CN110035524B

CN110035524B - Communication method and uplink resource determination method

Info

Publication number: CN110035524B
Application number: CN201810032509.2A
Authority: CN
Inventors: 王达; 薛祎凡; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-12-14
Anticipated expiration: 2038-01-12
Also published as: CN110035524A; WO2019137011A1

Abstract

The invention discloses a communication method and an uplink resource determining method, which are used for solving the problems that in the prior art, due to PUCCH resource errors determined by terminal equipment, PUCCH resource conflicts used by other terminal equipment are caused, and network equipment can not receive ACK/NACK responses fed back by the terminal equipment. The communication method comprises the following steps: the network equipment sends downlink information to the terminal equipment on the N downlink resources; the N downlink resources include at least two first downlink resources, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resources are downlink control channel resources and/or downlink shared channel resources; and the network equipment receives UCI sent by the terminal equipment on the uplink resource, wherein N is a positive integer greater than 1.

Description

Communication method and uplink resource determination method

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication method and an uplink resource determination method.

Background

With the development of wireless communication technology and the increase of traffic, the spectrum resources of wireless communication systems are becoming increasingly scarce, which requires that the wireless communication systems need to improve the spectrum utilization, and thus Time Division Duplexing (TDD) technology and Carrier Aggregation (CA) technology are in use.

In TDD technology and CA technology, there is a case where a terminal device needs to feed back multiple ACK/NACK responses corresponding to multiple downlink data sent by a network device in the same Uplink Control Information (UCI), as shown in fig. 1, which is an example of feeding back ACK/NACK responses of multiple downlink data in the same UCI in TDD technology, in fig. 1, the network device indicates 3 Physical Downlink Shared Channel (PDSCH) resources to the terminal device through 3 DCIs sent in 3 Physical Downlink Control Channel (PDCCH) resources, and after receiving the 3 DCIs, the terminal device determines an uplink control channel (UCI) for sending the network device configured for the terminal device according to a target DCI predetermined with the network device and PDCCH resources occupied by the target DCI, for example, a last DCI sent by a base station and PDCCH resources occupied by the last DCI, and determines the uplink control channel (UCI) for sending the downlink data configured for the terminal device by the network device according to the target DCI and the PDCCH resources occupied by the target DCI channel, PUCCH) resources. In this way, after the terminal device receives the downlink data through the 3 PDSCH resources, the terminal device feeds back the reception condition of the downlink data on the PUCCH resource.

However, during the communication, there may be a case where the DCI transmitted by the network device to the terminal device is lost or not received by the terminal device, for example, the network device transmits 3 DCIs to the terminal device, but during the transmission, if the 3rd DCI is lost, the terminal device only receives the 1 st DCI and the 2 nd DCI. Since the terminal device does not know that the 3rd DCI is lost, the terminal device determines the PUCCH resource for transmitting UCI according to the last received DCI, that is, the 2 nd DCI transmitted by the network device, and the PDCCH resource occupied by the DCI.

Since the last DCI received by the terminal device is not the last DCI transmitted by the network device, then the PDCCH resource occupied by the last DCI received by the terminal device is also not the last PDCCH resource scheduled by the network device, and the PUCCH resource for transmitting UCI determined by the terminal device is not the PUCCH resource actually indicated by the network device to the terminal device for transmitting UCI, thereby causing a determination error of the PUCCH resource, resulting in a collision with PUCCH resources used by other terminal devices, and the network device may not receive ACK/NACK response fed back by the terminal device.

Disclosure of Invention

The embodiment of the application provides a communication method and an uplink resource determining method, which are used for solving the problems that in the prior art, due to PUCCH resource errors determined by terminal equipment, PUCCH resource conflicts used by other terminal equipment, and network equipment may not receive ACK/NACK responses fed back by the terminal equipment.

Embodiments provided herein include any of:

in a first aspect, an embodiment of the present application provides a communication method, including any one of the following embodiments 1 to 4;

in a second aspect, an embodiment of the present application provides a method for determining uplink resources, including any one of the following embodiments 5 to 8;

in a third aspect, an embodiment of the present application provides another uplink resource determining method, including any one of the following embodiments 9 to 12;

in a fourth aspect, an embodiment of the present application provides a network device, including any one of the following embodiments 13 to 16;

in a fifth aspect, an embodiment of the present application provides a terminal device, including any one of the following embodiments 17 to 20;

in a sixth aspect, an embodiment of the present application provides another terminal device, including any one of the following embodiments 21 to 24;

in a seventh aspect, an embodiment of the present application provides another network device, including any one of the following 25 to 28;

in an eighth aspect, an embodiment of the present application provides another terminal device, including any one of the following embodiments 29 to 32;

in a ninth aspect, an embodiment of the present application provides another terminal device, including any one of the following embodiments 33 to 36;

in a tenth aspect, embodiments of the present application provide a computer-readable storage medium, including embodiment 37 as follows;

in an eleventh aspect, embodiments of the present application provide a computer program product containing instructions, including the following embodiment 38;

in a twelfth aspect, an embodiment of the present application provides a data transmission chip, including the following embodiment 39;

in a thirteenth aspect, an embodiment of the present application provides a communication system, including the following embodiment 40;

in a fourteenth aspect, embodiments of the present application provide another apparatus, including embodiment 41 below;

in a fifteenth aspect, embodiments of the present application provide another apparatus, comprising the following embodiment 42;

in a sixteenth aspect, embodiments of the present application provide another apparatus, comprising the following embodiment 43;

in a seventeenth aspect, embodiments of the present application provide another apparatus, including embodiment 44 as follows.

