CN113596738B

CN113596738B - Information acquisition method, information determination method, information acquisition device, information determination device and related equipment

Info

Publication number: CN113596738B
Application number: CN202010368259.7A
Authority: CN
Inventors: 李娜; 潘学明; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2022-09-27
Anticipated expiration: 2040-04-30
Also published as: CN113596738A; WO2021218907A1

Abstract

The application discloses an information acquisition method, an information determination device and related equipment, which belong to the technical field of communication, and the specific scheme comprises the following steps: obtaining HARQ-ACK related information, wherein the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, and the HARQ-ACK related information comprises at least one of the following items: the terminal detects first HARQ-ACK related information included in the unicast DCI; and the terminal acquires or implicitly determines the second HARQ-ACK related information in advance. So that the terminal can acquire the HARQ-ACK related information. And the terminal can also support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.

Description

Information acquisition method, information determination method, information acquisition device, information determination device and related equipment

Technical Field

The present application belongs to the field of communications technologies, and in particular, to an information obtaining method, an information determining apparatus, and a related device.

Background

Some communication systems (e.g., 5G systems) support multicast services, such as: multimedia Broadcast Multicast Service (MBMS). The multicast service is mainly scheduled by multicast Downlink Control Information (DCI), such as a Physical Downlink Shared Channel (PDSCH) scheduled by multicast DCI. In these communication systems, the network side does not send HARQ-ACK (Hybrid Automatic Repeat request Acknowledgement) related information of the multicast service to the terminal at present, so that the terminal cannot obtain the HARQ-ACK related information.

Disclosure of Invention

The embodiment of the application provides an information acquisition method, an information determination device and related equipment, and can solve the problem that a terminal cannot acquire HARQ-ACK related information.

In a first aspect, an embodiment of the present application provides an information obtaining method, which is applied to a terminal, and includes:

obtaining HARQ-ACK related information, wherein the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, and the HARQ-ACK related information comprises at least one of the following items:

the terminal detects first HARQ-ACK related information included in unicast DCI;

and the terminal acquires or implicitly determines the second HARQ-ACK related information in advance.

In a second aspect, an embodiment of the present application provides an information determining method, which is applied to a network device, and includes:

determining HARQ-ACK related information which is used for HARQ-ACK feedback of a multicast PDSCH of a terminal, wherein the HARQ-ACK related information comprises at least one of the following items:

first HARQ-ACK related information included in unicast DCI sent to the terminal;

and the network equipment acquires or implicitly determines the second HARQ-ACK related information in advance.

In a third aspect, an embodiment of the present application provides an information acquisition apparatus, including:

an obtaining module, configured to obtain HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, and the HARQ-ACK related information includes at least one of the following information:

In a fourth aspect, an embodiment of the present application provides an information determining apparatus, including:

a determining module, configured to determine HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of a terminal, and the HARQ-ACK related information includes at least one of:

and the network equipment acquires or implicitly determines second HARQ-ACK related information in advance.

In a fifth aspect, an embodiment of the present application provides a terminal, including: the information acquisition method comprises a memory, a processor and a program or instructions stored on the memory and capable of running on the processor, wherein the program or instructions realize the steps in the information acquisition method provided by the embodiment of the application when being executed by the processor.

In a sixth aspect, an embodiment of the present application provides a network device, including: the information determination method includes a memory, a processor, and a program or instructions stored in the memory and executable on the processor, where the program or instructions implement the steps of the information determination method provided by the embodiment of the application when executed by the processor.

In a seventh aspect, an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and the program or the instruction, when executed by a processor, implements the steps in the information obtaining method provided in the embodiment of the present application, or the program or the instruction, when executed by the processor, implements the steps in the information determining method provided in the embodiment of the present application.

In an eighth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement the information obtaining method or the information determining method provided in the embodiment of the present application.

In the embodiment of the present application, HARQ-ACK related information is obtained, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, and the HARQ-ACK related information includes at least one of the following information: the terminal detects first HARQ-ACK related information included in unicast DCI; and the terminal acquires or implicitly determines second HARQ-ACK related information in advance. So that the terminal can acquire the HARQ-ACK related information. And the terminal can also support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present application is applicable;

fig. 2 is a flowchart of an information obtaining method according to an embodiment of the present application;

fig. 3 is a flowchart of an information determination method provided in an embodiment of the present application;

fig. 4 is a schematic diagram of DCI scheduling provided in an embodiment of the present application;

fig. 5 is a schematic diagram of another DCI scheduling provided in an embodiment of the present application;

fig. 6 is a schematic diagram of another DCI scheduling provided in an embodiment of the present application;

fig. 7 is a structural diagram of an information acquisition apparatus according to an embodiment of the present application;

fig. 8 is a structural diagram of another information acquisition apparatus according to an embodiment of the present application;

fig. 9 is a block diagram of an information determination apparatus according to an embodiment of the present application;

fig. 10 is a block diagram of an information determination apparatus according to an embodiment of the present application;

fig. 11 is a block diagram of a terminal according to an embodiment of the present disclosure;

fig. 12 is a block diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, e.g., a and/or B, means that three conditions exist including a alone, B alone, and both a and B.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "such as" in an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.

