheduling common information or PDCCHs of information corresponding to terminal device groups.
- the terminal device-specific search space may include a PDCCH terminal device-specific search space, used by the terminal device to receive and schedule terminal device-specific information via a PDCCH.
- the PDCCH search space configuration indicated by the network device may include the CORESET corresponding to the PDCCH search space.
- network devices may instruct terminal devices on the configuration information of the PDCCH search space and/or CORESET via radio resource control (RRC) signaling (or RRC configuration information).
- RRC radio resource control
- the search space mentioned in this application may also be referred to as a search space set.
- the following section uses the NR system as an example to introduce the configuration information of the PDCCH search space and CORESET.
- the configuration information of the PDCCH search space may include one or more of the following: search space identifier (ID), CORESET ID, listening slot period and offset, duration, symbol position within the listening slot, PDCCH candidate(s), and search space type.
- Search space IDs also known as search space indexes, are used to identify the corresponding search space configuration.
- up to 10 search spaces can be configured on each bandwidth part (BWP), and different search spaces have different search space IDs.
- BWP bandwidth part
- the CORESET ID is used to indicate the ID configured in the CORESET, or in other words, the CORESET ID is used to indicate the CORESET associated with this search space.
- the monitoring slot period and offset are used to indicate the period of the monitored slot and its offset within that period.
- the monitoring slot period and offset can be used to indicate the period of the search space and its offset within that period.
- the NR system supports periods of 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 160, 320, 640, 1280, and 2560 slots.
- the monitoring slot period and offset can be indicated, for example, by the parameter ⁇ monitoringSlotPeriodicityAndOffset ⁇ .
- Duration can be used to indicate the number of time slots that a terminal device continuously listens to within the PDCCH search space period.
- the symbol position within the monitored slot can be used to indicate the position of the first symbol of the CORESET being monitored within the PDCCH monitoring slot.
- the symbols within the monitored slot can be indicated, for example, by the parameter monitoringSymbolsWithinSlot.
- PDCCH candidates can be used to indicate configuration information for PDCCH candidates, such as the number of PDCCH candidates.
- the type of search space can be used to indicate whether the PDCCH search space is a public search space or a terminal device-specific search space.
- the configuration information of the search space can include the detection period, slot offset, number of slots, and symbol position within a slot.
- the detection period of this PDCCH search space is 10 slots
- the slot offset is 5 slots
- the number of slots is 2
- the determination of the symbol position within a slot needs to be determined in conjunction with the CORESET configuration information corresponding to the CORESET ID. Since the CORESET corresponding to the CORESET ID contains two symbols, the first symbol position within the slot is determined by listening to the symbol sets of the two CORESETs within the listening slot. 0 and 7.
- the configuration information of the PDCCH CORESET may include one or more of the following: CORESET ID, frequency domain resources, duration, resource mapping method, and precoding granularity.
- the CORESET ID is used to indicate the number of a CORESET, and different CORESETs have different CORESET IDs.
- the CORESET number ranges from 0 to 11, where CORESET 0 is the CORESET indicated in the broadcast message, and the CORESET ID in the RRC configuration information ranges from 1 to 11.
- Frequency domain resources can be used to indicate CORESET frequency domain resources, that is, to indicate the RBs contained in CORESET.
- frequency domain resources can be indicated, for example, by the parameter frequencyDomainResources.
- Duration can be used to indicate the number of consecutive symbols in a CORESET.
- the duration can range from ⁇ 1, 2, 3 ⁇ .
- the resource mapping method can be used to indicate whether the resource mapping method is interleaved or non-interleaved.
- the resource mapping method can be indicated, for example, by the parameter cce-REG-MappingType.
- Precoding granularity can be used to indicate whether the precoding granularity of the demodulation reference signal (DMRS) of the PDCCH is wideband or narrowband precoding.
- the precoding granularity can be indicated, for example, by the parameter precoderGranularity.
- time-frequency resources can be represented in units of resource element groups (REGs).
- REGs can include an OFDM symbol in the time domain and a physical resource block (PRB) in the frequency domain, for a total of 12 resource elements (REs).
- PRB physical resource block
- REGs within a CORESET, can be numbered in a manner that prioritizes the time domain over the frequency domain.
- a number of REGs can form a REG bundle.
- the REG bundle can form a channel control element (CCE), wherein each CCE contains 6 REGs.
- CCE channel control element
- a PDCCH or PDCCH candidate is composed of CCEs, and the number of CCEs that make up a PDCCH is called the aggregation level.
- the CCE aggregation levels supported in NR include 1, 2, 4, 8, and 16, that is, a PDCCH or PDCCH candidate resource can be composed of 1, 2, 4, 8, or 16 CCEs.
- REGs in a CORESET are mapped to CCEs in a time-domain first, then frequency-domain order.
- the mapping process from REGs to CCEs is related to the resource mapping method and the duration of the CORESET. Examples of REG mapping to CCEs are given below with reference to Figures 3 and 4.
- Figure 3 shows an example of REG mapping to CCE in a non-interleaved manner.
- the CCE obtained by REG mapping differs depending on the duration of the CORESET. For example, when the duration of the CORESET is 1 symbol, a CCE obtained by REG mapping consists of 1 symbol in the time domain and 6 RBs in the frequency domain; when the duration of the CORESET is 2 symbols, a CCE obtained by REG mapping consists of 2 symbols in the time domain and 3 RBs in the frequency domain; when the duration of the CORESET is 3 symbols, a CCE obtained by REG mapping consists of 3 symbols in the time domain and 2 RBs in the frequency domain.
- Figure 4 shows an example of REGs being mapped to CCEs in an interleaved manner.
- the duration of CORESET is 3 symbols, and 3 REGs form a REG bundle.
- the CCE of the PDCCH may include a DMRS for demodulating the PDCCH.
- the PDCCH DMRS is fixed on subcarriers 1, 5, and 9 in each PRB, with one DMRS mapped for every four subcarriers.
- An example of the PDCCH DMRS is given below with reference to Figure 5.
- the CORESET contains two symbols and two PRBs. For each symbol, the DMRS is located on subcarriers 1, 5, and 9 of each of the two PRBs corresponding to that symbol.
- c(i) is a pseudo-random sequence.
- the initialization of c(i) is shown in expression (2).
- NID is the number of the intra-wireless time slot. It is determined by the higher-layer configuration parameter pdcch-DMRS-ScramblingID, and NID ⁇ 0,1,...,65535 ⁇ .
- the pdcch-DMRS-ScramblingID parameter is used to indicate the N ID . If this parameter is not configured, in, It is the physical cell ID (physCellId) configured for this serving cell.
- the physical cell ID can be used to identify and distinguish different cells.
- PDCCH DMRS can include different mapping modes. Taking the NR system as an example, the NR system can support two mapping modes of PDCCH DMRS: mapping mode 1 and mapping mode 2.
- Mapping Mode 1 If the higher-layer parameter ⁇ precoderGranularity ⁇ equals ⁇ sameAsREG-bundle ⁇ , then the DMRS resource is located within the REG constituting the PDCCH that the terminal device attempts to decode. In other words, in Mapping Mode 1, the PDCCH DMRS resource is mapped to the REG containing one of the PDCCH candidates in the PDCCH candidate set.
- Mapping Mode 2 If the higher-level parameter ⁇ precoderGranularity ⁇ equals ⁇ allContiguousRBs ⁇ , then the DMRS resource is located within the REG (Resource Group) of the set of consecutive resource blocks in the CORESET that the terminal device attempts to decode the PDCCH. In other words, in Mapping Mode 2, the PDCCH DMRS resource is mapped to all REGs in the CORESET.
- REG Resource Group
- the terminal device searches for the PDCCH in the CORESET. This is done by continuously demodulating the PDCCH candidates (or the PDCCH candidate set) to attempt to detect the PDCCH. This process is called blind PDCCH detection.
- the PDCCH candidates or the PDCCH candidate set can include a set of CCEs that may exist in the PDCCH in the CORESET, including the starting position and number of CCEs.
- the specific CCEs can be determined by a search space function.
- the terminal device can determine the possible CCE aggregation level and the corresponding number of blind detections that the PDCCH may send by receiving the nrofCandidates parameter in the search space. Then, the terminal device can perform a decoding operation on each PDCCH candidate set in the PDCCH search space, and stop the blind detection process once decoding is successful.
- the terminal device receives the PDCCH through blind detection. That is, the terminal device needs to decode and perform CRC on each possible PDCCH in the PDCCH candidate set to detect whether there is a PDCCH sent to the terminal device. This process will result in a large power overhead.
- embodiments of this application can determine whether the target PDCCH of the terminal device is included in the PDCCH candidates by using a first sequence (such as a DMRS sequence) for demodulating PDCCH candidates.
- a first sequence such as a DMRS sequence
- the performance of the first sequence detection is better than that of PDCCH decoding (taking a DMRS sequence as an example, the performance of DMRS detection is approximately 1 dB better than that of PDCCH decoding).
- the first sequence detection can more reliably identify the presence of the PDCCH and reduce power consumption caused by PDCCH decoding.
- the terminal device can improve the accuracy of PDCCH detection while maintaining low power consumption.
- embodiments of this application can reduce or avoid blind decoding operations of the PDCCH, thereby achieving energy saving in the terminal device.
- the first sequence can be used to demodulate the PDCCH.
- the first sequence can be used to demodulate one or more PDCCH candidates, or in other words, the first sequence can be used to demodulate a set of PDCCH candidates, wherein a set of PDCCH candidates may include one or more PDCCH candidates.
- a first sequence can demodulate one PDCCH candidate.
- a first sequence can demodulate multiple PDCCH candidates.
- the multiple PDCCH candidates can be scrambled using the same radio network temporary identifier (RNTI) or different RNTIs.
- RNTI radio network temporary identifier
- the multiple PDCCH candidates can carry DCI of the same format or different formats.
- the multiple PDCCH candidates can carry DCI of the same size or different sizes.
- one or more of the aforementioned PDCCH candidates can be detected in a search space indicated by the network device (such as a public search space and/or a terminal device-specific search space).
- the first sequence can be used to determine whether one or more PDCCH candidates include the target PDCCH of the terminal device.
- the first sequence can be used to demodulate one or more PDCCHs and to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- the target PDCCH of the terminal device may refer to the PDCCH that the terminal device wants to receive (or the PDCCH that the terminal device expects), or the target PDCCH of the terminal device may refer to the PDCCH sent to the terminal device.
- the target PDCCH of the terminal device includes a dedicated PDCCH sent to that terminal device.
- the target PDCCH of terminal device A includes a dedicated PDCCH sent to terminal device A.
- the target PDCCH of the terminal device includes a PDCCH sent to a group of terminal devices (the group of terminal devices includes terminal device A).
- the target PDCCH of terminal device A includes a PDCCH sent to a group of terminal devices (the group of terminal devices includes terminal device A).
- the target PDCCH of the terminal device may include one of the following: a terminal device-specific PDCCH, a PDCCH corresponding to the terminal device group to which the terminal device belongs, a PDCCH for scheduling common information, a PDCCH carrying the target DCI format, or a PDCCH carrying the target DCI size.
- a terminal device-specific PDCCH refers to a PDCCH that is specifically sent for a particular terminal device, or in other words, a control channel specifically configured for a particular terminal device to send control information to that terminal device.
- a terminal device-specific PDCCH can also be understood or replaced as a dedicated PDCCH for the terminal device. In this way, Different terminal devices correspond to different PDCCHs.
- a terminal device-specific PDCCH can be scrambled using a terminal device-specific RNTI.
- the terminal device-specific PDCCH is detected in the terminal device-specific search space.
- the PDCCH for scheduling public information may include one or more of the following: PDCCH for scheduling paging information, PDCCH for scheduling system information, PDCCH for scheduling random access response information, etc.
- the PDCCH corresponding to the terminal device group to which the terminal device belongs, the PDCCH for scheduling common information, the PDCCH carrying the target DCI format, or the PDCCH carrying the target DCI size can be scrambled using a common RNTI.
- the RNTI corresponding to the common search space of the terminal device can be used for scrambling.
- the PDCCH corresponding to the terminal device group to which the terminal device belongs, the PDCCH for scheduling common information, the PDCCH carrying the target DCI format, or the PDCCH carrying the target DCI size are detected in the common search space of the terminal devices.
- the target PDCCH of a terminal device may include a PDCCH for scheduling paging information.
- the target PDCCH of the terminal device may include a PDCCH for scheduling random access response information.
- the target PDCCH of the terminal device may include a PDCCH carrying uplink grants, etc.
- the first sequence may be a DMRS sequence.
- the embodiments of this application are not limited thereto.
- the first sequence may be a sequence in a future communication system that has the same or similar function as a DMRS sequence.
- the first sequence corresponds to the target PDCCH.