1. A method of communication, comprising:

the network equipment sends downlink information to the terminal equipment on the N downlink resources; the N downlink resources include at least two first downlink resources, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resources are downlink control channel resources and/or downlink shared channel resources;

and the network equipment receives UCI sent by the terminal equipment on the uplink resource, wherein N is a positive integer greater than 1.

In this embodiment, the network device uses at least two first downlink resources to implicitly indicate the uplink resources used by the terminal device to send the UCI, so that when the terminal device receives any one of the downlink information on the at least two first downlink resources, the uplink resources used to send the UCI are determined according to the downlink resources occupied by the received downlink information.

2. The method according to embodiment 1, wherein the uplink resources used by the terminal device for transmitting UCI determined by each of the at least two first downlink resources are the same.

3. The method according to any of embodiments 1-2, wherein the at least two first downlink resources comprise:

a first downlink resource of the N downlink resources and a last downlink resource of the N downlink resources; or

A first downlink resource of the N downlink resources and a second downlink resource of the N downlink resources; or

The last two downlink resources of the N downlink resources; or

Any three downlink resources of the N downlink resources.

In this embodiment of the present application, the at least two first downlink resources may be multiple combinations of the N downlink resources, so that the network device may configure the at least two first downlink resources according to actual usage requirements, thereby improving flexibility of the network device.

4. The method according to any of embodiments 1-3, wherein the resources of the downlink control channel include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the resources of the downlink shared channel include:

frequency domain resources of the downlink shared channel,

Time domain resources of the downlink shared channel,

Code domain resources of the downlink shared channel,

One or more port numbers of the downlink shared channel.

5. An uplink resource determining method, comprising:

the terminal equipment receives K downlink information sent by the network equipment;

if the K pieces of downlink information include first downlink information sent by the network device, the terminal device determines an uplink resource for sending uplink control information UCI according to a downlink resource occupied by the first downlink information;

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the terminal device determines an uplink resource for sending the UCI according to the downlink resource occupied by the downlink information received last in the K pieces of downlink information;

the downlink resource is a downlink control channel resource and/or a downlink shared channel resource, and K is a positive integer greater than or equal to zero.

In the embodiment of the present application, the terminal device may determine the uplink resource used for sending UCI using the downlink resource occupied by the first downlink information sent by the network device or the downlink resource occupied by the last downlink information received by the terminal device itself, so that the terminal device may determine the uplink resource actually indicated by the network device when determining that any one of the two downlink information is received.

6. The method of embodiment 5, wherein the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

7. The method of embodiment 5, further comprising:

if the first uplink resource is different from the second uplink resource, the terminal device determines to lose the last downlink information sent by the network device;

the first uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received penultimate downlink information and used for sending the UCI, and the second uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received last downlink information and used for sending the UCI.

In this embodiment, the terminal device may determine whether the last downlink information sent by the network device is lost according to downlink resources respectively occupied by the received penultimate downlink information and the last downlink information, so that when the terminal device sends UCI, a NACK response to the lost last downlink data may be added, and thus the base station may determine that the terminal device has lost the last downlink data without blind decoding when receiving the UCI.

8. The method of embodiment 5, further comprising:

if the third uplink resource is different from the fourth uplink resource, the terminal device determines to lose the last downlink information sent by the network device;

the third uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received first downlink information and used for sending the UCI, and the fourth uplink control channel resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received last downlink information and used for sending the UCI.

In this embodiment, the terminal device may determine whether the last downlink information sent by the network device is lost according to downlink resources respectively occupied by the received first downlink information and the last downlink information, so that when the terminal device sends UCI, NACK response to the lost last downlink data may be increased, and thus when the base station receives the UCI, the base station may determine that the terminal device has lost the last downlink data without blind decoding.

9. An uplink resource determining method, comprising:

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the terminal device determines an uplink resource for sending the UCI according to the downlink resource occupied by the second piece of downlink information sent by the network device and received in the K pieces of downlink information;

In this embodiment, the terminal device may determine the uplink resource used for transmitting UCI using the downlink resource occupied by the first downlink information sent by the network device or the downlink resource occupied by the second downlink information sent by the network device, so that the terminal device may determine the uplink resource actually indicated by the network device when determining to receive any one of the two downlink information.

10. The method of embodiment 9, wherein the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

11. The method of embodiment 9, further comprising:

12. The method of embodiment 9, further comprising:

13. A network device comprising a transmitter, a processor, and a receiver, wherein:

the transmitter transmits downlink information to the terminal equipment on N downlink resources under the control of the processor; the N downlink resources include at least two first downlink resources, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resources are downlink control channel resources and/or downlink shared channel resources;

and the receiver receives UCI sent by the terminal equipment on the uplink resource under the control of the processor.

