CN113271672B

CN113271672B - Method and device for determining DL SPS (space division multiple Access) resources

Info

Publication number: CN113271672B
Application number: CN202010093992.2A
Authority: CN
Inventors: 高飞; 焦淑蓉; 花梦; 彭金磷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2023-08-04
Anticipated expiration: 2040-02-14
Also published as: CN113271672A

Abstract

The application provides a method and a device for determining DL SPS resources. The method for determining the DL SPS resource comprises the following steps: receiving Downlink Control Information (DCI) sent by a base station, wherein the DCI is used for activating DL SPS transmission, and comprises rate matching indication information and time-frequency resource indication information; determining a first time-frequency resource according to the time-frequency resource indication information, wherein the first time-frequency resource is configured for terminal equipment and used for transmitting DL SPS data; determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission; and determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on the DLSPS period in which the rate matching indication information is available, wherein the second time-frequency resource is a time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource. The method and the device can reduce the error rate and improve the communication efficiency.

Description

Method and device for determining DL SPS (space division multiple Access) resources

Technical Field

The embodiment of the application relates to a communication technology, in particular to a method and a device for determining DL SPS resources.

Background

The new air interface (NR) introduces a resource during the R15 phase: rate matching resources (rate match resource, RMR). NR defines some time-frequency resources that declare unavailable for transmitting the uplink and downlink shared channels (physical downlink shared channel, PDSCH), and if these time-frequency resources intersect with PDSCH time-frequency resources that the base station configures to the User Equipment (UE) via downlink control information (downlink control information, DCI), then the time-frequency resources within the intersection are not used for transmitting the PDSCH. What is called declaring the time-frequency resources that cannot be used to transmit PDSCH means that the allocation of these time-frequency resources to the belonging aggregation function is not used for PDSCH transmission, in practice whether these time-frequency resources can be used for PDSCH transmission also requires reference to other relevant configuration information, such as the rate matching resource group ratevanescentpattern group1 and/or the rate matching resource group ratevanescentpattern group1, and the rate matching indication information (rate matching indicator) in DCI format 1_1.

RMR mainly includes 3 classes: RMR at Resource Block (RB) -symbol (symbol) level, RMR at Resource Element (RE) level, and synchronization signal and physical broadcast channel (physical broadcast channel, PBCH) block (synchronization signal and PBCH block, SSB) resources. The RMR of RB symbol level may be represented by a bitmap of RB level (bitmap) and bitmap of symbol level, and a bitmap for configuring RMR period, or may be represented by a CORESET manner, and a rate matching pattern (ratevachpattern) is obtained based on the RMR distributed in the entire bandwidth of a cell, each bandwidth part (BWP) of one UE may be configured with ratevachpattern of up to 4 BWP levels, and each bandwidth of one serving cell may be configured with ratevachpattern of up to 4 cell levels. It can be seen that the concept of a rate matching pattern group (RateMatchPattern group) may be defined in at most 8 configurations RateMatchPattern, NR for one UE, and any one of the aforementioned at most 8 ratematchpatterns may or may not belong to a certain RateMatchPattern group. The base station dynamically configures whether RMR corresponding to RateMatchPattern in RateMatchPattern group can be used to transmit PDSCH through a value in a rate matching indication field (rate matching indicator field) in DCI. For example, two rate matching pattern groups RateMatchPattern group1 and RateMatchPattern group2, the rate matching indication field (rate matching indicator field) in the DCI includes 2 bits (bits), rateMatchPattern group1 corresponds to a first bit, rateMatchPattern group1 corresponds to a second bit, and if the first bit is 1, the RMR corresponding to each RateMatchPattern in RateMatchPattern group1 cannot be used to transmit the PDSCH, and if the second bit is 1, the RMR corresponding to each RateMatchPattern in RateMatchPattern group2 cannot be used to transmit the PDSCH. And the RMR corresponding to RateMatchPattern not included in any RateMatchPattern group determines that it cannot be used to transmit PDSCH.

NR also introduces a technique in the R15 phase: semi-persistent scheduling (semi persistent scheduling, SPS). The SPS transmission has the characteristics of one-time distribution and multiple use, and the base station does not need to send DCI to the UE at each transmission interval, so that the cost of the corresponding downlink control channel (physical downlink control channel, PDCCH) is greatly reduced. The base station configures Downlink (DL) SPS transmission of the UE through higher layer signaling (e.g., RRC signaling), but the base station cannot use the DL SPS transmission after configuring the DL SPS transmission for the UE, and needs to perform activation of the DL SPS transmission through PDCCH configured with scheduled radio network temporary identifier (configured scheduling-radio network temporary identity, CS-RNTI) and masked cyclic redundancy check (cyclic redundancy check, CRC). The CS-RNTI is a unique UE ID for DL SPS scheduling. The PDCCH activating DL SPS transmissions carries some important information about the downlink data transmissions, e.g., parameters such as time-frequency resource allocation. Once the PDCCH activates DL SPS transmissions, the UE periodically receives downlink data on the time-frequency resources indicated by the PDCCH activating DL SPS transmissions according to the configuration of RRC signaling. The DCI formats carried by the PDCCH that activates DL SPS transmissions may include DCI format 1_0 and DCI format 1_1.

Currently, no solution is provided in R15 for rate matching of DL SPS by the base station and the UE when DL SPS transmission is encountered, for RMR of RB symbol level corresponding to one or more RateMatchPattern groups contained in RateMatchPattern group indicated by the rate matching indication field in DCI format 1_1.

Disclosure of Invention

The embodiment of the application provides a method and a device for determining DL SPS resources, so that error rate is reduced, and communication efficiency is improved.

In a first aspect, an embodiment of the present application provides a method for determining DL SPS resources, including:

receiving Downlink Control Information (DCI) sent by a base station, wherein the DCI is used for activating DL SPS transmission, and comprises rate matching indication information and time-frequency resource indication information; determining a first time-frequency resource according to the time-frequency resource indication information, wherein the first time-frequency resource is configured for terminal equipment and used for transmitting DL SPS data; determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission; and determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on the DL SPS period in which the rate matching indication information is available, wherein the second time-frequency resource is the time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource.

The invention provides a method for determining DL SPS resources, which provides an explicit processing method for judging whether terminal equipment can reject RMR from time-frequency resources configured by access network equipment and used for transmitting DL SPS data when the RMR indicated by rate matching indication information in DCI encounters DL SPS transmission, and particularly in the DL SPS transmission, in addition to the period of the first DL SPS data transmission, the period of other activated DL SPS transmission is also explicitly defined, so that the fact that the cognition of the access network equipment and the terminal equipment on the time-frequency resources for transmitting the DL SPS data is consistent under the condition is ensured, the error rate is reduced, and the communication efficiency is improved.

In a possible implementation manner, the determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource includes: determining a third time-frequency resource which is not available for transmitting DL SPS data according to the rate matching indication information; judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources or not; and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as the second time-frequency resources.

In the method, on the DL SPS period with available rate matching indication information, RMR resources which are not used for transmitting DL SPS data are removed from time-frequency resources configured for the terminal equipment by the access network equipment, so that correct decoding of the terminal equipment is ensured.

