CN115441987A - Semi-static scheduling method and communication device - Google Patents
Semi-static scheduling method and communication device Download PDFInfo
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Abstract
The application provides a semi-static scheduling method and a communication device, wherein a sending end associates semi-static transmission with a search space of a receiving end in configuration information for configuring the semi-static transmission, and the search space is effective during activation of the semi-static transmission. The receiving end monitors the control channel candidates of the search space to receive a first control channel, wherein the first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission. The method can meet the requirement of low power consumption of the receiving end. In addition, the configuration parameters of the semi-static transmission can be flexibly changed to adapt to the change of the channel state, and the reliability of the semi-static transmission is improved.
Description
The present application claims priority of chinese patent application entitled "an SPS scheduling method" filed by the national intellectual property office at 6/1/2021 under the application number 202110610954.4, the entire contents of which are incorporated herein by reference.
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and a communications apparatus for semi-persistent scheduling.
Background
Real-time broadband communication (RTBC) scenes in future communication systems aim to support large bandwidth and low interaction delay, and the aim is to improve the bandwidth by 10 times under the given delay and certain reliability requirements and create immersive experience when people interact with a virtual world. Wherein, extended real-time professional (XR Pro) services with ultra-high bandwidth and ultra-low delay requirements are paired with the fifth generation (the 5) th generation, 5G) mobile communication technology presents more serious challenges. XR mainly includes Virtual Reality (VR), augmented Reality (AR), and Mixed Reality (MR) virtual and reality interaction technologies. During the downlink transmission, the XR content of the server generates data content at a fixed frequency (for example, 60hz, 120hz), and is transmitted to the terminal device of XR by the base station side. In addition, due to the requirement of graph generation, devices such as AR and MR need to be internally provided with a camera to acquire and continuously upload the current scene image at a specific frequency (for example, 60 Hz), so AR and MR also provide a low-delay requirement for uplink transmission.
In the current New Radio (NR), two scheduling modes, namely dynamic scheduling and unlicensed scheduling, are provided for uplink transmission and downlink transmission. The dynamic scheduling may configure different parameters for each transmission to adapt to the change of the channel state, but the dynamic scheduling requires the receiving end to blindly detect the control information, which increases the power consumption overhead of the receiving end. The unlicensed scheduling has the characteristic of being configured once for multiple use, namely, after the parameters are configured once, the configured parameters are adopted for subsequent transmission. Although, under the unlicensed scheduling, the receiving end does not need to blindly detect the control information. However, the change of the configuration parameters of the semi-static transmission requires the reconfiguration or reactivation through the control information. In this case, the receiving end still needs to detect the control information in a blind manner, which brings power consumption overhead.
Disclosure of Invention
The application provides a semi-static scheduling method and a communication device, which can flexibly change configuration parameters of semi-static transmission and meet the requirement of low power consumption.
In a first aspect, a method for semi-persistent scheduling is provided, where the method includes:
a receiving end receives configuration information, wherein the configuration information is used for configuring a first Search Space (SS) related to semi-static transmission, and the first SS is effective in the activation period of the semi-static transmission;
and a receiving end receives a first control channel, wherein the first control channel belongs to the first SS, and the first control channel indicates the information of the modulation mode and/or the coding mode of the semi-static transmission.
Alternatively, the first control channel may be scrambled via a cell-radio network temporary identifier (C-RNTI) or a configured scheduled radio network temporary identifier (CS-RNTI).
Optionally, the configuration information may also be used to configure a first set of SSs (SS set) associated with semi-static transmission. That is, in the present application, the semi-static transmission is associated with one SS, or the semi-static transmission is associated with one SS set, which is not limited.
In the technical scheme provided by the application, semi-static transmission is associated with one SS, and the SS is effective during the activation period of the semi-static transmission. The receiving end monitors the control channel candidate of the SS during the activation period of the semi-static transmission, receives a first control channel, and the first control channel indicates the information of the modulation mode and/or the coding mode of the semi-static transmission, so that the power consumption of the receiving end for blindly detecting the information of the modulation mode and/or the coding mode of the semi-static transmission data in the semi-static transmission is reduced.
In addition, according to the technical scheme, the configuration parameters of the semi-static transmission (for example, the MCS information of the semi-static transmission) can be flexibly changed to adapt to the change of the channel state, and the reliability of the semi-static transmission can be improved.
With reference to the first aspect, in certain implementations of the first aspect, the first SS being active during activation of the semi-static transmission includes:
and monitoring the control channel candidate of the first SS by a receiving end during the activation period of the semi-static transmission, wherein the activation period is a time interval from the receiving of the configuration information to the receiving of the configuration information for releasing the semi-static transmission.
That is, the configuration information is used for configuring the semi-static transmission associated first SS, and is also used for activating the semi-static transmission at the same time, and the configuration information may be referred to as first configuration information. The configuration information for releasing the semi-static transmission may be referred to as second configuration information, and a time interval between a time when the receiving end receives the first configuration information and a time when the receiving end receives the second configuration information is an activation period of the semi-static transmission.
Optionally, as an example, the second configuration information may be an RRC signaling or DCI signaling.
Alternatively, in another implementation, the activation period may also be a time interval between receiving activation signaling for activating the semi-static transmission and receiving deactivation signaling.
That is, the configuration information is used to configure the first SS associated with the semi-static transmission, and in addition, the semi-static transmission may be activated through an activation signaling, and the semi-static transmission may be deactivated through a deactivation signaling.
Alternatively, the activation period may also refer to a time interval from the receiving end receiving the configuration information to the releasing of the semi-static transmission.
With reference to the first aspect, in certain implementations of the first aspect, the monitoring, by the receiving end, control channel candidates of the first SS during activation of the semi-static transmission includes:
a receiving end receives a first activation signaling, wherein the first activation signaling is used for activating the semi-static transmission;
the receiving end monitors the control channel candidates of the first SS while or after the semi-static transmission is activated.
Alternatively, in some implementations, the configuration information is used to activate the semi-static transmission.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes:
a receiving end receives a first deactivation signaling, wherein the first deactivation signaling is used for deactivating the semi-static transmission;
and the receiving end stops monitoring the control channel candidate of the first SS after receiving the first deactivation signaling.
With reference to the first aspect, in certain implementations of the first aspect, the configuration information is used to activate the semi-static transmission.
With reference to the first aspect, in certain implementations of the first aspect, the configuring information is used to configure a first SS associated with semi-static transmission, and includes:
the configuration information indicates an index of the first SS; or,
the configuration information includes a set of configuration parameters for the first SS, including one or more configuration parameters for the first SS.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes:
a receiving end receives first data after receiving the first control channel, wherein the first data is scheduled by the semi-static transmission;
and the receiving end decodes the first data according to the information of the modulation mode and/or the coding mode indicated by the first control channel.
It should be appreciated that the first control channel is obtained by monitoring the control channel candidates of the first SS.
With reference to the first aspect, in certain implementations of the first aspect, a period of the semi-static transmission is less than or equal to a monitoring period of the first SS.
With reference to the first aspect, in some implementations of the first aspect, the monitoring time of the first SS and the first time are located in the same timeslot, where the first time is a transmission time of semi-static transmission that is after the monitoring time of the first SS and is closest to the monitoring time of the first SS.
With reference to the first aspect, in certain implementations of the first aspect, the first control channel is further configured to indicate whether to blindly detect a second control channel at a second time instant; the second control channel is used for scheduling second data, and the second time is later than the monitoring time of the first control channel.
In this implementation manner, whether the second control channel is continuously blind-checked after the semi-static transmission data (i.e., the first data) is received is indicated by the first control channel, so that the number of times of blind-checking the control channel by the receiving end is reduced, the receiving end does not need to wait for the next period to perform blind-checking, and the time delay can be reduced.
Furthermore, this approach increases the flexibility of dynamic scheduling in case the second control channel is used for dynamically scheduling the second data.
With reference to the first aspect, in certain implementations of the first aspect, the first control channel is further configured to indicate a blind detection of a second control channel and a time range of the blind detection of the second control channel, where the second control channel is used to schedule second data.
With reference to the first aspect, in certain implementations of the first aspect, the semi-static transmission is further associated with a second SS, and the second control channel is obtained by monitoring control channel candidates of the second SS.
With reference to the first aspect, in some implementations of the first aspect, the configuration information is further used to configure information of HARQ processes corresponding to the M data transmission units scheduled by the semi-persistent transmission,
and the first control channel is further configured to indicate M HARQ process numbers corresponding to the M data transmission units, where M is greater than 1 and is an integer.
In the implementation manner, the first control channel indicates M HARQ process numbers corresponding to M data transmission units of semi-static transmission scheduling, and the HARQ process number indicating each data transmission unit in each semi-static transmission opportunity is displayed, so that collision of HARQ processes can be avoided.
Furthermore, the problems of system resource waste and receiving end data decoding ambiguity caused by the collision of the HARQ process are avoided, so that the utilization rate of the system resources is improved, and the accuracy of data decoding is improved.
With reference to the first aspect, in some implementation manners of the first aspect, the first control channel is further configured to indicate information of M HARQ processes corresponding to the M data transmission units, and the information includes:
the first control channel is further configured to indicate offset information of each of the M HARQ processes corresponding to the M data transmission units, where the offset information of an HARQ process corresponding to a j-th data transmission unit in the M data transmission units indicates an offset of an HARQ process number corresponding to the j-th data transmission unit in the current semi-persistent scheduling transmission opportunity with respect to an HARQ process number corresponding to the j-th data transmission unit configured by the configuration information in the current semi-persistent scheduling transmission opportunity, where 1 is j less than or equal to M, and j is an integer.
In the implementation mode, the offset information of the HARQ processes of the M data transmission units subjected to semi-static transmission scheduling is indicated through the first control channel, so that the indication overhead of a system is reduced on the basis of avoiding the collision of the HARQ processes.
In a second aspect, a method for semi-persistent scheduling is provided, the method including:
a receiving end receives configuration information, wherein the configuration information is used for configuring a first search space SS related to semi-static transmission;
a receiving end receives a first control channel, wherein the first control channel belongs to the first SS, the first control channel indicates the semi-static transmission of information of M hybrid automatic repeat request (HARQ) processes corresponding to M data transmission units scheduled by the semi-static transmission, and M is an integer greater than 1.
In the technical scheme of the application, M HARQ process numbers corresponding to M data transmission units scheduled by semi-static transmission are indicated through a first control channel, the HARQ process number of each data transmission unit in each semi-static transmission opportunity is indicated, and collision of HARQ processes can be avoided.
With reference to the second aspect, in some implementation manners of the second aspect, the first control channel is further configured to indicate information of M HARQ processes corresponding to the M data transmission units, and the information includes:
the first control channel is further configured to indicate offset information of each of the M HARQ processes corresponding to the M data transmission units, where the offset information of an HARQ process corresponding to a j-th data transmission unit in the M data transmission units indicates an offset of an HARQ process number corresponding to the j-th data transmission unit in the current semi-persistent scheduling transmission opportunity with respect to an HARQ process number corresponding to the j-th data transmission unit configured by the configuration information in the current semi-persistent scheduling transmission opportunity, where 1 is j less than or equal to M, and j is an integer.
Furthermore, the problems of system resource waste and receiving end data decoding fuzziness caused by the collision of the HARQ process are also avoided, so that the utilization rate of the system resources is improved, and the accuracy of data decoding is improved.
In a third aspect, a method for semi-persistent scheduling is provided, where the method includes:
a sending end sends configuration information, wherein the configuration information is used for configuring a first Search Space (SS) related to semi-static transmission, and the first SS is effective in the activation period of the semi-static transmission;
and the sending end sends a first control channel, the first control channel belongs to the first SS, and the first control channel indicates the information of the modulation mode and/or the coding mode of the semi-static transmission.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes:
and the sending end sends a first activation signaling, and the first activation signaling is used for activating the semi-static transmission.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes:
a sending end sends a first deactivation signaling, and the first deactivation signaling is used for deactivating the semi-static transmission.
With reference to the third aspect, in certain implementations of the third aspect, the configuration information is used to activate the semi-static transmission.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes:
and the sending end sends first data after sending the first control channel, wherein the first data is scheduled by the semi-static transmission.