14. The network device according to embodiment 13, wherein the uplink resources used by the terminal device for sending UCI determined by each of the at least two first downlink resources are the same.

15. The network device of any of embodiments 13-14, wherein the at least two first downlink resources comprise:

The last two downlink resources of the N downlink resources; or

Any three downlink resources of the N downlink resources.

16. The network device according to any of embodiments 13-15, wherein the resources of the downlink control channel include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the resources of the downlink shared channel include:

frequency domain resources of the downlink shared channel,

Time domain resources of the downlink shared channel,

Code domain resources of the downlink shared channel,

One or more port numbers of the downlink shared channel.

17. A terminal device, comprising a receiver and a processor, wherein:

the receiver receives K downlink messages sent by the network equipment under the control of the processor;

if the K pieces of downlink information include first downlink information sent by the network device, the processor determines uplink resources for sending uplink control information UCI according to downlink resources occupied by the first downlink information;

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the processor determines an uplink resource for sending the UCI according to a downlink resource occupied by the downlink information received last in the K pieces of downlink information;

the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.

18. The terminal device according to embodiment 17, wherein the downlink control channel resource includes:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

19. The terminal device of embodiment 17, wherein the processor is further configured to:

if the first uplink resource is different from the second uplink resource, the processor determines that the last downlink information sent by the network equipment is lost;

the first uplink resource is an uplink resource which is determined by the processor according to a downlink resource occupied by the received penultimate downlink information and used for sending the UCI, and the second uplink resource is an uplink resource which is determined by the processor according to a downlink resource occupied by the received last downlink information and used for sending the UCI.

20. The terminal device of embodiment 17, wherein the processor is further configured to:

if the third uplink resource is different from the fourth uplink resource, the processor determines to lose the last downlink information sent by the network device;

the third uplink resource is an uplink resource which is determined by the processor according to the downlink resource occupied by the received first downlink information and used for sending the UCI, and the fourth uplink control channel resource is an uplink resource which is determined by the processor according to the downlink resource occupied by the received last downlink information and used for sending the UCI.

21. A terminal device, comprising a receiver and a processor, wherein:

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the processor determines an uplink resource for sending the UCI according to the downlink resource occupied by the second piece of downlink information sent by the network device and received from the K pieces of downlink information;

22. The terminal device according to embodiment 21, wherein the downlink control channel resource includes:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

23. The terminal device of embodiment 21, wherein the processor is further configured to:

24. The terminal device of embodiment 21, wherein the processor is further configured to:

25. A network device, comprising:

a sending module, configured to send downlink information to the terminal device on the N downlink resources; the N downlink resources include at least two first downlink resources, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resources are downlink control channel resources and/or downlink shared channel resources;

and the receiving module is used for receiving the UCI sent by the terminal equipment on the uplink resources.

26. The network device according to embodiment 25, wherein the uplink resources used by the terminal device for sending UCI determined by each of the at least two first downlink resources are the same.

27. The network device of any of embodiments 25-26, wherein the at least two first downlink resources comprise:

The last two downlink resources of the N downlink resources; or

Any three downlink resources of the N downlink resources.

28. The network device of any of embodiments 25-27, wherein the resources of the downlink control channel comprise:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the resources of the downlink shared channel include:

frequency domain resources of the downlink shared channel,

Time domain resources of the downlink shared channel,

Code domain resources of the downlink shared channel,

One or more port numbers of the downlink shared channel.

29. A terminal device, comprising:

the receiving module is used for receiving K downlink messages sent by the network equipment;

a determining module, configured to determine, if the K pieces of downlink information include first downlink information sent by the network device, an uplink resource used for sending uplink control information UCI according to a downlink resource occupied by the first downlink information; if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, determining an uplink resource for sending the UCI according to a downlink resource occupied by the downlink information received last in the K pieces of downlink information;

30. The terminal device according to embodiment 29, wherein the downlink control channel resource includes:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

31. The terminal device of embodiment 29, wherein the determining module is further configured to:

if the first uplink resource is different from the second uplink resource, determining to lose the last downlink information sent by the network equipment;

the first uplink resource is an uplink resource which is determined by the determining module according to the downlink resource occupied by the received penultimate downlink information and used for sending the UCI, and the second uplink resource is an uplink resource which is determined by the determining module according to the downlink resource occupied by the received last downlink information and used for sending the UCI.

32. The terminal device of embodiment 29, wherein the determining module is further configured to:

if the third uplink resource is different from the fourth uplink resource, determining to lose the last downlink information sent by the network equipment;

the third uplink resource is the uplink resource which is determined by the determining module according to the downlink resource occupied by the received first downlink information and is used for sending the UCI, and the fourth uplink control channel resource is the uplink resource which is determined by the determining module according to the downlink resource occupied by the received last downlink information and is used for sending the UCI.

