WO2022120838A1 - 确定搜索空间的方法、终端设备和网络设备 - Google Patents

确定搜索空间的方法、终端设备和网络设备 Download PDF

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Publication number
WO2022120838A1
WO2022120838A1 PCT/CN2020/135921 CN2020135921W WO2022120838A1 WO 2022120838 A1 WO2022120838 A1 WO 2022120838A1 CN 2020135921 W CN2020135921 W CN 2020135921W WO 2022120838 A1 WO2022120838 A1 WO 2022120838A1
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Prior art keywords
search space
terminal device
coreset
search
detected
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PCT/CN2020/135921
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English (en)
French (fr)
Inventor
方昀
史志华
陈文洪
黄莹沛
田杰娇
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/135921 priority Critical patent/WO2022120838A1/zh
Priority to CN202080105055.2A priority patent/CN116171549A/zh
Publication of WO2022120838A1 publication Critical patent/WO2022120838A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management

Definitions

  • the present application relates to the field of communications, and more particularly, to a method, a terminal device, and a network device for determining a search space.
  • the physical downlink control channel (PDCCH, Physical Downlink Control CHannel) is enhanced based on multi-TRP, multi-Transmission/Reception Point.
  • the method is that multiple TRPs transmit the PDCCH through time-frequency resources.
  • TCI Transmission Configuration Indicator
  • TCI Transmission Configuration Indicator
  • CCEs Control-Channel Elements
  • the embodiments of the present application provide a method, a terminal device, and a network device for determining a search space, which can determine the number of non-overlapping CCEs detected in the search space in the case of multi-TRP transmission of PDCCH.
  • An embodiment of the present application proposes a method for determining a search space, including:
  • the terminal device receives indication information, which indicates that: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space and the first CORESET association, the first CORESET is associated with the at least 2 different TCI states;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET;
  • the terminal device determines the number of non-overlapping CCEs detected in the first search space in the multiple search spaces that need to be monitored in the first time unit; wherein the first time unit is in the first time-frequency resource within the range.
  • the embodiment of the present application also proposes a method for determining a search space, including:
  • the network device sends indication information to the terminal device, where the indication information is used for the terminal device to determine the number of non-overlapping CCEs detected in each of the multiple search spaces that need to be monitored in the first time unit; wherein,
  • the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space is associated with the first CORESET, and the first CORESET is associated with the at least 2 different TCI states are associated;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET.
  • the embodiment of the present application also proposes a terminal device, including:
  • an indication information receiving module configured to receive indication information, the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least 2 different TCI states on the first time-frequency resource; the first search The space is associated with the first CORESET, and the first CORESET is associated with the at least 2 different TCI states;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET;
  • the first determination module is configured to determine, according to the indication information, the number of non-overlapping CCEs detected in the first search space in a plurality of search spaces that need to be monitored on the first time unit; wherein the first time unit is at within the range of the first time-frequency resource.
  • the embodiment of the present application also proposes a network device, including:
  • an indication information sending module configured to send indication information, the indication information is used by the terminal device to determine the number of non-overlapping CCEs detected in each first search space in a plurality of search spaces that need to be monitored in the first time unit;
  • the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space is associated with the first CORESET, and the first CORESET be associated with at least 2 different TCI states;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET.
  • the terminal device can use the received indication information to determine the number of non-overlapping CCEs detected in the search space associated with the CORESET associated with at least two TCI states, so as to determine the search space for blind detection.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method 200 for determining a search space according to an embodiment of the present application.
  • FIG. 3 is a flowchart of a method 300 for determining the number of non-overlapping CCEs detected in the first search space in a method for determining a search space according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method 400 for determining a search space according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the CCE occupied by the candidate PDCCH of SS 1 in the embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method 600 for determining a search space according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a network device 1000 according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device 1100 according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a chip 1200 according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • 5G 5th-Generation
  • the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA standalone
  • This embodiment of the present application does not limit the applied spectrum.
  • the embodiments of the present application may be applied to licensed spectrum, and may also be applied to unlicensed spectrum.
  • terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • UE User Equipment
  • access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems, such as terminal devices in NR networks or Terminal equipment in the future evolved Public Land Mobile Network (Public Land Mobile Network, PLMN) network, etc.
  • STAION, ST in the WLAN
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • a network device can be a device used to communicate with a mobile device.
  • the network device can be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a WCDMA
  • a base station NodeB, NB
  • it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, wearable device, and network equipment (gNB) in NR networks Or network equipment in the PLMN network that evolves in the future.
  • AP Access Point
  • BTS Base Transceiver Station
  • gNB network equipment
  • a network device provides services for a cell
  • a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell
  • the cell may be a network device (for example, a frequency domain resource).
  • the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell), where the small cell can include: Metro cell, Micro cell, Pico cell cell), Femto cell, etc.
  • These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.
  • FIG. 1 exemplarily shows one network device 110 and two terminal devices 120.
  • the wireless communication system 100 may include a plurality of network devices 110, and the coverage of each network device 110 may include other numbers
  • the terminal device 120 is not limited in this embodiment of the present application.
  • the embodiments of the present application may be applied to one terminal device 120 and one network device 110 , and may also be applied to one terminal device 120 and another terminal device 120 .
  • the wireless communication system 100 may further include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF). This is not limited.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • corresponding may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
  • the downlink control channel includes a control channel element (CCE, Control-Channel Element), a search space (Search Space), a resource element group (REG, Resource-Element Group), a resource element group bundle (REG bundle) and a control resource set (CORESET, control resource set), etc.
  • CCE Control channel element
  • Search Space Search Space
  • REG Resource-Element Group
  • REG bundle resource element group bundle
  • CORESET control resource set
  • the CCE is the basic unit that constitutes the PDCCH, and occupies 6 REGs in the frequency domain.
  • a given PDCCH may be composed of 1, 2, 4, 8, and 16 CCEs, and the number of CCEs constituting the PDCCH is called an aggregation level (AL, Aggregation Level).
  • a search space is a set of candidate PDCCHs (PDCCH candidates) under a certain aggregation level, and the candidate PDCCHs may also be referred to as PDCCH candidates.
  • the aggregation level of the PDCCH actually sent by the base station is variable over time, and since there is no relevant signaling to inform the UE, the UE needs to blindly detect (blind detection can also be called blind detection) PDCCHs under different aggregation levels.
  • blind detection can also be called blind detection
  • Each search space is associated with a control resource set (CORESET, Control Resource Set), and different search spaces can be associated with the same or different CORESETs.
  • CORESET specifies the frequency domain position and the number of time domain symbols where the candidate PDCCH in the search space is located.
  • the search space and CORESET determine the time-frequency resource range for PDCCH blind detection, and the PDCCH will only be transmitted within the time-frequency resource range determined by the search space and CORESET.
  • a terminal device can support multiple CORESETs, and the CORESET supported by the terminal device is determined by configuration information.
  • the candidate PDCCH configured for the terminal equipment can exceed the upper limit of the UE's blind detection capability.
  • the UE determines a subset of the configured candidate PDCCHs in the configured candidate PDCCH set according to a predefined mechanism as the candidate PDCCH to be detected. gather.
  • the maximum blind detection capability includes the maximum detection capability of the terminal device in each time slot or each time span (span).
  • the number of candidate PDCCHs and the maximum number of non-overlapped CCEs is necessary to define the maximum blind detection capability of the UE, wherein the maximum blind detection capability includes the maximum detection capability of the terminal device in each time slot or each time span (span).
  • each CORESET can only activate one TCI state at the same time, there is only one TRP in the search space corresponding to each CORESET for PDCCH transmission.
  • one CORESET can be associated with 2 TCI states for PDCCH transmission, so multiple TRPs can transmit SFN of PDCCH through the same CORESET, at this time, multiple TRPs occupy the same CCE; In this case, how to calculate the number of CCEs in this part when the terminal device performs blind detection is a problem that needs to be solved at present.
  • the terminal device can determine the number of non-overlapping CCEs corresponding to the search space, and determine the search space for blind PDCCH detection based on this.
  • FIG. 2 is a schematic flowchart of a method 200 for determining a search space according to an embodiment of the present application.
  • the method can optionally be applied to the system shown in FIG. 1 . , using the terminal device applied to Fig. 1, but not limited to this.
  • the method includes at least some of the following:
  • the terminal device receives indication information, which indicates that: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space is the same as the first CORESET association, the first CORESET is associated with the at least 2 different TCI states;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET;
  • the terminal device determines the number of non-overlapping CCEs detected in the first search space among the multiple search spaces that need to be monitored in the first time unit; wherein, the first time unit is in the first time unit. within the range of time-frequency resources.
  • the above-mentioned first search space is a search space associated with only one CORESET.
  • the above-mentioned first time unit may include a time slot (slot) and/or a time span (span).
  • the terminal device may also perform the determination in combination with pre-received configuration information.
  • the configuration information includes at least one of the following:
  • the search space configured for the end device
  • FIG. 3 is a flowchart of a method 300 for determining the number of non-overlapping CCEs detected in the first search space in a method for determining a search space according to an embodiment of the present application.
  • the manner of determining the number of non-overlapping CCEs detected in the first search space includes:
  • S310 Determine the non-overlapping CCEs occupied by the first search space; wherein, the non-overlapping CCEs occupied by the first search space include: CCEs occupied by all candidate PDCCHs configured in the first search space;
  • S320 Determine, according to the above indication information, the number of TCI states corresponding to each non-overlapping CCE in each non-overlapping CCE occupied by the first search space;
  • S330 Determine the number of non-overlapping CCEs detected in the first search space according to the number of TCI states corresponding to each non-overlapping CCE.
  • the terminal device determining the non-overlapping CCEs occupied by the first search space includes: the terminal device determining the CCEs occupied by all candidate PDCCHs in the first search space; and determining the first search space according to the CCEs occupied by all the candidate PDCCHs.
  • the search space SS0 is configured with 2 candidate PDCCHs, and the identifiers of the 2 candidate PDCCHs are PDCCH 1 and PDCCH 2 respectively.
  • PDCCH 1 occupies 8 CCEs, and their indices are CCE 0 to CCE 7 respectively;
  • PDCCH 2 occupies 4 CCEs, and their indices are CCE 6 to CCE 9 respectively.
  • the non-overlapping CCEs occupied by the search space SS0 include the CCEs occupied by all the candidate PDCCHs (that is, PDCCH 1 and PDCCH 2) occupied by the search space SS0, that is, CCEs 0 to CCE 9; wherein, each non-overlapping CCE corresponds to a different CCE index.
  • the search space SS1 is configured with 3 candidate PDCCHs, and the identifiers of the 3 candidate PDCCHs are PDCCH 1, PDCCH 2 and PDCCH 3 respectively.
  • PDCCH 1 occupies 8 CCEs, and their indexes are CCE 0 ⁇ CCE 7
  • PDCCH 2 occupies 2 CCEs, and their indexes are CCE 6 ⁇ CCE 7 respectively
  • PDCCH 3 occupies 8 CCEs, and their indexes are CCE 2 ⁇ CCE 9
  • the non-overlapping CCEs occupied by the search space SS1 include the CCEs occupied by all the candidate PDCCHs (ie, PDCCH 1, PDCCH 2, and PDCCH 3) occupied by the search space SS 1, that is, CCEs 0 to CCE 9; wherein, each non-overlapping CCE corresponds to Different CCE indexes.