Embodiments of the present invention are described below with reference to the drawings. The uplink resource determining method, the indicating method, the terminal and the network equipment provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a New Radio (NR) system, or other systems, such as: an Evolved Long Term Evolution (LTE) system, a Long Term Evolution (LTE) system, or a subsequent Evolved communication system, etc. Further, the method can be applied to an Unlicensed Band (Unlicensed Band) in the wireless communication system.

Referring to fig. 1, fig. 1 is a structural diagram of a network system to which the embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal 11 and a network device 12, where the terminal 11 may be a User Equipment (UE) or other terminal-side devices, for example: a terminal side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a robot, it should be noted that a specific type of the terminal 11 is not limited in the embodiment of the present invention. The network device 12 may be a 4G base station, or a 5G base station, or a later-version base station, or a base station in another communication system, or referred to as a node B, an evolved node B, or a Transmission Reception Point (TRP), or an Access Point (AP), or another vocabulary in the field, and the network device is not limited to a specific technical vocabulary as long as the same technical effect is achieved. In addition, the network device 12 may be a Master Node (MN) or a Secondary Node (SN). It should be noted that, in the embodiment of the present invention, only the 5G base station is taken as an example, but the specific type of the network device is not limited.

Referring to fig. 2, fig. 2 is a flowchart of an information obtaining method provided in an embodiment of the present application, where the method is applied to a terminal, and as shown in fig. 2, the method includes the following steps:

step 201, obtaining HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, where the HARQ-ACK related information includes at least one of the following:

and the terminal acquires or implicitly determines second HARQ-ACK related information in advance.

Wherein, the obtaining of the HARQ-ACK related information may include at least one of:

receiving HARQ-ACK related information sent by network equipment;

and reading the pre-acquired HARQ-ACK related information.

In the embodiment of the present application, the HARQ-ACK related information may refer to related information for HARQ-ACK feedback, for example: and the method is used for determining the time domain, frequency domain, space domain resources, bit number, transmission power and other related information of the feedback HARQ-ACK.

In addition, the fact that the first HARQ-ACK related information obtained in step 201 includes at least one of the first HARQ-ACK related information and the second HARQ-ACK related information may be understood as follows:

the first HARQ-ACK related information obtained in step 201 includes the first HARQ-ACK related information;

or, the first HARQ-ACK related information obtained in step 201 includes the second HARQ-ACK related information;

or, the first HARQ-ACK related information obtained in step 201 includes the first HARQ-ACK related information and the second HARQ-ACK related information. In this case, there may be no intersection between the first HARQ-ACK related information and the second HARQ-ACK related information, and certainly, there may also be an intersection, and when there is an intersection, the priority of the intersection may be predefined, for example, the priority of the HARQ-ACK related information included in the unicast DCI is predefined to be higher than the priority of the HARQ-ACK related information acquired in advance.

The pre-acquired HARQ-ACK related information may be HARQ-ACK related information predefined by a protocol or pre-configured to the terminal by the network side.

In addition, the multicast PDSCH of the terminal may be one or more multicast PDSCHs, and HARQ-ACKs of these PDSCHs may be fed back on the same or different resources. For example: all the information is fed back on one resource corresponding to the first HARQ-ACK related information, or multiple multicast PDSCHs are fed back on multiple resources corresponding to the first HARQ-ACK related information, for example, fed back on multiple time slots.

The terminal can acquire the HARQ-ACK related information through the steps, so that the terminal can support the HARQ-ACK feedback of the multicast service, and the reliability of multicast service transmission is improved.

In addition, in the application, the first HARQ-ACK related information of the unicast DCI can be included, so that a plurality of terminals receiving the multicast PDSCH can feed back HARQ-ACK in different time units, and the effect of HARQ-ACK load balancing is achieved.

It should be noted that the unicast DCI may be one or more DCIs.

As an optional implementation, the unicast DCI includes: scheduling multicast DCI for the multicast PDSCH followed by a first unicast DCI detected by the terminal.

The multicast DCI may be all DCIs of the multicast PDSCH of the terminal in step 201, for example: if there are multiple multicast PDSCHs in step 201, the multicast DCI according to this embodiment refers to one or more DCIs that schedule the multiple multicast PDSCHs.

In this embodiment, since the unicast DCI includes the first unicast DCI detected by the terminal after the multicast DCI, the terminal may accurately and timely determine the first HARQ-ACK related information of the multicast PDSCH. For example: the multicast DCI of one multicast PDSCH is before the first unicast DCI, the multicast DCI of the other two multicast PDSCHs is after the first unicast DCI and before the second unicast DCI, the first HARQ-ACK related information of the first two multicast PDSCHs is HARQ-ACK related information in the first unicast DCI, and the first HARQ-ACK related information of the second two multicast PDSCHs is HARQ-ACK related information in the second unicast DCI.

As an optional embodiment, the unicast DCI includes: a first unicast DCI detected by the terminal after the multicast PDSCH (e.g., at least one of a starting or ending symbol of DCI after a starting or ending symbol of the multicast PDSCH). The method can be applied to the case that the multicast PDSCH does not have corresponding scheduling DCI, for example, the case that the multicast PDSCH is transmitted in a specific time-frequency domain according to high-layer configuration (for example, according to SPS PDSCH or MBSFN, determining transmission time-frequency resources of the multicast PDSCH).