33. A terminal device, comprising:

a determining module, configured to determine, if the K pieces of downlink information include first downlink information sent by the network device, an uplink resource used for sending uplink control information UCI according to a downlink resource occupied by the first downlink information; if the K pieces of downlink information do not include the first downlink information sent by the network device, determining an uplink resource for sending the UCI according to the downlink resource occupied by the second downlink information sent by the network device and received in the K pieces of downlink information;

34. The terminal device according to embodiment 33, wherein the downlink control channel resource includes:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

35. The terminal device of embodiment 33, wherein the determining module is further configured to:

36. The terminal device of embodiment 33, wherein the determining module is further configured to:

37. A computer storage medium having stored thereon instructions that, when executed on a computer, cause the computer to perform the method of any of embodiments 1-4 or 5-8 or 9-12.

38. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method according to any of embodiments 1-4 or 5-8 or 9-12.

39. A chip for data transmission, wherein the chip is connected to a memory for reading and executing a software program stored in the memory to implement the method according to any of embodiments 1-4, 5-8 or 9-12.

40. A communication system comprising a network device and a terminal device as in any of embodiments 13-36.

41. A network device, characterized in that the network device is configured to perform the method according to any of embodiments 1-4.

42. A terminal device, characterized in that the terminal device is configured to perform the method according to any of embodiments 5-8 or 9-12.

43. A network device, characterized in that the network device comprises: at least one processor configured to perform the method of any one of embodiments 1-4; and a memory coupled with the at least one processor.

44. A terminal device, characterized in that the terminal device comprises: at least one processor configured to perform the method of any one of embodiments 5-8 or 9-12; and a memory coupled with the at least one processor.

Drawings

Fig. 1 is a schematic diagram of PDSCH resources corresponding to 3 PDCCH resources scheduled by a terminal device to a network device in the prior art;

fig. 2 is an application scenario of the embodiment of the present application;

fig. 3 is a flowchart of a method for determining PUCCH resources for transmitting UCI by a terminal device in the prior art;

fig. 4 is a schematic diagram of 4 PUCCH resource sets configured by a network device to a terminal device in the prior art;

fig. 5 is a schematic diagram of CCEs occupied by each PDCCH resource in the prior art;

fig. 6 is a flowchart of an example of a communication method and an uplink resource determining method according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating a base station scheduling multiple PDCCH resources in a CA manner in an embodiment of the present application;

fig. 8 is a flowchart of another example of a communication method and an uplink resource determining method according to an embodiment of the present application;

fig. 9 is a flowchart of another example of a communication method and an uplink resource determining method according to an embodiment of the present application;

fig. 10 is a block diagram of a network device according to an embodiment of the present application;

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

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

fig. 13 is a block diagram of another network device according to an embodiment of the present application;

fig. 14 is a block diagram of another terminal device according to an embodiment of the present disclosure;

fig. 15 is a block diagram of another network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: new Radio (NR) systems, wireless fidelity (wifi), Worldwide Interoperability for Microwave Access (WiMAX), Global System for Mobile communication (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) systems, Long Term Evolution (Advanced) systems, LTE-a) systems, Universal Mobile Telecommunications System (UMTS), and third Generation Partnership Project (3 rd Generation Partnership Project, 3GPP) related Mobile communication systems, and Fifth Generation communication systems, such as The 3rd Generation Partnership Project (3 GPP) and The Fifth Generation Mobile communication (GPP) systems.

In addition, the communication system may also be applied to future-oriented communication technologies, and the system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not form a limitation on the technical solution provided in the embodiment of the present application.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) The Network device, which may also be referred to as an Access Network device or a Base Station, may be a gnb (gnode b), may be a common Base Station (e.g., a Base Station (NodeB, NB) in a WCDMA system, an evolved node b (eNB, or eNodeB) in an LTE system, a Base Station (BTS) in GSM or CDMA), may be a New Radio controller (NR controller), a Centralized Network element (Centralized Unit), a New Radio Base Station, a Radio remote module, a micro Base Station, a Distributed Network element (Distributed Unit), a Reception Point (TRP) or a Transmission Point (TP, TP), or a Radio controller in a Cloud Radio Access Network (Cloud Radio Access Network, CRAN) scenario, or may be a relay Station, an Access Point (G) in a relay Station, a Network device, and a future evolved node b in a future PLMN or a future Network device in a vehicle-mounted Network (PLMN, or a future evolved node b) Network device in a vehicle-mounted Network (PLMN, or a vehicle-mounted Network device in a future PLMN, or a vehicle-mounted Network device Any other wireless access device, but the application embodiments are not so limited.

(2) The terminal device may be a wireless terminal device or a wired terminal device. A wireless terminal device may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers having mobile terminal devices, for example, portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless Terminal may also be referred to as a system, a Subscriber Unit (SU), a Subscriber Station (SS), a Mobile Station (MB), a Mobile Station (Mobile), a Remote Station (RS), an Access Point (AP), a Remote Terminal (RT), an Access Terminal (AT), a User Terminal (UT), a User Agent (UA), a Terminal Device (UD), or a User Equipment (UE).