  • the search space SS 0 is only associated with CORESET 1, wherein CORESET 1 is associated with two TCI states, the identifiers of which are TCI state 1 and TCI state 2 respectively.
  • the indication information received by the terminal equipment indicates that: on the first time-frequency resource, the PDCCH 1 in the search space SS 0 is simultaneously transmitted through TCI state 1 and TCI state 2. Wherein, the aforementioned first time-frequency resource is jointly determined by SS1 and CORESET 1.
  • TCI state 1 transmits PDCCH 2 in search space SS 0.
  • the terminal device first determines the number of TCI states corresponding to each non-overlapping CCE in the non-overlapping CCEs occupied by SS0. Specifically, the number of TCI states corresponding to CCE 0 to CCE 7 occupied by SS 0 is 2 (CCE 0 to CCE 7 correspond to TCI state 1 and TCI state 2 respectively), and CCE 8 to CCE 9 occupied by SS 0 correspond to The number of TCI states is 1 (CCE 8 to CCE 9 correspond to TCI state 1 respectively). According to the aforementioned number, the terminal device can determine that the number of non-overlapping CCEs detected in SS0 is 8*2+2.
  • N is a natural number greater than or equal to 2 TCI states
  • the above-mentioned indication information indicates that for all candidate PDCCHs in the first search space, each candidate PDCCH is transmitted in two different TCI states on the first time-frequency resource, it can be determined that the first search space
  • the number of detected non-overlapping CCEs is twice the number of non-overlapping CCEs actually occupied by the first search space.
  • the number of non-overlapping CCEs actually occupied by SS 0 is 10 (including CCE 0 to CCE 9). If the above indication information indicates that the first time-frequency resource is transmitted through two different TCI states Each candidate PDCCH in SS 0, that is, simultaneously transmit PDCCH 1 and PDCCH 2 in SS 0 through TCI state 1 and TCI state 2; then the number of TCI states corresponding to CCE 0 to CCE 9 actually occupied by SS 0 can be determined. is 2, so it can be determined that the number of non-overlapping CCEs detected in SSO is twice the number of non-overlapping CCEs that it actually occupies (i.e., 10).
  • the above indication information can be used in at least the following three ways:
  • the first search space includes all search spaces only associated with the first CORESET.
  • the network device configures a set of search spaces (including SS 0 to SS 5) and a set of CORESET for the terminal device, where SS 0 and SS 2 are associated with CORESET 0, and CORESET 0 is associated with at least 2 different TCI states (ie CORESET 0 is the first CORESET described above.
  • the above-mentioned indication information may include: transmitting candidate PDCCHs in all search spaces associated with CORESET 0 through the at least 2 different TCI states on the first time-frequency resource. That is to say, the indication information does not need to indicate the index information of SS 0 and SS 2.
  • the first search space includes only a part of the search space associated with the first CORESET.
  • the partial search space may include a search space that supports simultaneous transmission of at least two different TCI states.
  • the above-mentioned indication information may include: on the first time-frequency resource, the candidate in the partial search space associated with CORESET 0 is transmitted through the at least two different TCI states PDCCH. That is to say, the index information of the search space needs to be clearly indicated in the indication information; if the index information of a certain search space is indicated in the indication information, and the search space is associated with the CORESET associated with at least 2 different TCI states, then The candidate PDCCHs in the search space are transmitted through the at least 2 different TCI states on the first time-frequency resource.
  • the indication information indicates that SS 2 and SS 3 can transmit the same PDCCH by occupying the same time-frequency resources by the two TCI states when the associated CORESET is associated with two TCI states.
  • Other SSs transmit PDCCH through one of the default TCI states when the associated CORESET is associated with two TCI states.
  • both the search space and the CORESET need to be configured with two TCI states; that is, for a search space, only its associated CORESET is associated with two TCI states at the same time, and the search space supports the simultaneous transmission of two TCI states.
  • the search space is only transmitted through the two TCI states on the first time-frequency resource.
  • the indication information may include: for some candidate PDCCHs in the first search space, the candidate PDCCHs are transmitted in two different TCI states respectively on the first time-frequency resource.
  • the above-mentioned indication information may include: respectively transmitting PDCCH 1 in SS 0 through the two different TCI states on the first time-frequency resource. For other candidate PDCCHs in SS0, since there is no indication in the indication information, these candidate PDCCHs are transmitted only through one TCI state by default.
  • the indication manner of the partial candidate PDCCH includes at least one of the following:
  • the aggregation level corresponding to the candidate PDCCH is used for indication.
  • This embodiment of the present application may also use other manners to indicate which candidate PDCCHs belong to the above-mentioned partial candidate PDCCHs, and the embodiment of the present application does not limit the specific indication manner.
  • FIG. 4 is a schematic flowchart of a method 400 for determining a search space according to an embodiment of the present application. As shown in FIG. 4 , after the above step S220, the method may further include:
  • the terminal device determines the number of candidate PDCCHs to be detected in the multiple search spaces that need to be monitored in the first time unit, and the number of non-overlapping CCEs detected in other search spaces except the first search space. Number of;
  • S450 The terminal device performs blind detection on a search space where blind detection can be performed.
  • step S430 is the same as that in the prior art, and details are not described herein again.
  • step S440 may include:
  • the terminal device sorts the multiple search spaces that need to be monitored in the first time unit according to the identifiers of the search spaces; optionally, the terminal device can sort all the search spaces; The associated search space is sorted.
  • the maximum number of candidate PDCCHs is greater than or equal to the sum of the number of candidate PDCCHs to be detected in the first N-1 search spaces, and the maximum number of non-overlapping CCEs is greater than or equal to the sum of the number of non-overlapping CCEs detected in the first N-1 search spaces and, and the maximum number of candidate PDCCHs is less than the sum of the number of candidate PDCCHs to be detected in the first N search spaces, or the maximum number of non-overlapping CCEs is less than the sum of the number of non-overlapping CCEs detected in the first N search spaces, it is determined that the The search space for blind detection includes the first N-1 search spaces; wherein, N is an integer in the range of 2 to M, and M is the number of search spaces that need to be monitored in the first time unit.
  • five search spaces need to be monitored on the first time unit, and the five search spaces are sorted according to the identifiers.
  • First compare the number of candidate PDCCHs to be detected in the first search space after sorting with the maximum number of candidate PDCCHs, and compare the number of non-overlapping CCEs detected in the first search space with the maximum number of non-overlapping CCEs; If it exceeds, the sum of the number of candidate PDCCHs that need to be detected in the first search space and the second search space after sorting is compared with the maximum number of candidate PDCCHs.
  • the sum of the number of overlapping CCEs is compared with the maximum number of non-overlapping CCEs, and so on.
  • the number of candidate PDCCHs to be detected exceeds the maximum number of candidate PDCCHs, or the number of non-overlapping CCEs exceeds the maximum number of non-overlapping CCEs, it indicates that the maximum blind detection capability of the terminal device has been exceeded at this time, and the comparison is terminated, and the terminal device will not exceed the number of The first few search spaces of the maximum blind detection capability of the device are determined as the search spaces that can perform blind detection.
  • the steps of determining the number of candidate PDCCHs to be detected and the number of detected non-overlapping CCEs in the search space and determining the search space for blind detection can be performed alternately. For example, when 5 search spaces need to be monitored in the first time unit, first determine the number of candidate PDCCHs to be detected and the number of detected non-overlapping CCEs in the first search space, and compare them with the maximum number of the terminal equipment.
  • Blind detection capabilities are compared; if the maximum blind detection capability of the terminal device is not exceeded, determine the number of candidate PDCCHs to be detected and the number of detected non-overlapping CCEs in the second search space, and compare the first search space with the second The sum of the number of candidate PDCCHs that need to be detected in each search space and the sum of the number of non-overlapping CCEs detected in the search space are compared with the maximum blind detection capability of the terminal device; if the maximum blind detection capability of the terminal device is not exceeded, then determine the third The number of candidate PDCCHs to be detected and the number of detected non-overlapping CCEs in each search space are performed in sequence.
  • the number of candidate PDCCHs that need to be detected and the number of detected non-overlapping CCEs in all search spaces that need to be monitored on the first time unit can also be determined respectively, and then it can be determined.
  • Search space for blind detection For example, in the case that 5 search spaces need to be monitored in the first time unit, the number of candidate PDCCHs to be detected and the number of detected non-overlapping CCEs in the first to fifth search spaces after sorting are determined respectively.
  • Step 1 The network side configures a set of search spaces (corresponding to the search space id 0-5) and a set of CORESETs for the terminal, in which each SS is associated with a CORESET.
  • the CORESET 0 associated with the search space SS 2 activates two TCI states at the same time.
  • Step 2 The network side indicates that the PDCCH candidate in the SS associated with the CORESET of the two TCI states is simultaneously activated through the transmission of the two TCI states on the first time-frequency resource.
  • Step 3 The network side selects one of the PDCCH candidates in SS 2 to send the PDCCH.
  • Step 5 The terminal determines the number of PDCCH candidates to be detected and the number of detected CCEs in each search space according to the id of the search space and the listening period and the listening symbol (symbol) configured in the search space. Wherein, according to the above configuration and indication information, the terminal determines to transmit the PDCCH candidate in search space 2 through 2 TCI states on the first time-frequency resource, and determines that the number of non-overlapping CCEs detected in search space 2 is the actual number of search space 2 2 times the number of occupied non-overlapping CCEs.
  • Step 6 The terminal sorts the search spaces according to the search space id.
  • the terminal may sort all search spaces, or search spaces associated with CORESETs having the same set of identities.
  • the terminal calculates that the sum of the number of candidate PDCCHs to be detected and the total number of detected non-overlapping CCEs in the search space of the first N-1 (N is greater than or equal to 2, and N is less than or equal to M) in the search space is less than the time unit respectively.
  • the maximum number of candidate PDCCHs and the maximum number of non-overlapping CCEs, and the sum of the number of candidate PDCCHs to be detected in the first N search spaces is greater than the maximum number of candidate PDCCHs in the time unit, or the first N search spaces.
  • the terminal stops judging the N+1 to M search spaces, and determines that the first N-1 search spaces are search spaces that can be blindly detected.
  • Step 7 The terminal performs blind detection of the corresponding PDCCH on the first N-1 search spaces according to the calculation result of Step 6.
  • Step 1 The network side configures a set of search spaces (corresponding to search space id 0-5) and a set of CORESETs for the terminal, in which each SS is associated with a CORESET.
  • CORESET 0 associated with search space SS 0 and search space SS 2 activates two TCI states at the same time
  • CORESET associated with other search spaces activates only one TCI state at the same time.
  • Step 2 The network side instructs SS 2 and SS 3 to transmit the same PDCCH by occupying the first time-frequency resource through the two TCI states when the associated CORESET activates two TCI states.
  • Other SSs transmit PDCCH through one of the TCI states by default when the associated CORESET activates two TCI states.
  • Step 3 The network side selects one of the PDCCH candidates in SS 2 to send the PDCCH.
  • Step 4 The terminal determines that there are M search spaces to be monitored on the first time unit, and the corresponding search space ids are 0, 1, 2, 3, 4, and 5.
  • Step 5 The terminal determines the number of PDCCH candidates to be detected and the number of detected CCEs in each search space according to the id of the search space and the listening period and listening symbol configured in the search space. Wherein, according to the above configuration and indication information, the terminal determines to transmit the PDCCH candidate in SS 2 through 2 TCI states on the first time-frequency resource, and determines that the number of non-overlapping CCEs detected in SS 2 is the number of non-overlapping CCEs actually occupied by SS 2 2 times the number of overlapping CCEs.