As an optional implementation manner, the first HARQ-ACK related information includes at least one of the following:

downlink Assignment Index (DAI), feedback timing indication, PUCCH Resource Indication (PRI), transmission power indication, priority indication (priority Indicator).

The DAI may include a counting DAI (C-DAI), a total DAI (T-DAI), or a T-DAI.

The feedback timing indication may indicate a feedback time of HARQ-ACK, for example: a PDSCH-to-HARQ feedback time indication (PDSCH-to-HARQ _ feedback timing indicator), i.e., a k1 indication, may be included as k1 indicates a time interval between the PDSCH and the corresponding HARQ-ACK.

The above-mentioned transmit power indication may indicate a power indication for HARQ-ACK feedback, such as including a Transmit Power Control (TPC) indication.

The priority indication may indicate a priority of the HARQ-ACK.

It should be noted that, if the first HARQ-ACK related information includes only one of the DAI, the feedback timing indication, the PRI, the transmit power indication, and the priority indication, the other part of the indication may be indicated or preconfigured by the DCI of the multicast PDSCH, or agreed by a protocol, for example, configured by the second HARQ-ACK related information.

In addition, at least one of the items may be included in one or more DCIs, for example: one DCI includes the DAI, and the other DCI includes at least one of a feedback timing indication, a PRI, a transmit power indication, and a priority indication.

Optionally, the DAI includes:

a first bit and/or a second bit, wherein the first bit is used for indicating a unicast PDSCH and the second bit is used for indicating a multicast PDSCH; or

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

The indication unicast PDSCH may indicate scheduling of a unicast PDSCH, and the indication multicast PDSCH may indicate scheduling of a multicast PDSCH.

The joint indication of the unicast PDSCH and the multicast PDSCH may be performed by indicating the unicast PDSCH scheduling and the multicast PDSCH respectively in a joint indication manner, or indicating the sum of the unicast PDSCH and the multicast PDSCH.

For example: the unicast DCI comprises X-bit DAI for indicating the scheduling of the unicast PDSCH, and Y-bit DAI for multicast PDSCH scheduling, or comprises Z-bit DAI for indicating the scheduling of the unicast PDSCH and the multicast PDSCH.

Optionally, if HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a Physical Uplink Shared Channel (PUSCH), the unicast DCI includes DCI for scheduling the PUSCH.

Wherein, the at least one multicast PDSCH multiplexed by the HARQ-ACK and transmitted on the physical uplink shared channel PUSCH may be a part or all of the multicast PDSCH in step 201.

In the embodiment, when the HARQ-ACK multiplexing PUSCH of the multicast PDSCH is transmitted, the HARQ-ACK related information comprises the HARQ-ACK related information of DCI for scheduling the PUSCH, so that the HARQ-ACK of the PDSCH can be correctly multiplexed and transmitted on the PUSCH, the inconsistency of the base station and the terminal in understanding the number of the HARQ-ACK bits is avoided, and the effectiveness and the reliability of the communication system are improved.

Optionally, the first HARQ-ACK related information in step 201 may be included in the DCI for scheduling the PUSCH, or may be included in the DCI for scheduling the PUSCH and a first unicast DCI detected by the terminal after the multicast DCI for scheduling the multicast PDSCH, where the first unicast DCI includes at least one of the feedback timing indication, the PRI, the transmission power indication, and the priority indication, and if the DCI for scheduling the PUSCH includes the T-DAI, the first unicast DCI includes at least one of the feedback timing indication, the PRI, the transmission power indication, and the priority indication. Namely, HARQ-ACK feedback can be carried out by using HARQ-ACK related information included by a plurality of DCIs, and the correct feedback of the HARQ-ACK information is ensured.

It should be noted that the HARQ-ACK multiplexing of the at least one multicast PDSCH may be transmitted in an uplink manner, and the terminal may transmit the HARQ-ACK multiplexing of the at least one multicast PDSCH in an uplink manner, so that the foregoing embodiment may be understood as follows:

if the terminal multiplexes HARQ-ACK of at least one multicast PDSCH on a PUSCH for transmission and the unicast DCI includes DCI for scheduling the PUSCH, the first HARQ-ACK related information in the unicast DCI detected by the terminal includes the DAI indication information, and the DAI indication information may include:

a first bit and a second bit, wherein the first bit is used to indicate a unicast PDSCH and the second bit is used to indicate a multicast PDSCH; or alternatively

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

In addition, since the unicast DCI includes DCI for scheduling PUSCH transmission, only the T-DAI may be included in DCI, that is, uplink grant (UL grant), and other information is not included. For example: for T-DAI in UL grant, a scenario that the terminal only has a multicast PDSCH and does not have unicast downlink scheduling, that is, there is no first bit, only a second bit, or a third bit, may be considered.

Further, in the above embodiment, the DCI scheduling the PUSCH may be a non-fallback (non-fallback) DCI, and the DCI may include only a T-DAI and not a C-DAI. And HARQ-ACK for multicast PDSCH may be multiplexed for transmission on the above PUSCH.