With reference to the third aspect, in some implementations of the third aspect, the configuring information is used to configure a first SS associated with semi-static transmission, and includes:
the configuration information indicates an index of the first SS; or,
the configuration information includes a set of configuration parameters for the first SS, including one or more configuration parameters for the first SS.
With reference to the third aspect, in certain implementations of the third aspect, a period of the semi-static transmission is less than or equal to a monitoring period of the first SS.
With reference to the third aspect, in certain implementations of the third aspect, the monitoring time of the first SS is located in the same time slot as a first time, where the first time is a transmission time of a semi-static transmission that is after and closest to the monitoring time of the first SS.
With reference to the third aspect, in some implementations of the third aspect, the semi-static transmission is also associated with a second SS, and the second control channel is obtained by monitoring control channel candidates of the second SS.
With reference to the third aspect, in some implementations of the third aspect, the configuration information is further used to configure information of HARQ processes corresponding to the M data transmission units scheduled by the semi-static transmission,
and the first control channel is further configured to indicate M HARQ process numbers corresponding to the M data transmission units, where M is greater than 1 and is an integer.
With reference to the third aspect, in some implementations of the third aspect, the first control channel is further configured to indicate information of M HARQ processes corresponding to the M data transmission units, and the information includes:
the first control channel is further configured to indicate respective offset information of the M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the j-th data transmission unit in the M data transmission units represents an offset of the HARQ process number corresponding to the j-th data transmission unit in the current semi-static scheduling transmission opportunity relative to the HARQ process number corresponding to the j-th data transmission unit configured by the configuration information in the current semi-static scheduling transmission opportunity, where j is 1 & lt j & gt & lt/M, and j is an integer.
The third aspect corresponds to the transmitting end of the method of the first aspect, and the technical effects thereof may refer to the description of the first aspect, which is not described herein again.
In a fourth aspect, a method for semi-persistent scheduling is provided, the method comprising:
a sending end sends configuration information, wherein the configuration information is used for configuring a first search space SS related to semi-static transmission;
and a sending end sends a first control channel, wherein the first control channel belongs to the first SS, the first control channel indicates the semi-static transmission of information of M hybrid automatic repeat request (HARQ) processes corresponding to M data transmission units scheduled by the semi-static transmission, and M is an integer greater than 1.
The fourth aspect corresponds to the transmitting end of the method of the second aspect, and for technical effects, reference may be made to the description of the second aspect, which is not described herein again.
With reference to the fourth aspect, in some implementation manners of the fourth aspect, the first control channel is further configured to indicate information of M HARQ processes corresponding to the M data transmission units, and the information includes:
the first control channel is further configured to indicate offset information of each of the M HARQ processes corresponding to the M data transmission units, where the offset information of an HARQ process corresponding to a j-th data transmission unit in the M data transmission units indicates an offset of an HARQ process number corresponding to the j-th data transmission unit in the current semi-persistent scheduling transmission opportunity with respect to an HARQ process number corresponding to the j-th data transmission unit configured by the configuration information in the current semi-persistent scheduling transmission opportunity, and j is an integer and is equal to or less than 1 and equal to M.
In a fifth aspect, there is provided a communication device having functionality to implement the method of the first aspect or the second aspect, or any possible implementation of these aspects. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.
A sixth aspect provides a communication device having functionality to implement the method of the third or fourth aspect, or any possible implementation form of these aspects. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.
In a seventh aspect, a communications apparatus is provided that includes a processor and a memory. Optionally, a transceiver may also be included. Wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and controlling the transceiver to transmit and receive signals, so as to make the communication device execute the method as in the first aspect or the second aspect, or any possible implementation manner of these aspects.
Illustratively, the communication device is a receiving end of wireless communication.
In an eighth aspect, a communications apparatus is provided that includes a processor and a memory. Optionally, a transceiver may also be included. Wherein the memory is used for storing the computer program, and the processor is used for calling and running the computer program stored in the memory, and controlling the transceiver to transmit and receive signals, so as to make the communication device execute the method as in the third aspect or the fourth aspect, or any possible implementation manner of the aspects.
Illustratively, the communication device is a transmitting end of wireless communication.
A ninth aspect provides a communication device comprising a processor and a communication interface for receiving data and/or information and transmitting the received data and/or information to the processor, the processor processing the data and/or information, and the communication interface further being adapted to output the data and/or information after processing by the processor, such that the method as in the first or second aspect, or any possible implementation of these aspects, is performed.
A tenth aspect provides a communication device comprising a processor and a communication interface for receiving data and/or information and transmitting the received data and/or information to the processor, the processor processing the data and/or information, and the communication interface further being adapted to output the data and/or information after processing by the processor, such that the method as in the third or fourth aspect, or any possible implementation of these aspects, is performed.
In an eleventh aspect, there is provided a computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause a method as in the first or second aspect, or any possible implementation of these aspects, to be performed.
In a twelfth aspect, there is provided a computer readable storage medium having stored therein computer instructions which, when run on a computer, cause a method as in the third or fourth aspect, or any possible implementation of these aspects, to be performed.
A thirteenth aspect provides a computer program product comprising computer program code to, when run on a computer, cause a method as in the first or second aspect, or any possible implementation of these aspects, to be performed.
A fourteenth aspect provides a computer program product comprising computer program code to, when run on a computer, cause a method as in the third or fourth aspect, or any possible implementation of these aspects, to be performed.
A fifteenth aspect provides a wireless communication system comprising the communication apparatus according to the fifth aspect, and the communication apparatus according to the sixth aspect.
Drawings
Fig. 1 is a schematic diagram of a communication system suitable for use in embodiments of the present application.
Fig. 2 is a schematic flowchart of a method for semi-persistent scheduling provided in the present application.
Fig. 3 shows a schematic diagram of an SPS scheduling one or more data transmission units.
Fig. 4 shows a schematic diagram of relative time domain positions of the first indication information and the semi-static transmission scheduled data in the first control channel.
Fig. 5 is an example of applying the method for semi-persistent scheduling provided by the present application to uplink transmission.
Fig. 6 is another example of applying the method for semi-persistent scheduling provided by the present application to uplink transmission.
Fig. 7 shows a schematic diagram of the first control channel including the second indication information.
Fig. 8 illustrates a diagram in which the first control channel includes third indication information.
Fig. 9 is a HARQ process under an incremental redundancy scheme.
Fig. 10 is a diagram illustrating a process of data transmission using multiple HARQ processes.
Fig. 11 is an illustration of allocating multiple HARQ processes for SPS transmissions.
Fig. 12 is a diagram of a scenario for generating a HARQ process collision.
Fig. 13 is another scenario diagram of HARQ process collision generation.
Fig. 14 is another semi-persistent scheduling method provided in the present application.
Fig. 15 is a diagram illustrating an HARQ process indicating semi-static transmission according to the present application.
Fig. 16 is another diagram of a HARQ process indicating semi-static transmission in the present application.
Fig. 17 is a schematic block diagram of a communication device provided herein.
Fig. 18 is a schematic configuration diagram of a communication device provided in the present application.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
In order to facilitate understanding of the technical solutions of the present application, some technologies involved in the present application will be briefly described first.
In NR, scheduling of an uplink is divided into two types, a dynamic scheduling transmission and a Configuration Grant (CG) -free scheduling transmission, and the CG-free scheduling transmission is hereinafter simply referred to as CG transmission. In the dynamic scheduling transmission, before uplink data transmission, the UE sends a transmission request to the base station and reports the amount of data to be transmitted. And the base station allocates corresponding transmission resources for the UE according to the information reported by the UE. Dynamic scheduling may configure different parameters for each transmission to accommodate changes in channel conditions. However, dynamic scheduling requires blind detection of control information by the receiving end, which increases the power consumption overhead of the receiving end. The configuration authorization scheduling-free transmission means that the UE autonomously performs periodic uplink data transmission on resources for realizing configuration or activation without sending a scheduling request to the base station and waiting for an uplink scheduling grant of the base station every time the UE transmits. The uplink scheduling-free transmission comprises type1 and type2, wherein for type1, the uplink scheduling-free transmission configuration is completed through RRC signaling. For type2, the uplink non-scheduling transmission configuration is first configured by the base station through RRC signaling, and then the base station activates uplink transmission through Downlink Control Information (DCI) signaling. Compared with dynamic scheduling transmission, in scheduling-free transmission, the receiving end does not need to detect control information blindly. However, if the configuration parameters transmitted by the CG are changed, reactivation or reconfiguration is required, which still requires the receiving end to blindly detect the control information, resulting in power consumption overhead.
In addition, in downlink transmission, NR also provides two scheduling modes, namely semi-persistent scheduling (SPS) transmission for dynamic scheduling and pre-configured grant. In dynamic scheduling, the UE needs to monitor (monitor) a Physical Downlink Control Channel (PDCCH) all the time, and determine a scheduling signaling for the terminal through cell-radio network temporary identifier (C-RNTI) information carried by the PDCCH. The blind detection power consumption of the UE is also relatively large. In the pre-configured authorized SPS transmission, the base station configures the downlink SPS resource period through RRC signaling, but does not activate SPS. Similar to the type2 process of uplink transmission, the base station sends a PDCCH scrambled by a configured scheduling radio network temporary identifier (CS-RNTI) for activating or deactivating the SPS, and indicates a resource used for a first transmission of the SPS. The UE determines whether downlink SPS is activated by monitoring the PDCCH, and the resource location of subsequent SPS. After downlink SPS is activated, the UE may receive downlink transmissions at the pre-configured resource location.
In wireless transmission, the variation of an air interface channel can easily cause error codes of a transmitted signal. To solve this problem, the current third generation partnership project (3 gpp) standard employs a Modulation and Coding Scheme (MCS) based on a channel status, i.e., parameters of the MCS are adjusted according to the channel status. When the channel state is poor, the base station can adopt the low-order MCS to transmit data, thereby ensuring the correct rate of data transmission. But the low order MCS guarantees signal transmission quality at the expense of increased signal redundancy, and thus, reduces system bandwidth efficiency. When the channel state is good, the base station can adopt a high-order MCS to transmit signals, thereby improving the bandwidth efficiency.
The scheduling-free SPS transmission or CG transmission has the characteristics of one-time configuration and multiple transmissions, namely, after one-time parameter configuration, the configured parameter is adopted by all subsequent data transmitted by the SPS transmission or the CG transmission.
However, if the configuration parameters of the semi-static transmission change, one existing scheme is to perform reconfiguration or reactivation through control information; another approach is to reconfigure or reactivate for each SPS or CG transmission. Frequent reactivation or reconfiguration requires frequent blind detection of control information by the UE, increasing power consumption of the UE.
In order to solve the problem of large power consumption of blind detection of a receiving end in scheduling-free transmission, the application provides a semi-static scheduling method, which can flexibly change the transmission configuration of semi-static scheduling so as to adapt to the change of a channel state and meet the requirement of low power consumption.
The technical solution of the embodiment of the present application may be applied to various communication systems, including but not limited to: a New Radio (NR) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. Furthermore, the present invention can also be applied to device-to-device (D2D) communication, vehicle-to-outside-association (V2X) communication, machine-to-machine (M2M) communication, machine Type Communication (MTC), internet of things (IoT) communication system or other communication systems, and the like.
A communication system suitable for use in the present application may include one or more transmitting ends and one or more receiving ends. Alternatively, one of the sending end and the receiving end may be a terminal device, and the other may be a network device. Or alternatively. The transmitting end and the receiving end may both be terminal devices.
Illustratively, a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a device providing voice and/or data connectivity to a user, and may be used for connecting people, things, and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a notebook computer, a palmtop computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. Alternatively, the UE may be configured to act as a base station. For example, the UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc.