In one possible implementation, the DL SPS period available for the rate matching indication information is a first period, where the first time slot of the first transmission of DL SPS data indicated by K0 in the DCI is located.

In one possible implementation manner, the DL SPS period available for the rate matching indication information is a second period, where the second period is a period where a second time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time frequency resource is located.

In one possible implementation manner, the DL SPS period in which the rate matching indication information is available is a third period, where N slots are used for repeatedly transmitting the same DL SPS data in the third period, where the N slots are consecutive N slots from a first slot, where the first slot is a slot for transmitting the DL SPS data for the first time indicated by K0 in the DCI, or where the N slots are consecutive N slots from a second slot, where the second slot is a slot corresponding to a time-frequency resource for actually transmitting the DL SPS data for the first time in the first time-frequency resource.

In one possible implementation, the DL SPS periods for which the rate matching indication information is available include all periods of an active DL SPS transmission.

In one possible implementation manner, the DL SPS period in which the rate matching indication information is available includes K consecutive periods, where the K periods start from a period in which a first time slot is a time slot in which DL SPS data is transmitted for the first time indicated by K0 in the DCI, or the K periods start from a period in which a second time slot is a time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time-frequency resource.

The application provides the scheme of the available DL SPS period of the various rate matching indication information, provides various available DL SPS period possibilities in all periods of the activated DL SPS transmission, and improves the flexibility of the scheme.

In a possible implementation manner, the determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource further includes: and determining the first time-frequency resource as the second time-frequency resource on the DL SPS period in which the rate matching indication information is not available.

In one possible implementation, the method further includes: and determining the first time-frequency resource as the second time-frequency resource when the rate matching indication information is not available on all periods of the activated DL SPS transmission.

In one possible implementation, DL SPS data is received on the second time-frequency resource.

In one possible implementation manner, the execution subject of the DL SPS resource determining method provided in the present application may be a terminal device or a chip in the terminal device.

In a second aspect, an embodiment of the present application provides a determining apparatus for DL SPS resources, including:

a receiving module, configured to receive downlink control information DCI sent by a base station, where the DCI is used to activate DL SPS transmission, and the DCI includes rate matching indication information and time-frequency resource indication information; the processing module is used for determining a first time-frequency resource according to the time-frequency resource indication information, wherein the first time-frequency resource is configured for the terminal equipment and used for transmitting DL SPS data; determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission; and determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on the DL SPS period in which the rate matching indication information is available, wherein the second time-frequency resource is the time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource.

In a possible implementation manner, the processing module is specifically configured to determine, according to the rate matching indication information, a third time-frequency resource that is not available for transmitting DL SPS data; judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources or not; and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as the second time-frequency resources.

In one possible implementation, the processing module is further configured to determine the first time-frequency resource as the second time-frequency resource on a DL SPS period in which the rate matching indication information is not available.

In one possible implementation, the processing module is further configured to determine the first time-frequency resource as the second time-frequency resource when the rate matching indication information is not available on all periods of the activated DL SPS transmission.

In a third aspect, the present application provides a terminal device, including: one or more processors; a memory for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the terminal device to implement the method of any of the first aspects described above.

In a fourth aspect, the present application provides a computer readable storage medium comprising a computer program which, when executed on a computer, causes the computer to perform the method of any one of the first aspects above.

In a fifth aspect, the present application provides a computer program which, when executed by a computer, causes the computer to perform the method of any one of the first aspects above.

Drawings

FIG. 1 illustrates an exemplary schematic diagram of a rate matching pattern;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an access network device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

FIG. 5 is a flowchart of an embodiment of a method for determining DL SPS resources of the present application;

FIGS. 6-13 respectively illustrate one exemplary schematic diagram of DL SPS periods for which a rate matching indication field is available;

fig. 14 is a schematic structural diagram of an embodiment of a determining apparatus for DL SPS resources in the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the embodiments of the present application, are within the scope of the embodiments of the present application.

The terms "first," "second," and the like in the description and in the claims and drawings of embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a series of steps or elements. The method, system, article, or apparatus is not necessarily limited to those explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The related art to which the present application relates is explained below.

1. PDCCH blind detection

According to different purposes and contents, the downlink control information (downlink control information, DCI) is divided into a plurality of formats, and downlink control channels (physical downlink control channel, PDCCH) sent to different terminal devices are differentiated by cell-level radio network temporary identities (cell-radio network temporary identity, C-RNTI) corresponding to the terminal devices, that is, cyclic redundancy check (cyclic redundancy check, CRC) of DCI sent to the terminal devices is masked by the C-RNTI of the terminal devices. The network device configures the terminal device with an alternative PDCCH set requiring listening to DCI through higher layer signaling (e.g., radio resource control (radio resources control, RRC) signaling). Since the terminal device does not know in advance on which alternative or alternatives PDCCH (PDCCH candidate) the network device will receive DCI, but the terminal device knows what DCI it is currently expecting to receive based on the configuration information of the network device, the terminal device may attempt decoding of PDCCH candidates in the set of alternative PDCCHs based on the configuration information. The terminal equipment adopts the C-RNTI of the terminal equipment to carry out CRC check on the information on the PDCCH transmitting ate, and if the CRC check is successful, the terminal equipment successfully decodes the DCI. The alternative PDCCH set is a search space set, and the action of the terminal device attempting to decode on PDCCH candidate to determine whether DCI is received is called PDCCH Blind Detection (BD).

2. RB symbol level resource that cannot be used to transmit PDSCH

The new air interface (NR) introduces rate matching resources (rate match resource, RMR) in the R15 phase. NR defines some time-frequency resources that declare not available for transmitting uplink and downlink shared channels (physical downlink shared channel, PDSCH), and if these time-frequency resources overlap with PDSCH time-frequency resources that are configured by the base station to a User Equipment (UE) through DCI, the overlapping time-frequency resources are not used for transmitting DL SPS data. What is called declaring the time-frequency resources that cannot be used to transmit PDSCH means that the allocation of these time-frequency resources to the belonging aggregation function is not used for PDSCH transmission, in practice whether these time-frequency resources can be used for PDSCH transmission also requires reference to other relevant configuration information, such as the rate matching resource group ratevanescentpattern group1 and/or the rate matching resource group ratevanescentpattern group1, and the rate matching indication information (rate matching indicator) in DCI format 1_1.

RMR mainly includes 3 classes: RMR at Resource Block (RB) -symbol (symbol) level, RMR at Resource Element (RE) level, and SSB resources.