- the terminal device can determine the presence of the terminal device's target PDCCH by detecting the first sequence, without needing to decode the PDCCH and perform CRC, thereby reducing blind detection of the PDCCH.
- the correspondence between the first sequence and the target PDCCH can be understood as the first sequence being a terminal device-specific sequence, meaning that different terminal devices correspond to different first sequences.
- the first sequence is configured at the terminal device level.
- the correspondence between the first sequence and the target PDCCH can be understood as follows: the first sequence is configured (designed) for a group of terminal devices, meaning that the first sequence is different for different terminal device groups. In other words, the first sequence is configured at the terminal device group level.
- a group of terminal devices may include a paging terminal device group.
- a group of terminal devices may include a group of terminal devices carrying the same DCI format.
- a group of terminal devices may include a group of terminal devices carrying the same DCI size, etc.
- the first sequence in this embodiment corresponds to the target PDCCH, which helps reduce or avoid blind decoding of PDCCH by terminal devices and achieves energy saving for terminal devices.
- the existing PDCCH DMRS sequence is initialized based on NID (see expressions (1) and (2) above), and NID is a cell common parameter. For all terminal devices in the cell, the initialization of the corresponding DMRS is the same.
- the terminal device detects DMRS, it can only determine that there is PDCCH transmission, but it needs to further decode the PDCCH to determine whether there is a target PDCCH for the terminal device.
- the first sequence can correspond to a specific terminal device or a group of terminal devices, which can narrow the scope of blind decoding of PDCCH by terminal devices and achieve energy saving for terminal devices.
- the first sequence may include one or more of the following: a sequence specific to the terminal device, a sequence corresponding to the common search space of the terminal device, or a sequence corresponding to the terminal device group to which the terminal device belongs.
- This application does not limit the generation method of the first sequence, as long as the first sequence can be used to determine whether one or more PDCCH candidates include the target PDCCH of the terminal device.
- the generation method of the first sequence is described below by way of example.
- the first sequence is generated based on a first parameter.
- the first parameter is a terminal device-specific parameter, or in other words, a terminal device-exclusive parameter.
- the first parameter is configured at the terminal device level. Therefore, different terminal devices will have different first parameters.
- the first sequence generated based on the first parameter is a terminal device-specific sequence, or in other words, the first sequence generated based on the first parameter is a terminal device-specific sequence. Therefore, different terminal devices will have different first sequences. Taking a DMRS sequence as an example, if the DMRS sequence is generated based on terminal device-specific parameters, then different terminal devices will have different DMRS sequences.
- the first sequence within a terminal device-specific search space, can be generated based on terminal device-specific parameters.
- the scheme of generating the first sequence based on terminal device-specific parameters can be applied to scenarios within a terminal device-specific search space.
- the first parameter is a parameter corresponding to a group of terminal devices, or in other words, the first parameter is configured at the granularity of a group of terminal devices. In this way, a group of terminal devices can correspond to one first parameter, and different groups of terminal devices can have different first parameters.
- the first parameter is a parameter corresponding to a group of terminal devices (i.e., the first parameter corresponding to a group of terminal devices) If the values are the same, then the first sequence is the sequence corresponding to a group of terminal devices. Therefore, different groups of terminal devices will have different first sequences. Taking the first sequence as a DMRS sequence as an example, if the DMRS sequence is generated based on parameters corresponding to a group of terminal devices, then different groups of terminal devices will have different DMRS sequences.
- the first sequence can be generated based on a set of parameters corresponding to a set of terminal devices. That is, the scheme of generating the first sequence based on parameters corresponding to a set of terminal devices can be applied to scenarios within the common search space of terminal devices.
- the first parameter may include one or more of the following: RNTI, information related to the DCI carried by the PDCCH.
- the first parameter may include an RNTI.
- the first parameter may include a terminal device-specific RNTI and/or an RNTI corresponding to the common search space of the terminal devices.
- a terminal device-specific RNTI as an example, different terminal devices have different RNTIs, therefore, the first sequence corresponding to different terminal devices is also different.
- an RNTI corresponding to the common search space of the terminal devices as an example, a group of terminal devices with the same RNTI can have the same first sequence, while a group of terminal devices with different RNTIs can have different first sequences.
- a terminal device-specific RNTI may include one or more of the following RNTIs: cell RNTI (C-RNTI), configured scheduling RNTI (CS-RNTI), modulation and coding scheme cell RNTI (MCS-C-RNTI), semi-persistent channel state information RNTI (SP-CSI-RNTI), sidelink RNTI (SL-RNTI), sidelink configured scheduling RNTI (SL-CS-RNTI), V2X RNTI (V-RNTI), sidelink positioning reference signal configured scheduling RNTI (SL-PRS-CS-RNTI), and network controlled repeater RNTI (NCR-RNTI).
- C-RNTI cell RNTI
- CS-RNTI configured scheduling RNTI
- MCS-C-RNTI modulation and coding scheme cell RNTI
- SP-CSI-RNTI semi-persistent channel state information RNTI
- SL-RNTI sidelink RNTI
- SL-CS-RNTI sidelink configured scheduling RNTI
- V-RNTI V2X RN
- the RNTI corresponding to the common search space of the terminal device may include one or more of the following: paging RNTI (P-RNTI), system information RNTI (SI-RNTI), random access RNTI (RA-RNTI), multimedia control channel RNTI (MCCH-RNTI), multicast MCCH-RNTI, group RNTI (G-RNTI), message B RNTI (MsgB-RNTI), temporary cell RNTI (TC-RNTI), group configured scheduling RNTI (G-CS-RNTI), and slot format indication RNTI.
- P-RNTI paging RNTI
- SI-RNTI system information RNTI
- RA-RNTI random access RNTI
- MCCH-RNTI multimedia control channel RNTI
- G-RNTI group RNTI
- MsgB-RNTI message B RNTI
- TC-RNTI temporary cell RNTI
- G-CS-RNTI group configured scheduling RNTI
- indicator RNTI SFI-RNTI
- interruption RNTI interrupt RNTI
- TPC-SRS-RNTI transmit power control sounding reference signal RNTI
- CI-RNTI CI-RNTI
- availability indicator RNTI AI-RNTI
- PS-RNTI power saving RNTI
- PEI-RNTI paging early indication RNTI
- cellDTRX-RNTI cell discontinuous transmission/reception RNTI
- the RNTI corresponding to the common search space of some terminal devices can correspond to the DCI format.
- SFI-RNTI can correspond to DCI format 2_0, where DCI format 2_0 can be used to carry time slot format information.
- INT-RNTI can correspond to DCI format 2_1, where DCI format 2_1 can be used to carry interrupted transmission indication information.
- TPC-SRS-RNTI can correspond to DCI format 2_3, where DCI format 2_3 can be used to carry SRS handover information.
- CI-RNTI can correspond to DCI format 2_4, where DCI format 2_4 can be used to carry uplink transmission cancellation information.
- AI-RNTI can correspond to DCI format 2_5, where DCI format 2_5 can be used to carry soft resource information.
- PS-RNTI can correspond to DCI format 2_6, where DCI format 2_6 can be used to carry power saving information.
- PEI-RNTI can correspond to DCI format 2_7, where DCI format 2_7 can be used to carry paging advance indication information.
- cellDTRX-RNTI can correspond to DCI format 2_9, where DCI format 2_9 can be used to carry DTX/DRX activation (deactivation) information.
- the first parameter may include information related to the DCI of the PDCCH bearer.
- the first parameter may include information related to the DCI of one or more PDCCH candidate bearers.
- the information related to the DCI carried by the PDCCH may include one or more of the following: DCI format, DCI size.
- the first sequence can be generated based on the DCI format and/or DCI size carried by the PDCCH. Taking the generation of the first sequence based on the DCI format carried by the PDCCH as an example, the first sequences corresponding to PDCCHs with different DCI formats are different, while the first sequences corresponding to PDCCHs with the same DCI format can be the same.
- the first sequences corresponding to PDCCHs with different DCI sizes are different, while the first sequences corresponding to PDCCHs with the same DCI size can be the same.
- This application does not limit the implementation method of how to generate the first sequence using the DCI format and/or DCI size.
- the first sequence can be generated using the number of the DCI format and/or the number of the DCI size.
- the first sequence may be generated based on a pseudo-random sequence.
- the pseudo-random sequence may be generated based on a first parameter. That is, generating the first sequence based on the first parameter may include generating the first sequence based on a pseudo-random sequence, and the pseudo-random sequence being generated based on the first parameter.
- the first sequence can be generated iteratively based on the pseudo-random sequence.
- the first sequence can be generated based on expression (3).
- c(i) is a pseudo-random sequence
- c(i) is generated based on the first parameter
- the embodiments of this application are not limited to this, as long as the pseudo-random sequence in the first sequence is generated based on the first parameter.
- the first sequence can be obtained by modifying expression (3).
- the first sequence can be generated based on expression (4).
- c(i) is a pseudo-random sequence
- c(i) is initialized based on the first parameter
- the pseudo-random sequence can be generated based on one or more of the following: the number of symbols in a time slot, the number of symbols in the time slot, the number of time slots in the radio frame, and the first parameter.
- the pseudo-random sequence can be initialized based on expression (5).
- c ⁇ sub>init ⁇ /sub> is the initial pseudo-random sequence.
- the number of symbols in a time slot where l is the OFDM symbol number within the time slot.
- N is the number of the intra-wireless time slot, and N1 is the first parameter.
- the embodiments of this application are not limited to this, as long as the generation of the pseudo-random sequence is related to the first parameter.
- the generation of the pseudo-random sequence can be obtained by modifying expression (5).
- the pseudo-random sequence can be initialized based on expression (6).
- c ⁇ sub>init ⁇ /sub> is the initial pseudo-random sequence.
- the number of symbols in a time slot where l is the OFDM symbol number within the time slot.
- N is the number of the intra-wireless time slot, and N1 is the first parameter.
- the first parameter can be 16 bits long, and its value range can be N ⁇ sub>1 ⁇ /sub> ⁇ ⁇ 0, 1, ..., 65535 ⁇ .
- the value range of the first parameter can also be other ranges.
- the first parameter can be 8 bits long, and its value range can be N ⁇ sub>1 ⁇ /sub> ⁇ ⁇ 0, 1, ..., 255 ⁇ .
- the first parameter can be 32 bits long, and its value range can be N ⁇ sub>1 ⁇ /sub> ⁇ ⁇ 0, 1, ..., 4294967295 ⁇ .
- the first parameter may be configured by the network device.
- the embodiments of this application are not limited to this.
- the first parameter may also be predefined by the protocol or determined by the terminal device according to certain rules.
- Example 1 The first sequence is a sequence specific to the terminal device.
- the first sequence is a terminal device-specific sequence; therefore, different terminal devices will correspond to different first sequences.
- the terminal device detects the first sequence, it can determine whether a PDCCH (Power Distribution Channel) is being sent to it, thus eliminating the need for blind PDCCH detection and achieving energy saving for the terminal device.
- PDCCH Power Distribution Channel
- the first sequence is generated based on terminal device-specific information.
- the first sequence is generated based on a terminal device-specific RNTI.
- the first sequence can also be generated based on information other than the terminal device-specific RNTI, and this information will vary depending on the terminal device.
- the first sequence is generated based on a pseudo-random sequence, which is determined based on terminal device-specific information. For example, this pseudo-random sequence is initialized based on a terminal device-specific RNTI.
- the pseudo-random sequence corresponding to the first sequence can be initialized based on the above expression (5), where the first parameter is the terminal device-specific RNTI.
- the terminal device-specific RNTI can be a 16-bit ID information.
- the value range of the terminal device-specific RNTI can be N 1 ⁇ ⁇ 0,1,...,65535 ⁇ .
- the terminal device-specific RNTI can also be an 8-bit or 32-bit ID information, etc.
- Example 2 The first sequence is the sequence corresponding to the common search space of the terminal device.
- the first sequence corresponds to the RNTI corresponding to the corresponding public search space type.
- the terminal device when the terminal device is in the public...
- the first sequence corresponds to the RNTI corresponding to the relevant common search space type. In this way, by detecting the first sequence, the terminal device can eliminate some PDCCH candidates, narrowing the scope of blind PDCCH detection and achieving energy saving for the terminal device.
- the first sequence is generated based on the RNTI corresponding to the public search space of the terminal device.
- the first sequence is generated based on a pseudo-random sequence, which is determined based on the RNTI corresponding to the common search space of the terminal device.
- the pseudo-random sequence is initialized based on the RNTI corresponding to the common search space of the terminal device.
- the pseudo-random sequence corresponding to the first sequence can be initialized based on the above expression (5), where the first parameter is the RNTI corresponding to the common search space of the terminal device.
- the RNTI corresponding to the common search space of the terminal device can be a 16-bit ID information.