In the embodiment of the present application, the apparatus for implementing the function of the terminal may be the terminal, or may be an apparatus capable of supporting the terminal to implement the function, such as a system on a chip or a chip, and the apparatus may be installed in the terminal. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
Illustratively, the network device may be a device having a wireless transceiving function, which may be a device providing a wireless communication function service, and is generally located on a network side, including but not limited to a next generation base station (gnnodeb, gNB) in a fifth generation (5 th generation,5 g) communication system, a base station in a sixth generation (6 th generation,6 g) mobile communication system, a base station in a future mobile communication system or an access Node in a wireless fidelity (WiFi) system, etc., an evolved Node B (eNB) in a Long Term Evolution (LTE) system, a Radio Network Controller (RNC), a Node B (Node B, NB), a base station controller (BTS), a home base station (e.g., home evolved Node B, or Node B, trpho), a base band unit (base band, transmission point, base station (BBU), a transmission point, etc.), a Base Transceiver Station (BTS), a home base station (transceiver station, etc. In one network structure, the network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node and a user plane CU node, and a RAN device of a DU node, or the network device may also be a wireless controller, a relay station, an in-vehicle device, a wearable device, and the like in a Cloud Radio Access Network (CRAN) scenario. Further, the base station may be a macro base station, a micro base station, a relay node, a donor node, or a combination thereof. A base station may also refer to a communication module, modem, or chip for locating within the aforementioned apparatus or devices. The base station may also be a mobile switching center, a device that performs a function of a base station in D2D, V2X, M2M communication, a network device in a 6G network, a device that performs a function of a base station in a future communication system, and the like. The base station may support networks of the same or different access technologies, without limitation.
In this embodiment, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip or a chip, and the apparatus may be installed in the network device. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
In addition, the technical solution of the present application may be applied to various mobile communication scenarios, for example, scenarios such as point-to-point transmission between a base station and a UE or between UEs, relay transmission between a base station and a UE, dual Connectivity (DC) or multi-connectivity between a plurality of base stations and UEs, and the like.
Referring to fig. 1, fig. 1 is a schematic diagram of a communication system suitable for use in embodiments of the present application. Referring to fig. 1, a communication system 100 includes a network device 101 and at least one terminal device (e.g., terminal devices 102-106 of fig. 1). Communication system 100 supports uplink or downlink transmissions between network device 101 and terminal devices (e.g., terminal devices 102-106). Illustratively, the terminal devices 103,104, and 106 may be smart phones. The terminal device 102 may be an automobile or a vehicle-mounted device. The terminal device 105 may be VR glasses. Alternatively, communication system 100 may support sidelink (sidelink) communication techniques, such as, for example, sidelink communication between terminal devices 102 and 103, sidelink communication between terminal devices 105 and 106, etc., in fig. 1.
The method for semi-persistent scheduling provided by the present application is described below.
It should be noted that the semi-persistent scheduling mentioned in this application may refer to CG transmission in uplink transmission, or SPS transmission in downlink transmission, or CG transmission or SPS transmission of sidelink (sidelink). Or, the technical scheme of the application is suitable for CG transmission and SPS transmission.
In the following embodiments, a transmitting end of semi-persistent scheduling transmission is simply referred to as a transmitting end, and a receiving end of semi-persistent scheduling transmission is simply referred to as a receiving end. Alternatively, one of the sending end and the receiving end may be a network device, and the other is a terminal device, for example, uplink transmission or downlink transmission between the base station and the terminal device. Alternatively, both the sending end and the receiving end may be terminal devices, for example, a sideline transmission between terminal devices, which is not limited.
Referring to fig. 2, fig. 2 is a schematic flow chart of a method of semi-persistent scheduling provided herein.
210. The sending end sends the configuration information, and the receiving end receives the configuration information from the sending end.
Wherein the configuration information is used for configuring a first Search Space (SS) or a (SS set) associated with semi-static transmission, and the first SS is valid during activation of the semi-static transmission.
Alternatively, the first SS may be a Common Search Space (CSS) or a user equipment specific search space (USS), without limitation.
The configuration information in this application is used to configure semi-static transmission, and optionally, the semi-static transmission may be uplink CG transmission or downlink SPS transmission, and may also be sidelink transmission, without limitation.
Taking downlink SPS transmission as an example, the configuration information may be SPS configuration.
As an example, the SPS configuration may be associated with the SS by adding a parameter searchspace id (e.g., an italic part) to the SPS configuration, where the partial fields of the SPS configuration may be as follows:
as another example, the SPS configuration may also be associated with the SS by configuring a configuration parameter set (such as an italic part) of searchSpace in the SPS configuration, and at this time, partial fields of the SPS configuration may be as follows:
in addition, in order to reduce the blind detection complexity of the receiving end, a new DCI format may be introduced. Correspondingly, new DCI parameters are introduced for searchSpace, such as format-X defined additionally in DCI-Formats parameter in ue-Specific, the fields are as follows:
alternatively, a new parameter may be introduced in searchSpace, for example, a dci-formats-SPS-CG parameter is added in ue-Specific to indicate the first control channel format in association with semi-persistent scheduling, and the fields are as follows:
it should be understood that, the above description takes formats-X as an example, and other DCI formats may be used, and are not limited.
The SPS configuration and the SS may be associated in other ways besides the above example of associating the SPS configuration and the SS. For example, the SPS-configId may be added to the searchspace field to associate the SS with an SPS configuration, or the SPS-configlist may be added to the searchspace field to associate one or more SPS configurations with the SS. Among them, one or more SPS configurations may be included in the SPS-configlist. That is, multiple SPS configurations may be associated with one SS.
In addition, the SPS configuration may include many other parameters besides the associated SS, such as, but not limited to, the period of SPS transmission, HARQ process number, MCS information, and the like.
Alternatively, the first SS may be configured centrally in the parameters of the SPS configuration, for example, the above fields of the SPS configuration contain a plurality of parameters, which may contain an index of the first SS, for example: an Identity (ID) of the first SS. Alternatively, the first SS may be a search space that is already configured through RRC signaling, i.e., the configuration of the first SS is independent of the SPS configuration.
Alternatively, as an implementation, only one data transmission unit can be scheduled at a time by one SPS.
Alternatively, as another implementation, one SPS may schedule multiple data transmission units at a time.
Further, multiple SPSs may be associated with one SS.
Illustratively, the data transmission unit may be a Transport Block (TB), a slot (slot), a millisecond, a frame (frame), or a sub-frame (sub-frame), and the like, without limitation.
Fig. 3 shows a schematic diagram of an SPS scheduling one or more data transmission units. In case of a SubCarrier Spacing (SCS) of 15kHz, as in (a) of fig. 3, one SPS may schedule 1 TB at a time, and the periodicity of the SPS is 10ms, that is, there is a chance of SPS transmission once every 10ms. The transmitting end schedules 4 TBs (e.g., D00, D01, D02, and D03) through 4 SPSs (e.g., SPS0, SPS1, SPS2, and SPS 3). As in fig. 3 (b), one SPS may schedule multiple TBs (e.g., 4) at a time, with a periodicity of 10ms for the SPS. The transmitting end schedules 4 TBs (e.g., D00, D01, D02, and D03) through 1 SPS (e.g., SPS 0).
Optionally, after step 210, the sender activates the semi-static transmission through activation signaling, as in step 220.
220. And the sending end sends an activation signaling, and the activation signaling is used for activating the semi-static transmission.
The receiving end receives the activation signaling from the transmitting end.
230. The sending end sends a first control channel, and the receiving end receives the first control channel.
The first control channel belongs to the first SS, and the first control channel indicates the information of the modulation mode and/or the coding mode of the semi-static transmission.
Specifically, the receiving end receives the configuration information, and the configuration information is associated with the first SS. And the receiving end receives an activation signaling from the transmitting end, wherein the activation signaling is used for activating the semi-static transmission. After receiving the activation signaling, the receiving end monitors control channel candidates (control channels) of the first SS to obtain a first control channel. It should be understood that the first control channel is one of the control channel candidates of the first SS.
Alternatively, the control channel candidates may also be referred to as a candidate control channel set.
Each control channel may correspond to a set of candidate control channels, and each control channel may correspond to a search space, for example. For the same type of control channel, the candidate control channel resource cannot be larger than the search space, which is an example of behavior that the set of candidate control channels configurable by the base station is equal to the set of control channels that the UE needs to monitor, or the set of candidate control channels configurable by the base station is a subset of the set of control channels that the UE needs to monitor.
Illustratively, the following features may be used to distinguish the kind of control channel:
(1) Control channels aggregated from different numbers of Control Channel Elements (CCEs) belong to different control channels: one control channel is formed by aggregating m continuous CCEs (control channel elements), wherein m is a positive integer, for example, m is 1,2,4 or 8, and the value of m is not limited in the application;
(2) Control channels corresponding to different control information formats belong to different control channels: the format of the control information carried by one control channel may be a standard-defined control information format;
(3) Different unit carriers for carrying data channels correspond to different control channels.
In this application, "indicating" may indicate explicitly and/or implicitly. Illustratively, the implicit indication may be based on a location and/or resources used for the transmission; the explicit indication may be based on one or more parameters, and/or one or more indices, and/or one or more bit patterns that it represents. Furthermore, "indication" may also mean "including", for example, that the first control channel indicates information of a modulation scheme and/or a coding scheme of the semi-static transmission, and may also be expressed as: the first control channel contains information of a modulation mode and/or a coding mode of the semi-static transmission.
Illustratively, the first control channel indicates information of a modulation scheme and/or a coding scheme of the semi-static transmission, and may specifically be indicated by control information in the first control channel. In the following behavior example, the control channel candidates may be PDCCH candidates, the first control channel may be a first PDCCH, and the control information in the first control channel may be any downlink DCI. Hereinafter, the downlink control information in the first PDCCH is denoted as DCI X, which may be any DCI format (format), such as DCI1_0, DCI1 \_1, and so on.
Fig. 4 is a schematic diagram of the relative time domain positions of DCI X and semi-static transmission scheduled data. As shown in fig. 4, 4 data transmission units are scheduled per SPS transmission opportunity, one DCI X is configured per SPS transmission opportunity, and the DCI X may be located before the first data transmission unit. For example, in the 2 SPS transmission opportunities shown in fig. 4, DCI X is split to precede D00 and D10. In addition, fig. 4 only shows that 4 data transmission units are scheduled per SPS transmission opportunity, and the number of data transmission units that can be scheduled per SPS transmission opportunity may also be other values, for example, 3, 5, etc. Optionally, the configuration information may further indicate the number L of data transmission units scheduled per SPS transmission opportunity. Alternatively, D00-D03 may be one or more SPS scheduled data transmission units.
The receiving end receives the first CCH by monitoring CCH candidates of the first SS and obtains control information in the first CCH. According to the control information in the first CCH, the receiving end may obtain information of the modulation and/or coding scheme of the semi-static transmission scheduled by the configuration information, and then decode the semi-static transmission data.
It should be understood that the information of the modulation scheme and/or coding scheme indicated by one DCI X is only valid for its corresponding semi-statically transmitted data. For example, in fig. 4, the first DCI X is valid only for data transmitted on D00-D03, and the receiving end decodes data received on D00-D03 according to the DCI X before D00. Likewise, the second DCI X is only valid for data transmitted on D10-D13, so the receiving end decodes the data received on D10-D13 according to the DCI X before D10.
For example, the information about the modulation scheme and/or the coding scheme of the semi-static transmission may be information about an MCS, for example, an order of the MCS.
In the embodiment of the present application, alternatively, the first SS is active during the activation of the semi-static transmission, and it may also be considered that the receiving end monitors the control channel candidates of the first SS during the activation of the semi-static transmission, or that the first SS is activated along with the activation of the semi-static transmission.
Illustratively, as an implementation manner, the receiving end receives a first activation signaling from the transmitting end, where the first activation signaling is used to activate the semi-static transmission. The receiving end monitors control channel candidates of the first SS while or after the semi-static transmission is activated, thereby receiving the first control channel.
Or, as another implementation, the receiving end receives a first activation signaling from the transmitting end, where the first activation signaling is used to activate the semi-static transmission. The receiving end also receives a second activation signaling from the transmitting end, and the second activation signaling is used for activating the first SS. That is, the semi-static transmission and the first SS may be activated by different activation signaling, which is not limited.
Illustratively, the first activation signaling and the second activation signaling may be DCI or RRC signaling, etc.
Illustratively, the deactivation signaling may be DCI or RRC signaling, etc.