(3) Downlink control channel: refers to a channel for carrying Downlink Control Information (DCI). For example, a Physical Downlink Control Channel (PDCCH) in LTE, or a machine communication physical downlink control channel (MPDCCH), or a Narrowband Physical Downlink Control Channel (NPDCCH), or an Enhanced Physical Downlink Control Channel (EPDCCH), or a Physical Downlink Control Channel (PDCCH) in NR.

(4) An uplink control channel: refers to a channel for carrying Uplink Control Information (UCI). For example, a Physical Uplink Control Channel (PUCCH) in LTE, or a machine communication physical uplink control channel (MTC physical uplink control channel, mpcch), or a Narrowband Physical Uplink Control Channel (NPUCCH), or a Physical Uplink Control Channel (PUCCH) in NR.

(5) Control Channel Element (CCE): the frequency domain resource of the downlink control channel is composed of CCEs, that is, the frequency domain resource of the downlink control channel includes several CCEs. In a Long Term Evolution (LTE) system, each CCE consists of 9 Resource Element Groups (REGs), each REG consisting of 4 REs. In the NR system, each CCE is composed of 6 Resource Element Groups (REGs), each REG is composed of 1 RB, and 1 RB contains 12 REs. As the communication system evolves, other definitions of CCEs may be employed, and are not limited herein.

(6) Uplink control channel resources: including the format of the PUCCH, time-frequency resources, etc.

(7) Aggregation level: indicates the number of CCEs constituting one PDCCH channel. In the NR system, there are 5 aggregation levels, L being 1,2,4,8, and 16, that is, if an aggregation level L of a certain PDCCH channel is 4, it means that the PDCCH channel is composed of 4 consecutive CCEs. It should be noted that "continuous" as used herein means continuous in the logical sense, not continuous on the physical REG.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", "third", and "fourth", etc., for distinguishing between a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

Please refer to fig. 2, which is a schematic diagram of a possible network architecture according to an embodiment of the present application. The wireless communication system in fig. 2 may include a terminal device and a base station. The base station is used for providing communication service for the terminal equipment and accessing a core network, the terminal accesses the network by searching synchronous signals, broadcast signals and the like sent by the base station, and downlink data and/or uplink data are transmitted between the base station and the terminal equipment.

It should be noted that, in the scenario shown in fig. 2, only the interaction between one base station and one terminal device is taken as an example for description, and the application scenario of the present application is not limited. In a practical network architecture, multiple base stations and multiple terminals may be included. For example, one terminal device may perform data transmission with only one base station, or may perform data transmission with a plurality of base stations. One base station may perform data transmission with one terminal device, or may perform data transmission with a plurality of terminal devices. This is not a particular limitation of the present application.

In the prior art, please refer to fig. 3, a terminal device determines a PUCCH resource for transmitting UCI according to DCI transmitted by a network device and a PDCCH resource occupied by the DCI as follows. The invention mainly considers the situation that the terminal equipment receives a plurality of DCIs and feeds back the receiving situation of the downlink data indicated by the DCIs on the same uplink PUCCH resource.

S301: the network device configures a plurality of PUCCH resource sets to the terminal device.

The network device configures a plurality of PUCCH resources, typically 4-8 PUCCH resources, to the terminal device through higher layer signaling, for example, RRC signaling, where PUCCH Resource 1 indicates to occupy Physical Resource Block 1 (PRB) and symbol 1 and transmit UCI using PUCCH format0, PUCCH Resource 2 indicates to occupy PRB2 and symbol 2, symbol 3, symbol 4 and symbol 5, and transmit UCI using PUCCH format1, and the like. The plurality of PUCCH resources are divided into 4 PUCCH resource sets according to the number of bits (2 bits) included in a PUCCH resource indicator (PUCCH resource indicator) field in the DCI, and each PUCCH resource set includes two PUCCH resources, as shown in fig. 4, taking an example in which 8 PUCCH resources are configured for a terminal device by a network device.

S302: the network equipment determines PUCCH resources used by the terminal equipment for transmitting UCI.

The network equipment determines one PUCCH resource from the plurality of PUCCH resources for the terminal equipment to send the PUCCH resource of the UCI. For example, the network device determines that the first PUCCH resource in PUCCH resource set 01 is a PUCCH resource for transmitting UCI by the terminal device.

S303: the network device transmits a plurality of DCIs to the terminal device on a plurality of PDCCH resources.