RMR at RB symbol level may be represented by bitmaps (resourceBlocks) at RB level and bitmap (symbolsInResourceBlock) at symbol level, and/or bitmap (periodicityAndPattern) for configuring RMR period. Fig. 1 shows an exemplary schematic diagram of a rate matching pattern (RateMatchPattern), and as shown in fig. 1, the horizontal axis represents time domain in symbol, bitmap at symbol level, and the vertical axis represents frequency domain in RB, bitmap at RB level. When the bit values of the horizontal axis and the vertical axis are 1, the corresponding time-frequency resource is RMR (black square in FIG. 1); when one or more of the bit values of the horizontal axis and the vertical axis are 0, it indicates that the corresponding time-frequency resource is not RMR (white square in fig. 1). On the basis, the horizontal axis is coarse-grained and takes 2 time slots as a unit, the bitmap of the pattern level corresponds to the bitmap, and if the bit value of the pattern level is 0, the bitmap indicates that all corresponding time-frequency resources are not RMR. The resource set consisting of multiple RMR resources forms a RateMatchPattern, i.e. a pattern consisting of all black squares in fig. 1. Note that, in fig. 1, the coverage time-domain unit of the symbol-level bitmap is 2 slots (symbol-level bitmap corresponding to 28 bits), and the coverage time-domain unit may be 1 slot (symbol-level bitmap corresponding to 14 bits), which is not particularly limited in this application.

Alternatively, the RB symbol level RMR may be configured by means of a control resource set (CORESET).

Each bandwidth part (BWP) of one UE in R15 may be configured with at most 4 BWP-level ratematchpatterns, respectively, and at most 4 cell-level ratematchpatterns may be configured with respect to the entire bandwidth of one serving cell. It can be seen that the concept of a rate matching pattern group (RateMatchPattern group) may be defined in at most 8 configurations RateMatchPattern, NR for one UE, and any one of the aforementioned at most 8 ratematchpatterns may or may not belong to a certain RateMatchPattern group. The base station dynamically configures whether the RMR corresponding to the RateMatchPattern in the RateMatchPattern group is a resource that cannot be used for transmitting the PDSCH through a value in a rate matching indication field (rate matching indicator field) in the DCI. For example, two rate matching pattern groups RateMatchPattern group1 and RateMatchPattern group2, the rate matching indication field (rate matching indicator field) in the DCI includes 2 bits (bits), rateMatchPattern group1 corresponds to a first bit, rateMatchPattern group1 corresponds to a second bit, if the first bit is 1, then each RateMatchPattern in RateMatchPattern group1 corresponds to an RMR that cannot be used for transmitting PDSCH, and if the second bit is 1, then each RateMatchPattern in RateMatchPattern group2 corresponds to an RMR that cannot be used for transmitting PDSCH. And the RMR corresponding to the RateMatchPattern not included in any RateMatchPattern group is determined as a resource that cannot be used to transmit the PDSCH.

3. DL SPS

NR also introduces semi-persistent scheduling (semi persistent scheduling, SPS) technique in the R15 phase. The SPS transmission has the characteristics of one-time distribution and multiple-time use, and the base station does not need to send DCI to the UE at each transmission interval, so that the cost of the corresponding PDCCH is greatly reduced. The base station configures Downlink (DL) SPS transmission of the UE through higher layer signaling (e.g., RRC signaling SPS-Config), including a period of DL SPS, a number of hybrid automatic repeat request (hybrid automatic repeat reQuest, HARQ) processes for DL SPS, a modulation coding scheme for DL SPS by the UE, and uplink control channel (physical uplink control channel, PUCCH) resources for HARQ feedback for DL SPS.

However, the base station cannot use the DL SPS transmissions after configuring the DL SPS transmissions to the UE, and needs to mask the activation of the DL SPS data by DCI configuring a scheduled radio network temporary identifier (configured scheduling-radio network temporary identity, CS-RNTI) and a cyclic redundancy check (cyclic redundancy check, CRC). The CS-RNTI is a unique UE ID for DL SPS scheduling. The DCI activating DL SPS transmission carries some important information about downlink data transmission, for example, parameters such as time-frequency resource allocation. Once the DCI activates DL SPS transmissions, the UE periodically receives downlink data on the time-frequency resources indicated by the DCI activating DL SPS transmissions according to the configuration of RRC signaling. The format of DCI activating DL SPS transmission may include DCI format 0_0,DCI format0_1,DCI format 1_0 and DCI format 1_1. DCI activating DL SPS transmissions has some features: (1) The CRC of the DCI is masked by CS-RNTI, and the value of the CS-RNTI is configured by a high-layer signaling (CS-RNTI); (2) A new data indication (new data indication, NDI) field within the DCI is set to "0"; (3) The two fields of HARQ process number (HARQ process number) and redundancy version (redundancy version) in the DCI are set to special values. Table 1 shows an example of DCI activating DL SPS transmission.

TABLE 1

If the DL SPS transmission is to be terminated, the base station may deactivate the DL SPS transmission. The format of DCI deactivating DL SPS transmission may include DCI format 0_0 and DCI format 1_0. One UE may make HARQ feedback on DCI deactivating DL SPS transmissions telling the base station itself whether deactivated information has been received. The UE may perform HARQ feedback several symbols after receiving the last symbol of the DCI deactivating the DL SPS transmission. DCI deactivating DL SPS transmissions has some features: (1) The CRC of the DCI is masked by CS-RNTI, and the value of the CS-RNTI is configured by a high-layer signaling (CS-RNTI); (2) the NDI field within the DCI is set to "0"; (3) The 4 fields of HARQ process number (HARQ process number), redundancy version (redundancy version), modulation coding method (modulation and coding scheme) and frequency domain resource allocation (frequency domain resource assignment) in the DCI are set to special values. Table 2 shows an example of DCI deactivating DL SPS transmissions.

TABLE 2

If the base station configures repeated transmission for the UE through the high-level parameter pdsch-aggregation factor, when the UE receives DCI of DCI format 1_1, which is masked by the CS-RNTI and activates DL SPS transmission, DL SPS data is received on the same time-frequency resource in N consecutive slots, where the N value is equal to the value configured by the pdsch-aggregation factor. The same time-frequency resources are determined from a time-domain resource allocation indication field (time domain resource assignment) and a frequency-domain resource allocation indication field (frequency domain resource assignment) in DCI activating a DL SPS transmission.

Currently, no solution is given in R15 for the RMR of RB symbol level corresponding to one or more ratematchpatterns contained in RateMatchPattern group indicated by the rate matching indication field in DCI format 1_1, how the base station and UE rate match DL SPS when DL SPS transmission is encountered.

The application provides a method for determining DL SPS resources, and a communication system suitable for the method can comprise core network equipment, access network equipment and at least one terminal equipment, wherein wireless connection can be established between the core network equipment and the access network equipment, between the access network equipment and each terminal equipment, and wireless connection can also be established between the terminal equipment. Fig. 2 is a schematic diagram of a communication system provided in the embodiment of the present application, as shown in fig. 2, where a core network device is a core network device 11, an access network device is an access network device 21, and at least one terminal device is a terminal device 31, a terminal device 32, a terminal device 33, and a terminal device 34, where a wireless connection may be established between the core network device 11 and the access network device 21, and a wireless connection may be established between the access network device 21 and the terminal devices 31-34. It should be noted that, the core network device, the access network device, and the terminal device included in the communication system shown in fig. 2 are only examples, and the connection manner between the devices is also only an example, and in the embodiment of the present application, the type and the number of network elements included in the communication system, and the connection relationship between the network elements are not limited thereto.