Or, as another implementation manner, the configuration information is used to activate the semi-static transmission, and the first SS is activated along with the activation of the semi-static transmission;
or, the configuration information is used for activating the first SS, and the semi-static transmission is activated along with the activation of the first SS;
or, the configuration information is used to activate the semi-static transmission and the first SS.
Optionally, in an implementation, the activation period of the semi-static transmission may refer to a time range or a time interval from a time when activation signaling for activating the semi-static transmission is received to a time when deactivation signaling for deactivating the semi-static transmission is received.
It should be appreciated that, as described above, in one implementation, the configuration information may be used to activate the semi-static transmission. In this case, the activation period refers to a time interval from a time when the receiving end receives the configuration information (e.g., step 210 in fig. 2) to a time when the receiving end receives the deactivation signaling (e.g., step 260 in fig. 2).
Further, the receiving end stops monitoring the control channel candidates of the first SS after receiving the deactivation signaling.
In addition, in the present application, the monitoring period of the first SS is greater than or equal to the period of the semi-static transmission.
Illustratively, the monitoring period of the first SS may be a positive integer multiple of the period of the semi-static transmission.
For example, if the monitoring period of the first SS is equal to the period of the semi-static transmission, the information of the modulation scheme and/or the coding scheme indicated by the first control channel is valid for the semi-static transmission data of one period.
When the monitoring period of the first SS is equal to the period of the semi-static transmission, the receiving end receives the first control channel relatively frequently by monitoring the control channel candidates of the first SS, and the information (e.g., information of MCS) of the modulation scheme and/or the coding scheme of the semi-static transmission indicated by the first control channel can adapt to the change of the channel state more flexibly, which is beneficial to improving the reliability of the semi-static transmission.
For another example, if the monitoring period of the first SS is longer than the period of the semi-static transmission, the information of the modulation scheme and/or the coding scheme indicated by the first control channel is valid for the semi-static transmission data of a plurality of periods. For example, if the monitoring period of the first SS is equal to 2 times the period of the semi-static transmission, the information of the modulation scheme and/or the coding scheme indicated by the first control channel is valid for 2 periods of the semi-static transmission data.
When the monitoring period of the first SS is longer than the semi-static transmission period, the receiving end can acquire information of the modulation mode and/or the coding mode of data in a plurality of subsequent semi-static transmission periods within the monitoring period of the first SS, so that the frequency of detecting a control channel at the receiving end can be reduced, and the power consumption of the terminal equipment can be reduced.
In addition, the monitoring time of the first SS is located in the same time slot as the first time, where the first time slot is a transmission time of the semi-static transmission after and closest to the monitoring time of the first SS.
Alternatively, the time interval between the monitoring time of the first SS and the first time is sufficiently small or close. For example, the time interval between the monitoring time of the first SS and the first time is less than a threshold. Alternatively, the threshold is equal to one time slot, or two time slots, etc.
Optionally, the monitoring period of the first SS may be configured independently of the period of the configuration information, and the configuration information is SPS configuration, for example, the SPS configuration includes searchSpace id, the searchSpace id corresponds to a searchSpace configured by the sending end, and the searchSpace may have its period. Wherein, the period of the searchSpace can be configured by the field monitorringslotperiodicityandoffset. Or,
the monitoring period of the first SS may be configured together with the period of the configuration information, which is, for example, an SPS configuration, such as a period of an SS (for example, a USS in particular) included in the SPS configuration, and the period of the SS may be configured through a field monitoring slot periodicity and offset, or a parameter set of the SS is not configured, and the period of the SS defaults to the period of the SPS configuration. For another example, the SPS configuration includes searchSpaceId, where a parameter SSperiod is added to a parameter set of searchSpaceId, and the period of the SS is configured through the SSperiod. Therefore, the configuration of the monitoring period of the first SS depends on the specific implementation of the transmitting end, and is not limited.
In addition, the configuration information is used for configuring the first SS associated with the semi-static transmission, and may be an index of the first SS indicated by the configuration information. Or, the configuration information includes a configuration parameter set of the first SS, where the configuration parameter set may include one or more configuration parameters of the first SS.
Further, after step 230, steps 240-250 may also be included.
240. The receiving end receives the first data after receiving the first control channel.
Wherein the first data is scheduled by the semi-static transmission. Alternatively, the first data is data of said semi-static transmission after a reception time instant of the first control channel.
Here, the receiving end may receive the first data after the received symbol of the first control channel, where the receiving time of the first control channel and the receiving time of the first data may be located in the same slot (slot), frame (frame), and the like, which is not limited.
As can be seen from step 210 above, the first control channel indicates information of a modulation scheme and/or a coding scheme of the semi-static transmission, and specifically, the first control channel indicates information of a modulation scheme and/or a coding scheme of the first data.
250. And the receiving end decodes the first data according to the information of the modulation mode and/or the coding mode indicated by the first control channel.
In the foregoing implementation, the first control channel indicates information of a modulation scheme and/or a coding scheme of the semi-static transmission. Optionally, the first control channel includes first indication information, where the first indication information is used to indicate information of a modulation scheme and/or a coding scheme of the semi-static transmission.
Optionally, method 200 may also include steps 260-270.
260. And the sending end sends a deactivation signaling, and the deactivation signaling is used for deactivating the semi-static transmission.
The receiving end receives the deactivation signaling from the transmitting end.
270. The receiving end stops monitoring the control channel candidates of the first SS.
It is understood that the first SS is active during the activation of the semi-static transmission, and thus, the receiving end will stop monitoring the control channel candidates of the first SS after deactivating the semi-static transmission.
Or, in another implementation manner, in step S260, the deactivation signaling may also be release signaling, where the deactivation signaling and the release signaling may be different types of signaling, and the receiving end stops monitoring the control channel candidate of the first SS after receiving the release signaling. Wherein the release signaling is used to release the semi-static transmission. Optionally, the release signaling may be RRC signaling or other kinds of signaling, without limitation. Or, in another implementation manner, the deactivation signaling and the release signaling in step S260 may be the same type of signaling, the sending end sends the deactivation signaling/release signaling, and the terminal device stops monitoring the control channel candidate of the first SS after receiving the deactivation signaling/release signaling.
Exemplarily, the first control channel includes first indication information, and the first indication information is specifically used for indicating information of the semi-statically transmitted MCS, as shown in table 1.
TABLE 1
| MCS | 5bits |
It should be understood that, in table 1, the information indicating the semi-statically transmitted MCS using 5 bits is only an example, and there may be more or less bits, which is not limited.
In the present application, the control information included in the first control channel may be as DCI X described above, and only information indicating a modulation scheme and/or a coding scheme of the semi-static transmission may be included in DCI X. Compared with the DCI containing a lot of information in the prior art, the DCI X in the present application may be a new DCI format, and the number of bits contained in the DCI X may be less (for example, light-weight DCI), so that signaling overhead is saved.
In addition, compared with the prior art that the receiving end blindly detects the DCI for reactivation in each semi-static transmission, the method and the device for detecting the DCI can also reduce the complexity and power consumption of the blind detection of the receiving end.
It should be understood that the method 200 in fig. 2 above describes an application of the semi-persistent scheduling method provided in the present application in downlink transmission, and as described above, the technical solution of the present application may also be applied in uplink transmission and sidelink transmission.
For example, when the semi-persistent scheduling method provided in the present application is applied to uplink transmission, the process shown in fig. 5 may be performed by taking CG transmission of type1 as an example.
Referring to fig. 5, fig. 5 is an example of applying the semi-persistent scheduling method provided in the present application to uplink transmission.
It should be understood that in the above transmission, although the semi-static transmission data is sent by the terminal device to the network device, the semi-static transmission is also scheduled by the network device. Therefore, in uplink transmission, the first control channel may specifically be a Physical Downlink Control Channel (PDCCH), and the control information in the first control channel may be Downlink Control Information (DCI).
310. The network equipment sends the configuration information, and the terminal equipment receives the configuration information from the sending end.
Wherein the configuration information is used to configure a first SS associated with semi-static transmission, the first SS being active during activation of the semi-static transmission.
Illustratively, step 310 may be implemented by RRC signaling.
320. The network equipment sends a first control channel, and the terminal equipment receives the first control channel.
And the first control channel is obtained by monitoring the control channel candidate of the first SS after the terminal equipment receives the activation signaling. The first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission.
330. The terminal equipment sends first data, and the network equipment receives the first data.
Wherein the first data is the semi-statically transmitted data. The first data is modulated and/or coded by adopting a modulation mode and/or a coding mode indicated by the first control channel.
340. And the network equipment decodes the first data by adopting the information of the modulation mode and/or the coding mode indicated by the first control channel.
Optionally, the flow of FIG. 5 may also include steps 350-360.
350. And the terminal equipment receives RRC signaling from the network equipment, wherein the RRC signaling is used for releasing the semi-static transmission. Or, the RRC signaling is used to instruct the terminal device to stop the semi-static transmission.
360. The terminal device stops monitoring the control channel candidates of the first SS.
Alternatively, other ways of releasing the semi-static transmission may also be adopted in fig. 5, without limitation.
Taking type2 of CG transmission as an example, the flow can be as shown in fig. 6.
Referring to fig. 6, fig. 6 is another example of applying the semi-persistent scheduling method provided in the present application to uplink transmission.
410. The network equipment sends the configuration information, and the terminal equipment receives the configuration information from the sending end.
Wherein the configuration information is used to configure a first SS associated with semi-static transmission, the first SS being active during activation of the semi-static transmission.
Illustratively, step 410 may be implemented by RRC signaling.
420. The network equipment sends the activation signaling, and the terminal equipment receives the activation signaling from the network equipment. Wherein the activation signaling is used to activate the semi-static transmission.
Illustratively, step 410 may be implemented by DCI signaling.
430. The network equipment sends a first control channel, and the terminal equipment receives the first control channel.
And the first control channel is obtained by monitoring the control channel candidate of the first SS after the terminal equipment receives the activation signaling. The first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission.
440. The terminal equipment sends first data, and the network equipment receives the first data.
And the first data is coded by adopting a modulation mode and/or a coding mode indicated by the first control channel.
450. And the network equipment decodes the first data by adopting the information of the modulation mode and/or the coding mode indicated by the first control channel.
Optionally, the flow of FIG. 6 may also include steps 460-470.
460. The network equipment sends deactivation signaling, and the deactivation signaling is used for deactivating the semi-static transmission.
470. The terminal equipment stops monitoring the control channel candidate of the first SS after receiving the deactivation signaling.
Or, in another implementation manner, in step S460, the deactivation signaling may also be release signaling, where the deactivation signaling and the release signaling may be different types of signaling, and the terminal device stops monitoring the control channel candidate of the first SS after receiving the release signaling. Wherein the release signaling is used to release the semi-static transmission. Optionally, the release signaling may be RRC signaling or other kinds of signaling, without limitation.
Or, in another implementation manner, the deactivation signaling and the release signaling in step S460 may be the same type of signaling, the sending end sends the deactivation signaling/release signaling, and the terminal device stops monitoring the control channel candidate of the first SS after receiving the deactivation signaling/release signaling.
For another example, the method of semi-persistent scheduling provided by the present application is applied to sidelink (sidelink) transmission. Specifically, the semi-static transmission of the sidelink transmission may include a CG transmission and an SPS transmission, and the CG transmission and the SPS transmission may refer to the descriptions of the uplink transmission (i.e., CG transmission) and the downlink transmission (i.e., SPS transmission) described above, and will not be described in detail here.
Optionally, in the sidelink transmission, the first control channel may specifically be a Physical Sidelink Control Channel (PSCCH), and the control information in the first control channel may be Sidelink Control Information (SCI).
It can be seen that, in the present application, by associating the semi-static transmission with one SS (i.e., the first SS herein), it is possible to flexibly indicate a change in configuration parameters of the semi-static transmission according to a change in channel status, thereby reducing the indication overhead.
In addition, considering that some service frames (for example, XR video service frames) are different in size, a situation that a semi-statically configured time-frequency resource is not enough to carry one service frame may occur, or when a receiving end has data of multiple services, the semi-statically configured time-frequency resource is not enough to simultaneously send the data of the multiple services to the receiving end, the application provides a further solution for the situations.