The network equipment sends DCI to the terminal equipment on a plurality of PDCCH resources, so as to send downlink data to the terminal equipment through the PDSCH resource indicated by the DCI, and indicate the PUCCH resource for sending UCI to the terminal equipment through the DCI and the PDCCH resource occupied by the last DCI. Each PDCCH resource of the plurality of PDCCH resources is composed of control channel elements, CCEs. As shown in fig. 5, assuming that the bandwidth of the control channel of the entire wireless communication system can be divided into 16 CCEs, namely CCE0-CCE15, and assuming that the network device schedules 3 PDCCH resources, the first PDCCH resource may consist of CCE0 and CCE1, the second PDCCH resource may consist of CCE2, and the third PDCCH resource may consist of CCE3 and CCE4, and the network device transmits 3 DCIs on the 3 PDCCH resources. Each of the 3 DCIs includes, in addition to information of the indicated PDSCH resource, uplink control channel resource indication information (PUCCH resource indicator) including 2 bits, the indication information is used to indicate to the terminal device which PUCCH resource set of 4 PUCCH resource sets configured by the network device to use, and a value of the indication information corresponds to a sequence number of the PUCCH resource set, for example, if the indication information is 01, the PUCCH resource set 01 is indicated to be used. The terminal device determines the PUCCH resource for transmitting UCI according to the PDCCH resource occupied by the last DCI according to the following formula:

wherein r is a sequence number of a PUCCH resource for transmitting UCI in the PUCCH resource set 01, and since each PUCCH resource set includes 1 or 2 PUCCH resources, for example, the network device configures 8 PUCCH resources to the terminal device, there are 2 PUCCH resources in each PUCCH resource set; the network device configures less than 8 PUCCH resources for the terminal device, and some PUCCH resource sets only contain 1 PUCCH resource, so that the value of the sequence number is 0 or 1; m is the number of PUCCH resources included in the PUCCH resource set, and is 1 or 2, L is the aggregation level of the PDCCH occupied by the last DCI, and may be 1,2,4,8,16, and C is the starting CCE number of the PDCCH resource occupied by the last DCI. If the network device schedules 3 PDCCH resources, the PDCCH resource occupied by the last DCI is the third PDCCH resource, and in order to enable the terminal device to determine that the first PUCCH resource in the PUCCH resource set 01 is used, the network device controls the ratio of the starting CCE of the third PDCCH resource to the aggregation level of the PDCCH to be 0 after performing modulo operation on M, so that if the network device controls the aggregation level of the third PDCCH resource to be 2, the sequence number of the starting CCE of the third PDCCH resource may be any one of 0, 4,8, and 12, when the network device schedules the third PDCCH resource, the third PDCCH resource must be one of CCE0-CCE1, CCE4-CCE5, CCE8-CCE9, and CCE 12-13, and the network device may select one of the CCEs according to the actual situation, for example, determine that the third PDCCH resource is CCE0-CCE 1. However, there is no limitation on the initial CCE sequence numbers and aggregation levels of the first PDCCH resource and the second PDCCH resource, and the network device may configure arbitrarily, and then transmit 3 DCIs on the 3 PDCCH resources.

S304: the terminal device receives a plurality of DCIs on a plurality of PDCCH resources.

After receiving the DCI information, the terminal device determines a PUCCH resource for transmitting UCI according to the received DCI, a starting CCE sequence number of a PDCCH resource occupied by the last DCI, and an aggregation level of the PDCCH resource. The specific determination method is shown in formula (1), and is not described herein again.

However, due to the fact that the last DCI received by the terminal device is not the last DCI sent by the network device due to the loss in the transmission process, then the PDCCH resource occupied by the last DCI received by the terminal device is not the last PDCCH resource scheduled by the network device, and the PUCCH resource for sending UCI determined by the terminal device is not the PUCCH resource actually indicated by the network device to the terminal device for sending UCI, which causes an error in determination of the PUCCH resource, and conflicts with the uplink resource for sending UCI by other terminal devices, and results in that the network device may not receive the ACK/NACK response fed back by the terminal device or receive the erroneous ACK/NACK response.

In view of this, an embodiment of the present application provides a method for determining uplink resources, where the method includes: the network equipment sends downlink information to the terminal equipment on the N downlink resources; the N downlink resources include at least two first downlink resources capable of determining an uplink resource used by the terminal device to send uplink control information UCI, where the at least two first downlink resources are both used to determine the uplink resource, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resource is a downlink control channel resource and/or a downlink shared channel resource; if at least two first downlink resources are downlink resources occupied by first downlink information sent by network equipment and downlink resources occupied by last downlink information sent by the network equipment, when the terminal equipment receives K downlink information sent by the network equipment, if the K downlink information contains the first downlink information sent by the network equipment, the terminal equipment determines uplink resources for sending Uplink Control Information (UCI) according to the downlink resources occupied by the first downlink information, otherwise, the terminal equipment determines the uplink resources for sending the UCI according to the downlink resources occupied by the last downlink information received in the K downlink information; if the at least two first downlink resources are downlink resources occupied by the first downlink information sent by the network device and downlink resources occupied by the second downlink information sent by the network device, when the terminal device receives the K pieces of downlink information sent by the network device, if the K pieces of downlink information include the first piece of downlink information sent by the network device, the terminal equipment determines the uplink resource for sending the uplink control information UCI according to the downlink resource occupied by the first downlink information, otherwise, the terminal equipment determines an uplink resource for transmitting UCI according to the downlink resource occupied by the second downlink information transmitted by the network equipment and received in the K downlink information, after determining the uplink resource for transmitting the UCI, the terminal device transmits the UCI on the uplink resource, so that the network device receives the UCI transmitted by the terminal device on the uplink resource.