  • the terminal Since the associated CORESET of search space 3 only activates 1 TCI state, the terminal determines that the PDCCH candidate in search space 3 is transmitted only through 1 TCI state, and determines that the number of non-overlapping CCEs detected in search space 3 is equal to search space 3 Number of non-overlapping CCEs actually occupied.
  • Step 6 The terminal sorts the search spaces according to the search space id.
  • the terminal may sort all search spaces, or search spaces associated with CORESETs having the same set of identities.
  • the terminal calculates that the sum of the number of candidate PDCCHs to be detected and the total number of detected non-overlapping CCEs in the search space of the first N-1 (N is greater than or equal to 2, and N is less than or equal to M) in the search space is less than the time unit respectively.
  • the maximum number of candidate PDCCHs and the maximum number of non-overlapping CCEs, and the sum of the number of candidate PDCCHs that need to be detected in the first N search spaces is greater than the maximum number of candidate PDCCHs in the time unit, or the number of non-overlapping CCEs detected in the first N search spaces
  • the terminal stops judging the N+1 to M search spaces, and determines that the first N-1 search spaces are search spaces that can be blindly detected.
  • Step 7 The terminal performs blind detection of the corresponding PDCCH on the first N-1 search spaces according to the calculation result of Step 6.
  • Step 1 The network side configures a set of search spaces (corresponding to the search space id 0-5) and a set of CORESETs for the terminal, in which each SS is associated with a CORESET.
  • the CORESET 0 associated with search space 0 and search space SS 2 activates two TCI states at the same time.
  • CORESETs associated with other search spaces activate only one TCI state at the same time.
  • Step 2 The network side instructs to transmit some PDCCH candidates or PDCCH candidates of one or several aggregation levels in SS2 through the two TCI states on the first time-frequency resource, respectively, and transmit the PDCCH candidates in SS2 through one TCI state. of other PDCCH candidates.
  • Step 3 The network side selects one of the PDCCH candidates in SS 2 to send the PDCCH.
  • Step 4 The terminal determines that there are M search spaces to be monitored on the first time unit, and the corresponding search space ids are 0, 1, 2, 3, 4, and 5.
  • Step 5 The terminal determines the number of PDCCH candidates to be detected and the number of detected CCEs in each search space according to the id of the search space and the listening period and listening symbol configured in the search space.
  • Step 6 The terminal sorts the search spaces according to the search space id.
  • the terminal may sort all search spaces, or search spaces associated with CORESETs having the same set of identities.
  • the terminal calculates that the sum of the number of candidate PDCCHs to be detected and the total number of detected non-overlapping CCEs in the search space of the first N-1 (N is greater than or equal to 2, and N is less than or equal to M) in the search space is less than the time unit respectively.
  • the maximum number of candidate PDCCHs and the maximum number of non-overlapping CCEs, and the sum of the number of candidate PDCCHs to be detected in the first N search spaces is greater than the maximum number of candidate PDCCHs in the time unit, or the number of non-overlapping detected in the first N search spaces
  • the terminal stops judging the N+1 to M search spaces, and determines that the first N-1 search spaces are search spaces that can be blindly detected.
  • Step 7 The terminal performs blind detection of the corresponding PDCCH on the first N-1 search spaces according to the calculation result of Step 6.
  • the introduction is made by taking the transmission of candidate PDCCHs in the first search space through two different TCI states on the first time-frequency resource as an example.
  • the indication information may indicate that the candidate PDCCH in the first search space is transmitted through more than 2 different TCI states on the first time-frequency resource; in this case, the terminal device determines the first search
  • the manner of the number of non-overlapping CCEs detected in space is the same as in the above-described embodiment.
  • the first search space SS1 includes 2 candidate PDCCHs, namely PDCCH 0 and PDCCH 1, wherein PDCCH 0 occupies CCE 0-CCE 7, and PDCCH 1 occupies CCE 6-CCE 13; the above indication information indicates that the first time-frequency There are 3 different TCI states (including TCI state 1, TCI state 2, TCI state 3) on the resource to transmit PDCCH 0 in the first search space SS1, and there are 2 different TCI states ( Including TCI state 3 and TCI state 4), the PDCCH 1 in the first search space SS 1 is transmitted.
  • TCI states including TCI state 1, TCI state 2, TCI state 3
  • TCI state 4 Including TCI state 3 and TCI state 4
  • the terminal device can determine that the number of TCI states corresponding to each CCE in CCE 0 to CCE 5 is 3 (that is, corresponding to TCI state 1, TCI state 2, and TCI state 3), CCE 6 to CCE 7
  • the number of TCI states corresponding to each CCE in the CCE is 4 (that is, corresponding to TCI state 1, TCI state 2, TCI state 3, TCI state 4), and each CCE in CCE 8 to CCE 13 corresponds to the TCI state respectively
  • Table 1 shows 5 SSs (search spaces), each SS is associated with a unique CORESET id, and the listening period of all search spaces is 5 slots (every 5 slots listen once), and the offset is the same, that is, PDCCH blind detection is performed on the same slot (3, 8, 13). Therefore, the number of search spaces to be monitored on the first time unit is 5.
  • the terminal first determines the listening time of each search space according to the configuration, and then according to the id size of the search space, the number of PDCCH candidates configured in each search space (including the sum of all PDCCH candidates of all aggregation levels), and the number of each search space
  • the number of occupied non-overlapping CCEs determines the number of detected non-overlapping CCEs in each search space, and further determines the search space for blind detection.
  • FIG. 5 is a schematic diagram of the CCE occupied by the candidate PDCCH of SS 1 in the embodiment of the present application.
  • the search space SS1 includes four aggregation levels of PDCCH candidates, and each aggregation level corresponds to a corresponding number of CCEs.
  • the number of overlapping CCEs is 24, that is, corresponding to CCE 0 to CCE 23.
  • Table 2 shows 5 SSs (search spaces), each SS is associated with a unique CORESET id; Different from Table 1, the listening periods of different SSs in Table 5 are different, so at this time
  • the SSs that need to be monitored at each listening time point are not all SSs, but need to be determined according to the listening period configuration of specific SSs.
  • the SSs that need to be monitored on slot3 are SS1 and SS3. In this case, it is only necessary to calculate the number of non-overlapping CCEs detected in SS1 and SS3 and the number of candidate PDCCHs to be detected, and further determine the search space for blind detection.
  • the time unit is slot as an example for introduction, and the embodiment of the present application may also use span as the time unit.
  • span For example, if the length of the span is 3 symbols, the listening positions of SS 2 in Table 2 are located in the second span of slot4, slot9, and slot14, respectively.
  • FIG. 6 is a schematic flowchart of a method 600 for determining a search space according to an embodiment of the present application.
  • the method can optionally be applied to the method shown in FIG. 1 .
  • the system utilizes the network equipment applied in Figure 1, but is not limited thereto.
  • the method includes at least some of the following:
  • the network device sends indication information to the terminal device, where the indication information is used by the terminal device to determine the number of non-overlapping CCEs detected in each of the multiple search spaces that need to be monitored in the first time unit; wherein ,
  • the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space is associated with the first CORESET, and the first CORESET is associated with At least 2 different TCI status associations;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET.
  • the first search space includes all search spaces only associated with the first CORESET.
  • the first search space includes only part of the search space associated with the first CORESET.
  • the above partial search space includes a search space that supports simultaneous transmission of at least two different TCI states.
  • the above indication information indicates that: for some candidate PDCCHs in the first search space, the network device transmits the candidate PDCCHs in two different TCI states on the first time-frequency resource respectively.
  • the indication manner of the above-mentioned partial candidate PDCCH includes at least one of the following:
  • the aggregation level corresponding to the candidate PDCCH is used for indication.
  • the above method further includes: the network device sends configuration information to the terminal device, where the configuration information includes at least one of the following:
  • the search space configured for the end device
  • FIG. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application, including:
  • the indication information receiving module 710 is configured to receive indication information, the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least 2 different TCI states on the first time-frequency resource; the first search The space is associated with a first CORESET, and the first CORESET is associated with at least 2 different TCI states;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET;
  • the first determining module 720 is configured to determine, according to the indication information, the number of non-overlapping CCEs detected in the first search space among the multiple search spaces that need to be monitored on the first time unit; wherein, the first time The unit is within the range of the first time-frequency resource.
  • the above-mentioned first determining module 720 is configured to determine the non-overlapping CCEs occupied by the first search space; wherein, the non-overlapping CCEs occupied by the first search space include: all candidate PDCCHs configured in the first search space are occupied according to the indication information, determine the number of TCI states corresponding to each non-overlapping CCE in each non-overlapping CCE occupied by the first search space; determine the number of TCI states corresponding to each non-overlapping CCE The number of non-overlapping CCEs detected in the first search space.
  • the above-mentioned first determining module 720 is configured to determine the CCEs occupied by all the candidate PDCCHs in the first search space; and determine the non-overlapping CCEs occupied by the first search space according to the CCEs occupied by all the candidate PDCCHs; wherein, Each non-overlapping CCE occupied by the first search space corresponds to different CCE indexes.
  • the above-mentioned first determining module 720 is configured to, according to the indication information, if for all the candidate PDCCHs in the first search space, the network device transmits the transmission in two different TCI states on the first time-frequency resource respectively For the candidate PDCCH, it is determined that the number of non-overlapping CCEs detected in the first search space is twice the number of non-overlapping CCEs actually occupied by the first search space.
  • the first search space includes all search spaces only associated with the first CORESET.
  • the first search space includes only a portion of the search space associated with the first CORESET.
  • the above-mentioned partial search space includes a search space that supports simultaneous transmission of at least two different TCI states.
  • the above-mentioned indication information indicates that: for some candidate PDCCHs in the first search space, the network device transmits the candidate PDCCHs in two different TCI states respectively on the first time-frequency resource.
  • the indication manner of the above-mentioned partial candidate PDCCH includes at least one of the following:
  • the aggregation level corresponding to the candidate PDCCH is used for indication.
  • FIG. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application. As shown in FIG. 8 , the above-mentioned terminal device may further include:
  • the configuration information receiving module 830 is configured to receive configuration information, where the configuration information includes at least one of the following:
  • the search space configured for the end device
  • the above-mentioned first determining module 720 is configured to determine the non-overlapping CCEs detected in the first search space among the multiple search spaces that need to be monitored in the first time unit according to the configuration information and the indication information. Number of.
  • the above-mentioned terminal device may further include:
  • the second determination module 840 is configured to determine the number of candidate PDCCHs that need to be detected in each of the multiple search spaces that need to be monitored in the first time unit, and the number of PDCCH candidates to be detected in other search spaces except the first search space. the number of non-overlapping CCEs;
  • the blind detection module 850 is used to detect the number of candidate PDCCHs that need to be detected in each search space, the number of non-overlapping CCEs detected in each search space, and the terminal equipment according to the multiple search spaces that need to be monitored in the first time unit.
  • the maximum blind detection capability is determined, and the search space that can be blindly detected is determined; the search space that can be blindly detected is blindly detected.