Assuming that the first data described above is partial data of one traffic frame, the remaining data of the traffic frame will be referred to as second data hereinafter for convenience of description. Alternatively, it is assumed that the first data is data of a certain service, and data of another service is hereinafter also referred to as second data.
In summary, it is proposed in the present application to transmit second data by means of dynamic scheduling and to indicate, via a first control channel, whether or not to blindly detect a control channel for scheduling the second data after receiving first data (hereinafter referred to as a second control channel).
Thus, in this further aspect, the first control channel may be further configured to indicate whether to blindly detect the second control channel at a second time instant in addition to the information indicating the modulation scheme and/or the coding scheme of the semi-static transmission as described above, wherein the second control channel is configured to schedule the second data, and the second time instant is later than the monitoring time instant of the first control channel.
Here, the specific form of the second data is not limited.
For example, the second data may belong to the same service as the first data, or the second data is data of a service different from the service to which the first data belongs at the receiving end.
Alternatively, the first data may be partial data of an extended reality (XR) service frame, and the second data may be the remaining data of the XR service frame.
Or the first data is data of an XR service, and the second data is data of other services.
In one implementation, the first control channel further includes second indication information, where the second indication information is used to indicate whether to blind detect the second control channel at the second time. In other words, the second indication information is used to indicate whether the receiving end needs to continue blind detection of the second control channel after receiving the first data. Alternatively, the second indication information is used to indicate whether blind inspection is continued after the first data is received.
Exemplarily, the second indication information may be represented as "PDCCH monitoring", i.e. PDCCH monitoring, in the following behavior example.
In combination with the above scheme that the first control channel includes the first indication information, in this case, the first control channel may include the first indication information and the second indication information as shown in table 2.
TABLE 2
| MCS | 5bits |
| PDCCH monitoring | 1bit |
It should be understood that, in table 2, MCS represents first indication information and PDCCH monitoring represents second indication information.
Illustratively, PDCCH monitoring employs 1 bit to indicate whether the receiving end continues blind detection after receiving the first data.
Fig. 7 shows a schematic diagram of the first control channel including the second indication information. As shown in fig. 7, if PDCCH monitoring = '0', it means that the receiving end does not need to continue blind detection after receiving the first data. If PDCCH monitoring = '1', it indicates that the receiving end needs to perform blind detection on the second control channel after receiving the first data, where a time range of the blind detection on the second control channel is autonomously implemented by the receiving end.
It should be understood that only the second indication information included in the first control channel is labeled in fig. 7, and the first indication information is also included in the first control channel, which is not shown in fig. 5.
It should be noted that, since the receiving end may have multiple services, the multiple services include other services besides the service to which the first data belongs. If the PDCCH monitoring = '0', it means that the receiving end does not need to perform blind detection continuously after receiving the first data, which may mean that the receiving end does not need to perform blind detection continuously for the XR service. However, it is not mandatory that the receiving end does not blindly detect control information of other services. In other words, even if PDCCH monitoring = '0', the receiving end may perform blind detection for other traffic.
On the basis of the above table 2, the present application also provides another implementation manner in which the sending end indicates whether the receiving end continues to perform blind inspection after the first data.
Optionally, the first PDCCH is further configured to indicate a blind detection of a second control channel, and a time range of the blind detection of the second control channel, where the second control channel is used for scheduling the second data.
It can be understood that, in table 2 above, the second indication information in the first control channel is used to indicate whether the receiving end continues blind detection after receiving the first data, and if blind detection occurs, the time range of blind detection may be autonomously determined by the receiving end. In this implementation, the first control channel may include third indication information, where the third indication information is used to indicate the receiving end to blindly detect the second control channel, and meanwhile, the third indication information also indicates a time range for blindly detecting the second control channel. Continuing with the following behavior example, the third indication information may be PDCCH monitoring using 3 bits, which is distinguished from the second indication information using 1 bit in table 2. At this time, the first indication information and the third indication information may be included in the first control channel, as shown in table 3.
TABLE 3
| MCS | 5bits |
| PDCCH monitoring | 3bits |
In table 3, MCS indicates first indication information, and PDCCH monitoring indicates third indication information.
It can be seen that, unlike in table 2, PDCCH monitoring uses 3 bits to indicate to the receiving end to blindly detect the second control channel.
Fig. 8 illustrates a diagram that the first control channel includes the third indication information. As shown in fig. 8, for example, if PDCCH monitoring = '010', it indicates that the receiving end blindly detects the second PDCCH after receiving the first data, and meanwhile, the PDCCH monitoring also indicates that the receiving end blindly detects at least 2 data transmission units after the last data transmission unit in the first data, as shown in fig. 8, the receiving end blindly detects at least 2 subsequent data transmission units after receiving the data of D00-D03. For another example, if PDCCH monitoring = '011', it indicates that the receiving end blindly detects the second PDCCH after receiving the first data, and meanwhile, the PDCCH monitoring also indicates that the receiving end blindly detects at least 3 data transmission units after the last data transmission unit in the first data. If PDCCH monitoring = '000', it means that the receiving end does not perform blind detection after receiving the first data, as in fig. 8, the receiving end needs to perform blind detection on at least 0 data transmission units after receiving the data of D10 to D13, that is, does not perform blind detection. As can be seen, the value of PDCCH monitoring indicates the time range for the receiving end to blindly detect the second PDCCH. In other words, the non-zero value of PDCCH monitoring indicates that the receiving end needs to continue blind detection after receiving the first data, and the non-zero value indicates the time range for blind detection of the second PDCCH. Alternatively, the time range may be represented by the number of data transmission units, or may be in other manners, for example, the time range may also be a range of a certain timeslot type (for example, only considering the downlink timeslot), and is not limited. And when the PDCCH monitoring value is zero, indicating that the receiving end does not perform blind detection after receiving the first data. Alternatively, the 1 data transmission unit here may be 1 slot, 1 millisecond, etc., without limitation.
Similarly, the PDCCH monitoring in table 3 uses 3 bits only as an example, and specifically, the number of bits used for PDCCH monitoring may be designed according to a time range in which the receiving end needs to blindly detect the second PDCCH. For example, if the receiving end detects 4 data transmission units after the first data in a blind manner at most, the PDCCH monitoring may also use 2 bits to meet the requirement. Or, if the time range for the receiving end to blindly detect the second PDCCH exceeds 8 data transmissions at most, the PDCCH monitoring needs to use more than 3 bits (e.g., 4 bits or 5 bits, etc.) to meet the requirement.
Still further, the third indication information included in the first control channel may not only indicate the time range for blind detection of the second control channel, but also indicate an offset of the second time (i.e., the time for blind detection of the second control channel) with respect to the first data by adding a fourth indication information. For example, the fourth indication information is used to indicate an offset of the second time instant with respect to a first data transmission unit of the first data, or an offset of the second time instant with respect to a last data transmission unit of the first data. Alternatively, the fourth indication information may be used to indicate an offset of the second time from the first time, an offset from the monitoring time, or the like, and is not limited to this
At this time, the first control channel may include first indication information, third indication information, and fourth indication information. Wherein, the information contained in the first control channel may be as shown in table 4.
TABLE 4
| MCS | 5bits |
| PDCCH monitoring | 3bits |
| k | 2bits |
It should be understood that in table 4, "k" represents the above fourth indication information. In addition, the use of 2 bits for k is merely an example.
For example, assuming that k is used to indicate an offset of the second time with respect to the last data transmission unit of the first data, if k = '1', it indicates that the receiving end has a position offset by 1 data transmission unit at the last data transmission unit of the first data, and the second PDCCH is blindly detected. Meanwhile, if the third indication information, that is, PDCCH monitoring = '010', the receiving end may learn to blindly detect 2 data transmission units.
Alternatively, the third indication information in table 4 may also be replaced by the second indication information, as shown in table 5.
TABLE 5
| MCS | 5bits |
| PDCCH monitoring | 1bit |
| k | 2bits |
In this implementation shown in table 5, the first indication information in the first control channel indicates information of the semi-statically transmitted MCS, and the second indication information (i.e., 1-bit PDCCH monitoring) indicates whether to continue blind detection after receiving the first data. If the second indication information = '0', it indicates that the receiving end does not need blind detection after receiving the first data, and at this time, the value of the fourth indication information (i.e., k) is regarded as invalid, and the receiving end may ignore and not process the value. Alternatively, the receiving end may not process or parse the field of the fourth indication information after parsing the second indication information = '0'. If the second indication information = '1', the receiving end is instructed to continue blind detection after receiving the first data, and at this time, the value of the fourth indication information represents a valid offset value.
In the above embodiment, it is described how the receiving end knows whether to continue to blindly detect the second control channel after receiving the first data according to the indication of the first control channel.
Another implementation of indicating whether the receiving end continues to blindly detect the second control channel after receiving the first data is also provided in the present application.
In this implementation, the configuration information is used to configure a first SS associated with semi-static transmission, and at the same time, the semi-static transmission is also associated with a second SS, where a second control channel belongs to the second SS. In other words, the second control channel is optionally obtained by monitoring the control channel candidates of the second SS, where the second control channel may be the second control channel in any of the above-mentioned implementations.
In other words, the configuration information is used to configure a semi-static transmission that associates a first SS and a second SS. The receiving end monitors the control channel candidate of the first SS, receives the first control channel, and obtains the information of the modulation mode and/or the coding mode of the semi-static transmitted first data indicated by the first control channel. The receiving end monitors the control channel candidate of the second SS, receives the second control channel, and obtains control information of the dynamically scheduled second data, for example, information of a modulation scheme and/or a coding scheme of the second data.
For example, in this implementation, the information contained in the first control channel may be the first control channel example in any of the embodiments described above, for example, as designed in any of tables 1 to 5. The control information in the second control channel may multiplex an existing DCI format. It should be understood that the existing DCI formats referred to herein are distinguished from DCI X designed in the present application.
The above details the scheme of how to indicate the information of the modulation scheme and/or coding scheme (e.g., information of MCS) of the semi-persistent scheduling transmission.
Based on the same design concept, the application also provides a scheme for indicating a hybrid automatic repeat request (HARQ) process in semi-persistent scheduling transmission, which can solve the problem of HARQ process collision in the existing semi-persistent transmission.
It is to be understood that the information indicating the modulation and/or coding scheme of the semi-persistent transmission or the information indicating the HARQ process in the semi-persistent transmission actually indicates some configuration parameters in the semi-persistent scheduling transmission.
In order to facilitate understanding of the scheme of indicating a semi-static HARQ process in the following, a description will be given of some scenarios and related techniques for generating HARQ process collisions.
During the air interface transmission, a transmission bit error or a packet loss may occur. In order to ensure robustness of over-the-air transmission, a hybrid automatic repeat request (HARQ) mechanism is widely adopted in 3 GPP. HARQ is a retransmission mechanism combining Forward Error Correction (FEC) and automatic repeat-reQuest (ARQ). FEC and ARQ are well known in the communication field, and will not be described in detail herein. The greatest advantage of HARQ over ARQ is that HARQ supports soft combining techniques. In NR, a soft combining scheme is divided into chase combining (cc) and Incremental Redundancy (IR) according to whether retransmitted bit information is the same as information bits originally transmitted. Specifically, the retransmitted bit information in CC is the same as that of the initial transmission, and the retransmitted bit information in IR may be different from that of the initial transmission.
As is known, in the existing communication protocol, the HARQ process employs a stop wait protocol (stop wait protocol). The stop-and-wait protocol means that the sending end stops sending every time the sending end finishes sending one TB and waits for the confirmation of the receiving end. The next TB is sent after the acknowledgement is received.
Fig. 9 is a HARQ process under the incremental redundancy scheme. As shown in fig. 9, the sending end sends TB0 RV0 to the receiving end, and the receiving end decodes TB0 RV0 and feeds back an Acknowledgement (ACK) according to the CRC result to indicate that the decoding is successful, or feeds back a negative-acknowledgement (NACK) to indicate that the decoding is failed. And if the sending end receives the ACK, sending RV0 data of the TB1, and if the sending end receives the NACK, sending the RV1 data of the TB 0. It should be noted that, in the CC scheme, there is no concept of RV, so each retransmission is data that is initially transmitted, for example, the transmitting end transmits TB0, and after the receiving end fails to decode and returns NACK, the transmitting end transmits TB0 to the receiving end again, where TB0 is consistent with TB0 that is initially transmitted.