In the above technical solution, the network device first uses at least two first downlink resources to implicitly indicate the uplink resources used by the terminal device to send UCI, so that when the terminal device receives any one of the downlink information on the at least two first downlink resources, the uplink resources used to send UCI are determined according to the downlink resources occupied by the received downlink information.

The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments of the present application. In the following description process, the technical solution provided in the embodiment of the present application is applied to the application scenario shown in fig. 2, where a terminal device is taken as a UE and a network device is taken as a base station as an example.

Referring to fig. 6, an embodiment of the present application provides a communication method and a method for determining uplink resources, where a flow of the method is described as follows:

s601: and the base station sends downlink information to the terminal equipment on the N downlink resources.

In this embodiment of the present application, the downlink resource may be a PDCCH resource and/or a PDSCH resource, and correspondingly, the downlink information may be DCI and/or downlink data, that is, the base station may send DCI to the UE on the PDCCH resource, may send downlink data to the UE on the PDSCH resource, or the base station first sends DCI to the UE through the PDCCH resource and sends downlink data to the UE through the PDSCH resource, or the base station simultaneously schedules the PDCCH resource to send DCI to the UE and schedules the PDSCH resource to send downlink data to the UE at different frequency domain positions. Of course, the downlink resource may also be an MPDCCH resource or the like, and in the embodiment of the present application, the downlink resource is described as a PDCCH resource and a PDSCH resource.

The base station communicates with the UE by scheduling PDCCH resources and PDSCH resources. For example, the UE may communicate in a Time Division Duplex (TDD) manner or a Carrier Aggregation (CA) manner. The following will describe two operation modes by taking the base station scheduling PDCCH resource to communicate with the UE as an example:

1) TDD mode:

the base station may schedule a plurality of PDCCH resources located at different or the same frequency domain locations at different time domain locations, and transmit DCI information to the UE. As shown in fig. 5, the base station schedules 3 PDCCH resources, where PDCCH resource 1 corresponds to slot (slot)1 and frequency 1, PDCCH resource 2 corresponds to slot2 and frequency 2, and PDCCH resource 3 corresponds to slot3 and frequency 3.

2) CA mode:

the base station may schedule a plurality of PDCCH resources located on different carriers at the same time domain position, and send DCI information to the UE. As shown in fig. 7, the base station schedules 3 PDCCH resources, where PDCCH resource 1 is located on carrier 1, and the PDCCH resources occupied on carrier 1 are CCE0-CCE1, PDCCH resource 2 is located on carrier 2, and the PDCCH resources occupied on carrier 2 are CCE4-CCE6, PDCCH resource 3 corresponds to carrier 3, and the PDCCH resource occupied on carrier 3 is CCE 9. The CCE numbers of the carriers may be independent from each other, that is, carrier 1 corresponds to 9 CCEs, the CCE number of PDCCH resource 1 is the number of 9 CCEs of carrier 1, and the CCE number of PDCCH resource 2 is the number of a plurality of CCEs of carrier 2.

When the base station transmits a plurality of DCI to the UE on a plurality of PDCCH resources and transmits downlink data to the UE on the PDSCH resources indicated by the DCI, the positions of the PDSCH resources are similar to those in fig. 5 and 7, and are not described herein again.

In this embodiment, the base station further needs to determine a plurality of PDCCH resources according to the resource indicated to the UE for sending the UCI, and/or determine a plurality of PDSCH resources according to the resource indicated to the UE for sending the UCI. For example, among the plurality of PDCCH resources, there are at least two first PDCCH resources, where the at least two first PDCCH resources are used to indicate, to the UE, an uplink resource for transmitting UCI implicitly, and the determined PUCCH resources for transmitting UCI by the UE are the same through the frequency domain resource of each PDCCH in the at least two first PDCCH, so that the base station needs to determine the at least two first PDCCH resources according to the indicated resource for transmitting UCI by the UE, and the base station may directly determine, according to the actual usage of the downlink resource, the PDCCH resources except for the at least two first PDCCH resources.

It should be noted that the base station or the UE may determine the uplink resource for the UE to transmit the UCI by using any one of the at least two first PDCCH resources, or may determine the uplink resource for the UE to transmit the UCI according to the at least two first PDCCH resources together, which is not limited in this application. Note that the names of the at least two first PDCCH resources are only used for convenience to distinguish from the other PDCCHs that are not used for determining the PUCCH resource among the N PDCCHs, and other names may be used for the at least two first PDCCH resources, which is not limited herein.

In one possible implementation, when the downlink resource is a PDCCH resource, the at least two first PDCCH resources include: a first PDCCH resource of the N PDCCH resources and a last PDCCH resource of the N PDCCH resources; or a first PDCCH resource of the N PDCCH resources and a second PDCCH resource of the N PDCCH resources; or the last two PDCCH resources of the N PDCCH resources; or any three PDCCH resources of the N PDCCH resources; or any i PDCCH resources of the N PDCCH resources, i being an integer greater than or equal to 2 and less than or equal to N. When the downlink resources are PDSCH resources, the at least two first PDSCH resources are similar to the at least two first PDCCH resources, which is not described herein again.