Optionally, when the multicast PDSCH of the terminal corresponds to Q different Radio Network Temporary Identifiers (RNTI):

the second bits include Q bit groups, and the Q bit groups are respectively used for indicating the multicast PDSCHs corresponding to the Q RNTIs;

q is an integer greater than or equal to 1, or is an integer greater than or equal to 1 and less than or equal to a preset threshold.

The Q different RNTIs corresponding to the multicast PDSCH of the terminal may be T multicast PDSCH of the terminal corresponding to Q different RNTIs, where T is an integer greater than or equal to Q, that is, the case where there are multiple RNTIs that are the same for the multicast PDSCH may exist.

In addition, the RNTI may be a Group Radio network temporary identifier (g-RNTI).

For example: the second bit comprises N ₁ ,N ₂ ,…,N _Q The T-DAIs respectively correspond to the multicast PDSCHs corresponding to different RNTIs.

Further, Q may be less than or equal to a certain threshold.

Optionally, the manner of indicating the PDSCH by the DAI is configured by higher layer signaling.

That is, the DAI includes a first bit, or the DAI includes a first bit and a second bit, or the DAI includes a third bit, and the like, which manner is specifically adopted by the higher layer signaling configuration may be adopted, and of course, this is not limited, and a protocol convention may also be adopted.

As an optional implementation manner, the second HARQ-ACK related information obtained in advance by the terminal includes: configuring second HARQ-ACK related information or predefined second HARQ-ACK related information by high-layer signaling;

alternatively, the first and second electrodes may be,

the second HARQ-ACK related information implicitly determined by the terminal includes: and second HARQ-ACK related information determined according to the service type or the service priority of the multicast PDSCH.

Wherein the second HARQ-ACK related information may include: and the priority of the HARQ-ACK of the multicast PDSCH, such as a codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH. Of course, this is not limited, for example: may include a PRI.

For example: the terminal can determine a codebook priority index corresponding to HARQ-ACK of the multicast PDSCH according to the high-level signaling configuration; or predefining a codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH, for example, a low priority, or determining the codebook priority index of the HARQ-ACK of the multicast PDSCH according to the service type or the service priority corresponding to the PDSCH reported by the terminal.

In addition, the second HARQ-ACK related information determined according to the traffic type of the multicast PDSCH may be determined according to a correspondence between a pre-acquired traffic type or traffic priority and HARQ-ACK related information.

In this embodiment, the second HARQ-ACK related information may be obtained in advance, so that transmission overhead may be saved.

As an optional implementation, the method further includes:

and performing HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.

The performing of HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information may be determining information such as feedback resources and priority of HARQ-ACK of the multicast PDSCH according to the HARQ-ACK related information, and then performing HARQ-ACK feedback of the multicast PDSCH based on the determined information, so as to improve transmission reliability of the multicast PDSCH.

As an optional implementation, the multicast DCI scheduling the multicast PDSCH does not include the HARQ-ACK related information.

The multicast DCI not including the HARQ-ACK related information may be that the multicast DCI does not include related content in the HARQ-ACK related information included in step 201.

For example: the DAI of the multicast PDSCH is obtained by the DAI indication in the unicast DCI, and the multicast DCI does not contain the DAI indication.

Another example is: the k1 of the multicast PDSCH is indicated by k1 in the latest unicast DCI after the multicast DCI, wherein the multicast DCI does not include a feedback timing indication field (e.g., PDSCH-to-HARQ feedback timing field). In this way, the terminal may transmit the HARQ-ACK corresponding to the multicast PDSCH in a time slot n, where the time slot n is indicated according to the feedback timing indication field in the unicast DCI, and the unicast DCI may specifically be the first unicast DCI detected by any PDCCH detection opportunity after the multicast DCI.

Another example is: and the UE determines the PUCCH resource for feeding back the HARQ-ACK according to the PRI indication in the unicast DCI, wherein the PRI indication is not contained in the multicast DCI. In this way, the terminal may transmit HARQ-ACK for the multicast PDSCH on PUCCH1, where PUCCH1 is determined from the PRI indication in the unicast DCI that includes the first unicast DCI detected by any one PDCCH detection opportunity following the multicast DCI.

Another example is: and the terminal determines a codebook priority index corresponding to HARQ-ACK of the multicast PDSCH according to the priority indication of the unicast DCI, wherein the multicast DCI does not contain a priority indication domain, and the unicast DCI comprises the first unicast DCI detected by any PDCCH detection opportunity after the multicast DCI.

In the embodiment of the present application, HARQ-ACK related information is obtained, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast PDSCH of the terminal, and the HARQ-ACK related information includes at least one of the following information: the terminal detects first HARQ-ACK related information included in the unicast DCI; and the terminal acquires or implicitly determines the second HARQ-ACK related information in advance. So that the terminal can acquire the HARQ-ACK related information. And the terminal can also support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.