In a New Radio (NR) system, a base station needs to receive HARQ information sent by a UE and needs to know when the UE sends the HARQ information. The base station controls the transmission timing through the HARQ feedback timing field K1 of the DCI. The HARQ feedback timing field K1 indicates a slot offset value between a Physical Downlink Shared Channel (PDSCH) and HARQ information transmitted by the UE. Specifically, if the UE receives the PDSCH in slot n, the UE transmits corresponding HARQ information in slot (n + K1), where the HARQ information is carried by a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).
If the TB corresponding to one HARQ process is not correctly received, the HARQ process is used to transmit the TB, specifically, the CC or IR, until the TB is correctly received or the maximum number of retransmissions is reached. Therefore, in order to guarantee multi-traffic transmission, the base station may configure a maximum of 16 HARQ processes for each UE, which operates as shown in fig. 10 below.
Fig. 10 is a process diagram of data transmission using multiple HARQ processes. As in fig. 10, the ue employs 3 HARQ processes. Wherein, HARQ processes 0-2 correspond to TB 0-TB 2, respectively. If the TB0 is decoded incorrectly, the receiving end feeds back NACK to the transmitting end, and if the TB1 and the TB2 are decoded correctly, the receiving end feeds back ACK to the transmitting end. The specific flow of each HARQ process may refer to fig. 9. Because of the TB0 decoding error for HARQ process 0 transmission, HARQ process 0 will continue to be used for retransmission of TB0, while HARQ process 1 and HARQ process 2 may be used for transmission of new data, e.g., HARQ process 1 for transmission of TB3 and HARQ process 2 for transmission of TB4. Likewise, if HARQ process 2 corresponds to a TB4 decoding error while TB0 and TB3 are decoding correctly, HARQ process 0 and HARQ process 1 may be used for new data transmission, e.g., HARQ process 0 is used for transmission of TB5, HARQ process 1 is used for transmission of TB6, and HARQ process 2 continues for transmission of TB4.
It can be seen that if a decoding error occurs in the data of a certain HARQ process all the time, the HARQ process will be occupied all the time, and the initial transmission of new data is affected.
In CG transmission and SPS transmission (already introduced in the beginning of this document) of 3GPP, the problem that a HARQ process is always occupied due to data transmission error on the HARQ process and new data transmission is affected also exists.
For example, taking downlink SPS transmission as an example, each SPS transmission opportunity is only used for transmitting new data according to the existing protocol, and if data decoding errors occur, the base station needs to retransmit the PDCCH scrambled by SPS-C-RNTI (e.g., in LTE) or CS-RNTI (e.g., in NR) on the same HARQ process by adopting a dynamic scheduling manner. Therefore, it may also happen that a certain HARQ process is always occupied.
Some existing schemes propose to alleviate the problem of some HARQ processes being always occupied affecting the initial transmission of new data by allocating multiple HARQ processes to SPS transmissions, as shown in fig. 11 below.
Fig. 11 is a diagram of allocating multiple HARQ processes for SPS transmissions. As shown in fig. 11, for example, the subcarrier spacing is 15khz, and the period of SPS transmission is 10ms, it is assumed that one SPS transmission opportunity can schedule 6 slots. To avoid the above problem, multiple HARQ processes may be configured for the TB of an SPS transmission. One possible way is: the first SPS transmission occupies HARQ processes 0-5, the second occupies HARQ processes 6-11, the third occupies HARQ processes 0-5, the fourth occupies HARQ processes 6-11, and so on. In the existing scheme, it is expected that the HARQ process is occupied by the retransmission due to the first SPS transmission error in the allocation manner of the HARQ process shown in fig. 11, so that the initial transmission and the retransmission HARQ process collide with each other.
However, the scheme in fig. 11 may still have a problem that the initial transmission and the retransmission need to occupy the same HARQ process, which is described below with reference to fig. 12.
Fig. 12 is a diagram of a scenario for generating a HARQ process collision. In fig. 12, the TB transmission error in the slot D00 corresponding to HARQ process 0 continues to retransmit the TB in the slot D16 by using HARQ process 0 through dynamic scheduling. If the TB continues to transmit errors at slot D16, HARQ process 0 will continue to be occupied. And HARQ process 0 should be used for the initial transmission of new data for another SPS transmission opportunity at time slot D20. As specified by the existing protocol, the SPS transmit opportunity will directly occupy HARQ process 0 for the initial transmission of new data for slot D20, regardless of whether the data for the previous slot D00 has still not been correctly received. In this case, not only the data of the time slot D00 cannot be correctly received, but also the resources of the time slots D00 and D16 are wasted. In addition, if the retransmission data of the slot D16 appears in the slot D26 and the same HARQ process 0 is adopted, the UE may consider that the data transmitted by the slot D26 is the retransmission of the slot D20, which may cause the data decoding to be fuzzy, thereby affecting the decoding of the data of the slot D20.
In addition, similar problems occur between dynamically scheduled data and HARQ processes employed for SPS transmitted data, which will be described below with reference to fig. 13.
Fig. 13 is another diagram of a scenario for generating HARQ process collisions. As shown in fig. 13, for the following SPS transmission as an example, it is assumed that at time slot D27, the base station employs HARQ process 0 for dynamically scheduled transmission, but UE-side decoding has errors. The base station continues to retransmit on slot D35 using HARQ process 0, but the UE still does not receive correctly. If at this time, the data of the SPS transmission of the time slot D40 needs to be transmitted by using HARQ process 0, according to the current protocol, HARQ process 0 will be cleared and directly used for receiving the data of the SPS transmission of the time slot D40.
It can be seen that this scenario also leads to the above-mentioned problems: on the one hand, the resources of the time slots D27 and D35 are wasted; on the other hand, the data retransmitted in slot D27 and slot D35 at slot D46 can still adopt HARQ process 0, but since slot D46 is dynamically scheduled data, the data of HARQ process 0 is refreshed, which affects the data decoding at slot D40, causes decoding ambiguity, and affects the accuracy of data decoding at slot D40.
According to the existing protocol, the number of configured HARQ processes per UE is 16 at most, and one scheme is to increase the upper limit of HARQ processes, for example, the number of configured HARQ processes per UE is increased to 32 or more. However, the capability of the UE may not be able to support so many HARQ processes. Meanwhile, an increase in the number of HARQ processes may cause a change in related configuration (e.g., DCI size). In practice, these factors make the solution difficult to implement.
Therefore, the following technical solutions are provided in the present application to solve the problem of HARQ process collision in the above scenario.
Referring to fig. 14, fig. 14 is a diagram illustrating another semi-persistent scheduling method provided by the present application. The method 700 of fig. 14 is based on a general design concept with corresponding specific features as the method 200 of fig. 2, and the method 700 is described below.
710. The receiving end receives configuration information, and the configuration information is used for configuring a first SS related to semi-static transmission.
720. And the sending end sends an activation signaling, and the activation signaling is used for activating the semi-static transmission.
730. The receiving end receives a first control channel, wherein the first control channel belongs to a first SS.
Specifically, after receiving the activation signaling, the receiving end monitors the control channel candidates of the first SS to obtain the first control channel.
And the first control channel indicates the information of M HARQ processes corresponding to the M data transmission units scheduled by the semi-static transmission, wherein M is an integer greater than 1.
In an implementation manner, the first control channel includes fifth indication information, where the fifth indication information indicates information of M HARQ processes corresponding to the M data transmission units scheduled by the semi-persistent transmission.
Illustratively, the information of the M HARQ processes may be M HARQ process numbers.
In this example, the information included in the first control channel may be as shown in table 6.
TABLE 6
| |
|
| HARQ process | |
| 1 | |
| HARQ process | |
| 2 | |
| HARQ process | |
| 3 | 4bits |
It should be understood that harqprocesses 0-3 shown in table 6 as a whole are referred to as the fifth indicating information.
It can be seen that, in table 6, the fifth indication information indicates the process numbers of 4 HARQ processes, which has been described above, and is designed based on that a receiving end specified by the existing protocol can be allocated with 16 HARQ processes at most, so that each HARQ process can be indicated by using log2 (16) =4 bits.
Referring to fig. 15, the sps transmission is configured with 8 HARQ processes, and fig. 15 is a schematic diagram of a HARQ process indicating semi-static transmission provided in the present application. As shown in fig. 13, taking downlink SPS transmission as an example, 4 slots are scheduled for one SPS transmission opportunity. The first SPS transmission opportunity schedules 4 time slots D00-D03, and the second SPS transmission opportunity schedules 4 time slots D10-D13. In the first SPS transmission opportunity, the UE feeds back NACK information to the base station in the uplink time slot U00, where the data decoding in the time slot D02 corresponding to the HARQ process 2 is incorrect. The base station dynamically schedules to continue retransmitting the data on time slot D02 using HARQ process 2 on time slot D15. Assuming that the retransmission of slot 15 continues to be in error, the UE feeds back NACK information to the base station in uplink slot U10. Because the data in slot D02 corresponding to HARQ process 2 has not been correctly received, HARQ process 2 continues to be occupied. And according to the semi-persistent configuration, 4 slots D20-D23 are scheduled for the third SPS transmission opportunity, where HARQ process 2 should be used for the initial transmission of new data on slot D22. In order to avoid forcing HARQ process 2 to be used for the initial transmission of new data on time slot D22 according to the provisions in the existing protocol, resulting in resource waste of time slots D02 and D15, and causing decoding ambiguity of the receiving end on time slot D22, in the present application, based on NACK information on U01, in the first PDCCH before the third SPS transmission opportunity, 4 HARQ processes that should be used by 4 time slots D20-D23 indicating the invocation of the third SPS transmission opportunity are HARQ process 0, HARQ process 1, HARQ process 4, and HARQ process 3. It can be seen that HARQ process 2 occupied by the retransmission of data on slot D02 will not be used in the third SPS transmission opportunity, thereby avoiding collision of HARQ process 2. In addition, the ambiguity of data decoding on the time slot D22 at the receiving end is avoided, and the data decoding correctness in the existing scheme is improved.
Optionally, in order to reduce the indication overhead, in a specific implementation, fifth indication information is used to indicate offset information of M HARQ processes corresponding to the M data transmission units, where the offset information of a HARQ process corresponding to a jth data transmission unit in the M data transmission units indicates an offset of a HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling opportunity relative to a HARQ process number adopted by the jth data transmission unit configured by the configuration information in the current semi-persistent scheduling transmission opportunity, where j is greater than or equal to 1 and less than or equal to M, and j is an integer. In this implementation, the indication information contained in the first control channel may be as shown in table 7.
TABLE 7
As can be seen, if it is assumed that M data transmission units are scheduled by semi-persistent scheduling transmission at one time, the fifth indication information indicates M offset information, where each offset information is used to determine an HARQ process that should be used by one data transmission unit of the M data transmission units in the semi-persistent scheduling transmission.
In addition, in the case of Table 7,
indicating the number of TBs contained in the SPS transmissions associated with the SS,
for the round-up operation, TB is an example of a data transmission unit.
The following description is made with reference to fig. 16.
Referring to fig. 16, fig. 16 is another diagram of a HARQ process indicating semi-static transmission in the present application. It should be noted that fig. 16 is a modification of the scheme of fig. 15, and the description of the same parts is omitted. In the scheme in fig. 15, in the configuration information corresponding to the third SPS transmission opportunity, the HARQ process numbers of the 4 time slots D20 to D23 that indicate the scheduling of the third SPS transmission opportunity are sequentially 0,1,4,3, while in fig. 16, in order to reduce the indication overhead, the HARQ process numbers adopted in the current SPS transmission opportunity by the 4 time slots D20 to D23 that indicate the scheduling of the third SPS transmission opportunity in the configuration information corresponding to the third SPS transmission opportunity are offset information with respect to the HARQ process numbers adopted in the current SPS transmission opportunity by the 4 time slots D20 to D23 that are semi-statically configured.