The communication system may be a communication system supporting a fourth generation (fourth generation, 4G) access technology, such as a long term evolution (long term evolution, LTE) access technology; alternatively, the communication system may be a communication system supporting a fifth generation (5G) access technology, such as a New Radio (NR) access technology; alternatively, the communication system may be a communication system supporting a third generation (3G) access technology, such as a (universal mobile telecommunications system, UMTS) access technology; alternatively, the communication system may also be a communication system supporting a plurality of radio technologies, such as a communication system supporting LTE technology and NR technology. In addition, the communication system may also be adapted for future-oriented communication technologies.

The access network device in the embodiment of the present application may be a device on an access network side for supporting access of a terminal device to a communication system, and the access network device may be called a Base Station (BS), for example, a base transceiver station (base transceiver station, BTS) and a base station controller (base station controller, BSC) in a 2G access technology communication system, a node B (node B) and a radio network controller (radio network controller, RNC) in a 3G access technology communication system, an evolved node B (eNB) in a 4G access technology communication system, a next generation base station (next generation nodeB, gNB) in a 5G access technology communication system, a transmission receiving point (transmission reception point, TRP), a relay node (relay node), an access point (access point, AP), and the like.

A terminal device (terminal device) in an embodiment of the present application may be a device that provides voice or data connectivity to a user. The terminal device may be referred to as a User Equipment (UE), a mobile station (ms), a subscriber unit (subscriber unit), a station, a terminal device (terminal equipment, TE), or a terminal, etc. The terminal device may be a cellular phone (cellular phone), a car wireless communication device, a personal digital assistant (personal digital assistant, PDA), a wireless modem (modem), a hand-held device (handheld), a laptop computer (lap computer), a cordless phone (cordis phone), a wireless local loop (wireless local loop, WLL) station, a tablet computer (pad), etc. With the development of wireless communication technology, devices that can access to a wireless communication network, communicate with a wireless network side, or communicate with other objects through the wireless network may be terminal devices in the embodiments of the present application, such as terminal devices and automobiles in intelligent transportation, home devices in intelligent homes, meter reading devices in smart grids, voltage monitoring devices, environment monitoring devices, video monitoring devices in intelligent security networks, cash registers, and the like. The terminal device may be stationary or mobile.

Fig. 3 is a schematic structural diagram of an access network device according to an embodiment of the present application, and the structure of the access network device may refer to fig. 3.

The access network device comprises at least one processor 311, at least one memory 312, at least one transceiver 313, at least one network interface 314, and one or more antennas 315. The processor 311, the memory 312, the transceiver 313, and the network interface 314 are connected, for example, by a bus, and in the embodiment of the present application, the connection may include various interfaces, transmission lines, buses, or the like, which is not limited in this embodiment. The antenna 315 is connected to the transceiver 313. The network interface 314 is for enabling the access network device to connect with other communication devices via a communication link, e.g. the network interface 314 may comprise a network interface between the access network device and a core network element, e.g. an S1 interface, and the network interface 314 may comprise a network interface between the access network device and other network devices (e.g. other access network devices or core network elements), e.g. an X2 or Xn interface.

The processor 311 is mainly configured to process the communication protocol and the communication data, and control the entire access network device, execute a software program, and process the data of the software program, for example, to support the access network device to perform the actions described in the embodiments. The access network device may include a baseband processor, which is mainly used for processing the communication protocol and the communication data, and a central processor, which is mainly used for controlling the entire access network device, executing a software program, and processing the data of the software program. The processor 311 in fig. 3 may integrate the functions of a baseband processor and a central processor, and those skilled in the art will appreciate that the baseband processor and the central processor may also be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that the access network device may include multiple baseband processors to accommodate different network formats, and that the access network device may include multiple central processors to enhance its processing capabilities, and that the various components of the access network device may be connected by various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in a memory in the form of a software program, which is executed by the processor to realize the baseband processing function.

The memory is mainly used for storing software programs and data. The memory 312 may be a stand alone memory coupled to the processor 311. Alternatively, the memory 312 may be integrated with the processor 311, for example within a single chip. The memory 312 is capable of storing program codes for executing the technical solutions of the embodiments of the present application, and is controlled to execute by the processor 311, and various types of executed computer program codes can also be regarded as drivers of the processor 311.

Fig. 3 shows only one memory and one processor. In an actual access network device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be a memory element on the same chip as the processor, i.e., an on-chip memory element, or a separate memory element, as embodiments of the present application are not limited in this regard.

Transceiver 313 may be used to support reception or transmission of radio frequency signals between an access network device and a terminal device, and transceiver 313 may be connected to antenna 315. The transceiver 313 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 315 may receive radio frequency signals, and the receiver Rx of the transceiver 313 is configured to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 311, so that the processor 311 performs further processing, such as demodulation processing and decoding processing, on the digital baseband signals or digital intermediate frequency signals. The transmitter Tx in the transceiver 313 is also configured to receive a modulated digital baseband signal or digital intermediate frequency signal from the processor 311, convert the modulated digital baseband signal or digital intermediate frequency signal to a radio frequency signal, and transmit the radio frequency signal via the one or more antennas 315. In particular, the receiver Rx may selectively perform one or more steps of down-mixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal, where the order of the down-mixing and analog-to-digital conversion is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or the digital intermediate frequency signal to obtain a radio frequency signal, and the sequence of the up-mixing processing and the digital-to-analog conversion processing may be adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

The transceiver 313 may also be referred to as a transceiver unit, transceiver device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, where the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The structure of the terminal device may be referred to fig. 4.

The terminal device comprises at least one processor 411, at least one transceiver 412 and at least one memory 413. The processor 411, the memory 413 and the transceiver 412 are connected. Optionally, the terminal device may further comprise output means 414, input means 415 and one or more antennas 416. An antenna 416 is coupled to the transceiver 412, and an output device 414 and an input device 415 are coupled to the processor 411.

Transceiver 412, memory 413, and antenna 416 may perform similar functions with reference to the associated description in fig. 3.

The processor 411 may be a baseband processor or a CPU, and the baseband processor and the CPU may be integrated together or separated.

The processor 411 may be used to implement various functions for the terminal device, for example, to process a communication protocol and communication data, or to control the entire terminal device, execute a software program, and process data of the software program; or to assist in completing computational processing tasks such as processing graphics images or audio, etc.; or the processor 411 may be configured to implement one or more of the functions described above.

The output device 414 communicates with the processor 411 and may display information in a variety of ways. For example, the output device 414 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display apparatus, a Cathode Ray Tube (CRT) display apparatus, a projector, or the like. The input device 415 is in communication with the processor 411 and may accept user input in a variety of ways. For example, the input device 415 may be a mouse, keyboard, touch screen, sensor, or the like.

Fig. 5 is a flowchart of an embodiment of a method for determining DL SPS resources in the present application, and as shown in fig. 5, an execution body of the method for determining DL SPS resources in the present embodiment may be a terminal device or a chip in the terminal device in the above embodiment. The following description takes the terminal device as an example, and a chip in the terminal device may replace the action of the terminal device. The method for determining DL SPS resources may include:

Step 501, receiving DCI sent by an access network device.