- the value range of the RNTI corresponding to the common search space of the terminal device can be N 1 ⁇ ⁇ 0,1,...,65535 ⁇ .
- the RNTI corresponding to the common search space of the terminal device can also be an 8-bit or 32-bit ID information, etc.
- the first parameter can be other parameters configured by the network device besides RNTI.
- This first parameter can be a parameter specific to the terminal device (i.e., configured at the terminal device level) or a parameter corresponding to a group of terminal devices (e.g., configured at the group level).
- the network device and/or the terminal device can determine the first sequence based on the first parameter configured by the network device.
- This first sequence can be, for example, a sequence specific to the terminal device, a sequence corresponding to the common search space of the terminal devices, or a sequence corresponding to a group of terminal devices.
- Example 3 The first sequence is generated based on the relevant information of DCI carried by the PDCCH.
- the first sequence is generated based on the relevant information of the DCI carried by the PDCCH.
- the first sequence may be generated based on the DCI format and/or DCI size.
- the network device can generate a first sequence based on information related to the DCI carried by one or more PDCCH candidate bearers.
- the terminal device can detect the first sequence based on information related to the target DCI to determine whether a target PDCCH carrying the target DCI exists.
- the target DCI may include the DCI that the terminal device wants (expects) to receive.
- the network device can generate the first sequence based on the DCI format of one or more PDCCH candidate bearers.
- the terminal device can detect the first sequence based on the target DCI format to determine whether there is a target PDCCH carrying the target DCI format.
- the network device can generate the first sequence based on the DCI size of one or more PDCCH candidate bearers.
- the terminal device can detect the first sequence based on the target DCI size to determine whether there is a target PDCCH carrying the target DCI size.
- the network device can generate the first sequence based on the DCI format and DCI size of one or more PDCCH candidate bearers.
- the terminal device can detect the first sequence based on the target DCI format and target DCI size to determine whether there is a target PDCCH carrying the target DCI format and target DCI size.
- a network device may generate a first sequence based on information related to the DCI carried by one of the PDCCH candidates.
- the network device may generate a first sequence based on information related to the DCIs of multiple PDCCH candidate bearers from one or more PDCCH candidates.
- the one or more PDCCH candidate bearers may have the same DCI format and/or DCI size.
- the first sequence is generated based on a pseudo-random sequence, which is determined based on relevant information of the DCI carried by the PDCCH.
- the pseudo-random sequence is initialized based on the DCI format and/or DCI size carried by the PDCCH.
- the pseudo-random sequence corresponding to the first sequence can be initialized based on the above expression (5), where the first parameter in expression (5) is the DCI format and/or DCI size carried by the PDCCH.
- Embodiment 3 can be applied to the process of detecting PDCCHs carrying different DCI formats and/or DCI sizes in the same search space.
- the first sequence generated by Embodiment 3 can determine whether there is a target PDCCH carrying the target DCI format and/or target DCI size, thereby reducing blind detection of various DCI formats and/or DCI sizes, narrowing the scope of blind detection, and achieving energy saving of terminal devices.
- the resources of the first sequence may be located within the resources (such as REG) of one of the PDCCH candidates in one or more PDCCH candidates demodulated by the first sequence.
- the first sequence may be mapped to the resources of one of the PDCCH candidates in one or more PDCCH candidates demodulated by the first sequence.
- this application is not limited to this; for example, the resources of the first sequence may be located within REG in the set of consecutive resource blocks in the CORESET where the terminal device attempts to decode the PDCCH.
- the embodiments of this application do not limit the position of the first sequence.
- the first sequence can be located at any position in the PRB, such as on subcarriers 1, 5, and 9 in the PRB, or on subcarriers 2, 6, and 10 in the PRB, or on subcarriers 0, 3, 6, and 9 in the PRB, etc.
- the position of the first sequence can be varied to adapt to different performance requirements and deployment scenarios.
- This application does not limit the frequency domain density of the first sequence in its embodiments.
- one first sequence can be mapped to every four subcarriers.
- one first sequence can be mapped to every three subcarriers.
- one first sequence can be mapped to every six subcarriers, and so on.
- Increasing the frequency domain density of the first sequence is beneficial for improving its detection performance, while decreasing its frequency domain density is beneficial for reducing its overhead.
- the frequency domain density of the first sequence can be varied to adapt to different performance requirements and deployment scenarios. For example, a lower frequency domain density of the first sequence can be used when transmission overhead is high; a higher frequency domain density of the first sequence can be used when the detection performance of the first sequence is poor.
- the position and/or frequency domain density of the first sequence can be determined by the configuration of the network device.
- the embodiments of this application are not limited thereto; for example, the position and/or frequency domain density of the first sequence can be predefined by the protocol.
- Figure 6 is a flowchart illustrating a method for wireless communication provided in an embodiment of this application. The method shown in Figure 6 is described from the perspective of interaction between a terminal device and a network device, which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1.
- a network device which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1.
- step S620 the terminal device detects the first sequence.
- the first sequence can be used to demodulate one or more PDCCH candidates, and the first sequence can be used to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- step S620 may include: the terminal device detecting a first sequence based on the first parameter corresponding to the target PDCCH.
- the terminal device can detect a first sequence based on a terminal device-specific first parameter to determine whether one or more PDCCH candidates include a terminal device-specific PDCCH.
- the terminal device can detect the first sequence based on the first parameter corresponding to the terminal device group to determine whether one or more PDCCH candidates include the PDCCH corresponding to the terminal device group.
- the terminal device can detect a first sequence based on the first parameter corresponding to the terminal device group to determine whether one or more PDCCH candidates include a PDCCH with scheduling common information.
- the terminal device can detect a first sequence based on the P-RNTI to determine whether one or more PDCCH candidates include a paging PDCCH.
- the terminal device can detect a first sequence based on the SI-RNTI to determine whether one or more PDCCH candidates include a SIPDCCH.
- the terminal device can detect a first sequence based on the first parameter corresponding to the target DCI format to determine whether one or more PDCCH candidates include a PDCCH carrying the target DCI format.
- the terminal device can detect a first sequence based on the first parameter corresponding to DCI format 2_0 (e.g., the DCI format 2_0 number) to determine whether one or more PDCCH candidates include a PDCCH carrying DCI format 2_0.
- the terminal device can detect a first sequence based on the first parameter corresponding to DCI format 2_7 (e.g., the DCI format 2_7 number) to determine whether one or more PDCCH candidates include a PDCCH carrying DCI format 2_7.
- the first parameter corresponding to DCI format 2_7 e.g., the DCI format 2_7 number
- the terminal device can detect a first sequence based on a first parameter corresponding to the target DCI size to determine whether one or more PDCCH candidates include a PDCCH carrying the target DCI size.
- the terminal device can detect a first sequence based on a first parameter corresponding to a DCI size of 16 bits (e.g., a DCI size number of 16 bits) to determine whether one or more PDCCH candidates include a PDCCH carrying a DCI size of 16 bits.
- the terminal device can detect a first sequence based on a first parameter corresponding to a DCI size of 32 bits (e.g., a DCI size number of 32 bits) to determine whether one or more PDCCH candidates include a PDCCH carrying a DCI size of 32 bits.
- a first parameter corresponding to a DCI size of 32 bits e.g., a DCI size number of 32 bits
- the method shown in Figure 6 may include step S610.
- the network device sends a first sequence to the terminal device.
- the terminal device can then detect the first sequence.
- the method shown in FIG6 may include steps S630a and/or S630b.
- step S630a if one or more PDCCH candidates demodulated in the first sequence include the target PDCCH of the terminal device, the terminal device decodes and verifies the one or more PDCCH candidates.
- step S630b if one or more PDCCH candidates demodulated in the first sequence do not include the target PDCCH of the terminal device, the terminal device skips decoding and verifying the one or more PDCCH candidates.
- the terminal device skipping the decoding and verification of one or more PDCCH candidates can also be understood or replaced as: the terminal device does not need to decode and verify the one or more PDCCH candidates.
- the terminal device can obtain the RE where the PDCCH is located from other REs of the CCE in the PDCCH candidate, and decode and verify the PDCCH.
- This application does not limit the implementation method of the terminal device determining whether one or more PDCCH candidates include the target PDCCH of the terminal device based on the first sequence.
- the terminal device can detect the first sequence according to the first parameter. When a relevant peak is detected, the terminal device determines that the target PDCCH has been detected; otherwise, the terminal device determines that the target PDCCH has not been detected.
- the terminal device may detect a first sequence in the CCE corresponding to each of one or more PDCCH candidates, and when a relevant peak is detected, the terminal device determines that the target PDCCH has been detected.
- FIG. 7 An example of a terminal device determining a target PDCCH is given below with reference to Figure 7.
- the CORESET shown in Figure 7 contains two symbols, and REGs are mapped to four CCEs (CCE0-CCE3) in a non-interleaved manner.
- CCE0 and CCE1 are a PDCCH candidate.
- the terminal device first needs to determine the RE position of the first sequence in the REG of CCE0 and CCE1, and then perform correlation detection on the first sequence mapped to this RE position to determine whether the PDCCH candidate includes the target PDCCH.
- CCE0-CCE3 are a PDCCH candidate.
- the terminal device first needs to determine the RE position of the first sequence in the REG of CCE0-CCE3, and then perform correlation detection on the first sequence mapped to this RE position to determine whether the PDCCH candidate includes the target PDCCH.
- the terminal device needs to determine its corresponding CCE and REG, and perform relevant detection on the first sequence of REG mapping to determine whether the PDCCH candidate includes the target PDCCH.
- FIG 8 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application.
- the terminal device 800 shown in Figure 8 includes a detection module 810.
- the detection module 810 can be used to detect a first sequence, the first sequence being used to demodulate one or more PDCCH candidates, and the first sequence being used to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- the first sequence is generated based on a first parameter, wherein the first parameter is a parameter specific to the terminal device, or the first parameter is a set of parameters corresponding to the terminal device.
- the first parameter includes one or more of the following: RNTI; information related to the DCI of the one or more PDCCH candidate bearers.
- the RNTI includes one or more of the following: a terminal device-specific RNTI, or an RNTI corresponding to the terminal device's public search space.
- the relevant information of the DCI includes one or more of the following: DCI format, DCI size.
- the first sequence is generated based on a pseudo-random sequence, which is generated based on the first parameter.
- the first sequence is generated based on the following expression: Where r l (m) represents the first sequence on symbol l, c(i) is a pseudo-random sequence, and c(i) is initialized based on the first parameter.
- the pseudo-random sequence is initialized based on the following expression: Where c ⁇ sub>init ⁇ /sub> is the initial pseudo-random sequence. Let l represent the number of symbols in a time slot, and l represent the symbol number within the time slot. N is the number of the intra-wireless time slot, and N1 is the first parameter.
- the first parameter is configured by the network device.
- the detection module is further configured to: detect the first sequence based on the first parameter corresponding to the target PDCCH.
- the first sequence includes one or more of the following: a sequence specific to the terminal device, a sequence corresponding to the common search space of the terminal device, and a sequence corresponding to the terminal device group to which the terminal device belongs.
- the resources of the first sequence are located within the resources of one of the one or more PDCCH candidates.
- the terminal device further includes an execution module 820, configured to: decode and verify the one or more PDCCH candidates if the one or more PDCCH candidates include the target PDCCH of the terminal device; and/or skip decoding and verifying the one or more PDCCH candidates if the one or more PDCCH candidates do not include the target PDCCH of the terminal device.
- an execution module 820 configured to: decode and verify the one or more PDCCH candidates if the one or more PDCCH candidates include the target PDCCH of the terminal device; and/or skip decoding and verifying the one or more PDCCH candidates if the one or more PDCCH candidates do not include the target PDCCH of the terminal device.
- the target PDCCH includes one of the following: a PDCCH specific to the terminal device, a PDCCH corresponding to the terminal device group to which the terminal device belongs, a PDCCH for scheduling common information, a PDCCH carrying the target DCI format, or a PDCCH carrying the target DCI size.
- the detection module 810 may be a processor 1010.
- the terminal device 800 may also include a memory 1020 and a transceiver 1030, as shown in Figure 10.
- Figure 9 is a schematic diagram of the structure of a network device provided in an embodiment of this application.
- the network device 900 shown in Figure 9 includes a transmitting module 910.
- the sending module 910 can be used to send a first sequence to the terminal device, the first sequence being used to demodulate one or more PDCCH candidates, and the first sequence being used to determine whether the one or more PDCCH candidates include the target PDCCH of the terminal device.
- the first sequence is generated based on a first parameter, wherein the first parameter is a parameter specific to the terminal device, or the first parameter is a set of parameters corresponding to the terminal device.
- the first parameter includes one or more of the following: RNTI; information related to the DCI of the one or more PDCCH candidate bearers.