For example, 8 HARQ processes are configured for one SPS transmission, according to the semi-static configuration, the slot D20 employs HARQ process 0 in the third SPS transmission opportunity, and the fifth indication information indicates that the slot D20 also employs HARQ process 0 in the third SPS transmission opportunity, which shows that the offset value of the two HARQ processes is 0. For another example, according to the semi-persistent configuration, the time slot D21 employs HARQ process 1 in the third SPS transmission opportunity, and the fifth indication information indicates that the time slot D21 also employs HARQ process 1 in the third SPS transmission opportunity, and the offset value of the two HARQ processes is 0. However, according to the semi-persistent configuration, the time slot D22 employs HARQ process 2 in the third SPS transmission opportunity, and the fifth indication information indicates that the time slot D22 also employs HARQ process 4 in the third SPS transmission opportunity, it can be seen that the offset value of the two HARQ processes is 2. It is known that the offset value of the HARQ process corresponding to the timeslot D23 is also 0, which is not described in detail.
Further, the method 700 may further include step 740.
740. And the receiving end decodes the data received on the M data transmission units according to the information of the M HARQ processes indicated by the first control channel.
Optionally, method 700 may also include steps 750-760.
750. And the sending end sends a deactivation signaling, and the deactivation signaling is used for deactivating the semi-static transmission.
760. The terminal equipment stops monitoring the control channel candidate of the first SS after receiving the deactivation signaling.
Or, in another implementation manner, in step S750, the deactivation signaling may also be release signaling, where the deactivation signaling and the release signaling may be different types of signaling, and the terminal device stops monitoring the control channel candidate of the first SS after receiving the release signaling. Wherein the release signaling is used to release the semi-static transmission. Optionally, the release signaling may be RRC signaling or other kinds of signaling, without limitation.
Or, in another implementation manner, the deactivation signaling and the release signaling in step S750 may be the same type of signaling, the sending end sends the deactivation signaling/release signaling, and the terminal device stops monitoring the control channel candidate of the first SS after receiving the deactivation signaling/release signaling.
It can be understood that, regarding the method for indicating the HARQ process in the method 700, the same can be applied to uplink transmission or sidelink transmission, and the flows are similar, and those skilled in the art can know how to design the flows of uplink transmission or sidelink transmission according to the example of downlink transmission (the flow of the method 700), which is not described herein.
According to the technical scheme provided by the method 700, configuration information of semi-persistent scheduling transmission is associated with one SS, a receiving end obtains a first control channel by monitoring control channel candidates of the SS, the first control channel can display HARQ processes indicating M data transmission units scheduled by the semi-persistent transmission, and collision of the HARQ processes and the problems of system resource waste and decoding ambiguity introduced above caused by the collision are avoided.
It is to be appreciated that implementations of method 200 in fig. 2 may be used in conjunction with implementations of method 700 in fig. 14.
For example, combining the scheme in which the first control channel includes the first indication information in the method 200 with the scheme in which the first control channel includes the fifth indication information in the method 700, the first control channel may include the first indication information and the fifth indication information, as shown in table 8.
TABLE 8
For another example, combining the scheme in which the first control channel includes the first indication information and the second indication information in the method 200 with the scheme in which the first control channel includes the fifth indication information in the method 700, the first control channel may include the first indication information, the second indication information, and the fifth indication information, as shown in table 9.
TABLE 9
| MCS | 5bits |
| PDCCH monitoring | |
| HARQ process | |
| 0 | |
| HARQ process | |
| 1 | |
| HARQ process | |
| 2 | |
| HARQ process | |
| 3 | 4bits |
For another example, combining the scheme in which the first control channel includes the first indication information and the third indication information in the method 200 with the scheme in which the first control channel includes the fifth indication information in the method 700, the first control channel may include the first indication information, the third indication information, and the fifth indication information, as shown in table 10.
| MCS | 5bits |
| PDCCH monitoring | |
| HARQ process | |
| 0 | |
| HARQ process | |
| 1 | |
| HARQ process | |
| 2 | |
| HARQ process | |
| 3 | 4bits |
For another example, combining the scheme in which the first control channel includes the first indication information, the third indication information, and the fourth indication information in the method 200 with the scheme in which the first control channel includes the fifth indication information in the method 700, the first control channel may include the first indication information, the third indication information, the fourth indication information, and the fifth indication information, as shown in table 11.
TABLE 11
| MCS | 5bits |
| PDCCH monitoring | 3bit |
| k | |
| HARQ process | |
| 0 | |
| HARQ process | |
| 1 | |
| HARQ process | |
| 2 | |
| HARQ process | |
| 3 | 4bits |
In addition, when M HARQ process numbers are indicated in tables 8 to 11, a method of indicating offset information may also be employed, and is not listed here.
It should be understood that the above tables 6-11 using 4 bits to indicate M HARQ process numbers are designed based on that 16 HARQ processes can be configured for each UE in the existing standard. In future communication protocols, if a UE configurable HARQ process changes, the number of bits used to indicate the HARQ process number in tables 6-11 may also change (e.g., increase or decrease) accordingly, without limitation.
It can be seen that, by the method of semi-persistent scheduling in fig. 14, the HARQ process can be prevented from colliding.
Furthermore, if the method 200 of fig. 2 is combined with the method 700 of fig. 14, the indication of the configuration parameters of the semi-static transmission can be flexibly changed while avoiding collision of HARQ processes.
The method for semi-persistent scheduling provided by the present application is described in detail above, and the communication apparatus provided by the present application is described below.
Referring to fig. 17, fig. 17 is a schematic block diagram of a communication device provided herein. As in fig. 17, the communication apparatus 1000 includes a processing unit 1100, a receiving unit 1200, and a transmitting unit 1300.
Alternatively, the communication device 1000 may correspond to a receiving end in the embodiment of the present application.
In some aspects, the units of communications apparatus 1000 are configured to implement the following functions:
a receiving unit 1200, configured to receive configuration information, where the configuration information is used to configure a first search space SS associated with semi-static transmission, and the first SS is valid during activation of the semi-static transmission;
and receiving a first control channel, wherein the first control channel belongs to the first SS, and the first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission.
Optionally, in an embodiment, the processing unit 1100 is configured to monitor a control channel candidate of the first SS during the activation of the semi-static transmission, and obtain the first control channel.
Optionally, in an embodiment, the receiving unit 1200 is further configured to receive a first activation signaling, where the first activation signaling is used to activate the semi-static transmission;
and a processing unit 1100, further configured to monitor control channel candidates of the first SS while or after the semi-static transmission is activated.
Optionally, in an embodiment, the configuration information is used to activate the semi-static transmission.
Optionally, in an embodiment, the configuration information is used to configure the first SS associated with semi-static transmission, and includes:
the configuration information indicates an index of the first SS.
Optionally, in an embodiment, the receiving unit 1200 is further configured to receive first data after receiving the first control channel, where the first data is scheduled by the semi-persistent transmission;
and the processing unit 1100 is further configured to decode the first data according to the information of the modulation scheme and/or the coding scheme indicated by the first control channel.
Optionally, in an embodiment, the monitoring time of the first SS is located in the same timeslot as a first time, where the first time is a transmission time of the semi-static transmission that is after and closest to the monitoring time of the first SS.
Optionally, in an embodiment, the first control channel is further configured to indicate whether a second control channel is blindly detected at a second time, where the second control channel is used to schedule second data, and the second time is later than a monitoring time of the first control channel.
Optionally, in one embodiment, the first control channel is further used to indicate a time range for blind detection of a second control channel and blind detection of the second control channel,
wherein the second control channel is used to schedule second data.
Optionally, in an embodiment, the semi-static transmission is further associated with a second SS, and the second control channel belongs to the second SS.
Optionally, in an embodiment, the configuration information is further used to configure information of HARQ processes corresponding to the M data transmission units scheduled by the semi-persistent transmission,
and the first control channel is further configured to indicate M HARQ process numbers corresponding to the M data transmission units, where M is greater than 1 and is an integer.
Optionally, in an embodiment, the first control channel is further configured to indicate information of M HARQ processes corresponding to the M data transmission units, and includes:
the first control channel is further configured to indicate respective offset information of the M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the jth data transmission unit in the M data transmission units represents an offset of the HARQ process number corresponding to the jth data transmission unit in the semi-static scheduling transmission opportunity of this time with respect to the HARQ process number corresponding to the jth data transmission unit in the semi-static scheduling transmission opportunity of this time, which is configured by the configuration information, where j is 1 & lt j & gt or less than M, and j is an integer.
Optionally, in other aspects, each unit of the communication device 1000 has the following functions:
a receiving unit 1200, configured to receive configuration information, where the configuration information is used to configure a first search space SS associated with semi-static transmission;
and receiving a first control channel, wherein the first control channel belongs to the first SS, the first control channel indicates information of M hybrid automatic repeat request (HARQ) processes corresponding to the M data transmission units scheduled by the semi-static transmission, and M is an integer greater than 1.
Optionally, in an embodiment, the first control channel is used to indicate information of M HARQ processes corresponding to the M data transmission units, and includes:
the first control channel is used for indicating offset information of M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the jth data transmission unit in the M data transmission units represents an offset of the HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling transmission opportunity relative to the HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling transmission opportunity configured by the configuration information, where j is greater than or equal to 1 and less than or equal to M, and j is an integer.
In each of the above embodiments, receiving section 1200 and transmitting section 1300 may be integrated into one transmitting/receiving section, and have both receiving and transmitting functions, which is not limited herein.
In embodiments where the communications apparatus 1000 corresponds to a receiver, the processing unit 1100 is configured to perform processing and/or operations that are implemented internally by the receiver in addition to transmitting and receiving actions. Receiving unit 1200 is configured to perform the receiving operation, and transmitting unit 1300 is configured to perform the transmitting operation.
For example, in fig. 2, the receiving unit 1200 is configured to perform an operation of receiving the configuration information in step 210, an operation of receiving the activation signaling in step 220, an operation of receiving the first control channel in step 230, an operation of receiving the first data in step 240, and an operation of receiving the deactivation signaling in step 260. The processing unit 1100 is configured to perform the processing of step 250 and step 270.
For another example, in fig. 14, the receiving unit 1200 is configured to perform an operation of receiving the configuration information in step 710, an operation of receiving the activation signaling in step 720, an operation of receiving the first control channel in step 730, and an operation of receiving the deactivation signaling in step 750. The processing unit 1100 is configured to perform the processing of step 740 and step 760.
Alternatively, the communication apparatus 1000 may correspond to a transmitting end in this embodiment.
Optionally, in some aspects, the units of the communication apparatus 1000 are configured to implement the following functions:
a sending unit 1300, configured to send configuration information, where the configuration information is used to configure a first search space SS associated with semi-static transmission, and the first SS is valid during activation of the semi-static transmission;
and sending a first control channel, wherein the first control channel belongs to the first SS, and the first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission.
Optionally, in an embodiment, the sending unit 1300 is further configured to send a first activation signaling, where the first activation signaling is used to activate the semi-static transmission.
Optionally, in an embodiment, the sending unit 1300 is further configured to send a first deactivation signaling, where the first deactivation signaling is used to deactivate the semi-static transmission.
Optionally, in an embodiment, the configuration information is used to activate the semi-static transmission.
Optionally, in an embodiment, the sending unit 1300 is further configured to:
transmitting first data after transmitting the first control channel, the first data being scheduled by the semi-persistent transmission.
Optionally, in other aspects, each unit of the communication device 1000 has the following functions:
a sending unit 1300, configured to send configuration information, where the configuration information is used to configure a first search space SS associated with semi-static transmission;
and sending a first control channel, wherein the first control channel belongs to the first SS, the first control channel indicates information of M hybrid automatic repeat request (HARQ) processes corresponding to the M data transmission units scheduled by the semi-static transmission, and M is an integer greater than 1.