The terminal equipment can receive DCI sent to the terminal equipment by the access network equipment through a PDCCH blind detection technology. The DCI may be DCI in the format DCI format 1_1 of the access network device masked with CRC through CS-RNTI, which acts to activate DL SPS transmissions. As described in the related art above, the DCI includes a rate matching indication field (rate matching indicator field), a time domain resource allocation indication field (time domain resource assignment), and a frequency domain resource allocation indication field (frequency domain resource assignment). The access network equipment indicates the time-frequency resources for transmitting the DL SPS data configured for the terminal equipment through the values of the time-domain resource allocation indication domain and the frequency-domain resource allocation indication domain. The access network device indicates whether the RMR corresponding to the RateMatchPattern in the RateMatchPattern group can be used to transmit the PDSCH by setting a value of the rate matching indication field. For example, there are two rate matching pattern groups RateMatchPattern group1 and RateMatchPattern group2, the rate matching indication field in the DCI includes 2 bits (bits), rateMatchPattern group1 corresponds to the first bit, rateMatchPattern group1 corresponds to the second bit, if the first bit is 1, then the RMR corresponding to RateMatchPattern in RateMatchPattern group1 cannot be used to transmit DL SPS data, and if the second bit is 1, then the RMR corresponding to RateMatchPattern in RateMatchPattern group2 cannot be used to transmit DL SPS data. For example, the value of the rate matching indication field is 10, which indicates that the RMR corresponding to each RateMatchPattern in RateMatchPattern group1 cannot be used to transmit DL SPS data, and the RMR corresponding to each RateMatchPattern in RateMatchPattern group2 can be used to transmit DL SPS data. The value of the rate matching indication field is 01, which indicates that the RMR corresponding to each RateMatchPattern in RateMatchPattern group1 can be used to transmit DL SPS data, and the RMR corresponding to each RateMatchPattern in RateMatchPattern group2 cannot be used to transmit DL SPS data.

Step 502, determining a first time-frequency resource according to the time-frequency resource indication information.

The DCI used for activating the DL SPS transmission carries information of the DL SPS data configured by the access network equipment for the terminal equipment, and the first time-frequency resource is the time-frequency resource of the DL SPS data configured for the terminal equipment carried in the DCI.

Step 503, determining whether a rate matching indication field is available for at least one period of an active DL SPS transmission.

Based on the transmission characteristics of DL SPS data, in an activated DL SPS period, the terminal device may receive DL SPS data on a time-frequency resource (first time-frequency resource) configured for the access network device to transmit DL SPS data, where the first time-frequency resource includes two dimensions of a time domain and a frequency domain, and the frequency domain represents a frequency band occupied by the first time-frequency resource, which may be any one or more frequency bands in a whole bandwidth of a cell, or any one or more frequency bands in BWP of the terminal device, which is not limited specifically; the time domain indicates a time slot occupied by a first time-frequency resource, for example, one DL SPS period includes 10 time slots (slots 0-9), and the first time-frequency resource occupies slot 3 or slot 3-5 therein, so that in each activated DL SPS period, the terminal device receives DL SPS data in the time slot (slot 3 or slot 3-5) corresponding to the first time-frequency resource. The slots may refer to slots in the NR system or slots in the LTE system, and the present application does not specifically limit slots.

By means of higher layer signalling the terminal device can determine whether the rate matching indication field is available for at least one period of the active DL SPS transmission, i.e. over all periods of the active DL SPS transmission, the terminal device can determine on which DL SPS period or periods the rate matching indication field is valid according to the indication of the higher layer signalling, valid, i.e. that the RMR indicated by the rate matching indication field will have an effect on said transmission of DL SPS data. The result of the impact is that the indicated RMR may or may not be used for the transmission of the DL SPS data.

In one possible implementation, higher layer signaling (e.g., RRC signaling) refers to a method of representing any of the embodiments shown in fig. 6-13 below by corresponding signaling, e.g., signaling "scheme1" represents a method of the embodiment shown in fig. 6, signaling "scheme2" represents a method of the embodiment shown in fig. 7, etc. The access network device semi-statically determines which method to use in particular by the configuration rateMatchingScheme of the higher layer signaling. For example, the signaling structure of the rateMatchingScheme may be as follows:

step 504, determining a second time-frequency resource according to the rate matching indication domain and the first time-frequency resource on the DL SPS period where the rate matching indication domain is available.

The DL SPS periods for which the rate matching indication field is available are one or more periods for which the terminal device determines in step 503 that the rate matching indication field is valid, and the indicated RMR may affect the transmission of DL SPS data in the DL SPS period, where the one or more periods belong to all periods of the active DL SPS transmission. The terminal device may thus exclude the effect of the RMR indicated by the rate matching indication field on the transmission of DL SPS data by determining the second time-frequency resource over the DL SPS period available to the rate matching indication field.

The second time-frequency resource is a time-frequency resource available for transmitting DL SPS data in the first time-frequency resource. The second time-frequency resource is different from the first time-frequency resource in that the second time-frequency resource is a time-frequency resource which is determined by the terminal equipment after resource judgment and processing and can be used for transmitting DL SPS data, and the DL SPS data which is transmitted to the terminal equipment by the access network equipment is loaded on the second time-frequency resource; while the first time-frequency resource is a time-frequency resource that the access network device configures to the terminal device for transmitting DL SPS data, although the access network device is configured, the resource is not necessarily actually used, e.g., the access network device has no data to send to the terminal device on a certain DL SPS period, and the time-frequency resource configured on the DL SPS period is useless. The terminal device obtains a first time-frequency resource configured by the access network device for transmitting DL SPS data according to the indication of DCI for activating DL SPS transmission, but if the first time-frequency resource includes RMR which cannot be used for transmitting DL SPS data (the RMR may be used for rate matching), the terminal device may remove the portion of RMR from the first time-frequency resource, and then receive and decode signals on the remaining time-frequency resource (i.e., the second time-frequency resource) to obtain DL SPS data sent by the access network device. So that the decoding object of the terminal device (the received signal from the second time-frequency resource) can be kept consistent with the encoding object of the access network device (the transmitted signal to the second time-frequency resource). Otherwise, if the terminal device decodes the received signal from the first time-frequency resource, and the access network device only encodes the transmitted signal sent to the second time-frequency resource based on the principle that some RMRs cannot be used to transmit DL SPS data, the encoding objects and the decoding objects on two sides are inconsistent, so that the decoding errors of the terminal device are caused, and the transmission efficiency is further affected.

The terminal device can therefore specify the second time-frequency resource based on the rate matching indication field. On a DL SPS period available by a rate matching indication domain, the terminal equipment determines a rate matching pattern group which cannot be used for transmitting DL SPS data according to the value of the rate matching indication domain, and acquires one or more rate matching patterns contained in the rate matching pattern group which cannot be used for transmitting the DL SPS data; judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, wherein the third time-frequency resource is the time-frequency resource corresponding to one or more rate matching patterns contained in a rate matching pattern group which cannot be used for transmitting DL SPS data; and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as second time-frequency resources.