Referring to fig. 3, fig. 3 is a flowchart of an information determining method provided in an embodiment of the present application, where the method is applied to a network device, and as shown in fig. 3, the method includes the following steps:

step 301, determining HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast channel PDSCH of a terminal, where the HARQ-ACK related information includes at least one of the following:

Optionally, the unicast DCI includes: and scheduling the multicast DCI of the multicast PDSCH and then sending the multicast DCI to a first unicast DCI of the terminal.

Optionally, the first HARQ-ACK related information includes at least one of the following:

downlink allocation indication DAI, feedback timing indication, PUCCH resource indication PRI, transmission power indication and priority indication.

Optionally, the DAI includes:

a first bit and/or a second bit, wherein the first bit is used for indicating a unicast PDSCH, and the second bit is used for indicating a multicast PDSCH; or alternatively

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

Optionally, HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a physical uplink shared channel PUSCH, and the unicast DCI includes DCI for scheduling the PUSCH.

Optionally, when the multicast PDSCH of the terminal corresponds to Q different radio network temporary identifiers RNTI:

the second bits comprise Q bit groups, and the Q bit groups are respectively used for indicating the multicast PDSCHs corresponding to the Q RNTIs;

Optionally, the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.

Optionally, the second HARQ-ACK related information obtained in advance by the network device includes: the high-layer signaling configures second HARQ-ACK related information or predefined second HARQ-ACK related information;

alternatively, the first and second electrodes may be,

the second HARQ-ACK related information pre-implicitly determined by the network device includes: and second HARQ-ACK related information determined according to the service type of the multicast PDSCH.

Optionally, the second HARQ-ACK related information includes: priority of HARQ-ACK of the multicast PDSCH.

Optionally, the method further includes:

and receiving the HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.

Optionally, the multicast DCI scheduling the multicast PDSCH does not include the HARQ-ACK related information.

It should be noted that, this embodiment is used as an implementation manner of a network device side corresponding to the embodiment shown in fig. 2, and a specific implementation manner of this embodiment may refer to a relevant description of the embodiment shown in fig. 2, so as to avoid repeated description, and this embodiment is not described again. In this embodiment, the terminal may also obtain HARQ-ACK related information.

The following illustrates an information obtaining method provided by the embodiments of the present application by using a plurality of embodiments, which may include the following:

example 1: as shown in fig. 4, DCI 1-4 schedules PDSCH 1-4, respectively, where DCI 1-2 is multicast DCI, DCI 3-4 is unicast DCI, and DCI 1-2 schedules unicast PDSCH 3-4.

Wherein, the multicast DCI 1-2 does not contain DAI indication, and the DAI information of the scheduled PDSCH is obtained according to the first unicast DCI. As shown in FIG. 4, DCI3 contains 2 bits of C-DAI or T-DAI for indicating multicast PDSCH, and the value of C-DAI or T-DAI is 2, which indicates that two multicast PDSCHs are scheduled to the current PDCCH reception opportunity. Meanwhile, the unicast DCI also comprises 2C-DAIs for the unicast PDSCH than the other C-DAIs, and the C-DAI value is 1, which indicates that the unicast PDSCH currently scheduled is the first unicast PDSCH.

In addition, the multicast DCI 1-2 may not include PDSCH-to-HARQ-ACK feedback timing indication information, and the timing indication information is obtained according to the first unicast DCI after the multicast DCI 1-2, as shown in fig. 4, if the value (k1) of the PDSCH-to-HARQ-ACK feedback timing indication information in the DCI3 is 2, it indicates that the PDSCH3 with the end symbol at the slot n is fed back at the slot n +2, and the UE will feed back HARQ-ACKs of the PDSCH1 and PDSCH2 at the n +2 slot, that is, the UE determines the time slot for feeding back HARQ-ACKs of the PDSCH1 and PDSCH2 according to the PDSCH-to-HARQ-ACK feedback timing indication information in the DCI 3.

In addition, the multicast DCI 1-2 may not include PRI indication information, and the terminal determines the PUCCH resource for feeding back the HARQ-ACK according to the indication of the unicast DCI. As in fig. 4, if there is no DCI 4, the terminal determines to feed back PUCCH resources of PDSCH1, PDSCH2, PDSCH3 according to the indication of DCI 3. As shown in fig. 4, the terminal feeds back HARQ-ACK of PDSCH1, PDSCH2, PDSCH3 and PDSCH4 in slot n +2, and then the terminal determines PUCCH resources for feeding back HARQ-ACK according to the PRI of the last DCI (last DCI) and/or the Control Channel element index (CCE index) in the unicast DCI. Similarly, the multicast DCI may not include the TPC indication information, and the terminal determines the transmission power of the PUCCH according to the TPC in the unicast DCI.

In addition, when the terminal feeds back the HARQ-ACK of the PDSCHs 1-4 at the time slot n +2, the terminal may respectively construct an HARQ-ACK (sub-) codebook for the multicast PDSCH1-2 and an HARQ-ACK (sub-) codebook for the unicast PDSCH3-4, and concatenate the two (sub-) codebooks into one codebook.

In another embodiment, as shown in fig. 5, the unicast DCI only includes one DAI indication for indicating unicast and multicast PDSCH scheduling, where as shown in DCI3, the DAI is 3, which indicates that the current PDCCH reception opportunity is current DCI, and 3 PDSCHs are scheduled in total, that is, two PDSCHs, i.e., PDSCH1 and PDSCH2, are scheduled before DCI3 in addition to PDSCH3 scheduled by current DCI 3.