  • the above-mentioned maximum blind detection capability includes the maximum number of candidate PDCCHs and the maximum number of non-overlapping CCEs;
  • the above-mentioned blind detection module 850 is used to sort the multiple search spaces that need to be monitored in the first time unit according to the identification; when the maximum number of candidate PDCCHs is greater than or equal to the first N-1 search spaces The sum of the number of candidate PDCCHs to be detected and the maximum number of non-overlapping CCEs are greater than or equal to the sum of the numbers of non-overlapping CCEs detected in the first N-1 search spaces, and the maximum number of candidate PDCCHs is less than the number of the first N search spaces to be detected.
  • the search space for blind detection includes the first N-1 search spaces; wherein , N is an integer in the range of 2 to M, and M is the number of search spaces that need to be monitored in the first time unit.
  • the above-mentioned blind detection module sorts all search spaces; or sorts search spaces associated with CORESETs having a set of identical identifiers.
  • the above-mentioned first time unit includes a time slot and/or a time span.
  • FIG. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present application, including:
  • the indication information sending module 910 is used for sending indication information, the indication information is used for the terminal device to determine the number of non-overlapping CCEs detected in each first search space in a plurality of search spaces that need to be monitored in the first time unit; in,
  • the indication information indicates: the network device transmits at least one candidate PDCCH in the first search space through at least two different TCI states on the first time-frequency resource; the first search space is associated with the first CORESET, and the first CORESET is associated with At least 2 different TCI status associations;
  • the first time-frequency resource is jointly determined by the first search space and the first CORESET.
  • the first search space includes all search spaces only associated with the first CORESET.
  • the first search space includes only a part of the search space associated with the first CORESET.
  • the above-mentioned partial search space includes a search space that supports simultaneous transmission of at least two different TCI states.
  • the above-mentioned indication information indicates that: for some candidate PDCCHs in the first search space, the network device transmits the candidate PDCCHs in two different TCI states respectively on the first time-frequency resource.
  • the indication manner of the above-mentioned partial candidate PDCCH includes at least one of the following:
  • the aggregation level corresponding to the candidate PDCCH is used for indication.
  • FIG. 10 is a schematic structural diagram of a network device 1000 according to an embodiment of the present application. As shown in Figure 10, the above network device may further include:
  • the configuration information sending module 1020 is configured to send configuration information to the terminal device, where the configuration information includes at least one of the following:
  • the search space configured for the end device
  • FIG. 11 is a schematic structural diagram of a communication device 1100 according to an embodiment of the present application.
  • the communication device 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 1100 may further include a memory 1120 .
  • the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in the embodiments of the present application.
  • the memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.
  • the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.
  • the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.
  • the transceiver 1130 may include a transmitter and a receiver.
  • the transceiver 1130 may further include an antenna, and the number of the antenna may be one or more.
  • the communication device 1100 may be a terminal device in this embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the terminal device in each method in this embodiment of the present application, which is not repeated here for brevity.
  • the communication device 1100 may be a network device in this embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the network device in each method in this embodiment of the present application, which is not repeated here for brevity.
  • FIG. 12 is a schematic structural diagram of a chip 1200 according to an embodiment of the present application.
  • the chip 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 1200 may further include a memory 1220 .
  • the processor 1210 may call and run a computer program from the memory 1220 to implement the methods in the embodiments of the present application.
  • the memory 1220 may be a separate device independent of the processor 1210, or may be integrated in the processor 1210.
  • the chip 1200 may further include an input interface 1230 .
  • the processor 1210 can control the input interface 1230 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1200 may further include an output interface 1240 .
  • the processor 1210 may control the output interface 1240 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.
  • the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • the general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.
  • the memory mentioned above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM).
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part 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 the present application are generated.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.
  • the available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)), and the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a Solid State Disk (SSD)
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

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Abstract

本申请实施例涉及确定搜索空间的方法、终端设备和网络设备,其中方法包括,终端设备接收指示信息,该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与至少2个不同的TCI状态关联;其中,第一时频资源由第一搜索空间和第一CORESET共同确定;根据该指示信息,终端设备确定在第一时间单元上需要侦听的多个搜索空间中,该第一搜索空间中检测的无重叠CCE的数目;其中,第一时间单元在该第一时频资源范围内。本申请实施例可以确定multi-TRP传输PDCCH的情况下搜索空间中检测的无重叠CCE的数目。

Description

确定搜索空间的方法、终端设备和网络设备 技术领域
本申请涉及通信领域,并且更具体地,涉及确定搜索空间的方法、终端设备和网络设备。
背景技术
新无线(NR,New Radio)通信技术中基于多发送接收点(multi-TRP,multi-Transmission/Reception Point)进行了物理下行控制信道(PDCCH,Physical Downlink Control CHannel)增强,其中支持的一种传输方式为多个TRP通过时频资源进行PDCCH的传输。在多个TRP通过时频资源进行PDCCH的传输时,该时频资源上会通过两个对应不同传输配置指示(TCI,Transmission Configuration Indicator)状态(state)的TRP传输相同的PDCCH,此时如何确定包含这类候选PDCCH的搜索空间中检测的无重叠控制信道单元(CCE,Control-Channel Element)的数目,需要进行标准化。
发明内容
本申请实施例提供确定搜索空间的方法、终端设备和网络设备,可以确定multi-TRP传输PDCCH的情况下搜索空间中检测的无重叠CCE的数目。
本申请实施例提出一种确定搜索空间的方法,包括:
终端设备接收指示信息,该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输该第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与该至少2个不同的TCI状态关联;
其中,该第一时频资源由第一搜索空间和第一CORESET共同确定;
根据该指示信息,终端设备确定在第一时间单元上需要侦听的多个搜索空间中,该第一搜索空间中检测的无重叠CCE的数目;其中,第一时间单元在第一时频资源范围内。
本申请实施例还提出一种确定搜索空间的方法,包括:
网络设备向终端设备发送指示信息,该指示信息用于终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与该至少2个不同的TCI状态关联;
其中,该第一时频资源由第一搜索空间和第一CORESET共同确定。
本申请实施例还提出一种终端设备,包括:
指示信息接收模块,用于接收指示信息,该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输该第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,第一CORESET与该至少2个不同的TCI状态关联;
其中,该第一时频资源由第一搜索空间和第一CORESET共同确定;
第一确定模块,用于根据该指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,该第一搜索空间中检测的无重叠CCE的数目;其中,第一时间单元在该第一时频资源范围内。
本申请实施例还提出一种网络设备,包括:
指示信息发送模块,用于发送指示信息,该指示信息用于终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输该第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与至少2个不同的TCI状态关联;
其中,该第一时频资源由第一搜索空间和第一CORESET共同确定。
本申请实施例中,终端设备采用接收到的指示信息,可以确定与关联了至少2个TCI状态的CORESET关联的搜索空间中检测的无重叠CCE的数目,以便确定可以进行盲检测的搜索空间。
附图说明
图1是本申请实施例的应用场景的示意图。
图2是根据本申请实施例的一种确定搜索空间的方法200的示意性流程图。
图3是根据本申请实施例的一种确定搜索空间的方法中,第一搜索空间中检测的无重叠CCE的数目的确定方式300的流程图。
图4是根据本申请实施例的一种确定搜索空间的方法400的示意性流程图。
图5是本申请实施例中SS 1的候选PDCCH所占的CCE示意图。
图6是根据本申请实施例的一种确定搜索空间的方法600的示意性流程图。
图7是根据本申请实施例的终端设备700结构示意图。
图8是根据本申请实施例的终端设备800结构示意图。
图9是根据本申请实施例的网络设备900结构示意图。
图10是根据本申请实施例的网络设备1000结构示意图。
图11是根据本申请实施例的通信设备1100示意性结构图;
图12是根据本申请实施例的芯片1200的示意性结构图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述。
需要说明的是,本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。同时描述的“第一”、“第二”描述的对象可以相同,也可以不同。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新无线(New Radio,NR)系统、NR系统的演进系统、免授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、免授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、下一代通信(5th-Generation,5G)系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(Device to Device,D2D)通信,机器到机器(Machine to Machine,M2M)通信,机器类型通信(Machine Type Communication,MTC),以及车辆间(Vehicle to Vehicle,V2V)通信等,本申请实施例也可以应用于这些通信系统。
可选地,本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation,CA)场景,也可以应用于双连接(Dual Connectivity,DC)场景,还可以应用于独立(Standalone,SA)布网场景。
本申请实施例对应用的频谱并不限定。例如,本申请实施例可以应用于授权频谱,也可以应用于免授权频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例,其中: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、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等。 终端设备可以是WLAN中的站点(STAION,ST),可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及下一代通信系统,例如,NR网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
网络设备可以是用于与移动设备通信的设备,网络设备可以是WLAN中的接入点(Access Point,AP),GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备等。
在本申请实施例中,网络设备为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
图1示例性地示出了一个网络设备110和两个终端设备120,可选地,该无线通信系统100可以包括多个网络设备110,并且每个网络设备110的覆盖范围内可以包括其它数量的终端设备120,本申请实施例对此不做限定。本申请实施例可以应用于一个终端设备120与一个网络设备110,也可以应用于一个终端设备120与另一个终端设备120。
可选地,该无线通信系统100还可以包括移动性管理实体(Mobility Management Entity,MME)、接入与移动性管理功能(Access and Mobility Management Function,AMF)等其他网络实体,本申请实施例对此不作限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“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。
应理解,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。
在本申请实施例的描述中,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。
为便于理解本申请实施例的技术方案,以下对本申请实施例的相关技术进行说明,以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。
下行控制信道包括控制信道单元(CCE,Control-Channel Element)、搜索空间(Search Space)、资源单元组(REG,Resource-Element Group)、资源单元组束(REG bundle)和控制资源集合(CORESET,control resource set)等。
CCE是构成PDCCH的基本单位,占用频域上6个REG。一个给定的PDCCH可由1个、2个、4个、8个和16个CCE构成,构成PDCCH的CCE数量被称为聚合等级(AL,Aggregation Level)。
搜索空间(SS,Search Space)是某个聚合等级下候选PDCCH(PDCCH candidate)的集合,候选PDCCH也可以称为PDCCH候选。基站实际发送的PDCCH的聚合等级随时间可变,而且由于没有相关信令告知UE,因此UE需在不同聚合等级下盲检测(盲检测也可以称为盲检)PDCCH,其中待盲检测的PDCCH称为候选PDCCH。
每个搜索空间关联一个控制资源集合(CORESET,Control Resource Set),不同搜索空间可以关联相同或不同的CORESET。CORESET指定了搜索空间中的候选PDCCH所在的频域位置和时域符号个数。搜索空间和CORESET确定了进行PDCCH盲检测的时频资源范围,PDCCH只会在搜索空间和CORESET确定的时频资源范围内传输。终端设备可以支持多个CORESET,终端设备支持的CORESET通过配置信息确定。
在NR技术中,为终端设备配置的候选PDCCH可以超过UE盲检测能力的上限,此时UE根据预定义的机制在配置的候选PDCCH集合内确定配置的候选PDCCH的子集作为待检测的候选PDCCH集合。
为了在配置的候选PDCCH集合内确定待检测的子集,需要定义UE的最大盲检测能力,其中,最大盲检测能力包括每个时隙或每个时间跨度(span)内终端设备能够检测的最大候选PDCCH数和最大无重叠CCE(non-overlapped CCE)数目。
在已有的技术中,由于每个CORESET同时只能激活一个TCI state,因此每个CORESET所对应的搜索空间只会有一个TRP进行PDCCH的传输。但是对于基于multi-TRP传输的PDCCH,一个CORESET可以关联2个TCI states进行PDCCH传输,因此多个TRP可以通过同一个CORESET进行PDCCH的SFN传输,此时多个TRP占用了相同的CCE;面对这种情况,终端设备在进行盲检测时如何计算这部分的CCE数目,是当前需要解决的问题。
在本申请实施例中,针对基于multi-TRP传输PDCCH的应用场景,终端设备能够确定搜索空间对应的无重叠CCE的数量,并基于此确定进行PDCCH盲检测的搜索空间。
本申请实施例提出一种确定搜索空间的方法,图2是根据本申请实施例的一种确定搜索空间的方法200的示意性流程图,该方法可选地可以应用于图1所示的系统,利用应用于图1中的终端设备,但并不仅限于此。该方法包括以下内容的至少部分内容:
S210:终端设备接收指示信息,该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与该至少2个不同的TCI状态关联;
其中,该第一时频资源由该第一搜索空间和该第一CORESET共同确定;
S220:根据指示信息,终端设备确定在第一时间单元上需要侦听的多个搜索空间中,该第一搜索空间中检测的无重叠CCE的数目;其中,该第一时间单元在该第一时频资源范围内。
其中,上述第一搜索空间是仅关联了一个CORESET的搜索空间。
上述第一时间单元可以包括时隙(slot)和/或时间跨度(span)。
终端设备在确定第一搜索空间中检测的无重叠CCE的数目时,除了根据上述指示信息、还可以结合预先收到的配置信息进行确定。该配置信息至少包括以下至少一项:
为终端设备配置的搜索空间;
为终端设备配置的CORESET;
搜索空间与CORESET的对应关系;
为终端设备配置的CORESET中的第一CORESET。
图3是根据本申请实施例的一种确定搜索空间的方法中,第一搜索空间中检测的无重叠CCE的数目的确定方式300流程图。如图3所示,在一些实施方式中,第一搜索空间中检测的无重叠CCE的数目的确定方式包括:
S310:确定第一搜索空间占用的无重叠CCE;其中,该第一搜索空间占用的无重叠CCE的包括:第一搜索空间配置的所有候选PDCCH占用的CCE;
S320:根据上述指示信息,确定第一搜索空间占用的各个无重叠CCE中,每个无重叠CCE对应的TCI状态的个数;
S330:根据上述每个无重叠CCE对应的TCI状态的个数,确定该第一搜索空间中检测的无重叠CCE的数目。
可选地,上述S310中,终端设备确定第一搜索空间占用的无重叠CCE,包括:终端设备确定第一搜索空间中所有候选PDCCH占用的CCE;根据所有候选PDCCH占用的CCE,确定该第一搜索空间占用的无重叠CCE;其中,该第一搜索空间占用的各个无重叠CCE对应不同的CCE索引。
例如,搜索空间SS 0配置有2个候选PDCCH,2个候选PDCCH的标识分别为PDCCH 1和PDCCH 2。其中,PDCCH 1占用8个CCE,其索引分别为CCE 0~CCE 7;PDCCH 2占用4个CCE,其索引分别为CCE 6~CCE 9。那么,搜索空间SS 0占用的无重叠CCE包括其配置的所有候选PDCCH(即PDCCH 1和PDCCH 2)占用的CCE,即CCE 0~CCE 9;其中,各个无重叠CCE对应不同的CCE索引。
再如,搜索空间SS 1配置有3个候选PDCCH,3个候选PDCCH的标识分别为PDCCH 1、PDCCH 2和PDCCH 3。其中,PDCCH 1占用8个CCE,其索引分别为CCE 0~CCE 7;PDCCH 2占用2个CCE,其索引分别为CCE 6~CCE 7;PDCCH 3占用8个CCE,其索引分别为CCE 2~CCE 9;那么,搜索空间SS 1占用的无重叠CCE包括其配置的所有候选PDCCH(即PDCCH 1、PDCCH 2和PDCCH 3)占用的CCE,即CCE 0~CCE 9;其中,各个无重叠CCE对应不同的CCE索引。
进一步地,如果搜索空间SS 0仅与CORESET 1关联,其中CORESET 1与2个TCI状态关联,其标识分别为TCI state 1和TCI state 2。终端设备接收到的指示信息指示:在第一时频资源上,通过TCI state 1和TCI state 2同时传输搜索空间SS 0中的PDCCH 1。其中,前述第一时频资源由SS1和CORESET 1共同确定。另外,根据其他的配置信息,TCI state 1传输搜索空间SS 0中的PDCCH 2。
基于上述指示信息,根据上述图3所示的方式,终端设备首先确定SS 0占用的无重叠CCE中各个无重叠CCE分别对应的TCI状态的个数。具体包括:SS 0占用的CCE 0~CCE 7分别对应的TCI状态的个数为2(CCE 0~CCE 7分别对应TCI state 1和TCI state 2),SS 0占用的CCE 8~CCE 9分别对应的TCI状态的个数为1(CCE 8~CCE 9分别对应TCI state 1)。根据前述个数,终端设备可以确定SS 0中检测的无重叠CCE的数目为8*2+2。即,如果某个无重叠CCE对应N(N为大于或等于2的自然数)个TCI状态,则在计算包含该无重叠CCE的搜索空间中检测的无重叠CCE的数目时,将该无重叠CCE重复计算N次;如果某个无重叠CCE对应1个TCI状态,则在计算包含该无重叠CCE的搜索空间中检测的无重叠CCE的数目时,将该无重叠CCE计算1次。
在一些实施方式中,如果上述指示信息指示对于第一搜索空间中的所有候选PDCCH,分别在第一时频资源上通过2个不同的TCI状态传输各个候选PDCCH,则可以确定第一搜索空间中检测的无重叠CCE的数目为第一搜索空间实际占用的无重叠CCE的数目的2倍。
仍以上述SS 0为例,SS 0实际占用的无重叠CCE的数目为10(包括CCE 0~CCE 9), 如果上述指示信息指示分别在第一时频资源上通过2个不同的TCI状态传输SS 0中的各个候选PDCCH,即通过TCI state 1和TCI state 2同时传输SS 0中的PDCCH 1和PDCCH 2;则可以确定SS 0实际占用的CCE 0~CCE 9分别对应的TCI状态的个数为2,因此可以确定SS 0中检测的无重叠CCE的数目为其实际占用的无重叠CCE的数目(即10)的2倍。
上述指示信息至少可以采用以下三种方式:
第一种,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