- the RNTI includes one or more of the following: a terminal device-specific RNTI, or an RNTI corresponding to the terminal device's public search space.
- the relevant information of the DCI includes one or more of the following: DCI format, DCI size.
- the first sequence is generated based on a pseudo-random sequence, which is generated based on the first parameter.
- the first sequence is generated based on the following expression: Where r l (m) represents the first sequence on symbol l, c(i) is a pseudo-random sequence, and c(i) is initialized based on the first parameter.
- the pseudo-random sequence is initialized based on the following expression: Where c ⁇ sub>init ⁇ /sub> is the initial pseudo-random sequence. Let l represent the number of symbols in a time slot, and l represent the symbol number within the time slot. N is the number of the intra-wireless time slot, and N1 is the first parameter.
- the first parameter is configured by the network device.
- the first sequence is detected based on the first parameter corresponding to the target PDCCH.
- the first sequence includes one or more of the following: a sequence specific to the terminal device, a sequence corresponding to the common search space of the terminal device, and a sequence corresponding to the terminal device group to which the terminal device belongs.
- the resources of the first sequence are located within the resources of one of the one or more PDCCH candidates.
- the target PDCCH includes one of the following: a PDCCH specific to the terminal device, a PDCCH corresponding to the terminal device group to which the terminal device belongs, a PDCCH for scheduling common information, a PDCCH carrying the target DCI format, or a PDCCH carrying the target DCI size.
- the transmitting module 910 can be a transceiver 1030.
- the network device 900 may also include a processor 1010 and a memory 1020, as shown in Figure 10.
- Figure 10 is a schematic structural diagram of a communication device according to an embodiment of this application.
- the dashed lines in Figure 10 indicate that the unit or module is optional.
- This device 1000 can be used to implement the methods described in the above method embodiments.
- the device 1000 can be a chip, a terminal device, or a network device.
- Apparatus 1000 may include one or more processors 1010.
- the processor 1010 may support apparatus 1000 in implementing the methods described in the preceding method embodiments.
- the processor 1010 may be a general-purpose processor or a special-purpose processor.
- the processor may be a central processing unit (CPU).
- the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- the general-purpose processor may be a microprocessor or any conventional processor.
- the apparatus 1000 may further include one or more memories 1020.
- the memories 1020 store a program that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the preceding method embodiments.
- the memories 1020 may be independent of the processor 1010 or integrated within the processor 1010.
- the device 1000 may also include a transceiver 1030.
- the processor 1010 can communicate with other devices or chips via the transceiver 1030.
- the processor 1010 can send and receive data with other devices or chips via the transceiver 1030.
- This application also provides a computer-readable storage medium for storing a program.
- This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.
- the application also provides a computer program product.
- the computer program product includes a program.
- This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.
- This application also provides a computer program.
- This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.
- the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship.
- a instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.
- B corresponding to A means that B is associated with A, and B can be determined based on A.
- determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and/or other information.
- correlate can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.
- the term “comprising” can refer to direct inclusion or indirect inclusion.
- “comprising” in the embodiments of this application can be replaced with “instructing” or “used to determine”.
- "A includes B” can be replaced with "A instructs B” or "A is used to determine B”.
- predefined or “preconfigured” can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices).
- predefined can refer to what is defined in the protocol.
- the "protocol” may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.
- the term "and/or” is merely a description of the relationship between related objects, indicating that three relationships can exist.
- a and/or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.
- the character "/" in this document generally indicates that the preceding and following related objects have an "or" relationship.
- the disclosed systems, apparatuses, and methods can be implemented in other ways.
- the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods.
- multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.
- the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
- the units described as separate components may or may not be physically separate.
- the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
- the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
- implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof.
- software When implemented using software, it can be implemented entirely or partially in the form of a computer program product.
- the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated.
- the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another.
- the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.
- the computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media.
- the available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state drives (SSDs)).
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- Mobile Radio Communication Systems (AREA)
Abstract
提供了一种用于无线通信的方法、终端设备和网络设备。该用于无线通信的方法包括:终端设备检测第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
Description
本申请涉及通信技术领域,并且更为具体地,涉及一种用于无线通信的方法、终端设备和网络设备。
某些通信系统(如新无线(new radio,NR)系统)中,终端设备通过盲检测的方式接收物理下行控制信道(physical downlink control channel,PDCCH),即通过对每个PDCCH候选集上可能存在的PDCCH进行解码和循环冗余校验(cyclic redundancy check,CRC),以检测是否存在发送给终端设备自己的PDCCH,这个过程会带来较大的功率开销。
发明内容
本申请提供一种用于无线通信的方法、终端设备和网络设备。下面对本申请涉及的各个方面进行介绍。
第一方面,提供了一种用于无线通信的方法,包括:终端设备检测第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
第二方面,提供了一种用于无线通信的方法,包括:网络设备向终端设备发送第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
第三方面,提供了一种终端设备,包括:检测模块,用于检测第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
第四方面,提供了一种网络设备,包括:发送模块,用于向终端设备发送第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
第五方面,提供了一种终端设备,包括处理器、存储器以及通信接口,所述存储器用于存储一个或多个计算机程序,所述处理器用于调用所述存储器中的计算机程序使得所述终端设备执行第一方面的方法中的部分或全部步骤。
第六方面,提供了一种网络设备,包括处理器、存储器以及通信接口,所述存储器用于存储一个或多个计算机程序,所述处理器用于调用所述存储器中的计算机程序使得所述网络设备执行第二方面的方法中的部分或全部步骤。
第七方面,本申请实施例提供了一种通信系统,该系统包括上述的终端设备和/或网络设备。在另一种可能的设计中,该系统还可以包括本申请实施例提供的方案中与该终端设备或网络设备进行交互的其他设备。
第八方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序使得计算机执行上述各个方面的方法中的部分或全部步骤。