Optionally, in an embodiment, the first control channel is used to indicate information of M HARQ processes corresponding to the M data transmission units, and includes:
the first control channel is used for indicating offset information of M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the jth data transmission unit in the M data transmission units represents an offset of the HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling transmission opportunity relative to the HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling transmission opportunity configured by the configuration information, where j is greater than or equal to 1 and less than or equal to M, and j is an integer.
In the above embodiments, receiving section 1200 and transmitting section 1300 may be integrated into one transmitting/receiving section, and have both functions of receiving and transmitting, which is not limited herein.
In embodiments where communications apparatus 1000 corresponds to a transmitting end, processing unit 1100 is configured to perform processes and/or operations implemented internally by the transmitting end in addition to transmitting and receiving actions. Receiving unit 1200 is configured to perform the receiving operation, and transmitting unit 1300 is configured to perform the transmitting operation.
For example, in fig. 2, the sending unit 1300 is configured to perform an operation of sending the configuration information in step 210, an operation of sending the activation signaling in step 220, an operation of sending the first control channel in step 230, an operation of sending the first data in step 240, and an operation of sending the deactivation signaling in step 260.
For another example, in fig. 14, the sending unit 1300 is configured to perform an operation of sending the configuration information in step 710, an operation of sending the activation signaling in step 720, an operation of sending the first control channel in step 730, and an operation of sending the deactivation signaling in step 750.
Referring to fig. 18, fig. 18 is a schematic structural diagram of a communication device provided in the present application. As shown in fig. 18, the communication device 10 includes: one or more processors 11, one or more memories 12, and one or more communication interfaces 13. The processor 11 is configured to control the communication interface 13 to send and receive signals, the memory 12 is configured to store a computer program, and the processor 11 is configured to call and run the computer program from the memory 12, so that the communication apparatus 10 performs the processing performed by the transmitting end or the receiving end in the method embodiments of the present application.
For example, the processor 11 may have the functions of the processing unit 1100 shown in fig. 17, and the communication interface 13 may have the functions of the receiving unit 1200 and/or the transmitting unit 1300 shown in fig. 17. In particular, the processor 11 may be used to perform processes or operations performed internally by the communication device, and the communication interface 13 may be used to perform operations of transmission and/or reception by the communication device.
In one implementation, the communication device 10 may be a receiving end in a method embodiment. In such an implementation, the communication interface 13 may be a transceiver. The transceiver may include a receiver and/or a transmitter. Alternatively, the processor 11 may be a baseband device and the communication interface 13 may be a radio frequency device.
In another implementation, the communication device 10 may be a chip (or system of chips) mounted in a receiving end. In this implementation, the communication interface 13 may be an interface circuit or an input/output interface.
In one implementation, the communication device 10 may be a transmitting end in a method embodiment. In such an implementation, the communication interface 13 may be a transceiver. The transceiver may include a receiver and/or a transmitter. Alternatively, the processor 11 may be a baseband device and the communication interface 13 may be a radio frequency device.
In another implementation, the communication apparatus 10 may be a chip (or a system of chips) mounted in a transmitting end. In this implementation, the communication interface 13 may be an interface circuit or an input/output interface.
Wherein the dashed box behind a device (e.g., a processor, memory, or communication interface) in fig. 16 indicates that the device may be more than one.
Optionally, the memory and the processor in the foregoing device embodiments may be physically separate units, or the memory and the processor may be integrated together, which is not limited herein.
In addition, the present application also provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are executed on a computer, the operations and/or processes executed by a sending end in the method embodiments of the present application are executed.
The present application further provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are executed on a computer, the operations and/or processes executed by a receiving end in the method embodiments of the present application are executed.
Furthermore, the present application also provides a computer program product, which includes computer program code or instructions to cause the operations and/or processes performed by the sending end in the method embodiments of the present application to be performed when the computer program code or instructions are run on a computer.
The present application also provides a computer program product, which includes computer program code or instructions, when the computer program code or instructions runs on a computer, causes the operations and/or processes performed by the receiving end in the method embodiments of the present application to be performed.
In addition, the present application also provides a chip, where the chip includes a processor, and a memory for storing a computer program is provided separately from the chip, and the processor is configured to execute the computer program stored in the memory, so that a transmitting end installed with the chip performs the operations and/or processes performed by the transmitting end in any one of the method embodiments.
Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an interface circuit, or the like. Further, the chip may further include the memory.
The present application further provides a chip, where the chip includes a processor, a memory for storing a computer program is provided independently from the chip, and the processor is configured to execute the computer program stored in the memory, so that a receiving end installed with the chip performs an operation and/or a process performed by the receiving end in any one of the method embodiments.
Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an interface circuit, or the like. Further, the chip may further include the memory.
Optionally, the number of the processors may be one or more, the number of the memories may be one or more, and the number of the memories may be one or more.
Furthermore, the present application also provides a communication device (for example, a chip or a system-on-a-chip), which includes a processor and a communication interface, wherein the communication interface is configured to receive (or be referred to as input) data and/or information and transmit the received data and/or information to the processor, the processor processes the data and/or information, and the communication interface is further configured to output (or be referred to as output) the data and/or information processed by the processor, so that the operations and/or processes performed by the transmitting end in any one of the method embodiments are performed.
The present application also provides a communication device (for example, a chip or a system-on-a-chip) including a processor and a communication interface, where the communication interface is configured to receive (or referred to as input) data and/or information and transmit the received data and/or information to the processor, the processor processes the data and/or information, and the communication interface is further configured to output (or referred to as output) the data and/or information processed by the processor, so that the operation and/or processing performed by the receiving end in any one of the method embodiments is performed.
Furthermore, the present application also provides a communication apparatus, including at least one processor coupled with at least one memory, where the at least one processor is configured to execute a computer program or instructions stored in the at least one memory, so that the communication apparatus performs the operations and/or processes performed by the transmitting end in any one of the method embodiments.
The present application further provides a communication apparatus comprising at least one processor coupled with at least one memory, the at least one processor being configured to execute computer programs or instructions stored in the at least one memory, so that the communication apparatus performs the operations and/or processes performed by the receiving end in any of the method embodiments.
In addition, the present application also provides a communication device comprising a processor and a memory. Optionally, a transceiver may also be included. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and controlling the transceiver to transmit and receive signals, so that the communication device executes the operations and/or processes executed by the transmitting end in any one of the method embodiments.
The present application further provides a communication device comprising a processor and a memory. Optionally, a transceiver may also be included. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and controlling the transceiver to transmit and receive signals, so that the communication device executes the operation and/or the processing executed by the receiving end in any one of the method embodiments.
The memory in the embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), SLDRAM (synchronous DRAM), and Direct Rambus RAM (DRRAM). 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.
The methods provided by the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media.
In the embodiments of the present application, numbers such as "first" and "second" are used to distinguish the same or similar items with substantially the same function and action. For example, the first indication information and the second indication information are only for distinguishing different indication information, and the first activation signaling and the second activation signaling are only for distinguishing different activation signaling. Those skilled in the art will appreciate that the numbers "first", "second", etc. do not limit the number or order of execution, and that the words "first", "second", etc. do not necessarily differ.
In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. 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 and c can be single or multiple.
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 implementation. 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 present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into 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 solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (18)
1. A method of semi-persistent scheduling, comprising:
receiving configuration information for configuring a first search space, SS, associated with a semi-static transmission, the first SS being active during activation of the semi-static transmission;
receiving a first control channel, wherein the first control channel belongs to the first SS, and the first control channel indicates information of a modulation mode and/or a coding mode of the semi-static transmission.
2. The method of claim 1, wherein the first SS is active during activation of the semi-static transmission, comprising:
monitoring control channel candidates for the first SS during an active period of the semi-static transmission, wherein the active period is a time interval between receiving the configuration information and receiving configuration information for releasing the semi-static transmission.
3. The method of claim 2, wherein the monitoring the control channel candidates for the first SS during the activation of the semi-static transmission comprises:
receiving first activation signaling, wherein the first activation signaling is used for activating the semi-static transmission;
monitoring control channel candidates for the first SS while or after the semi-static transmission is activated;
or,
the monitoring control channel candidates for the first SS during activation of the semi-static transmission includes:
the configuration information is used to activate the semi-static transmission.
4. The method of any of claims 1-3, wherein the configuration information is for configuring a first SS associated with semi-static transmission, comprising:
the configuration information indicates an index of the first SS;
alternatively, the configuration information includes a configuration parameter set of the first SS.
5. The method of any one of claims 1-4, further comprising:
after receiving the first control channel, receiving first data, the first data scheduled by the semi-persistent transmission;
and decoding the first data according to the information of the modulation mode and/or the coding mode indicated by the first control channel.
6. The method of any of claims 1-5, wherein a period of the semi-static transmission is less than or equal to a monitoring period of the first SS.
7. The method of claim 6, wherein the monitoring time of the first SS is in a same time slot as a first time, wherein the first time is a transmission time of the semi-static transmission that is after and closest to the monitoring time of the first SS.
8. The method of any one of claims 1-7, wherein the first control channel is further used to indicate whether to blind detect a second control channel at a second time instant;
the second control channel is used for scheduling second data, and the second time is later than the monitoring time of the first control channel.
9. The method of any one of claims 1-7, wherein the first control channel is further used to indicate a time range for blind detection of a second control channel and for blind detection of the second control channel,
wherein the second control channel is used to schedule second data.
10. The method of claim 8 or 9, wherein the semi-static transmission is further associated with a second SS, and wherein the second control channel is obtained by monitoring control channel candidates of the second SS.
11. The method of any one of claims 1-10, wherein the configuration information is further for configuring information of HARQ processes corresponding to the M data transmission units scheduled for the semi-static transmission,
and the first control channel is further configured to indicate M HARQ process numbers corresponding to the M data transmission units, where M is greater than 1 and is an integer.
12. The method of claim 11, wherein the first control channel is further used for indicating information of M HARQ processes corresponding to the M data transmission units, and comprises:
the first control channel is further configured to indicate respective offset information of the M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the j-th data transmission unit in the M data transmission units represents an offset of the HARQ process number corresponding to the j-th data transmission unit in the current semi-static scheduling transmission opportunity relative to the HARQ process number corresponding to the j-th data transmission unit configured by the configuration information in the current semi-static scheduling transmission opportunity, where j is 1 & lt j & gt & lt/M, and j is an integer.
13. A method of semi-persistent scheduling, comprising:
receiving configuration information, wherein the configuration information is used for configuring a first Search Space (SS) related to semi-static transmission;
receiving a first control channel, where the first control channel belongs to the first SS, and the first control channel indicates that the semi-static transmission schedules information of M HARQ processes corresponding to M data transmission units, where M is an integer greater than 1.
14. The method of claim 13, wherein the first control channel is used for indicating information of M HARQ processes corresponding to the M data transmission units, and comprises:
the first control channel is used for indicating offset information of M HARQ processes corresponding to the M data transmission units,
wherein, the offset information of the HARQ process corresponding to the jth data transmission unit in the M data transmission units represents an offset of the HARQ process number adopted by the jth data transmission unit in the current semi-persistent scheduling transmission opportunity relative to the HARQ process number adopted by the jth data transmission unit configured by the configuration information in the current semi-persistent scheduling transmission opportunity, where j is greater than or equal to 1 and less than or equal to M, and j is an integer.
15. A communications apparatus, comprising at least one processor coupled with at least one memory, the at least one processor to execute a computer program or instructions stored in the at least one memory to cause the communications apparatus to perform the method of any of claims 1-14.
16. A chip comprising a processor and a communication interface for receiving data and/or information and transmitting the received data and/or information to the processor, the processor processing the data and/or information to perform the method of any one of claims 1-14.
17. A computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause the method of any one of claims 1-14 to be implemented.
18. A computer program product, characterized in that it comprises computer program code which, when run on a computer, causes the method according to any of claims 1-14 to be implemented.
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| US11503587B2 (en) * | 2018-12-20 | 2022-11-15 | Qualcomm Incorporated | Semi-persistent scheduling with multiple transmit-receive points |
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| WO2024169935A1 (en) * | 2023-02-14 | 2024-08-22 | 大唐移动通信设备有限公司 | Data transmission method, device and apparatus |
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| WO2022252967A1 (en) | 2022-12-08 |
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