The DL SPS period available to the rate matching indication field may include several settings: assuming that one DL SPS period includes 10 slots (slots 0-9), all periods of the active DL SPS transmissions include 4 DL SPS periods (periods 0-3). The terminal device receives DCI for activating DL SPS transmission sent by the access network device at slot 0 of period 0, wherein the first time slot of the first transmission DL SPS data indicated by K0 in the DCI is slot 3 of period 0.

(1) The DL SPS period available to the rate matching indication field is a first period, which is a period in which a first time slot of the first transmission of DL SPS data indicated by a parameter K0 in DCI is located.

Fig. 6 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 6, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmissions, where the first slot of the first transmission of DL SPS data indicated by K0 in the DCI is slot 3 of period 0. Therefore, the period of DL SPS available by the rate matching indication field is the period (period 0) where the first slot (slot 3) is located, that is, in period 0, the terminal device may determine whether RMR corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is overlapped with the first time-frequency resource, it is necessary to discard the time-frequency resource overlapped with the third time-frequency resource from the first time-frequency resource, take the remaining time-frequency resource as the second time-frequency resource, and if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is not overlapped with the first time-frequency resource, directly take the first time-frequency resource as the second time-frequency resource.

(2) The DL SPS period available by the rate matching indication domain is a second period, where the second period is a period where a second time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time is located.

Fig. 7 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 7, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmissions, where the first slot of the first transmission of DL SPS data indicated by K0 in the DCI is slot 3 of period 0. However, due to other factors, slot 3 of period 0 (may also be slot 3 of period 0-1) cannot transmit DL SPS data, where the DL SPS period available by the rate matching indication field is the period in which the second time slot (slot 3 of period 1) corresponding to the time-frequency resource actually transmitting DL SPS data for the first time is located, i.e. period 1. Therefore, in period 1, the terminal device may determine whether RMR corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is overlapped with the first time-frequency resource, the time-frequency resource overlapped with the third time-frequency resource needs to be removed from the first time-frequency resource, the remaining time-frequency resource is used as the second time-frequency resource, and if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is not overlapped with the first time-frequency resource, the first time-frequency resource is directly used as the second time-frequency resource.

(3) The DL SPS period available for the rate matching indication field is a third period, where N slots are used for repeatedly transmitting the same DL SPS data, N slots are consecutive N slots from a first slot, and the first slot is a slot for transmitting DL SPS data for the first time indicated by K0 in the DCI.

If the access network device configures repeated transmission for the terminal device through the high-layer parameter pdsch-aggregation factor, when the terminal device receives the DCI of DCI format 1_1 which is masked by the CS-RNTI and activates the transmission of the DL SPS, the terminal device receives the DL SPS data on the same OFDM symbols in the continuous N slots from the first slot, wherein the value of N is equal to the value configured by the pdsch-aggregation factor.

Fig. 8 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 8, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmissions, where the first slot of the first transmission of DL SPS data indicated by K0 in the DCI is slot 3 of period 0. The pdsch-aggregation factor is configured to have a value of 4, and the terminal device will repeatedly receive the same DL SPS data on slot 3-6 of period 0. Therefore, the DL SPS period available by the rate matching indication field is period 0, i.e., on period 0, the terminal device may determine whether RMR corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, if the RMR (third time-frequency resource) that cannot be used to transmit DL SPS data is overlapped with the first time-frequency resource, it is necessary to discard the time-frequency resource overlapped with the third time-frequency resource from the first time-frequency resource, take the remaining time-frequency resource as the second time-frequency resource, and if the RMR (third time-frequency resource) that cannot be used to transmit DL SPS data is not overlapped with the first time-frequency resource, it is directly taken as the second time-frequency resource.

(4) The available DL SPS period of the rate matching indication field is a fourth period, and N time slots are used for repeatedly transmitting the same DL SPS data in the fourth period, where N time slots are consecutive N time slots from a second time slot, and the second time slot is a time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time-frequency resource.

If the access network device configures repeated transmission for the terminal device through the high-layer parameter pdsch-aggregation factor, when the terminal device receives the DCI of DCI format 1_1 which is masked by the CS-RNTI and activates the transmission of the DL SPS, the terminal device receives the DL SPS data on the same OFDM symbols in the continuous N slots from the second time slot, wherein the value of N is equal to the value configured by the pdsch-aggregation factor.

Fig. 9 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 9, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmission, where a first slot of DL SPS data for a first transmission indicated by K0 in the DCI is slot 3 of period 0. The pdsch-Aggregation factor configuration has a value of 4. But due to other factors, slots 3-6 of period 0 (which may also be slots 3-6 of period 0-1) cannot transmit DL SPS data, where the rate matching indicates that the DL SPS period available for the domain is the period in which 4 consecutive slots from the second time slot (slot 3 of period 1) are located, i.e., period 1, corresponding to the time-frequency resource that actually transmits DL SPS data for the first time. Therefore, in period 1, the terminal device may determine whether RMR corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is overlapped with the first time-frequency resource, the time-frequency resource overlapped with the third time-frequency resource needs to be removed from the first time-frequency resource, the remaining time-frequency resource is used as the second time-frequency resource, and if the RMR (third time-frequency resource) which cannot be used to transmit DL SPS data is not overlapped with the first time-frequency resource, the first time-frequency resource is directly used as the second time-frequency resource.

(5) The DL SPS periods available to the rate matching indication field include all periods of the activated DL SPS transmissions.

The access network device configures DL SPS transmissions to the terminal device by higher layer signaling (e.g., RRC signaling SPS-Config), including DL SPS periods starting from a time slot where DCI for activating a DL SPS transmission is received to an end of a time slot where DCI for deactivating a DL SPS transmission is received, or starting from a second time slot corresponding to time-frequency resources where DL SPS data is actually first transmitted to an end of a time slot where DCI for deactivating a DL SPS transmission is received.

Fig. 10 is a schematic diagram illustrating an exemplary DL SPS period available in the rate matching indication field, and as shown in fig. 10, the terminal device receives, at slot 0 of period 0, DCI sent by the access network device for activating DL SPS transmission, where the first slot of the first transmission of DL SPS data indicated by K0 in the DCI is slot 3 of period 0. Since the DL SPS period available in the rate matching indication field covers the entire DL SPS period, from the DL SPS period when the DCI is received until the DL SPS period when the deactivated DCI is received ends (period 3), on each DL SPS period, the terminal device may determine whether RMR corresponding to one or more RateMatchPattern groups 1 and 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, and if RMR (third time-frequency resource) that cannot be used to transmit DL SPS data and overlaps with the first time-frequency resource, it is necessary to discard the time-frequency resource overlapping with the third time-frequency resource from the first time-frequency resource, and if RMR (third time-frequency resource) that cannot be used to transmit DL SPS data does not overlap with the first time-frequency resource, it is necessary to directly use the first time-frequency resource as the second time-frequency resource.

(6) The DL SPS period available for the rate matching indication field includes K consecutive periods starting from the period in which the first time slot is the time slot of the first transmission of DL SPS data indicated by K0 in the DCI.

The higher layer signaling indicates M, and the time unit may be ms, slot, etc., which is not particularly limited. After the higher layer indicates M, the terminal device may calculate the DL SPS periods K corresponding to the M time units, i.e. how many DL SPS periods the M time units cover, and these DL SPS periods are DL SPS periods available for the rate matching indication field.