例如,网络设备为终端设备配置了一组搜索空间(包括SS 0~SS 5)和一组CORESET,其中SS 0和SS 2与CORESET 0关联,CORESET 0与至少2个不同的TCI状态关联(即CORESET 0是上述的第一CORESET)。在这种配置下,上述指示信息可以包括:在第一时频资源上通过该至少2个不同的TCI状态传输与CORESET 0关联的所有搜索空间中的候选PDCCH。也就是说,该指示信息中不需要指示出SS 0和SS 2的索引信息。
第二种,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的部分搜索空间。该部分搜索空间可以包括支持至少2个不同的TCI状态同时传输的搜索空间。
例如,在与上述第一种方式采用同样配置的情况下,上述指示信息可以包括:在第一时频资源上通过该至少2个不同的TCI状态传输与CORESET 0关联的部分搜索空间中的候选PDCCH。也就是说,指示信息中需要明确指示出搜索空间的索引信息;如果指示信息中指示了某个搜索空间的索引信息,并且该搜索空间与关联了至少2个不同TCI状态的CORESET相关联,则在第一时频资源上通过该至少2个不同的TCI状态传输该搜索空间中的候选PDCCH。
在一个示例中,指示信息指示SS 2和SS 3可以在关联的CORESET关联了两个TCI state时通过两个TCI state占用相同的时频资源进行同一个PDCCH的传输。其它SS在关联的CORESET关联了两个TCI state时通过默认的其中一个TCI state进行PDCCH的传输。根据上述配置信息,由于SS 3关联的CORESET仅关联1个TCI state,因此仅通过1个TCI state传输SS 3中的候选PDCCH。
可以看出,上述两种方式的区别在于:第一种方式中,对于一个搜索空间,只要其关联的CORESET同时关联了两个TCI state,则在第一时频资源上通过这2个TCI state传输该搜索空间。第二种方式中,需要搜索空间和CORESET都配置采用2个TCI state;即对于一个搜索空间,只有其关联的CORESET同时关联了两个TCI state、并且该搜索空间是支持2个TCI state同时传输的搜索空间,才会在第一时频资源上通过这2个TCI state传输该搜索空间。
上述两种方式是以搜索空间为粒度进行指示的,本申请实施例还可以以候选PDCCH为粒度进行指示,即如下的第三种方式。
第三种,指示信息可以包括:对于第一搜索空间中的部分候选PDCCH,分别在第一时频资源上通过2个不同的TCI状态传输该候选PDCCH。
例如,在与上述第一种方式采用同样配置的情况下,上述指示信息可以包括:分别在第一时频资源上通过该2个不同的TCI状态传输SS 0中的PDCCH 1。对于SS 0中的其他候选PDCCH,由于该指示信息中没有指示,则默认仅通过一个TCI状态传输这些候选PDCCH。
在上述指示信息中,该部分候选PDCCH的指示方式包括以下至少一项:
采用候选PDCCH的标识进行指示;
采用候选PDCCH对应的聚合等级进行指示。
本申请实施例还可以采用其他的方式指示哪些候选PDCCH属于上述的部分候选PDCCH,本申请实施例对具体的指示方式不做限制。
采用上述指示信息和接收到的配置信息,终端设备可以确定出在该第一时间单元上需 要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目。图4是根据本申请实施例的一种确定搜索空间的方法400的示意性流程图,如图4所示,在上述步骤S220之后还可以包括:
S430:终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个搜索空间中需要检测的候选PDCCH的数目,以及除第一搜索空间以外的其他搜索空间中检测的无重叠CCE的数目;
S440:终端设备根据在第一时间单元上需要侦听的多个搜索空间中,各个搜索空间中需要检测的候选PDCCH的数目、各个搜索空间中检测的无重叠CCE的数目以及终端设备的最大盲检测能力,确定可以进行盲检测的搜索空间;
S450:终端设备对可以进行盲检测的搜索空间进行盲检测。
其中,步骤S430的实现方式与现有技术中的实现方式相同,在此不再赘述。
可选地,步骤S440可以包括:
终端设备将在第一时间单元上需要侦听的多个搜索空间按照搜索空间的标识进行排序;可选地,终端设备可以将所有搜索空间进行排序;或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。
在最大候选PDCCH数大于或等于前N-1个搜索空间中需要检测的候选PDCCH的数目之和、最大无重叠CCE数大于或等于前N-1个搜索空间中检测的无重叠CCE的数目之和,并且最大候选PDCCH数小于前N个搜索空间中需要检测的候选PDCCH的数目之和、或者最大无重叠CCE数小于前N个搜索空间中检测的无重叠CCE的数目之和时,确定可以进行盲检测的搜索空间包括前N-1个搜索空间;其中,N为2至M范围内的整数,M为在第一时间单元上需要侦听的搜索空间的个数。
例如,在第一时间单元上需要侦听5个搜索空间,将这5个搜索空间按照标识进行排序。首先将排序后第一个搜索空间中需要检测的候选PDCCH的数目与最大候选PDCCH数比较,并将第一个搜索空间中检测的无重叠CCE的数目与最大无重叠CCE数比较;如果都没超过,则将排序后第一个搜索空间和第二个搜索空间中需要检测的候选PDCCH的数目之和与最大候选PDCCH数比较,将第一个搜索空间和第二个搜索空间中检测的无重叠CCE的数目之和与最大无重叠CCE数比较,依次进行。如果需要检测的候选PDCCH的数目超过最大候选PDCCH数、或者无重叠CCE的数目超过最大无重叠CCE数,则表明此时已经超出了终端设备的最大盲检测能力,则终止比较,将未超出终端设备最大盲检测能力的前几个搜索空间确定为可以进行盲检测的搜索空间。
需要说明的是,上述步骤S430和步骤S440中,确定搜索空间中需要检测的候选PDCCH的数目和检测的无重叠CCE的数目与确定可以进行盲检测的搜索空间的步骤可以交替执行。例如,在第一时间单元上需要侦听5个搜索空间的情况下,先确定第一个搜索空间中需要检测的候选PDCCH的数目及检测的无重叠CCE的数目,将其与终端设备的最大盲检测能力作比较;如果没有超出终端设备的最大盲检测能力,再确定第二个搜索空间中需要检测的候选PDCCH的数目及检测的无重叠CCE的数目,将第一个搜索空间和第二个搜索空间中需要检测的候选PDCCH的数目之和及中检测的无重叠CCE的数目之和与终端设备的最大盲检测能力作比较;如果没有超出终端设备的最大盲检测能力,再确定第三个搜索空间中需要检测的候选PDCCH的数目及检测的无重叠CCE的数目,如此依次进行。
或者,上述步骤S430和步骤S440中,也可以先将第一时间单元上需要侦听的所有搜索空间中需要检测的候选PDCCH的数目和检测的无重叠CCE的数目分别确定出来,再确定可以进行盲检测的搜索空间。例如,在第一时间单元上需要侦听5个搜索空间的情况下,分别确定排序后第一个至第五个搜索空间中需要检测的候选PDCCH的数目及检测的无重叠CCE的数目。首先将第一个搜索空间中需要检测的候选PDCCH的数目及检测的无重叠CCE的数目与终端设备的最大盲检测能力作比较;如果没有超出终端设备的最大盲检测能 力,则计算第一个搜索空间和第二个搜索空间中需要检测的候选PDCCH的数目之和、以及第一个搜索空间和第二个搜索空间检测的无重叠CCE的数目之和,将其与终端设备的最大盲检测能力作比较;如果没有超出终端设备的最大盲检测能力,则计算第一、二、三个搜索空间中需要检测的候选PDCCH的数目之和、以及第一、二、三个搜索空间检测的无重叠CCE的数目之和,将其与终端设备的最大盲检测能力作比较,如此依次进行。
以下举具体的实施例详细介绍本申请。
实施例1:
步骤1:网络侧为终端配置一组搜索空间(对应search space id为0-5)和一组CORESET,其中每个SS都关联了一个CORESET。其中搜索空间SS 2关联的CORESET 0同时激活了两个TCI state。
步骤2:网络侧指示分别在第一时频资源上通过这两个TCI state传输同时激活了两个TCI state的CORESET所关联的SS中的PDCCH candidate。
步骤3:网络侧选择SS 2中的其中一个PDCCH candidate发送PDCCH。
步骤4:终端确定第一时间单元上需要侦听的搜索空间为M(本例中M=6)个,对应的搜索空间id为0,1,2,3,4,5。
步骤5:终端按照搜索空间的id以及搜索空间中配置的侦听周期和侦听符号(symbol)确定每个搜索空间需要检测的PDCCH candidate数目以及检测的CCE数目。其中,根据上述配置和指示信息,终端确定在第一时频资源上通过2个TCI state传输搜索空间2中的PDCCH candidate,并确定搜索空间2中检测的无重叠CCE的数目为搜索空间2实际占用的无重叠CCE个数的2倍。
步骤6:终端按照搜索空间id对搜索空间进行排序。终端可以对所有的搜索空间进行排序,或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。在终端计算出前N-1个(N大于或等于2,并且N小于或等于M)搜索空间中需要检测的候选PDCCH的数目之和以及检测的无重叠的CCE的总数之和分别小于时间单元内的最大候选PDCCH数和最大无重叠CCE数,并且前N个搜索空间中需要检测的候选PDCCH的数目之和大于时间单元内的最大候选PDCCH数、或者前N个搜索空间检测的无重叠的CCE的数目之和大于时间单元内的最大无重叠CCE数时,终端停止对N+1到M个搜索空间的判断,确定前N-1个搜索空间为可以进行盲检测的搜索空间。
步骤7:终端根据步骤6的计算结果,对前N-1个搜索空间进行相应PDCCH的盲检测。
实施例2:
步骤1:网络侧为终端配置一组搜索空间(对应search space id为0-5)和一组CORESET,其中每个SS都关联了一个CORESET。其中搜索空间SS 0和搜索空间SS 2关联的CORESET 0同时激活了两个TCI state,其它搜索空间关联的CORESET同时仅激活了一个TCI state。
步骤2:网络侧指示SS 2和SS 3在关联的CORESET激活了两个TCI state时,通过两个TCI state占用第一时频资源进行同一个PDCCH的传输。其它SS在关联的CORESET激活了两个TCI state时通过默认的通过其中一个TCI state进行PDCCH的传输。
步骤3:网络侧选择SS 2中的其中一个PDCCH candidate发送PDCCH。
步骤4:终端确定第一时间单元上需要侦听的搜索空间为M个,对应的搜索空间id为0,1,2,3,4,5。
步骤5:终端按照搜索空间的id以及搜索空间中配置的侦听周期和侦听symbol确定每个搜索空间需要检测的PDCCH candidate数目以及检测的CCE数目。其中,根据上述配置和指示信息,终端确定在第一时频资源上通过2个TCI state传输SS 2中的PDCCH candidate,并确定SS 2中检测的无重叠CCE的数目为SS 2实际占用的无重叠CCE个数的 2倍。由于搜索空间3的关联的CORESET仅激活了1个TCI state,终端确定仅通过1个TCI state传输搜索空间3中的PDCCH candidate,并确定搜索空间3中检测的无重叠CCE的数目等于搜索空间3实际占用的无重叠CCE个数。
步骤6:终端按照搜索空间id对搜索空间进行排序。终端可以对所有的搜索空间进行排序,或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。在终端计算出前N-1个(N大于或等于2,并且N小于或等于M)搜索空间中需要检测的候选PDCCH的数目之和以及检测的无重叠的CCE的总数之和分别小于时间单元内的最大候选PDCCH数和最大无重叠CCE数,并且前N个搜索空间中需要检测的候选PDCCH的数目之和大于时间单元内的最大候选PDCCH数、或者前N个搜索空间检测的无重叠的CCE的数目之和大于时间单元内的最大无重叠CCE数时,终端停止对N+1到M个搜索空间的判断,确定前N-1个搜索空间为可以进行盲检测的搜索空间。
步骤7:终端根据步骤6的计算结果,对前N-1个搜索空间进行相应PDCCH的盲检测。
实施例3:
步骤1:网络侧为终端配置一组搜索空间(对应search space id为0-5)和一组CORESET,其中每个SS都关联了一个CORESET。其中搜索空间0和搜索空间SS 2关联的CORESET 0同时激活了两个TCI state。其它搜索空间关联的CORESET同时仅激活了一个TCI state。
步骤2:网络侧指示分别在第一时频资源上通过这两个TCI state传输SS 2中的某些PDCCH candidate或者某一个或某几个聚合等级的PDCCH candidate,通过1个TCI state传输SS2中的其他PDCCH candidate。
步骤3:网络侧选择SS 2中的其中一个PDCCH candidate发送PDCCH。
步骤4:终端确定第一时间单元上需要侦听的搜索空间为M个,对应的搜索空间id为0,1,2,3,4,5。
步骤5:终端按照搜索空间的id以及搜索空间中配置的侦听周期和侦听symbol确定每个搜索空间需要检测的PDCCH candidate数目以及检测的CCE数目。其中,根据上述配置和指示信息,在计算搜索空间2中检测的无重叠CCE数目时,确定对应2个TCI state的无重叠CCE的个数为X,确定对应1个TCI state的无重叠CCE的个数为Y,则可以确定搜索空间2中检测的无重叠CCE的数目=X*2+Y。
步骤6:终端按照搜索空间id对搜索空间进行排序。终端可以对所有的搜索空间进行排序,或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。在终端计算出前N-1个(N大于或等于2,并且N小于或等于M)搜索空间中需要检测的候选PDCCH的数目之和以及检测的无重叠的CCE的总数之和分别小于时间单元内的最大候选PDCCH数和最大无重叠CCE数,并且前N个搜索空间中需要检测的候选PDCCH的数目之和大于时间单元内的最大候选PDCCH数、或者前N个搜索空间中检测的无重叠的CCE的数目之和大于时间单元内的最大无重叠CCE数时,终端停止对N+1到M个搜索空间的判断,确定前N-1个搜索空间为可以进行盲检测的搜索空间。
步骤7:终端根据步骤6的计算结果,对前N-1个搜索空间进行相应PDCCH的盲检测。
需要说明的是,在上述实施方式中,是以在第一时频资源上通过2个不同的TCI状态传输第一搜索空间中的候选PDCCH为例进行介绍的。在本申请的其他实施方式中,指示信息可以指示在第一时频资源上通过2个以上不同的TCI状态传输第一搜索空间中的候选PDCCH;在这种情况下,终端设备确定第一搜索空间中检测的无重叠CCE的数目的方式与上述实施例中的方式相同。例如,如果第一搜索空间SS 1包括2个候选PDCCH,即PDCCH 0和PDCCH 1,其中PDCCH 0占用CCE 0~CCE 7,PDCCH 1占用CCE 6~CCE 13;上述指示信息指示在第一时频资源上存在3个不同的TCI状态(包括TCI状态1、TCI状 态2、TCI状态3)传输第一搜索空间SS 1中的PDCCH 0,在第一时频资源上存在2个不同的TCI状态(包括TCI状态3、TCI状态4)传输第一搜索空间SS 1中的PDCCH 1。根据该指示信息,终端设备可以确定CCE 0~CCE 5中的每个CCE分别对应的TCI状态的个数为3(即对应TCI状态1、TCI状态2、TCI状态3),CCE 6~CCE 7中的每个CCE分别对应的TCI状态的个数为4(即对应TCI状态1、TCI状态2、TCI状态3、TCI状态4),CCE 8~CCE 13中的每个CCE分别对应的TCI状态的个数为2(即对应TCI状态3、TCI状态4);根据前述个数,终端设备可以确定出SS 1对应的无重叠CCE的数目=6*3+2*4+6*2,即等于对应3个TCI状态的CCE的个数的3倍、对应4个TCI状态的CCE的个数的4倍、以及对应3个TCI状态的CCE的个数的2倍之和。