第九方面,本申请实施例提供了一种计算机程序产品,其中,所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,所述计算机程序可操作来使计算机执行上述各个方面的方法中的部分或全部步骤。在一些实现方式中,该计算机程序产品可以为一个软件安装包。
第十方面,本申请实施例提供了一种芯片,该芯片包括存储器和处理器,处理器可以从存储器中调用并运行计算机程序,以实现上述各个方面的方法中所描述的部分或全部步骤。
本申请实施例中,终端设备可以通过检测用于解调PDCCH候选的第一序列来确定PDCCH候选中是否包括终端设备的目标PDCCH,有利于减少对PDCCH的盲解码,从而有利于减少因PDCCH解码产生的功耗,实现终端设备节能。
图1是可应用本申请实施例的无线通信系统的系统架构示例图。
图2是PDCCH搜索空间的示例图。
图3是REG到CCE的映射的一个示例图。
图4是REG到CCE的映射的另一个示例图。
图5是PDCCH DMRS的示例图。
图6是本申请实施例提供的用于无线通信的方法的流程示意图。
图7是基于第一序列确定目标PDCCH的一个示例图。
图8是本申请实施例提供的终端设备的结构示意图。
图9是本申请实施例提供的网络设备的结构示意图。
图10是本申请实施例提供的通信装置的示意性结构图。
通信系统架构
图1是可应用本申请实施例的无线通信系统100的系统架构示例图。该无线通信系统100可以包括网络设备110和终端设备120。网络设备110可以是与终端设备120通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备120进行通信。
图1示例性地示出了一个网络设备和两个终端设备,可选地,该无线通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例的技术方案可以应用于各种通信系统,例如:第五代(5th generation,5G)系统或新无线(new radio,NR)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)等。本申请提供的技术方案还可以应用于未来的通信系统,如第六代移动通信系统,又如卫星通信系统,等等。
本申请实施例中的终端设备也可以称为用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台(mobile station,MS)、移动终端(mobile terminal,MT)、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请实施例中的终端设备可以是指向用户提供语音和/或数据连通性的设备,可以用于连接人、物和机,例如具有无线连接功能的手持式设备、车载设备等。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备,虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。可选地,UE可以用于充当基站。例如,UE可以充当调度实体,其在V2X或D2D等中的UE之间提供侧行链路信号。比如,蜂窝电话和汽车利用侧行链路信号彼此通信。蜂窝电话和智能家居设备之间通信,而无需通过基站中继通信信号。
本申请实施例中的网络设备可以是用于与终端设备通信的设备,该网络设备也可以称为接入网设备或无线接入网设备,如网络设备可以是基站。本申请实施例中的网络设备可以是指将终端设备接入到无线网络的无线接入网(radio access network,RAN)节点(或设备)。基站可以广义的覆盖如下中的各种名称,或与如下名称进行替换,比如:节点B(NodeB)、演进型基站(evolved NodeB,eNB)、下一代基站(next generation NodeB,gNB)、中继站、传输点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、主站MeNB、辅站SeNB、多制式无线(MSR)节点、家庭基站、网络控制器、接入节点、无线节点、接入点(access point,AP)、传输节点、收发节点、基带单元(base band unit,BBU)、射频拉远单元(Remote Radio Unit,RRU)、有源天线单元(active antenna unit,AAU)、射频头(remote radio head,RRH)、中心单元(central unit,CU)、分布式单元(distributed unit,DU)、定位节点等。基站可以是宏基站、微基站、中继节点、施主节点或类似物,或其组合。基站还可以指用于设置于前述设备或装置内的通信模块、调制解调器或芯片。基站还可以是移动交换中心以及设备到设备D2D、车辆外联(vehicle-to-everything,V2X)、机器到机器(machine-to-machine,M2M)通信中承担基站功能的设备、6G网络中的网络侧设备、未来的通信系统中承担基站功能的设备等。基站可以支持相同或不同接入技术的网络。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
基站可以是固定的,也可以是移动的。例如,直升机或无人机可以被配置成充当移动基站,一个或多个小区可以根据该移动基站的位置移动。在其他示例中,直升机或无人机可以被配置成用作与另一基站通信的设备。
在一些部署中,本申请实施例中的网络设备可以是指CU或者DU,或者,网络设备包括CU和DU。gNB还可以包括AAU。
网络设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和卫星上。本申请实施例中对网络设备和终端设备所处的场景不做限定。
应理解,本申请中的通信设备的全部或部分功能也可以通过在硬件上运行的软件功能来实现,或者通过平台(例如云平台)上实例化的虚拟化功能来实现。
PDCCH的资源
PDCCH可以用于携带(或承载)DCI,以通过PDCCH将DCI发送给终端设备。根据PDCCH携带的DCI的格式的不同,网络设备可以向终端设备指示不同的控制信息,例如指示下行调度信息、上行调度信息、时隙格式等。
在一些实施例中,网络设备可以向终端设备指示PDCCH的资源(如时频资源),以便终端设备在指示的资源上检测PDCCH。以NR系统为例,网络设备可以向终端设备指示PDCCH的搜索空间(search space)和/或控制资源集(control resource set,CORESET),以便终端设备根据指示的搜索空间和/或CORESET对PDCCH进行检测。
在一些实施例中,PDCCH搜索空间可以用于指示检测PDCCH的时频资源。在一些实施例中,CORESET可以用于指示PDCCH在频域上占用的资源块(resource block,RB)和在时域上占用的正交频分复用(orthogonal frequency division multiplexing,OFDM)符号数等信息。
在一些实施例中,网络设备向终端设备指示的搜索空间可以包括公共搜索空间(common search space,CSS)和终端设备特定的(specific)搜索空间。在一些实施例中,终端设备特定的搜索空间也可以称为UE特定的搜索空间(UE-specific search space,USS)。
在一些实施例中,公共搜索空间可以包括PDCCH公共搜索空间,用于终端设备接收调度公共信息的PDCCH或者终端设备组对应的信息的PDCCH。
在一些实施例中,终端设备特定的搜索空间可以包括PDCCH终端设备特定的搜索空间,用于终端设备接收调度终端设备特定信息的PDCCH。
在一些实施例中,网络设备指示的PDCCH搜索空间配置中可以包括该PDCCH搜索空间对应的CORESET。
在一些实施例中,网络设备可以通过无线资源控制(radio resource control,RRC)信令(或称,RRC配置信息)向终端设备指示PDCCH搜索空间和/或CORESET的配置信息。
在一些实施例中,本申请实施例提及的搜索空间也可以称为搜索空间集(search space set)。
下面以NR系统为例,对PDCCH搜索空间和CORESET的配置信息进行介绍。
在NR系统中,PDCCH搜索空间的配置信息可以包括以下信息中的一种或多种:搜索空间标识(identifier,ID),CORESET ID,监听时隙周期和偏移,持续时间(duration),监听的时隙内的符号位置,PDCCH候选(PDCCH candidate(s)),搜索空间的类型。
搜索空间ID也可以称为搜索空间索引,可以用于识别对应的搜索空间配置。在NR系统中,在每个带宽部分(bandwidth part,BWP)上最多可以配置10个搜索空间,不同搜索空间对应的搜索空间ID不同。
CORESET ID用于指示CORESET配置的ID,或者说,CORESET ID用于指示和该搜索空间关联的CORESET。
监听时隙周期和偏移用于指示监听的时隙的周期以及在周期内的偏移,或者说,监听时隙周期和偏移可以用于指示该搜索空间的周期以及在周期内的偏移。目前NR系统支持的周期包括1、2、4、5、8、10、16、20、40、80、160、320、640、1280、2560个时隙。在一些实施例中,监听时隙周期和偏移例如可以通过参数monitoringSlotPeriodicityAndOffset来指示。
持续时间可以用于指示终端设备在PDCCH搜索空间周期内连续监听的时隙个数。
监听的时隙内的符号位置可以用于指示在PDCCH监听的时隙内监听的CORESET的第一个符号的位置。在一些实施例中,监听的时隙内的符号例如可以通过参数monitoringSymbolsWithinSlot来指示。
PDCCH候选可以用于指示PDCCH候选的配置信息,例如,指示PDCCH候选的数量。
搜索空间的类型可以用于指示该PDCCH搜索空间是公共搜索空间还是终端设备特定的搜索空间。
可以看出,搜索空间的配置信息可以包括检测周期、时隙偏移、时隙数量、时隙内的符号位置等信息。为了便于理解,下面结合图2给出PDCCH搜索空间的一个示例。如图2所示,该PDCCH搜索空间的检测周期为10个时隙,时隙偏移为5个时隙,时隙数量为2个时隙,时隙内的符号位置的确定需要结合CORESET ID对应的CORESET配置信息确定。以CORESET ID对应的CORESET包含两个符号,因此,在监听时隙内监听两个CORESET的符号集合,在时隙内的第一个符号位置是时隙内的符号
0和7。
在NR系统中,PDCCH的CORESET的配置信息可以包括以下信息中的一种或多种:CORESET ID,频域资源,持续时间(duration),资源映射方式,预编码粒度。
CORESET ID可以用于指示CORESET的编号,不同CORESET对应的CORESET ID不同。在NR系统中,CORESET的编号的取值为0-11,其中CORESET 0为广播消息中指示的CORESET,RRC配置信息中的CORESET ID的取值范围为1-11。
频域资源可以用于指示CORESET频域资源,即指示CORESET包含的RB。在一些实施例中,频域资源例如可以通过参数frequencyDomainResources来指示。
持续时间可以用于指示CORESET的连续符号数。在一些实施例中,持续时间的取值范围包括{1,2,3}。
资源映射方式可以用于指示资源映射方式为交织映射还是非交织映射。在一些实施例中,资源映射方式例如可以通过参数cce-REG-MappingType来指示。
预编码粒度可以用于指示PDCCH的解调参考信号(demodulation reference signal,DMRS)的预编码粒度是宽带预编码还是窄带预编码。在一些实施例中,预编码粒度例如可以通过参数precoderGranularity来指示。
PDCCH的结构
CORESET中的时频资源可以以资源单元组(resource element group,REG)为单位。一个REG可以包括时域上的一个OFDM符号和频域上的一个物理资源块(physical resource block,PRB),共12个资源单元(resource element,RE)。
在一些实施例中,在CORESET内,可以按照先时域后频域的方式为REG编号。
在一些实施例中,若干个REG可以组成一个REG束(REG bundle)。在一些实施例中,REG束可以组成信道控制单元(channel control element,CCE),其中,每个CCE包含6个REG。
在一些实施例中,一个PDCCH或PDCCH候选是由CCE组成的,组成PDCCH的CCE的个数称为聚合级别。以NR系统为例,NR中支持的CCE聚合级别包括1、2、4、8、16,即一个PDCCH或PDCCH候选的资源可以由1、2、4、8、16个CCE组成。
在一些实施例中,CORESET中的REG采用先时域后频域的顺序映射到CCE。在一些实施例中,REG到CCE的映射过程与资源映射方式以及CORESET的持续时间有关。下面结合图3和图4给出REG映射到CCE的示例。
图3是REG以非交织的方式映射到CCE的示例。如图3所示,在CORESET的持续时间不同的情况下,REG映射得到的CCE是不同的。例如,当CORESET的持续时间为1个符号时,REG映射得到的一个CCE由时域上的1个符号和频域上的6个RB组成;当CORESET的持续时间为2个符号时,REG映射得到的一个CCE由时域上的2个符号和频域上的3个RB组成;当CORESET的持续时间为3个符号时,REG映射得到的一个CCE由时域上的3个符号和频域上的2个RB组成。
图4是REG以交织的方式映射到CCE的示例。在图4的示例中,CORESET的持续时间是3个符号,3个REG组成一个REG束。
PDCCH DMRS
在一些实施例中,PDCCH的CCE中可以包括DMRS,该DMRS用于解调PDCCH。在一些实施例中,PDCCH DMRS固定在每个PRB中的子载波1,5,9上,每4个子载波映射一个DMRS。下面结合图5给出PDCCH DMRS的一个示例。在图5的示例中,CORESET包含2个符号和2个PRB,对于每个符号而言,DMRS位于该符号对应的两个PRB中的每个PRB的子载波1,5,9上。
在NR系统中,OFDM符号l上的PDCCH DMRS的序列如表达式(1)所示。
其中,c(i)为伪随机序列。c(i)的初始化如表达式(2)所示。
其中,为一个时隙中的符号的个数,l为时隙内的OFDM符号的编号,为无线帧内时隙的编号,NID是根据高层配置参数pdcch-DMRS-ScramblingID确定的,NID∈{0,1,…,65535}。
需要说明的是,pdcch-DMRS-ScramblingID参数用于指示NID。如果该参数没有配置,其中,是该服务小区配置的物理小区ID(physCellId),物理小区ID可以用于识别和区分不同的小区。
PDCCH DMRS可以包括不同的映射模式。以NR系统为例,NR系统可以支持映射模式1和映射模式2这两种PDCCH DMRS的映射模式。
映射模式1:如果高层参数precoderGranularity等于sameAsREG-bundle,则DMRS资源位于构成终端设备尝试解码的PDCCH的REG内。也就是说,在映射模式1中,PDCCH DMRS资源映射到PDCCH候选集中的一个PDCCH候选所在的REG内。
映射模式2:如果高层参数precoderGranularity等于allContiguousRBs,则DMRS资源位于CORESET中终端设备尝试解码PDCCH的连续资源块集合内的REG内。也就是说,在映射模式2中,PDCCH DMRS资源映射到CORESET中的所有的REG内。
PDCCH盲检测
终端设备接收PDCCH的过程中,终端设备在CORESET上搜索PDCCH,即通过不停的对PDCCH候选(或者,PDCCH候选集)进行解调来尝试检测PDCCH,该过程称为PDCCH盲检测。PDCCH候选或PDCCH候选集可以包括CORESET中PDCCH可能存在的一组CCE,包括CCE的起始位置和数量,具体的CCE可以通过搜索空间函数来确定。
在一些实施例中,终端设备可以通过接收搜索空间中的nrofCandidates参数来确定PDCCH可能发送的CCE聚合级别以及对应的盲检的次数。之后,终端设备可以对PDCCH搜索空间中的每个PDCCH候选集进行解码操作,一旦解码成功会停止盲检测流程。
如上文所述,终端设备是通过盲检测的方式接收PDCCH的,即终端设备需要对每个PDCCH候选集上可能存在的PDCCH进行解码和CRC,以检测是否存在发送给终端设备自己的PDCCH,这个过程会带来较大的功率开销。