Fig. 11 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 11, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmission, where a first slot of DL SPS data for a first transmission indicated by K0 in the DCI is slot 3 of period 0. K is 2. Therefore, the DL SPS periods available by the rate matching indication field are period 0 and period 1, that is, in period 0 and period 1, the terminal device may determine whether RMRs corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data according to the value of the rate matching indication field in the DCI, if the RMRs cannot be used to transmit DL SPS data (third time-frequency resource) and overlap with the first time-frequency resource, it is necessary to discard the time-frequency resource overlapping with the third time-frequency resource from the first time-frequency resource, take the remaining time-frequency resource as the second time-frequency resource, and if the RMRs cannot be used to transmit DL SPS data (third time-frequency resource) but do not overlap with the first time-frequency resource, directly take the first time-frequency resource as the second time-frequency resource.

(7) The DL SPS period available for the rate matching indication field includes K consecutive periods, where the K periods start from a period where a second time slot is located, where the second time slot is a time slot corresponding to a time-frequency resource in the first time-frequency resource that actually transmits DL SPS data for the first time.

Fig. 12 is a schematic diagram illustrating an exemplary DL SPS period available in the rate matching indication field, and as shown in fig. 12, the terminal device receives, at slot 0 of period 0, DCI sent by the access network device for activating DL SPS transmission, where the first slot of the first transmission of DL SPS data indicated by K0 in the DCI is slot3 of period 0. K is 2. But due to other factors, slot3 of period 0 (also may be slot3 of period 0-1) cannot transmit DL SPS data, where the DL SPS periods available for the rate matching indication field include 2 consecutive DL SPS periods, i.e., period 1 and period 2, from the period where the second time slot (slot 3 of period 1) is located, corresponding to the time-frequency resource where DL SPS data is actually transmitted for the first time. In period 1 and period 2, the terminal device may determine, according to the value of the rate matching indication field in the DCI, whether RMR corresponding to one or more RateMatchPattern groups 1 and RateMatchPattern groups 2 can be used to transmit DL SPS data, if the RMR (third time-frequency resource) that cannot be used to transmit DL SPS data is overlapped with the first time-frequency resource, it needs to remove the time-frequency resource overlapped with the third time-frequency resource from the first time-frequency resource, take the remaining time-frequency resource as the second time-frequency resource, and if the RMR (third time-frequency resource) that cannot be used to transmit DL SPS data is not overlapped with the first time-frequency resource, directly take the first time-frequency resource as the second time-frequency resource.

Further, in addition to the above schemes, the terminal device may directly determine the first time-frequency resource as the second time-frequency resource on DL SPS periods where the rate matching indication field is not available. That is, on DL SPS periods where the rate matching indication field is unavailable, since the rate matching indication field is invalid, the indicated RMR will not affect the transmission of DL SPS data, so whether the first time-frequency resource and the third time-frequency resource overlap, the terminal device can ignore the rate matching indication field, and directly take the first time-frequency resource as the second time-frequency resource.

As shown in fig. 6 to 9, 11 to 12, the DL SPS period for which the rate matching indication field is not available may be from period 1 to period 3 in fig. 6, or from period 0 to period 3 in fig. 7, or from period 1 to period 3 in fig. 8, or from period 0 to period 3 in fig. 9, or from period 2 to period 3 in fig. 11, or from period 0 to period 3 in fig. 12. In the DL SPS period where the rate matching indication field is unavailable, whether the value of the rate matching indication field in the DCI represents that the RMR corresponding to one or more RateMatchPatternGroup1 and RateMatchPatternGroup2 can be used to transmit DL SPS data, the terminal device may ignore the value of the rate matching indication field, and directly use the first time-frequency resource as the second time-frequency resource.

Further, in addition to the above scheme, when the rate matching indication field is not available on all periods of the activated DL SPS transmission, the first time-frequency resource is determined to be the second time-frequency resource. That is, in this case, the terminal device may directly take the first time-frequency resource as the second time-frequency resource by ignoring the value of the rate matching indication field over all periods of the activated DL SPS transmission.

Fig. 13 shows an exemplary schematic diagram of a DL SPS period available for a rate matching indication field, where, as shown in fig. 13, a terminal device receives, at slot 0 of period 0, DCI sent by an access network device to activate DL SPS transmission, where a first slot of DL SPS data for a first transmission indicated by K0 in the DCI is slot 3 of period 0. The rate matching indication field is not available for all periods of the activated DL SPS transmission, which means that the terminal device can ignore the value of the rate matching indication field and directly take the first time-frequency resource as the second time-frequency resource in all DL SPS periods.

For the above-mentioned multiple schemes for setting DL SPS periods available to the rate matching indication domain, the present application may configure which scheme is specifically adopted by the higher layer signaling. For example, the DL SPS period number or calculation rule that indicates the domain availability for rate matching is written in the higher layer signaling, or the scheme index is written in the higher layer signaling, etc. Through the related value in the higher layer signaling, the terminal device can determine which scheme is specific to determine the time-frequency resource which can be finally used for transmitting the DL SPS data, thereby ensuring the decoding accuracy.

After the second time-frequency resource is determined through the steps, the decoding object of the terminal equipment and the encoding object of the access network equipment can be kept consistent. According to the configuration of the high-layer signaling to the DL SPS transmission, the terminal device may acquire a modulation coding mode for the DL SPS transmission, and further decode the data on the second time-frequency resource by adopting the modulation coding mode.

The application provides a method for determining DL SPS resources, which provides an explicit processing method for judging whether terminal equipment can reject RMR from time-frequency resources configured by access network equipment and used for transmitting DL SPS data when the terminal equipment encounters DL SPS transmission, wherein the RMR is indicated by a rate matching indication field in DCI format 1_1 and is contained in one or more RateMatchPattern groups corresponding to RateMatchPattern, so that the cognition of the access network equipment and the terminal equipment on the time-frequency resources for transmitting the DL SPS data is kept consistent, the error rate is reduced, and the communication efficiency is improved.

Fig. 14 is a schematic structural diagram of an embodiment of a determining apparatus for DL SPS resources in the present application, as shown in fig. 14, an apparatus in this embodiment may include: a receiving module 1401 and a processing module 1402. A receiving module 1401, configured to receive downlink control information DCI sent by a base station, where the DCI is used to activate DL SPS transmission, and the DCI includes rate matching indication information and time-frequency resource indication information; a processing module 1402, configured to determine a first time-frequency resource according to the time-frequency resource indication information, where the first time-frequency resource is a time-frequency resource configured for a terminal device to transmit DL SPS data; determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission; and determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on the DL SPS period in which the rate matching indication information is available, wherein the second time-frequency resource is the time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource.

In a possible implementation manner, the processing module 1402 is specifically configured to determine, according to the rate matching indication information, a third time-frequency resource that is not available for transmitting DL SPS data; judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources or not; and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as the second time-frequency resources.

In a possible implementation manner, the processing module 1402 is further configured to determine the first time-frequency resource as the second time-frequency resource on a DL SPS period in which the rate matching indication information is not available.