以下通过表格来做具体说明:参见表1,表1示出了5个SS(搜索空间),每个SS关联了一个唯一的CORESET id,所有搜索空间的侦听周期为5个slot(每隔5个slot侦听一次),并且偏移相同,也就是都在相同的slot(3,8,13)上进行PDCCH盲检测。因此,第一时间单元上需要侦听的搜索空间的个数为5。终端根据配置先确定每个搜索空间的侦听时刻,然后按照搜索空间的id大小、每个搜索空间内配置的PDCCH candidate(包括所有聚合等级的所有PDCCH candidate数目之和)数目以及每个搜索空间占用的无重叠的CCE数目来确定各个搜索空间中检测的无重叠CCE的数目,并进一步确定盲检测的搜索空间。
表1
Figure PCTCN2020135921-appb-000001
其中,一个搜索空间中不同PDCCH candidate之间占用的CCE可能重叠,本申请实施例将搜索空间中所有PDCCH candidate占用的对应不同CCE索引(index)的CCE作为该搜索空间占用的无重叠的CCE。图5是本申请实施例中SS 1的候选PDCCH所占的CCE示意图。如图5所示,搜索空间SS 1包括4个聚合等级的PDCCH candidate,每个聚合等级对应相应数量的CCE,该搜索空间中的不同PDCCH candidate之间存在CCE的重叠,该搜索空间占用的无重叠CCE的个数为24,即对应CCE 0~CCE 23。
参见表2,表2示出了5个SS(搜索空间),每个SS关联了一个唯一的CORESET id; 与表1不同的是,表5中不同SS的侦听的周期不同,因此此时在每个侦听时间点上需要侦听的SS不是所有的SS,而是需要根据具体的SS的侦听周期配置来确定。例如,在slot3上需要侦听的SS为SS1和SS3,此时仅需要计算SS1和SS3中检测的无重叠CCE的数目及需要检测的候选PDCCH的数目,并进一步确定盲检测的搜索空间。
表2
Figure PCTCN2020135921-appb-000002
另外,上述表1和表2中是以时间单位是slot为例进行介绍的,本申请实施例也可以采用span作为时间单元。例如,如果span的长度为3个符号,则表2中SS 2的侦听位置分别位于slot4、slot9、slot14的第二个span。
本申请实施例还提出一种确定搜索空间的方法,图6是根据本申请实施例的一种确定搜索空间的方法600的示意性流程图,该方法可选地可以应用于图1所示的系统,利用应用于图1中的网络设备,但并不仅限于此。该方法包括以下内容的至少部分内容:
S610:网络设备向终端设备发送指示信息,该指示信息用于终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与至少2个不同的TCI状态关联;
其中,该第一时频资源由该第一搜索空间和该第一CORESET共同确定。
可选地,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
可选地,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
可选地,上述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
可选地,上述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输候选PDCCH。
可选地,上述部分候选PDCCH的指示方式包括以下至少一项:
采用候选PDCCH的标识进行指示;
采用候选PDCCH对应的聚合等级进行指示。
可选地,上述方法还包括:网络设备向终端设备发送配置信息,配置信息包括以下至少一项:
为终端设备配置的搜索空间;
为终端设备配置的CORESET;
搜索空间与CORESET的对应关系;
为终端设备配置的CORESET中的第一CORESET。
本申请实施例还提出一种终端设备,图7是根据本申请实施例的终端设备700结构示意图,包括:
指示信息接收模块710,用于接收指示信息,该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与至少2个不同的TCI状态关联;
其中,该第一时频资源由该第一搜索空间和该第一CORESET共同确定;
第一确定模块720,用于根据该指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,该第一搜索空间中检测的无重叠CCE的数目;其中,该第一时间单元在该第一时频资源范围内。
在一些实施方式中,上述第一确定模块720用于,确定第一搜索空间占用的无重叠CCE;其中,第一搜索空间占用的无重叠CCE的包括:第一搜索空间配置的所有候选PDCCH占用的CCE;根据该指示信息,确定第一搜索空间占用的各个无重叠CCE中,每个无重叠CCE对应的TCI状态的个数;根据每个无重叠CCE对应的TCI状态的个数,确定该第一搜索空间中检测的无重叠CCE的数目。
在一些实施方式中,上述第一确定模块720用于,确定第一搜索空间中所有候选PDCCH占用的CCE;根据所有候选PDCCH占用的CCE,确定该第一搜索空间占用的无重叠CCE;其中,第一搜索空间占用的各个无重叠CCE对应不同的CCE索引。
在一些实施方式中,上述第一确定模块720用于,根据该指示信息,如果对于第一搜索空间中的所有候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输候选PDCCH,则确定该第一搜索空间中检测的无重叠CCE的数目为第一搜索空间实际占用的无重叠CCE的数目的2倍。
在一些实施方式中,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
在一些实施方式中,在指示信息中,第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
在一些实施方式中,上述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
在一些实施方式中,上述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH。
在一些实施方式中,上述部分候选PDCCH的指示方式包括以下至少一项:
采用候选PDCCH的标识进行指示;
采用候选PDCCH对应的聚合等级进行指示。
图8是根据本申请实施例的终端设备800结构示意图,如图8所示,上述终端设备还可以包括:
配置信息接收模块830,用于接收配置信息,配置信息包括以下至少一项:
为终端设备配置的搜索空间;
为终端设备配置的CORESET;
搜索空间与CORESET的对应关系;
为终端设备配置的CORESET中的第一CORESET。
在一些实施方式中,上述第一确定模块720,用于上述根据配置信息和指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,第一搜索空间中检测的无重叠CCE的数目。
如图8所示,上述终端设备还可以包括:
第二确定模块840,用于确定在第一时间单元上需要侦听的多个搜索空间中,各个搜 索空间中需要检测的候选PDCCH的数目,以及除第一搜索空间以外的其他搜索空间中检测的无重叠CCE的数目;
盲检测模块850,用于根据在第一时间单元上需要侦听的多个搜索空间中,各个搜索空间中需要检测的候选PDCCH的数目、各个搜索空间中检测的无重叠CCE的数目以及终端设备的最大盲检测能力,确定可以进行盲检测的搜索空间;对可以进行盲检测的搜索空间进行盲检测。
在一些实施方式中,上述最大盲检测能力包括最大候选PDCCH数和最大无重叠CCE数;
在一些实施方式中,上述盲检测模块850,用于将在第一时间单元上需要侦听的多个搜索空间按照标识进行排序;在最大候选PDCCH数大于或等于前N-1个搜索空间中需要检测的候选PDCCH的数目之和、最大无重叠CCE数大于或等于前N-1个搜索空间中检测的无重叠CCE的数目之和,并且最大候选PDCCH数小于前N个搜索空间中需要检测的候选PDCCH的数目之和、或者最大无重叠CCE数小于前N个搜索空间中检测的无重叠CCE的数目之和时,确定可以进行盲检测的搜索空间包括前N-1个搜索空间;其中,N为2至M范围内的整数,M为在第一时间单元上需要侦听的搜索空间的个数。
可选地,上述盲检测模块将所有搜索空间进行排序;或者,对与具有一组相同标识的CORESET所关联的搜索空间进行排序。
在一些实施方式中,上述第一时间单元包括时隙和/或时间跨度(span)。
应理解,根据本申请实施例的终端设备中的模块的上述及其他操作和/或功能分别为了实现图2的方法200中的终端设备的相应流程,为了简洁,在此不再赘述。
本申请实施例还提出一种网络设备,图9是根据本申请实施例的网络设备900结构示意图,包括:
指示信息发送模块910,用于发送指示信息,该指示信息用于终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
该指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;该第一搜索空间与第一CORESET关联,该第一CORESET与至少2个不同的TCI状态关联;
其中,该第一时频资源由该第一搜索空间和该第一CORESET共同确定。
在一些实施方式中,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
在一些实施方式中,在上述指示信息中,第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
在一些实施方式中,上述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
在一些实施方式中,上述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输候选PDCCH。
在一些实施方式中,上述部分候选PDCCH的指示方式包括以下至少一项:
采用候选PDCCH的标识进行指示;
采用候选PDCCH对应的聚合等级进行指示。
图10是根据本申请实施例的网络设备1000结构示意图。如图10所示,上述网络设备还可以包括:
配置信息发送模块1020,用于向终端设备发送配置信息,配置信息包括以下至少一项:
为终端设备配置的搜索空间;
为终端设备配置的CORESET;
搜索空间与CORESET的对应关系;
为终端设备配置的CORESET中的第一CORESET。
应理解,根据本申请实施例的网络设备中的模块的上述及其他操作和/或功能分别为了实现图6的方法600中的网络设备的相应流程,为了简洁,在此不再赘述。
图11是根据本申请实施例的通信设备1100示意性结构图。图11所示的通信设备1100包括处理器1110,处理器1110可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图11所示,通信设备1100还可以包括存储器1120。其中,处理器1110可以从存储器1120中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器1120可以是独立于处理器1110的一个单独的器件,也可以集成在处理器1110中。
可选地,如图11所示,通信设备1100还可以包括收发器1130,处理器1110可以控制该收发器1130与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器1130可以包括发射机和接收机。收发器1130还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备1100可为本申请实施例的终端设备,并且该通信设备1100可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备1100可为本申请实施例的网络设备,并且该通信设备1100可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
图12是根据本申请实施例的芯片1200的示意性结构图。图12所示的芯片1200包括处理器1210,处理器1210可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图12所示,芯片1200还可以包括存储器1220。其中,处理器1210可以从存储器1220中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器1220可以是独立于处理器1210的一个单独的器件,也可以集成在处理器1210中。
可选地,该芯片1200还可以包括输入接口1230。其中,处理器1210可以控制该输入接口1230与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
可选地,该芯片1200还可以包括输出接口1240。其中,处理器1210可以控制该输出接口1240与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
可选地,该芯片可应用于本申请实施例中的终端设备,并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
上述提及的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、现成可编程门阵列(field programmable gate array,FPGA)、专用集成电路(application specific integrated circuit,ASIC)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等。其中,上述提到的通用处理器可以是微处理器或者也可以是任何常规的处理器等。
上述提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM, EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM)。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
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。该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该计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。该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。该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,该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。该计算机可读存储介质可以是计算机能够存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。该可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
应理解,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。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
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该权利要求的保护范围为准。

Claims (54)

  1. 一种确定搜索空间的方法,包括:
    终端设备接收指示信息,所述指示信息指示:网络设备在第一时频资源上通过至少2个不同的传输配置指示TCI状态传输第一搜索空间中的至少一个候选物理下行控制信道PDCCH;所述第一搜索空间与第一控制资源集合CORESET关联,所述第一CORESET与所述至少2个不同的TCI状态关联;
    其中,所述第一时频资源由所述第一搜索空间和所述第一CORESET共同确定;
    根据所述指示信息,所述终端设备确定在第一时间单元上需要侦听的多个搜索空间中,所述第一搜索空间中检测的无重叠控制信道单元CCE的数目;其中,所述第一时间单元在所述第一时频资源范围内。