Example 2:

as shown in FIG. 6, the terminal feeds back HARQ-ACK of multicast PDSCH1-2 and unicast PDSCH3-4 in slot n +2, the PUSCH scheduled by DCI5 overlaps with HARQ-ACK PUCCH resources, and the terminal multiplexes the HARQ-ACK on the PUSCH for transmission.

Among other things, DCI5 may contain T-DAIs. In one embodiment, two T-DAIs in DCI5, a first DAI is used to indicate multicast PDSCH, as in fig. 6, if the first T-DAI is 3, it indicates that the terminal is to feed back three multicast PDSCH in the current time slot, and the terminal may determine that the terminal misses the third multicast DCI according to C-DAI and T-DAI. The DCI5 also includes a second T-DAI for unicasting PDSCH, and if the second T-DAI is 2, it indicates that the UE feeds back two PDSCHs, i.e. PDSCH3 and PDSCH4, in the current time slot, as shown in fig. 6.

In another embodiment, only one T-DAI indication is included in the UL grant. In one approach this T-DAI is applied to both multicast PDSCH and unicast PDSCH, indicating the total number of multicast PDSCH and unicast PDSCH fed back at the current time slot. In the mode, only one T-DAI is provided, the bit overhead is small, and the influence of missed detection of downlink DCI on PUSCH transmission is avoided. In another approach, the T-DAI is applied to unicast PDSCH and represents the total number of unicast PDSCH fed back in the current slot. In another approach, the T-DAI is applied to multicast PDSCH and indicates the total number of multicast PDSCH fed back in the current time slot.

In another embodiment, multiple T-DAI indications are included in the UL grant for the multicast PDSCH. In one mode, the number of T-DAIs is determined according to the number of g-RNTIs of the scheduling multicast PDSCH configured by the UE or according to a high-level signaling. Each T-DAI corresponds to one g-RNTI and is used for indicating the total number of PDSCHs scheduled by the g-RNTI fed back in the time slot.

In addition, the T-DAI indication scheme of the UL grant may be that no DAI indication is present in the multicast DCI when the DAI indication is present in the multicast DCI, that is, the DAI indication scheme of the UL grant is independent of the DAI indication scheme of the multicast DCI.

Example 3:

when scheduling the unicast PDSCH, the DCI may also indicate a codebook priority index corresponding to the HARQ-ACK of the PDSCH, for example, a priority indicator field indication in the DCI. The terminal may determine which codebook the HARQ-ACK belongs to according to the priority index indication, and a processing manner of the terminal when the HARQ-ACK PUCCH collides with other uplink transmission time domain resources (e.g., when a high-priority HARQ-ACK PUCCH collides with a low-priority PUSCH, the terminal discards the PUSCH, transmits the PUCCH, and multiplexes UCI on the PUSCH for transmission if the PUCCH and the PUSCH have the same priority). For the codebook priority index problem corresponding to the HARQ-ACK of the multicast PDSCH, the indication may be made in any manner as follows:

configuring high-level signaling;

a default priority (i.e., a predefined priority index);

multicasting DCI indication corresponding to the PDSCH;

determined by unicast DCI after the multicast PDSCH.

And determining the service type or service priority corresponding to the multicast PDSCH.

It should be noted that, in the information obtaining method provided in the embodiment of the present application, the execution main body may be an information obtaining apparatus, or a control module in the information obtaining apparatus, for executing the loaded information obtaining method. In the embodiment of the present application, an information obtaining method executed by an information obtaining method device is taken as an example to describe the information obtaining method provided in the embodiment of the present application. And in the information determining method provided by the embodiment of the application, the execution subject may be an information determining device, or a control module in the information determining device for executing the loaded information determining method. In the embodiment of the present application, an information determining apparatus is taken as an example to execute a method for determining loaded information, and the method for determining information provided in the embodiment of the present application is described.

Referring to fig. 7, fig. 7 is a structural diagram of an information acquisition apparatus according to an embodiment of the present application, and as shown in fig. 7, an information acquisition apparatus 700 includes:

an obtaining module 700, configured to obtain HARQ-ACK related information for hybrid automatic repeat request acknowledgement, HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast physical downlink shared channel PDSCH of the terminal, and the HARQ-ACK related information includes at least one of the following information:

the terminal detects first HARQ-ACK related information included in the DCI;

Optionally, the unicast DCI includes: scheduling multicast DCI for the multicast PDSCH followed by a first unicast DCI detected by the terminal.

Optionally, the DAI includes:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

Optionally, if HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a physical uplink shared channel PUSCH, the unicast DCI includes DCI for scheduling the PUSCH.

Optionally, the second HARQ-ACK related information obtained in advance by the terminal includes: configuring second HARQ-ACK related information or predefined second HARQ-ACK related information by high-layer signaling;

alternatively, the first and second liquid crystal display panels may be,

the second HARQ-ACK related information implicitly determined by the terminal includes: and second HARQ-ACK related information determined according to the service type of the multicast PDSCH.