针对上述问题,本申请实施例可以通过用于解调PDCCH候选的第一序列(如DMRS序列)来确定PDCCH候选中是否包括终端设备的目标PDCCH,有利于减少对PDCCH的盲解码,从而有利于减少因PDCCH解码产生的功耗,实现终端设备节能。这是因为,第一序列检测的性能比PDCCH解码的性能要好(以第一序列为DMRS序列为例,DMRS检测的性能比PDCCH解码的性能大约好1分贝(dB)),这意味着第一序列检测可以更可靠的识别PDCCH的存在,且减少因PDCCH解码产生的功耗。如此一来,终端设备可以在保持低功耗的同时,提高PDCCH检测的准确性。也就是说,本申请实施例可以减少或避免对PDCCH的盲解码操作,从而可以实现终端设备节能。
下面对第一序列进行详细介绍。
在本申请实施例中,第一序列可以用于解调PDCCH。例如,第一序列可以用于解调一个或多个PDCCH候选,或者说,第一序列可以用于解调PDCCH候选集,其中,一个PDCCH候选集可以包括一个或多个PDCCH候选。作为一个示例,一个第一序列可以解调一个PDCCH候选。作为另一个示例,一个第一序列可以解调多个PDCCH候选。
本申请实施例对第一序列解调的多个PDCCH候选不做具体限定。例如,该多个PDCCH候选可以使用相同的无线网络临时标识(radio network temporary identifier,RNTI)加扰,也可以使用不同的RNTI加扰。又例如,该多个PDCCH候选可以承载相同DCI格式(format)的DCI,也可以承载不同DCI格式的DCI。又例如,该多个PDCCH候选可以承载相同DCI大小(size)的DCI,也可以承载不同DCI大小的DCI。
在一些实施例中,上述一个或多个PDCCH候选可以在网络设备指示的搜索空间(如公共搜索空间和/或终端设备特定的搜索空间)上检测到。
在本申请实施例中,第一序列可以用于确定一个或多个PDCCH候选是否包括终端设备的目标PDCCH。例如,第一序列可以用于解调一个或多个PDCCH,且用于确定该一个或多个PDCCH候选是否包括终端设备的目标PDCCH。
在一些实施例中,终端设备的目标PDCCH可以是指终端设备想要接收的PDCCH(或称,终端设备期待的PDCCH),或者说,终端设备的目标PDCCH可以是指发送给终端设备的PDCCH。
本申请实施例对终端设备的目标PDCCH不做具体限定。在一些实施例中,终端设备的目标PDCCH包括发送给该终端设备的专属PDCCH,以终端设备为终端设备A为例,终端设备A的目标PDCCH包括发送给终端设备A的专属PDCCH。在一些实施例中,终端设备的目标PDCCH包括发送给一组终端设备(该一组终端设备包括该终端设备)的PDCCH,以终端设备为终端设备A为例,终端设备A的目标PDCCH包括发送给一组终端设备(该一组终端设备包括终端设备A)的PDCCH。
示例性地,终端设备的目标PDCCH可以包括以下中的一种:终端设备特定的PDCCH,终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
在一些实施例中,终端设备特定的PDCCH是指该PDCCH是专门为某个特定的终端设备发送的,或者说,该PDCCH是专门为某个特定的终端设备配置的控制信道,用于向该终端设备发送控制信息。在一些实施例中,终端设备特定的PDCCH也可以理解或替换为终端设备的专用PDCCH。如此一来,
不同终端设备对应的PDCCH不同。
在一些实施例中,终端设备特定的PDCCH可以使用终端设备特定的RNTI进行加扰。
在一些实施例中,终端设备特定的PDCCH是在终端设备特定的搜索空间检测的。
在一些实施例中,调度公共信息的PDCCH可以包括以下中的一种或多种:调度寻呼信息的PDCCH,调度系统信息的PDCCH,调度随机接入响应信息的PDCCH等。
在一些实施例中,终端设备所属的终端设备组对应的PDCCH、调度公共信息的PDCCH、承载目标DCI格式的PDCCH或承载目标DCI大小的PDCCH可以使用公共RNTI进行加扰,例如,可以使用终端设备的公共搜索空间对应的RNTI加扰。
在一些实施例中,终端设备所属的终端设备组对应的PDCCH、调度公共信息的PDCCH、承载目标DCI格式的PDCCH或承载目标DCI大小的PDCCH是在终端设备的公共搜索空间检测的。
为了便于理解,下面给出终端设备的目标PDCCH的几个示例。以终端设备处于空闲态为例,终端设备的目标PDCCH可以包括调度寻呼信息的PDCCH。以终端设备发起随机接入为例,终端设备发起随机接入之后,终端设备的目标PDCCH可以包括调度随机接入响应信息的PDCCH。以终端设备有上行数据等待发送为例,终端设备的目标PDCCH可以包括承载上行授权的PDCCH等。
在一些实施例中,第一序列可以是DMRS序列。不过本申请实施例并不限定于此,例如,第一序列可以是未来的通信系统中的与DMRS序列功能相同或相似的序列。
在一些实施例中,第一序列与目标PDCCH对应。如此一来,终端设备可以通过检测第一序列确定是否存在终端设备的目标PDCCH,而不需要解码PDCCH并进行CRC来确定,从而可以减少PDCCH的盲检测。
以目标PDCCH包括终端设备特定的PDCCH为例,第一序列与目标PDCCH对应可以理解为,第一序列可以是终端设备特定的序列,即不同的终端设备对应的第一序列不同。或者说,第一序列是以终端设备为粒度来配置的。
以目标PDCCH包括终端设备所属的终端设备组对应的PDCCH、调度公共信息的PDCCH、承载目标DCI格式的PDCCH或承载目标DCI大小的PDCCH为例,第一序列与目标PDCCH对应可以理解为,第一序列是针对一组终端设备配置(设计)的,即不同的终端设备组对应的第一序列不同。或者说,第一序列是以终端设备组为粒度来配置的。
本申请实施例对一组终端设备不做限定。例如,一组终端设备可以包括寻呼终端设备组。又例如,一组终端设备可以包括承载同一DCI格式的一组终端设备。又例如,一组终端设备可以包括承载同一DCI大小的一组终端设备等。
相比现有的PDCCH DMRS序列的设计,本申请实施例中的第一序列与目标PDCCH对应,有利于减少或避免终端设备盲解码PDCCH,实现终端设备节能。这是因为,现有的PDCCH DMRS的序列是根据NID初始化的(参见上文介绍的表达式(1)和表达式(2)),而NID是一个小区公共参数,对整个小区内的终端设备来说,其对应的DMRS的初始化是相同的,如此一来,终端设备检测到DMRS时仅能确定存在PDCCH传输,但需要进一步解码PDCCH确定是否存在终端设备的目标PDCCH。而本申请实施例中,第一序列可以与特定的终端设备对应或者与一组终端设备对应,能够缩小终端设备盲解码PDCCH的范围,实现终端设备节能。
本申请实施例对第一序列的类型不做限定。示例性地,第一序列可以包括以下中的一种或多种:终端设备特定的序列,终端设备的公共搜索空间对应的序列,终端设备所属的终端设备组对应的序列。
本申请实施例对第一序列的生成方式不做限定,只要第一序列能够用于确定一个或多个PDCCH候选是否包括终端设备的目标PDCCH即可。为了便于理解,下面示例性介绍第一序列的生成方式。
在一些实施例中,第一序列是基于第一参数生成的。
在一些实施例中,第一参数是终端设备特定的参数,或者说,第一参数是终端设备专属的参数。换句话说,第一参数是以终端设备为粒度来配置的。如此一来,不同终端设备对应的第一参数不同。
在一些实施例中,如果第一参数是终端设备特定的参数,则基于第一参数生成的第一序列是终端设备特定的序列,或者说,基于第一参数生成的第一序列是终端设备专属的序列。如此一来,不同终端设备对应的第一序列不同。以第一序列为DMRS序列为例,如果DMRS序列是基于终端设备特定的参数生成的,则不同终端设备对应的DMRS序列不同。
在一些实施例中,在终端设备特定的搜索空间中,第一序列可以基于终端设备特定的参数生成。换句话说,第一序列基于终端设备特定的参数生成的方案可以应用于终端设备特定的搜索空间的场景。
在一些实施例中,第一参数是一组终端设备对应的参数,或者说,第一参数是以终端设备组为粒度来配置的。如此一来,一组终端设备可以对应一个第一参数,不同的终端设备组对应的第一参数不同。
在一些实施例中,如果第一参数是一组终端设备对应的参数(即,一组终端设备对应的第一参数的
取值相同),则第一序列是一组终端设备对应的序列。如此一来,不同终端设备组对应的第一序列不同。以第一序列为DMRS序列为例,如果DMRS序列是基于一组终端设备对应的参数生成,则不同终端设备组对应的DMRS序列不同。
在一些实施例中,在终端设备的公共搜索空间中,第一序列可以基于一组终端设备对应的参数生成。也就是说,第一序列基于一组终端设备对应的参数生成的方案可以应用于终端设备的公共搜索空间的场景。
本申请实施例对第一参数不做具体限定,只要该参数是终端设备特定的参数或者是一组终端设备对应的参数,且该参数能够用于生成第一序列即可。示例性地,第一参数可以包括以下中的一种或多种:RNTI,PDCCH承载的DCI的相关信息。
作为一种实现方式,第一参数可以包括RNTI,例如,第一参数可以包括终端设备特定的RNTI和/或终端设备的公共搜索空间对应的RNTI。以第一参数包括终端设备特定的RNTI为例,不同终端设备对应的RNTI不同,因此,不同终端设备对应的第一序列也不同。以第一参数包括终端设备的公共搜索空间对应的RNTI为例,具有相同RNTI的一组终端设备对应的第一序列可以相同,具有不同RNTI的一组终端设备对应的第一序列可以不同。
本申请实施例对终端设备特定的RNTI不做限定。示例性地,终端设备特定的RNTI可以包括以下RNTI中的一种或多种:小区RNTI(cell-RNTI,C-RNTI),配置调度RNTI(configured scheduling RNTI,CS-RNTI),调制和编码方案小区RNTI(modulation and coding scheme cell RNTI,MCS-C-RNTI),半静态信道状态信息RNTI(semi-persistent channel state information,SP-CSI-RNTI),侧行RNTI(sidelink RNTI,SL-RNTI),侧行配置调度RNTI(sidelink configured scheduling RNTI,SL-CS-RNTI),V2X RNTI(V-RNTI),侧行定位参考信号配置调度RNTI(sidelink positioning reference signal configured scheduling RNTI,SL-PRS-CS-RNTI),网络控制中继RNTI(network controlled repeater RNTI,NCR-RNTI)。
本申请实施例对终端设备的公共搜索空间对应的RNTI不做限定。示例性地,终端设备的公共搜索空间对应的RNTI可以包括以下中的一种或多种:寻呼RNTI(paging RNTI,P-RNTI),系统信息RNTI(systeminformation RNTI,SI-RNTI),随机接入RNTI(random access RNTI,RA-RNTI),多播控制信道RNTI(multimedia control channel RNTI,MCCH-RNTI),多播MCCH-RNTI(multicast-MCCH-RNTI),组RNTI(group RNTI,G-RNTI),消息B RNTI(message B RNTI,MsgB-RNTI),临时小区RNTI(temporary cell RNTI,TC-RNTI),组配置调度RNTI(group configured scheduling RNTI,G-CS-RNTI),时隙格式指示RNTI(slot format indicator RNTI,SFI-RNTI),中断RNTI(interruption RNTI,INT-RNTI),发送功率控制探测参考信号RNTI(transmit power control sounding reference signal RNTI,TPC-SRS-RNTI),取消指示RNTI(cancellation indication RNTI,CI-RNTI),可用性指示RNTI(availability indicator RNTI,AI-RNTI),节能RNTI(power saving RNTI,PS-RNTI),寻呼提前指示RNTI(paging early indication RNTI,PEI-RNTI),小区不连续发送/接收RNTI(cell discontinuous transmission/reception RNTI,cellDTRX-RNTI)。
需要说明的是,在一些实施例中,有些终端设备的公共搜索空间对应的RNTI可以与DCI格式对应。作为一个示例,SFI-RNTI可以与DCI格式2_0对应,其中,DCI格式2_0可以用于承载时隙格式信息。作为一个示例,INT-RNTI可以与DCI格式2_1对应,其中,DCI格式2_1可以用于承载中断传输指示信息。作为一个示例,TPC-SRS-RNTI可以与DCI格式2_3对应,其中,DCI格式2_3可以用于承载SRS切换信息。作为一个示例,CI-RNTI可以与DCI格式2_4对应,其中,DCI格式2_4可以用于承载上行传输取消信息。作为一个示例,AI-RNTI可以与DCI格式2_5对应,其中,DCI格式2_5可以用于承载软资源信息。作为一个示例,PS-RNTI可以与DCI格式2_6对应,其中,DCI格式2_6可以用于承载节能信息。作为一个示例,PEI-RNTI可以与DCI格式2_7对应,其中,DCI格式2_7可以用于承载寻呼提前指示信息。作为一个示例,cellDTRX-RNTI可以与DCI格式2_9对应,其中,DCI格式2_9可以用于承载DTX/DRX激活(去激活)信息。
作为一种实现方式,第一参数可以包括PDCCH承载的DCI的相关信息。例如,第一参数可以包括一个或多个PDCCH候选承载的DCI的相关信息。
本申请实施例对PDCCH承载的DCI的相关信息不做限定。示例性地,PDCCH承载的DCI的相关信息可以包括以下中的一种或多种:DCI格式,DCI大小。如此一来,第一序列可以基于PDCCH承载的DCI格式和/或DCI大小生成,以第一序列基于PDCCH承载的DCI格式生成为例,不同DCI格式的PDCCH对应的第一序列不同,相同DCI格式的PDCCH对应的第一序列可以相同。以第一序列基于PDCCH承载的DCI大小生成为例,不同DCI大小的PDCCH对应的第一序列不同,相同DCI大小的PDCCH对应的第一序列可以相同。
本申请实施例对如何利用DCI格式和/或DCI大小生成第一序列的实现方式不做限定。示例性地,可以利用DCI格式的编号和/或DCI大小的编号来生成第一序列。
在一些实施例中,第一序列可以是基于伪随机序列生成的。在一些实施例中,该伪随机序列可以是基于第一参数生成的。也就是说,第一序列基于第一参数生成可以包括,第一序列是基于伪随机序列生成的,且该伪随机序列是基于第一参数生成的。
本申请实施例对如何基于伪随机序列生成第一序列的实现方式不做限定。作为一个示例,第一序列可以基于伪随机序列的迭代生成。作为一种可能的实现方式,第一序列可以基于表达式(3)生成。
其中,c(i)为伪随机序列,c(i)是基于第一参数生成的。
不过本申请实施例并不限定于此,只要第一序列中的伪随机序列是基于第一参数生成的即可。例如,第一序列可以是在表达式(3)的基础上变形得到的。作为一个示例,第一序列可以基于表达式(4)生成。
其中,c(i)为伪随机序列,c(i)是基于第一参数初始化的。
本申请实施例对如何基于第一参数生成(比如,初始化)上述伪随机序列的实现方式不做限定。示例性地,伪随机序列可以基于以下中的一种或多种生成:一个时隙中的符号的个数,时隙内的符号的编号,无线帧内时隙的编号,第一参数。
作为一种可能的实现方式,伪随机序列可以基于表达式(5)进行初始化。
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的OFDM符号的编号,为无线帧内时隙的编号,N1为第一参数。
不过本申请实施例并不限定于此,只要伪随机序列的生成与第一参数有关即可。例如,伪随机序列的生成可以是在表达式(5)的基础上变形得到的。作为一个示例,伪随机序列可以基于表达式(6)初始化。
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的OFDM符号的编号,为无线帧内时隙的编号,N1为第一参数。
本申请实施例对第一参数的取值范围不做限定。作为一个示例,第一参数可以为16位长的信息,第一参数的取值范围可以为N1∈{0,1,…,65535}。当然,第一参数的取值范围也可以为其他范围。比如,第一参数可以为8位长的信息,第一参数的取值范围可以为N1∈{0,1,…,255}。又比如,第一参数可以为32位长的信息,第一参数的取值范围可以为N1∈{0,1,…,4294967295}。
在一些实施例中,第一参数可以是网络设备配置的。不过本申请实施例并不限定于此,例如,第一参数也可以是协议预定义的,或者终端设备根据一定规则确定的。
为了便于理解,下面给出几个实施例对第一序列的生成方式进行介绍。