In a possible implementation manner, the processing module 1402 is further configured to determine the first time-frequency resource as the second time-frequency resource when the rate matching indication information is not available on all periods of the activated DL SPS transmission.

The apparatus of this embodiment may be a terminal device or a chip in a terminal device, and may include a plurality of functional modules, configured to execute the foregoing method embodiment, for example, the technical scheme of the method embodiment shown in fig. 5, and its implementation principle and technical effect are similar, and are not repeated herein.

In one possible implementation, the present application provides a communication device, including: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the communications device is caused to implement the solution of the method embodiment shown in fig. 5. The communication device may be a terminal device or a chip in the terminal device.

In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an Application Specific Integrated Circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware encoding processor executing, or may be implemented by a combination of hardware and software modules in the encoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

The memory mentioned in the above embodiments may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or, what contributes to the prior art, or part of the technical solutions may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto, and any person skilled in the art may easily think about changes or substitutions within the technical scope of the embodiments of the present application, and all changes and substitutions are included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for determining DL SPS resources, comprising:

receiving Downlink Control Information (DCI) sent by a base station, wherein the DCI is used for activating DL SPS transmission, and comprises rate matching indication information and time-frequency resource indication information;

determining a first time-frequency resource according to the time-frequency resource indication information, wherein the first time-frequency resource is configured for terminal equipment and used for transmitting DL SPS data;

determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission;

determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on a DL SPS period in which the rate matching indication information is available, wherein the second time-frequency resource is a time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource;

Wherein the DL SPS period for which the rate matching indication information is available is one or more periods belonging to all periods of the active DL SPS transmission.

2. The method of claim 1, wherein said determining a second time-frequency resource based on said rate matching indication information and said first time-frequency resource comprises:

determining a third time-frequency resource which is not available for transmitting DL SPS data according to the rate matching indication information;

judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources or not;

and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as the second time-frequency resources.

3. The method of claim 1 or 2, wherein the DL SPS period for which the rate matching indication information is available is a first period, the first period being a period in which a first time slot of transmitting DL SPS data indicated by K0 in the DCI is located.

4. The method of claim 1 or 2, wherein the DL SPS period for which the rate matching indication information is available is a second period, where the second period is a period where a second time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time is located.

5. The method of claim 1 or 2, wherein the DL SPS period for which the rate matching indication information is available is a third period, and N slots are used for repeatedly transmitting the same DL SPS data in the third period, where the N slots are consecutive N slots from a first slot, the first slot is a slot for transmitting DL SPS data for the first time indicated by K0 in the DCI, or the N slots are consecutive N slots from a second slot, and the second slot is a slot corresponding to a time-frequency resource for actually transmitting DL SPS data for the first time in the first time-frequency resources.

6. The method of claim 1 or 2, wherein DL SPS periods for which the rate matching indication information is available include all periods of an activated DL SPS transmission.

7. The method of claim 1 or 2, wherein the DL SPS periods for which the rate matching indication information is available include K consecutive periods, the K periods starting from a period in which a first time slot is a period in which DL SPS data is first transmitted, indicated by K0 in the DCI, or the K periods starting from a period in which a second time slot is a time slot corresponding to a time-frequency resource in which DL SPS data is actually first transmitted in the first time-frequency resource.

8. The method of claim 1, wherein said determining a second time-frequency resource based on said rate matching indication information and said first time-frequency resource further comprises:

and determining the first time-frequency resource as the second time-frequency resource on the DL SPS period in which the rate matching indication information is not available.

9. The method according to claim 1 or 8, further comprising:

and determining the first time-frequency resource as the second time-frequency resource when the rate matching indication information is not available on all periods of the activated DL SPS transmission.

10. A DL SPS resource determining device comprising:

a receiving module, configured to receive downlink control information DCI sent by a base station, where the DCI is used to activate DL SPS transmission, and the DCI includes rate matching indication information and time-frequency resource indication information;

the processing module is used for determining a first time-frequency resource according to the time-frequency resource indication information, wherein the first time-frequency resource is configured for the terminal equipment and used for transmitting DL SPS data; determining whether the rate matching indication information is available for at least one period of an active DL SPS transmission; determining a second time-frequency resource according to the rate matching indication information and the first time-frequency resource on a DL SPS period in which the rate matching indication information is available, wherein the second time-frequency resource is a time-frequency resource which can be used for transmitting DL SPS data in the first time-frequency resource; wherein the DL SPS period for which the rate matching indication information is available is one or more periods belonging to all periods of the active DL SPS transmission.

11. The apparatus according to claim 10, wherein the processing module is configured to determine a third time-frequency resource that is not available for transmitting DL SPS data according to the rate matching indication information; judging whether the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources or not; and when the third time-frequency resource and the first time-frequency resource contain overlapped time-frequency resources, determining the time-frequency resources except the overlapped time-frequency resources in the first time-frequency resources as the second time-frequency resources.

12. The apparatus of claim 10 or 11, wherein the DL SPS period for which the rate matching indication information is available is a first period, the first period being a period in which a first time slot of transmitting DL SPS data indicated by K0 in the DCI is located.

13. The apparatus of claim 10 or 11, wherein the DL SPS period for which the rate matching indication information is available is a second period, the second period being a period in which a second time slot corresponding to a time-frequency resource in which DL SPS data is actually transmitted for the first time in the first time is located.

14. The apparatus of claim 10 or 11, wherein the DL SPS period for which the rate matching indication information is available is a third period, and N slots are used for repeatedly transmitting the same DL SPS data in the third period, where the N slots are consecutive N slots starting from a first slot, the first slot is a slot for transmitting DL SPS data for the first time indicated by K0 in the DCI, or the N slots are consecutive N slots starting from a second slot, and the second slot is a slot corresponding to a time-frequency resource for actually transmitting DL SPS data for the first time in the first time-frequency resources.

15. The apparatus of claim 10 or 11, wherein DL SPS periods for which the rate matching indication information is available comprise all periods of an activated DL SPS transmission.

16. The apparatus of claim 10 or 11, wherein the DL SPS period for which the rate matching indication information is available includes K consecutive periods, the K periods starting from a period in which a first time slot is a period in which DL SPS data is first transmitted, indicated by K0 in the DCI, or the K periods starting from a period in which a second time slot is a time-frequency resource corresponding to the time-frequency resource in which DL SPS data is actually first transmitted in the first time-frequency resource.

17. The apparatus of claim 10, wherein the processing module is further configured to determine the first time-frequency resource as the second time-frequency resource over DL SPS periods for which the rate matching indication information is not available.

18. The apparatus of claim 10 or 17, wherein the processing module is further configured to determine the first time-frequency resource as the second time-frequency resource when the rate matching indication information is not available for all periods of an active DL SPS transmission.

19. A communication device, comprising:

one or more processors;

a memory for storing one or more programs;

the one or more programs, when executed by the one or more processors, cause the communication device to implement the method of any of claims 1-9.

20. A computer readable storage medium comprising a computer program which, when executed on a computer, causes the computer to perform the method of any of claims 1-9.