Optionally, as shown in fig. 8, the apparatus includes:

a feedback module 702, configured to perform HARQ-ACK feedback for the multicast PDSCH according to the HARQ-ACK related information.

Optionally, the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.

The information obtaining apparatus provided in the embodiment of the present invention can implement each process in the method embodiment of fig. 2, and is not described herein again to avoid repetition, and can enable the terminal to obtain HARQ-ACK related information.

The information acquiring device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.

Referring to fig. 9, fig. 9 is a structural diagram of an information determining apparatus according to an embodiment of the present application, and as shown in fig. 9, the information determining apparatus 900 includes:

a determining module 901, configured to determine HARQ-ACK related information for hybrid automatic repeat request acknowledgement, HARQ-ACK related information used for HARQ-ACK feedback of a multicast physical downlink shared channel PDSCH of a terminal, where the HARQ-ACK related information includes at least one of:

first HARQ-ACK related information included in unicast downlink control information DCI sent to the terminal;

Optionally, the DAI includes:

a first bit and/or a second bit, wherein the first bit is used for indicating a unicast PDSCH, and the second bit is used for indicating a multicast PDSCH; or

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

Optionally, the second HARQ-ACK related information obtained in advance by the network device includes: configuring second HARQ-ACK related information or predefined second HARQ-ACK related information by high-layer signaling;

alternatively, the first and second electrodes may be,

Optionally, as shown in fig. 10, the apparatus further includes:

a receiving module 802, configured to receive HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.

The information determining apparatus provided in the embodiment of the present invention can implement each process in the method embodiment of fig. 3, and is not described herein again to avoid repetition, and can enable the terminal to obtain HARQ-ACK related information.

It should be noted that the acquisition determining apparatus in the embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a network device.

Fig. 11 is a schematic hardware structure diagram of a terminal for implementing the embodiment of the present application.

The terminal 1100 includes, but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, a processor 1110, and the like.

Those skilled in the art will appreciate that terminal 1100 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1110 via a power management system to facilitate managing charging, discharging, and power consumption via the power management system. The electronic device structure shown in fig. 11 does not constitute a limitation to the electronic device, and the electronic device may include more or less components than those shown in the drawings, or combine some components, or arrange different components, and thus, the description is omitted here.

Wherein, the radio frequency unit 1101 or the processor 1110 is configured to acquire HARQ-ACK related information for hybrid automatic repeat request acknowledgement (HARQ-ACK), where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast Physical Downlink Shared Channel (PDSCH) of the terminal, and the HARQ-ACK related information includes at least one of the following information:

the terminal detects first HARQ-ACK related information included in the DCI;

Optionally, the unicast DCI includes: scheduling the first unicast DCI detected by the terminal after the multicast DCI of the multicast PDSCH.

Optionally, the DAI includes:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

alternatively, the first and second electrodes may be,

Optionally, the radio frequency unit 1101 is further configured to:

The terminal may obtain the HARQ-ACK related information. And the terminal can also support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.

Optionally, an embodiment of the present invention further provides a terminal, which includes a processor 1110, a memory 1109, and a program or an instruction stored in the memory 1109 and executable on the processor 1110, where the program or the instruction is executed by the processor 1110 to implement each process of the above-described uplink information determining method embodiment, and the same technical effect can be achieved, and details are not described here to avoid repetition.

Referring to fig. 12, fig. 12 is a structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 12, the network device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203 and a bus interface, wherein:

the transceiver 1202 or the processor 1201 is configured to determine hybrid automatic repeat request acknowledgement, HARQ-ACK, related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast physical downlink shared channel, PDSCH, of a terminal, and the HARQ-ACK related information includes at least one of:

Optionally, the DAI includes:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

alternatively, the first and second electrodes may be,

Optionally, the transceiver 1202 is further configured to:

and receiving HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.

The network device may enable the terminal to obtain the HARQ-ACK related information. And the terminal can also support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.

Wherein the transceiver 1202 is configured to receive and transmit data under control of the processor 1201, the transceiver 1202 comprising at least two antenna ports.

In fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking one or more processors, represented by the processor 1201, and memory, represented by the memory 1203. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1202 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1204 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1203 may store data used by the processor 1201 in performing operations.

Preferably, an embodiment of the present invention further provides a network device, which includes a processor 1201, a memory 1203, and a program or an instruction stored in the memory 1203 and executable on the processor 1201, where the program or the instruction is executed by the processor 1201 to implement each process of the above-mentioned information determining method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned information obtaining method or the information determining method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the terminal or the network device in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the information acquisition method or the information determination method, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. An information acquisition method is applied to a terminal, and is characterized by comprising the following steps:

obtaining HARQ-ACK related information of hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast Physical Downlink Shared Channel (PDSCH) of the terminal, and the HARQ-ACK related information comprises the following steps:

the terminal detects first HARQ-ACK related information included in the DCI; alternatively, the first and second electrodes may be,

the terminal detects first HARQ-ACK related information included in the unicast DCI and second HARQ-ACK related information which is acquired in advance or determined implicitly by the terminal.

2. The method of claim 1, wherein the unicast DCI comprises: scheduling multicast DCI for the multicast PDSCH followed by a first unicast DCI detected by the terminal.