实施例1:第一序列为终端设备特定的序列
在实施例1中,第一序列是终端设备特定的序列,因此,不同的终端设备会对应不同的第一序列。如此一来,终端设备在检测第一序列时,就可以确定是否存在发送给终端设备自己的PDCCH,从而不需要盲检测PDCCH,实现终端设备节能。
在一些实施例中,第一序列是基于终端设备特定的信息生成的。例如,第一序列是基于终端设备特定的RNTI生成的。当然,第一序列也可以是基于除终端设备特定的RNTI之外的信息生成的,不同该终端设备对应的该信息不同。
作为一种实现方式,第一序列是基于伪随机序列生成的,该伪随机序列是基于终端设备特定的信息确定的。例如,该伪随机序列是基于终端设备特定的RNTI初始化的。
作为一个示例,第一序列对应的伪随机序列可以是基于上述表达式(5)初始化的,表达式(5)中的第一参数为终端设备特定的RNTI。
在一些实施例中,终端设备特定的RNTI可以为16位长的ID信息。例如,终端设备特定的RNTI的取值范围可以为N1∈{0,1,…,65535}。当然,终端设备特定的RNTI也可以为8位长或者32位长的ID信息等。
实施例2:第一序列为终端设备的公共搜索空间对应的序列
在实施例2中,第一序列与相应的公共搜索空间类型对应的RNTI对应。或者说,当终端设备在公
共搜索空间中搜索PDCCH时,第一序列与相应的公共搜索空间类型对应的RNTI对应。如此一来,终端设备通过检测第一序列,可以排除一部分PDCCH候选,缩小PDCCH盲检测的范围,实现终端设备节能。
在一些实施例中,第一序列是基于终端设备的公共搜索空间对应的RNTI生成的。
作为一种实现方式,第一序列是基于伪随机序列生成的,该伪随机序列是基于终端设备的公共搜索空间对应的RNTI确定的。例如,该伪随机序列是基于终端设备的公共搜索空间对应的RNTI初始化的。
作为一个示例,第一序列对应的伪随机序列可以是基于上述表达式(5)初始化的,表达式(5)中的第一参数为终端设备的公共搜索空间对应的RNTI。
在一些实施例中,终端设备的公共搜索空间对应的RNTI可以为16位长的ID信息。例如,终端设备的公共搜索空间对应的RNTI的取值范围可以为N1∈{0,1,…,65535}。当然,终端设备的公共搜索空间对应的RNTI也可以为8位长或者32位长的ID信息等。
需要说明的是,实施例1和实施例2都是基于RNTI对第一序列进行初始化的。但本申请实施例并不限定于此,例如,第一参数可以是网络设备配置的除了RNTI之外的其他参数,该第一参数可以是终端设备特有的参数(即,以终端设备为粒度配置的),也可以是终端设备组对应的参数(例如,是以一组终端设备为粒度配置的)。如此一来,网络设备和/或终端设备可以基于网络设备配置的第一参数确定第一序列,该第一序列例如可以是终端设备特定的序列,或者可以是终端设备的公共搜索空间对应的序列,又或者可以是终端设备组对应的序列。
实施例3:第一序列是基于PDCCH承载的DCI的相关信息生成的
在实施例3中,第一序列是基于PDCCH承载的DCI的相关信息生成的。例如,第一序列可以基于DCI格式和/或DCI大小生成。
在实施例3中,网络设备可以基于一个或多个PDCCH候选承载的DCI的相关信息生成第一序列。对应地,终端设备在检测PDCCH候选时,可以基于目标DCI的相关信息来检测第一序列,以确定是否存在承载目标DCI的目标PDCCH。其中,目标DCI可以包括终端设备想要(期待)接收的DCI。
以第一序列基于DCI格式生成为例,网络设备可以基于一个或多个PDCCH候选承载的DCI格式生成第一序列。对应地,终端设备可以基于目标DCI格式来检测第一序列,以确定是否存在承载目标DCI格式的目标PDCCH。
以第一序列基于DCI大小生成为例,网络设备可以基于一个或多个PDCCH候选承载的DCI大小生成第一序列。对应地,终端设备可以基于目标DCI大小来检测第一序列,以确定是否存在承载目标DCI大小的目标PDCCH。
以第一序列基于DCI格式和DCI大小生成为例,网络设备可以基于一个或多个PDCCH候选承载的DCI格式和DCI大小生成第一序列。对应地,终端设备可以基于目标DCI格式和目标DCI大小来检测第一序列,以确定是否存在承载目标DCI格式和目标DCI大小的目标PDCCH。
在一些实施例中,网络设备可以基于一个或多个PDCCH候选中的一个PDCCH候选承载的DCI的相关信息来生成第一序列。
在一些实施例中,网络设备可以基于一个或多个PDCCH候选中的多个PDCCH候选承载的DCI的相关信息来生成第一序列。例如,该一个或多个PDCCH候选承载的DCI格式和/或DCI大小相同。
作为一种实现方式,第一序列是基于伪随机序列生成的,该伪随机序列是基于PDCCH承载的DCI的相关信息确定的。例如,该伪随机序列是基于PDCCH承载的DCI格式和/或DCI大小初始化的。
作为一个示例,第一序列对应的伪随机序列可以是基于上述表达式(5)初始化的,表达式(5)中的第一参数为PDCCH承载的DCI格式和/或DCI大小。
在一些实施例中,实施例3可以应用于在相同的搜索空间检测承载不同DCI格式和/或DCI大小的PDCCH的过程中,通过实施例3产生的第一序列可以确定是否存在承载目标DCI格式和/或目标DCI大小的目标PDCCH,从而可以减少对各种DCI格式和/或DCI大小的盲检测,缩小盲检测的范围,实现终端设备节能。
本申请实施例对第一序列的资源不做限定。在一些实施例中,第一序列的资源可以位于第一序列解调的一个或多个PDCCH候选中的一个PDCCH候选所在的资源(如REG)内。或者说,第一序列可以映射到第一序列解调的一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。不过本申请实施例并不限定于此,例如,第一序列的资源可以位于CORESET中终端设备尝试解码PDCCH的连续资源块集合内的REG内。
本申请实施例对第一序列的位置不做限定,第一序列可以位于PRB的任意位置,比如位于PRB中的子载波1,5,9上,也可以位于PRB中的子载波2,6,10上,也可以位于PRB中的子载波0,3,6,9上等。在一些实施例中,第一序列的位置是可以变化的,以适应不同的性能要求和部署场景。
本申请实施例对第一序列的频域密度不做限定。例如,每四个子载波可以映射一个第一序列。又例如,每三个子载波可以映射一个第一序列。又例如,每六个子载波可以映射一个第一序列等。增加第一序列的频域密度有利于提高第一序列的检测性能,降低第一序列的频域密度有利于减少第一序列的开销。在一些实施例中,第一序列的频域密度是可以变化的,以适应不同的性能要求和部署场景。例如,在传输开销较大的情况下,可以采用较低的第一序列的频域密度;在第一序列检测性能较差的情况下,可以采用较高的第一序列的频域密度。
在一些实施例中,第一序列的位置和/或频域密度可以通过网络设备的配置来确定。不过本申请实施例并不限定于此,例如,第一序列的位置和/或频域密度可以是协议预定义的。
上文对第一序列进行了介绍,为了便于理解,下文结合图6对本申请的流程进行介绍。需要说明的是,下文未详细介绍的内容可以参见上文,比如第一序列、目标PDCCH、第一参数等相关内容均可以参见上文的介绍。
图6是本申请实施例提供的用于无线通信的方法的流程示意图。图6所示的方法是站在终端设备和网络设备交互的角度介绍的,该终端设备和网络设备例如可以分别是图1所示的终端设备120和网络设备110。
图6所示的方法包括步骤S620。在步骤S620,终端设备检测第一序列。
第一序列可以用于解调一个或多个PDCCH候选,且第一序列可以用于确定该一个或多个PDCCH候选是否包括终端设备的目标PDCCH。
在一些实施例中,步骤S620可以包括:终端设备基于目标PDCCH对应的第一参数检测第一序列。
以目标PDCCH为终端设备特定的PDCCH为例,终端设备可以基于终端设备特定的第一参数检测第一序列,以确定一个或多个PDCCH候选是否包括终端设备特定的PDCCH。
以目标PDCCH包括终端设备所属的终端设备组对应的PDCCH为例,终端设备可以基于终端设备组对应的第一参数检测第一序列,以确定一个或多个PDCCH候选是否包括该终端设备组对应的PDCCH。
以目标PDCCH包括调度公共信息的PDCCH为例,终端设备可以基于终端设备组对应的第一参数检测第一序列,以确定一个或多个PDCCH候选是否包括调度公共信息的PDCCH。以目标PDCCH包括寻呼PDCCH、第一参数包括RNTI为例,终端设备可以基于P-RNTI检测第一序列,以确定一个或多个PDCCH候选是否包括寻呼PDCCH。以目标PDCCH包括SIPDCCH、第一参数包括RNTI为例,终端设备可以基于SI-RNTI检测第一序列,以确定一个或多个PDCCH候选是否包括SIPDCCH。
以目标PDCCH包括承载目标DCI格式的PDCCH为例,终端设备可以基于目标DCI格式对应的第一参数检测第一序列,以确定一个或多个PDCCH候选是否包括承载目标DCI格式的PDCCH。以目标DCI格式为DCI格式2_0为例,终端设备可以基于DCI格式2_0对应的第一参数(比如,DCI格式2_0的编号)检测第一序列,以确定一个或多个PDCCH候选是否包括承载DCI格式2_0的PDCCH。以目标DCI格式为DCI格式2_7为例,终端设备可以基于DCI格式2_7对应的第一参数(比如,DCI格式2_7的编号)检测第一序列,以确定一个或多个PDCCH候选是否包括承载DCI格式2_7的PDCCH。
以目标PDCCH包括承载目标DCI大小的PDCCH为例,终端设备可以基于目标DCI大小对应的第一参数检测第一序列,以确定一个或多个PDCCH候选是否包括承载目标DCI大小的PDCCH。以目标DCI大小为16比特为例,终端设备可以基于DCI大小为16比特对应的第一参数(比如,DCI大小为16比特的编号)检测第一序列,以确定一个或多个PDCCH候选是否包括承载DCI大小为16比特的PDCCH。以目标DCI大小为32比特为例,终端设备可以基于DCI大小为32比特对应的第一参数(比如,DCI大小为32比特的编号)检测第一序列,以确定一个或多个PDCCH候选是否包括承载DCI大小为32比特的PDCCH。
继续参见图6,在一些实施例中,图6所示的方法可以包括步骤S610。在步骤S610,网络设备向终端设备发送第一序列。之后,终端设备可以检测该第一序列。
在一些实施例中,图6所示的方法可以包括步骤S630a和/或步骤S630b。在步骤S630a,如果第一序列解调的一个或多个PDCCH候选包括终端设备的目标PDCCH,终端设备解码和校验该一个或多个PDCCH候选。在步骤S630b,如果第一序列解调的一个或多个PDCCH候选不包括终端设备的目标PDCCH,终端设备跳过解码和校验该一个或多个PDCCH候选。
在一些实施例中,终端设备跳过解码和校验一个或多个PDCCH候选也可以理解或替换为:终端设备不需要对该一个或多个PDCCH候选进行解码和校验。
在一些实施例中,终端设备确定存在目标PDCCH的情况下,终端设备可以在PDCCH候选中的CCE的其他RE获得PDCCH所在的RE,对PDCCH进行解码和校验。
关于终端设备解码和校验PDCCH候选的相关内容可以参见现有技术,为了简洁,此处不再赘述。
本申请实施例对终端设备基于第一序列确定一个或多个PDCCH候选是否包括终端设备的目标PDCCH的实现方式不做限定。示例性地,终端设备可以根据第一参数检测第一序列,当检测出现相关峰值时,终端设备确定检测到目标PDCCH;否则,终端设备确定未检测到目标PDCCH。
在一些实施例中,终端设备可以在一个或多个PDCCH候选中的每个PDCCH候选对应的CCE中检测第一序列,当检测出现相关峰值时,终端设备确定检测到目标PDCCH。
为了便于理解,下文结合图7给出终端设备确定目标PDCCH的一个示例。图7所示的CORESET包含2个符号,REG以非交织的方式映射到CCE0-CCE3共4个CCE。在图7的示例中,如果终端设备需要检测聚合级别为2的PDCCH,则CCE0和CCE1是一个PDCCH候选,终端设备首先需要确定CCE0和CCE1中的REG中的第一序列的RE位置,对这个RE位置上映射的第一序列进行相关检测,以确定该PDCCH候选是否包括目标PDCCH。在图7的示例中,如果终端设备需要检测聚合级别为4的PDCCH,则CCE0-CCE3是一个PDCCH候选,终端设备首先需要确定CCE0-CCE3中的REG中的第一序列的RE位置,对这个RE位置上映射的第一序列进行相关检测,以确定该PDCCH候选是否包括目标PDCCH。
类似地,当REG以交织的方式映射到CCE的情况下,对于一个PDCCH候选,终端设备需要确定其对应的CCE和REG,对REG映射的第一序列进行相关检测,以确定PDCCH候选是否包括目标PDCCH。
上文结合图1至图7,详细描述了本申请的方法实施例,下面结合图8至图10,详细描述本申请的装置实施例。应理解,方法实施例的描述与装置实施例的描述相互对应,因此,未详细描述的部分可以参见前面方法实施例。
图8是本申请实施例提供的终端设备的结构示意图。图8所示的终端设备800包括检测模块810。检测模块810可以用于检测第一序列,所述第一序列用于解调一个或多个PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
可选地,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
可选地,所述第一参数包括以下中的一种或多种:RNTI;所述一个或多个PDCCH候选承载的DCI的相关信息。
可选地,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
可选地,所述DCI的相关信息包括以下中的一种或多种:DCI格式,DCI大小。
可选地,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
可选地,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。
可选地,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。
可选地,所述第一参数是网络设备配置的。
可选地,所述检测模块进一步用于:基于所述目标PDCCH对应的第一参数检测所述第一序列。
可选地,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
可选地,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
可选地,所述终端设备还包括执行模块820,用于:如果所述一个或PDCCH候选包括所述终端设备的目标PDCCH,解码和校验所述一个或多个PDCCH候选;和/或如果所述一个或多个PDCCH候选不包括所述终端设备的目标PDCCH,跳过解码和校验所述一个或多个PDCCH候选。
可选地,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
可选地,所述检测模块810可以为处理器1010。终端设备800还可以包括存储器1020和收发器1030,具体如图10所示。
图9是本申请实施例提供的网络设备的结构示意图。图9所示的网络设备900包括发送模块910。
发送模块910可以用于向终端设备发送第一序列,所述第一序列用于解调一个或PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
可选地,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
可选地,所述第一参数包括以下中的一种或多种:RNTI;所述一个或多个PDCCH候选承载的DCI的相关信息。
可选地,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
可选地,所述DCI的相关信息包括以下中的一种或多种:DCI格式,DCI大小。
可选地,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
可选地,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。
可选地,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。
可选地,所述第一参数是所述网络设备配置的。
可选地,所述第一序列是基于所述目标PDCCH对应的第一参数检测的。
可选地,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
可选地,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
可选地,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