  2. 根据权利要求1所述的方法,其中,所述根据所述指示信息,所述终端设备确定在第一时间单元上需要侦听的多个搜索空间中,所述第一搜索空间中检测的无重叠CCE的数目,包括:
    终端设备确定所述第一搜索空间占用的无重叠CCE;其中,所述第一搜索空间占用的无重叠CCE的包括:所述第一搜索空间配置的所有候选PDCCH占用的CCE;
    根据所述指示信息,确定所述第一搜索空间占用的各个无重叠CCE中,每个无重叠CCE对应的TCI状态的个数;
    根据所述每个无重叠CCE对应的TCI状态的个数,确定所述第一搜索空间中检测的无重叠CCE的数目。
  3. 根据权利要求2所述的方法,其中,所述终端设备确定所述第一搜索空间占用的无重叠CCE,包括:
    所述终端设备确定所述第一搜索空间中所有候选PDCCH占用的CCE;
    根据所述所有候选PDCCH占用的CCE,确定所述第一搜索空间占用的无重叠CCE;其中,所述第一搜索空间占用的各个无重叠CCE对应不同的CCE索引。
  4. 根据权利要求1至3任一所述的方法,其中,所述第一搜索空间中检测的无重叠CCE的数目的确定方式,包括:
    根据所述指示信息,如果对于第一搜索空间中的所有候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH,则确定所述第一搜索空间中检测的无重叠CCE的数目为所述第一搜索空间实际占用的无重叠CCE的数目的2倍。
  5. 根据权利要求1至4任一所述的方法,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
  6. 根据权利要求1至4任一所述的方法,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
  7. 根据权利要求6所述的方法,其中,所述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
  8. 根据权利要求1至7任一所述的方法,其中,所述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH。
  9. 根据权利要求8所述的方法,其中,所述部分候选PDCCH的指示方式包括以下至少一项:
    采用候选PDCCH的标识进行指示;
    采用候选PDCCH对应的聚合等级进行指示。
  10. 根据权利要求1至9任一所述的方法,还包括:所述终端设备接收配置信息,所述配置信息包括以下至少一项:
    为所述终端设备配置的搜索空间;
    为所述终端设备配置的CORESET;
    搜索空间与CORESET的对应关系;
    所述为所述终端设备配置的CORESET中的第一CORESET。
  11. 根据权利要求10所述的方法,其中,终端设备根据所述配置信息和所述指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,所述第一搜索空间中检测的无重叠CCE的数目。
  12. 根据权利要求1至11任一所述的方法,还包括:
    所述终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个搜索空间中需要检测的候选PDCCH的数目,以及除所述第一搜索空间以外的其他搜索空间中检测的无重叠CCE的数目;
    所述终端设备根据所述在第一时间单元上需要侦听的多个搜索空间中,所述各个搜索空间中需要检测的候选PDCCH的数目、各个搜索空间中检测的无重叠CCE的数目以及所述终端设备的最大盲检测能力,确定可以进行盲检测的搜索空间;
    所述终端设备对所述可以进行盲检测的搜索空间进行盲检测。
  13. 根据权利要求12所述的方法,其中,所述最大盲检测能力包括最大候选PDCCH数和最大无重叠CCE数;
    所述终端设备根据所述各个搜索空间中需要检测的候选PDCCH的数目、所述各个搜索空间中检测的无重叠CCE的数目以及所述终端设备的最大盲检测能力,确定可以进行盲检测的搜索空间,包括:
    将所述在第一时间单元上需要侦听的多个搜索空间按照标识进行排序;
    在所述最大候选PDCCH数大于或等于前N-1个搜索空间中需要检测的候选PDCCH的数目之和、所述最大无重叠CCE数大于或等于前N-1个搜索空间中检测的无重叠CCE的数目之和,并且所述最大候选PDCCH数小于前N个搜索空间中需要检测的候选PDCCH的数目之和、或者所述最大无重叠CCE数小于前N个搜索空间中检测的无重叠CCE的数目之和时,确定所述可以进行盲检测的搜索空间包括所述前N-1个搜索空间;其中,所述N为2至M范围内的整数,所述M为所述在第一时间单元上需要侦听的搜索空间的个数。
  14. 根据权利要求13所述的方法,其中,所述排序包括:
    对所有的搜索空间进行排序,或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。
  15. 根据权利要求1至14任一所述的方法,其中,所述第一时间单元包括时隙和/或时间跨度。
  16. 一种确定搜索空间的方法,包括:
    网络设备向终端设备发送指示信息,所述指示信息用于所述终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
    所述指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;所述第一搜索空间与第一CORESET关联,所述第一CORESET与所述至少2个不同的TCI状态关联;
    其中,所述第一时频资源由所述第一搜索空间和所述第一CORESET共同确定。
  17. 根据权利要求16所述的方法,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
  18. 根据权利要求16所述的方法,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
  19. 根据权利要求18所述的方法,其中,所述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
  20. 根据权利要求16所述的方法,其中,所述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH。
  21. 根据权利要求20所述的方法,其中,所述部分候选PDCCH的指示方式包括以下至少一项:
    采用候选PDCCH的标识进行指示;
    采用候选PDCCH对应的聚合等级进行指示。
  22. 根据权利要求16至21任一所述的方法,还包括:所述网络设备向所述终端设备发送配置信息,所述配置信息包括以下至少一项:
    为所述终端设备配置的搜索空间;
    为所述终端设备配置的CORESET;
    搜索空间与CORESET的对应关系;
    所述为所述终端设备配置的CORESET中的第一CORESET。
  23. 一种终端设备,包括:
    指示信息接收模块,用于接收指示信息,所述指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;所述第一搜索空间与第一CORESET关联,所述第一CORESET与所述至少2个不同的TCI状态关联;
    其中,所述第一时频资源由所述第一搜索空间和所述第一CORESET共同确定;
    第一确定模块,用于根据所述指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,所述第一搜索空间中检测的无重叠CCE的数目;其中,所述第一时间单元在所述第一时频资源范围内。
  24. 根据权利要求23所述的终端设备,其中,所述第一确定模块用于,确定所述第一搜索空间占用的无重叠CCE;其中,所述第一搜索空间占用的无重叠CCE的包括:所述第一搜索空间配置的所有候选PDCCH占用的CCE;根据所述指示信息,确定所述第一搜索空间占用的各个无重叠CCE中,每个无重叠CCE对应的TCI状态的个数;根据所述每个无重叠CCE对应的TCI状态的个数,确定所述第一搜索空间中检测的无重叠CCE的数目。
  25. 根据权利要求24所述的终端设备,其中,所述第一确定模块用于,确定所述第一搜索空间中所有候选PDCCH占用的CCE;根据所述所有候选PDCCH占用的CCE,确定所述第一搜索空间占用的无重叠CCE;其中,所述第一搜索空间占用的各个无重叠CCE对应不同的CCE索引。
  26. 根据权利要求23至25任一所述的终端设备,其中,所述第一确定模块用于,根据所述指示信息,如果对于第一搜索空间中的所有候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH,则确定所述第一搜索空间中检测的无重叠CCE的数目为所述第一搜索空间实际占用的无重叠CCE的数目的2倍。
  27. 根据权利要求23至26任一所述的终端设备,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
  28. 根据权利要求23至26任一所述的终端设备,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
  29. 根据权利要求30所述的终端设备,其中,所述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
  30. 根据权利要求23至29任一所述的终端设备,其中,所述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH。
  31. 根据权利要求30所述的终端设备,其中,所述部分候选PDCCH的指示方式包括以下至少一项:
    采用候选PDCCH的标识进行指示;
    采用候选PDCCH对应的聚合等级进行指示。
  32. 根据权利要求23至31任一所述的终端设备,还包括:
    配置信息接收模块,用于接收配置信息,所述配置信息包括以下至少一项:
    为所述终端设备配置的搜索空间;
    为所述终端设备配置的CORESET;
    搜索空间与CORESET的对应关系;
    所述为所述终端设备配置的CORESET中的第一CORESET。
  33. 根据权利要求32所述的终端设备,其中,所述第一确定模块,用于根据所述配置信息和所述指示信息,确定在第一时间单元上需要侦听的多个搜索空间中,所述第一搜索空间中检测的无重叠CCE的数目。
  34. 根据权利要求23至33任一所述的终端设备,还包括:
    第二确定模块,用于确定在第一时间单元上需要侦听的多个搜索空间中,各个搜索空间中需要检测的候选PDCCH的数目,以及除所述第一搜索空间以外的其他搜索空间中检测的无重叠CCE的数目;
    盲检测模块,用于根据所述在第一时间单元上需要侦听的多个搜索空间中,所述各个搜索空间中需要检测的候选PDCCH的数目、各个搜索空间中检测的无重叠CCE的数目以及所述终端设备的最大盲检测能力,确定可以进行盲检测的搜索空间;对所述可以进行盲检测的搜索空间进行盲检测。
  35. 根据权利要求34所述的终端设备,其中,所述最大盲检测能力包括最大候选PDCCH数和最大无重叠CCE数;
    所述盲检测模块,用于将所述在第一时间单元上需要侦听的多个搜索空间按照标识进行排序;在所述最大候选PDCCH数大于或等于前N-1个搜索空间中需要检测的候选PDCCH的数目之和、所述最大无重叠CCE数大于或等于前N-1个搜索空间中检测的无重叠CCE的数目之和,并且所述最大候选PDCCH数小于前N个搜索空间中需要检测的候选PDCCH的数目之和、或者所述最大无重叠CCE数小于前N个搜索空间中检测的无重叠CCE的数目之和时,确定所述可以进行盲检测的搜索空间包括所述前N-1个搜索空间;其中,所述N为2至M范围内的整数,所述M为所述在第一时间单元上需要侦听的搜索空间的个数。
  36. 根据权利要求35所述的终端设备,其中,所述盲检测模块对所有的搜索空间进行排序,或者对与具有一组相同标识的CORESET所关联的搜索空间进行排序。
  37. 根据权利要求23至36任一所述的终端设备,其中,所述第一时间单元包括时隙和/或时间跨度。
  38. 一种网络设备,包括:
    指示信息发送模块,用于发送指示信息,所述指示信息用于所述终端设备确定在第一时间单元上需要侦听的多个搜索空间中,各个第一搜索空间中检测的无重叠CCE的数目;其中,
    所述指示信息指示:网络设备在第一时频资源上通过至少2个不同的TCI状态传输第一搜索空间中的至少一个候选PDCCH;所述第一搜索空间与第一CORESET关联,所述第一CORESET与所述至少2个不同的TCI状态关联;
    其中,所述第一时频资源由所述第一搜索空间和所述第一CORESET共同确定。
  39. 根据权利要求38所述的网络设备,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的所有搜索空间。
  40. 根据权利要求38所述的网络设备,其中,在所述指示信息中,所述第一搜索空间包括仅与第一CORESET关联的部分搜索空间。
  41. 根据权利要求40所述的网络设备,其中,所述部分搜索空间包括支持至少2个不同的TCI状态同时传输的搜索空间。
  42. 根据权利要求38所述的网络设备,其中,所述指示信息指示:对于第一搜索空间中的部分候选PDCCH,网络设备分别在第一时频资源上通过2个不同的TCI状态传输所述候选PDCCH。
  43. 根据权利要求42所述的网络设备,其中,所述部分候选PDCCH的指示方式包括以下至少一项:
    采用候选PDCCH的标识进行指示;
    采用候选PDCCH对应的聚合等级进行指示。
  44. 根据权利要求38至43任一所述的网络设备,还包括:
    配置信息发送模块,用于向所述终端设备发送配置信息,所述配置信息包括以下至少一项:
    为所述终端设备配置的搜索空间;
    为所述终端设备配置的CORESET;
    搜索空间与CORESET的对应关系;
    所述为所述终端设备配置的CORESET中的第一CORESET。
  45. 一种终端设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至15中任一项所述的网络设备。
  46. 一种网络设备,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求16至22中任一项所述的方法。
  47. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至15中任一项所述的方法。
  48. 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求16至22中任一项所述的方法。
  49. 一种计算机可读存储介质,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至15中任一项所述的方法。
  50. 一种计算机可读存储介质,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求16至22中任一项所述的方法。
  51. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至15中任一项所述的方法。
  52. 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求16至22中任一项所述的方法。
  53. 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至15中任一项所述的方法。
  54. 一种计算机程序,所述计算机程序使得计算机执行如权利要求16至22中任一项所述的方法。
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