3. The method of claim 1, wherein the first HARQ-ACK related information comprises at least one of:

4. The method of claim 3, wherein the DAI comprises:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

5. The method of claim 4, wherein the unicast DCI comprises DCI scheduling the PUSCH if HARQ-ACK multiplexing of at least one multicast PDSCH for the terminal is transmitted on a Physical Uplink Shared Channel (PUSCH).

6. The method of claim 5, wherein in case that the multicast PDSCH for the terminal corresponds to Q different radio network temporary identities RNTIs:

7. The method of claim 4 or 5, wherein the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.

8. The method of claim 1, wherein the second HARQ-ACK related information pre-acquired by the terminal comprises: the high-layer signaling configures second HARQ-ACK related information or predefined second HARQ-ACK related information;

alternatively, the first and second electrodes may be,

9. The method of claim 1 or 8, wherein the second HARQ-ACK related information comprises: priority of HARQ-ACK of the multicast PDSCH.

10. The method of claim 1, wherein the method further comprises:

11. The method of claim 1, wherein multicast DCI scheduling the multicast PDSCH does not include the HARQ-ACK related information.

12. An information determination method applied to a network device, the method comprising:

determining HARQ-ACK related information for a hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast Physical Downlink Shared Channel (PDSCH) of a terminal, and the HARQ-ACK related information comprises the following steps:

first HARQ-ACK related information included in unicast downlink control information DCI sent to the terminal; alternatively, the first and second electrodes may be,

the unicast DCI detected by the terminal comprises first HARQ-ACK related information and second HARQ-ACK related information which is acquired by the network equipment in advance or determined implicitly.

13. The method of claim 12, wherein the unicast DCI comprises: and scheduling the multicast DCI of the multicast PDSCH and then sending the multicast DCI to a first unicast DCI of the terminal.

14. The method of claim 12, wherein the first HARQ-ACK related information comprises at least one of:

15. The method of claim 14, wherein the DAI comprises:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

16. The method of claim 15, wherein HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a physical uplink shared channel, PUSCH, then the unicast DCI comprises DCI scheduling the PUSCH.

17. The method of claim 16, wherein in case that the multicast PDSCH of the terminal corresponds to Q different radio network temporary identities RNTI:

q is an integer greater than or equal to 1, or an integer greater than or equal to 1 and less than or equal to a preset threshold.

18. The method of claim 15, wherein the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.

19. The method of claim 12, wherein the second HARQ-ACK related information pre-acquired by the network device comprises: the high-layer signaling configures second HARQ-ACK related information or predefined second HARQ-ACK related information;

alternatively, the first and second liquid crystal display panels may be,

the second HARQ-ACK related information pre-implicitly determined by the network device includes: and second HARQ-ACK related information determined according to the service type or service priority of the multicast PDSCH.

20. The method of claim 12 or 19, wherein the second HARQ-ACK related information comprises: priority of HARQ-ACK of the multicast PDSCH.

21. The method of claim 12, wherein the method further comprises:

22. The method of claim 12, wherein multicast DCI scheduling the multicast PDSCH does not include the HARQ-ACK related information.

23. An information acquisition apparatus characterized by comprising:

an obtaining module, configured to obtain HARQ-ACK related information for hybrid automatic repeat request acknowledgement (HARQ-ACK), where the HARQ-ACK related information is used for HARQ-ACK feedback of a multicast Physical Downlink Shared Channel (PDSCH) of a terminal, and the HARQ-ACK related information includes:

24. The apparatus of claim 23, wherein the first HARQ-ACK related information comprises at least one of:

25. The apparatus of claim 24, wherein the DAI comprises:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

26. The apparatus of claim 25, wherein the unicast DCI comprises a DCI scheduling the PUSCH if HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a physical uplink shared channel, PUSCH.

27. An information determining apparatus, comprising:

a determining module, configured to determine HARQ-ACK related information for determining HARQ-ACK feedback of a multicast physical downlink shared channel PDSCH of a terminal, where the HARQ-ACK related information includes:

the terminal detects first HARQ-ACK related information included in the unicast DCI and second HARQ-ACK related information which is acquired in advance or determined implicitly by the network equipment.

28. The apparatus of claim 27, wherein the first HARQ-ACK related information comprises at least one of:

29. The apparatus of claim 28, wherein the DAI comprises:

A third bit to jointly indicate a unicast PDSCH and a multicast PDSCH.

30. The apparatus of claim 29, wherein the unicast DCI comprises a DCI scheduling the PUSCH if HARQ-ACK multiplexing of at least one multicast PDSCH of the terminal is transmitted on a physical uplink shared channel, PUSCH.

31. A terminal, comprising: memory, processor and a program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps in the information acquisition method according to any one of claims 1 to 11.

32. A network device, comprising: memory, processor and program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps in the information determination method according to any one of claims 12 to 22.

33. A readable storage medium, characterized in that a program or instructions are stored thereon, which when executed by a processor, implement the steps in the information acquisition method according to any one of claims 1 to 11, or which when executed by a processor, implement the steps in the information determination method according to any one of claims 12 to 22.