可选地,所述发送模块910可以为收发器1030。网络设备900还可以包括处理器1010和存储器1020,具体如图10所示。
图10是本申请实施例的通信装置的示意性结构图。图10中的虚线表示该单元或模块为可选的。该装置1000可用于实现上述方法实施例中描述的方法。装置1000可以是芯片、终端设备或网络设备。
装置1000可以包括一个或多个处理器1010。该处理器1010可支持装置1000实现前文方法实施例所描述的方法。该处理器1010可以是通用处理器或者专用处理器。例如,该处理器可以为中央处理单元(central processing unit,CPU)。或者,该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
装置1000还可以包括一个或多个存储器1020。存储器1020上存储有程序,该程序可以被处理器1010执行,使得处理器1010执行前文方法实施例所描述的方法。存储器1020可以独立于处理器1010也可以集成在处理器1010中。
装置1000还可以包括收发器1030。处理器1010可以通过收发器1030与其他设备或芯片进行通信。例如,处理器1010可以通过收发器1030与其他设备或芯片进行数据收发。
本申请实施例还提供一种计算机可读存储介质,用于存储程序。该计算机可读存储介质可应用于本申请实施例提供的终端设备或网络设备中,并且该程序使得计算机执行本申请各个实施例中的由终端设备或网络设备执行的方法。
本申请实施例还提供一种计算机程序产品。该计算机程序产品包括程序。该计算机程序产品可应用于本申请实施例提供的终端设备或网络设备中,并且该程序使得计算机执行本申请各个实施例中的由终端设备或网络设备执行的方法。
本申请实施例还提供一种计算机程序。该计算机程序可应用于本申请实施例提供的终端设备或网络设备中,并且该计算机程序使得计算机执行本申请各个实施例中的由终端设备或网络设备执行的方法。
应理解,本申请中术语“系统”和“网络”可以被可互换使用。另外,本申请使用的术语仅用于对本申请的具体实施例进行解释,而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象,而不是用于描述特定顺序。此外,
术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。
在本申请的实施例中,提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
在本申请实施例中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
本申请的实施例,提到的“包括”可以指直接包括,也可以指间接包括。可选地,可以将本申请实施例中提到的“包括”替换为“指示”或“用于确定”。例如,A包括B,可以替换为A指示B,或A用于确定B。
本申请实施例中,“预定义”或“预配置”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中,所述“协议”可以指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
本申请实施例中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
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单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够读取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,数字通用光盘(digital video disc,DVD))或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (61)
- 一种用于无线通信的方法,其特征在于,包括:终端设备检测第一序列,所述第一序列用于解调一个或多个物理下行控制信道PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
- 根据权利要求1所述的方法,其特征在于,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
- 根据权利要求2所述的方法,其特征在于,所述第一参数包括以下中的一种或多种:无线网络临时标识RNTI;所述一个或多个PDCCH候选承载的下行控制信息DCI的相关信息。
- 根据权利要求3所述的方法,其特征在于,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
- 根据权利要求3或4所述的方法,其特征在于,所述DCI的相关信息包括以下中的一种或多种:DCI格式,DCI大小。
- 根据权利要求2-5中任一项所述的方法,其特征在于,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
- 根据权利要求2-6中任一项所述的方法,其特征在于,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。 - 根据权利要求6或7所述的方法,其特征在于,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。 - 根据权利要求2-8中任一项所述的方法,其特征在于,所述第一参数是网络设备配置的。
- 根据权利要求2-9中任一项所述的方法,其特征在于,所述终端设备检测第一序列,包括:所述终端设备基于所述目标PDCCH对应的第一参数检测所述第一序列。
- 根据权利要求1-10中任一项所述的方法,其特征在于,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
- 根据权利要求1-11中任一项所述的方法,其特征在于,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
- 根据权利要求1-12中任一项所述的方法,其特征在于,所述方法还包括:如果所述一个或PDCCH候选包括所述终端设备的目标PDCCH,所述终端设备解码和校验所述一个或多个PDCCH候选;和/或如果所述一个或多个PDCCH候选不包括所述终端设备的目标PDCCH,所述终端设备跳过解码和校验所述一个或多个PDCCH候选。
- 根据权利要求1-13中任一项所述的方法,其特征在于,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
- 一种用于无线通信的方法,其特征在于,包括:网络设备向终端设备发送第一序列,所述第一序列用于解调一个或多个物理下行控制信道PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
- 根据权利要求15所述的方法,其特征在于,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
- 根据权利要求16所述的方法,其特征在于,所述第一参数包括以下中的一种或多种:无线网络临时标识RNTI;所述一个或多个PDCCH候选承载的下行控制信息DCI的相关信息。
- 根据权利要求17所述的方法,其特征在于,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
- 根据权利要求17或18所述的方法,其特征在于,所述DCI的相关信息包括以下中的一种或 多种:DCI格式,DCI大小。
- 根据权利要求16-19中任一项所述的方法,其特征在于,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
- 根据权利要求16-20中任一项所述的方法,其特征在于,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。 - 根据权利要求20或21所述的方法,其特征在于,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。 - 根据权利要求16-22中任一项所述的方法,其特征在于,所述第一参数是所述网络设备配置的。
- 根据权利要求16-23中任一项所述的方法,其特征在于,所述第一序列是基于所述目标PDCCH对应的第一参数检测的。
- 根据权利要求15-24中任一项所述的方法,其特征在于,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
- 根据权利要求15-25中任一项所述的方法,其特征在于,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
- 根据权利要求15-26中任一项所述的方法,其特征在于,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
- 一种终端设备,其特征在于,包括:检测模块,用于检测第一序列,所述第一序列用于解调一个或多个物理下行控制信道PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
- 根据权利要求28所述的终端设备,其特征在于,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
- 根据权利要求29所述的终端设备,其特征在于,所述第一参数包括以下中的一种或多种:无线网络临时标识RNTI;所述一个或多个PDCCH候选承载的下行控制信息DCI的相关信息。
- 根据权利要求30所述的终端设备,其特征在于,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
- 根据权利要求30或31所述的终端设备,其特征在于,所述DCI的相关信息包括以下中的一种或多种:DCI格式,DCI大小。
- 根据权利要求29-32中任一项所述的终端设备,其特征在于,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
- 根据权利要求29-33中任一项所述的终端设备,其特征在于,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。 - 根据权利要求33或34所述的终端设备,其特征在于,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。 - 根据权利要求29-35中任一项所述的终端设备,其特征在于,所述第一参数是网络设备配置的。
- 根据权利要求29-36中任一项所述的终端设备,其特征在于,所述检测模块进一步用于:基于所述目标PDCCH对应的第一参数检测所述第一序列。
- 根据权利要求28-37中任一项所述的终端设备,其特征在于,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
- 根据权利要求28-38中任一项所述的终端设备,其特征在于,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
- 根据权利要求28-39中任一项所述的终端设备,其特征在于,所述终端设备还包括执行模块,用于:如果所述一个或PDCCH候选包括所述终端设备的目标PDCCH,解码和校验所述一个或多个PDCCH候选;和/或如果所述一个或多个PDCCH候选不包括所述终端设备的目标PDCCH,跳过解码和校验所述一个或多个PDCCH候选。
- 根据权利要求28-40中任一项所述的终端设备,其特征在于,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
- 一种网络设备,其特征在于,包括:发送模块,用于向终端设备发送第一序列,所述第一序列用于解调一个或多个物理下行控制信道PDCCH候选,且所述第一序列用于确定所述一个或多个PDCCH候选是否包括所述终端设备的目标PDCCH。
- 根据权利要求42所述的网络设备,其特征在于,所述第一序列是基于第一参数生成的,其中,所述第一参数是终端设备特定的参数,或者,所述第一参数是一组终端设备对应的参数。
- 根据权利要求43所述的网络设备,其特征在于,所述第一参数包括以下中的一种或多种:无线网络临时标识RNTI;所述一个或多个PDCCH候选承载的下行控制信息DCI的相关信息。
- 根据权利要求44所述的网络设备,其特征在于,所述RNTI包括以下中的一种或多种:所述终端设备特定的RNTI,所述终端设备的公共搜索空间对应的RNTI。
- 根据权利要求44或45所述的网络设备,其特征在于,所述DCI的相关信息包括以下中的一种或多种:DCI格式,DCI大小。
- 根据权利要求43-46中任一项所述的网络设备,其特征在于,所述第一序列是基于伪随机序列生成的,所述伪随机序列是基于所述第一参数生成的。
- 根据权利要求43-47中任一项所述的网络设备,其特征在于,所述第一序列是基于以下表达式生成的:
其中,rl(m)表示在符号l上的第一序列,c(i)为伪随机序列,c(i)是基于所述第一参数初始化的。 - 根据权利要求47或48所述的网络设备,其特征在于,所述伪随机序列是基于以下表达式初始化的:
其中,cinit为初始化的伪随机序列,为一个时隙中的符号的个数,l为时隙内的符号的编号,为无线帧内时隙的编号,N1为所述第一参数。 - 根据权利要求43-49中任一项所述的网络设备,其特征在于,所述第一参数是所述网络设备配置的。
- 根据权利要求43-50中任一项所述的网络设备,其特征在于,所述第一序列是基于所述目标PDCCH对应的第一参数检测的。
- 根据权利要求42-51中任一项所述的网络设备,其特征在于,所述第一序列包括以下中的一种或多种:所述终端设备特定的序列,所述终端设备的公共搜索空间对应的序列,所述终端设备所属的终端设备组对应的序列。
- 根据权利要求42-52中任一项所述的网络设备,其特征在于,所述第一序列的资源位于所述一个或多个PDCCH候选中的一个PDCCH候选所在的资源内。
- 根据权利要求42-53中任一项所述的网络设备,其特征在于,所述目标PDCCH包括以下中的一种:所述终端设备特定的PDCCH,所述终端设备所属的终端设备组对应的PDCCH,调度公共信息的PDCCH,承载目标DCI格式的PDCCH,承载目标DCI大小的PDCCH。
- 一种终端设备,其特征在于,包括存储器和处理器,所述存储器用于存储程序,所述处理器用于调用所述存储器中的程序,以使所述终端设备执行如权利要求1-14中任一项所述的方法。
- 一种网络设备,其特征在于,包括收发器、存储器和处理器,所述存储器用于存储程序,所述处理器用于调用所述存储器中的程序,并控制所述收发器接收或发送信号,以使所述网络设备执行如权利要求15-27中任一项所述的方法。
- 一种装置,其特征在于,包括处理器,用于从存储器中调用程序,以使所述装置执行如权利要求1-14或15-27中任一项所述的方法。
- 一种芯片,其特征在于,包括处理器,用于从存储器调用程序,使得安装有所述芯片的设备执行如权利要求1-14或15-27中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,其上存储有程序,所述程序使得计算机执行如权利要求1-14或15-27中任一项所述的方法。
- 一种计算机程序产品,其特征在于,包括程序,所述程序使得计算机执行如权利要求1-14或15-27中任一项所述的方法。
- 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1-14或15-27中任一项所述的方法。
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| CN113163503A (zh) * | 2020-01-23 | 2021-07-23 | 华为技术有限公司 | 用于下行数据信道接收和发送的方法以及通信装置 |
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| CN103781160A (zh) * | 2012-10-23 | 2014-05-07 | 华为技术有限公司 | 数据的传输方法及装置 |
| CN108206730A (zh) * | 2016-12-19 | 2018-06-26 | 联发科技(新加坡)私人有限公司 | 物理下行链路控制信道解码方法 |
| CN111049630A (zh) * | 2018-10-15 | 2020-04-21 | 维沃移动通信有限公司 | 序列检测方法、序列发送方法和设备 |
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