It should be noted that the at least two first PDCCH resources or the at least two first PDSCH resources may be pre-agreed by the base station with the UE, or specified by a standard, or statically/semi-statically configured, or may be indicated to the UE through indication information after the base station determines the at least two first PDCCH resources or the at least two first PDSCH resources, which is not limited in this embodiment of the application.

In one possible embodiment, the uplink resource may be a PUCCH resource. Of course, if the UCI may also be carried by other uplink resources, the uplink resources may also be other resources, which is not limited herein. For convenience of explanation, the uplink resource will be described with PUCCH resource as an example. The PUCCH resource may be configured by the base station for the UE in advance, as described in S301 in fig. 3, and is not described herein again.

In this embodiment of the present application, when the downlink resource is a PDCCH resource, the PDCCH resource includes: one or more of the frequency domain resource, the time domain resource, the code domain resource, and the port number of the PDCCH, that is, the base station may indicate, to the UE, the sequence number of the PUCCH resource for transmitting the UCI, through one or more of the frequency domain resource, the time domain resource, the code domain resource, and the port number of the PDCCH. Specifically, the sequence number of the PUCCH resource for transmitting UCI may be implicitly indicated according to a starting position, an ending position, or the number of the frequency domain resource and/or the time domain resource of the PDCCH. The way in which the base station implicitly indicates the sequence number of the PUCCH resource for transmitting UCI may be as shown in formula (1) in S303 in fig. 3, where when the base station determines the sequence number of the PUCCH resource for transmitting UCI by using any one of the PDCCH, the definition of M in formula (1) is not changed, the number of PUCCH resources included in the PUCCH resource set indicated by DCI transmitted in the PDCCH resource is changed, and the definitions of formulas C and L are changed according to the PDCCH resource used by the base station, and the parameter L may not be used in formula (1). For example, when the base station may indicate the sequence number of the PUCCH resource for transmitting UCI by the frequency domain resource hiding indication of the PDCCH, C is the starting CCE sequence number, or ending CCE sequence number, or CCE number of the frequency domain resource of the PDCCH, and L is the aggregation level of the PDCCH, or the parameter L may not be used in equation (1); when the base station can indicate the sequence number of the PUCCH resource for transmitting UCI through the time domain resource hiding of the PDCCH, C is a start symbol, or an end symbol, or the number of symbols of the time domain resource of the PDCCH, and at this time, the parameter L may not be used in the formula (1); when the base station can indicate the sequence number of the PUCCH resource for transmitting UCI through the code domain resource hiding indication of the PDCCH, C is the sequence identification of the code domain resource of the PDCCH, and the parameter L can not be used in the formula (1); when the base station indicates a sequence number of a PUCCH resource for transmitting UCI through port number hiding of the PDCCH, the calculation formula may become: r — Mod (Q, M), where Q is the port number of the PDCCH. When the base station indicates a sequence number of a PUCCH resource for transmitting UCI using multiple resource hiddends of the PDCCH, for example, the base station indicates a sequence number of a PUCCH resource for transmitting UCI using a frequency domain resource and a port number of the PDCCH, the calculation formula may be: r ═ Mod ((C/L) + Q, M), although other equations may be used, and are not limited herein.

When the downlink resource is a PDSCH resource, the PDSCH resource includes: one or more of frequency domain resources, time domain resources, code domain resources, and port numbers of the PDSCH. The specific implicit indication method is the same as the PDCCH resource, and is not described herein again.

It should be noted that the calculation formula for indicating the sequence number of the PUCCH resource and determining the sequence number of the PUCCH resource by each resource, which is used by the base station, may be predetermined by the base station and the UE in advance, or specified by a standard, or configured statically/semi-statically, or may be indicated to the UE by the base station, which is not limited herein.

The base station determines at least two PDCCH resources in the following two ways, and the base station may adopt any one of the following ways:

the first mode is as follows:

and the base station determines one PUCCH resource from the plurality of PUCCH resources and transmits the PUCCH resource of the UCI for the UE. For example, the first PUCCH resource in PUCCH resource set 01 is determined to be a PUCCH resource for UE to transmit UCI. If the base station indicates the sequence number of the PUCCH resource in the PUCCH resource set 01 through the frequency domain resource hiding of the PDCCH, the base station may determine the frequency domain resource starting CCE sequence number of each of the at least two PDCCHs and the aggregation level of each PDCCH by using the method in S303, so that the PUCCH resources for transmitting UCI by the UE determined by the frequency domain resource of each of the at least two PDCCHs are the same. Specifically, the calculation formula includes:

for example, the at least two PDCCH resources are the first PDCCH resource and the last PDCCH resource in the N PDCCH resources, and in order to implicitly indicate the first PUCCH resource in the PUCCH resource set 01 by the frequency domain resources of the first PDCCH and the last PDCCH, the frequency domain resource of the first PDCCH may be controlled to be CCE0-CCE1(L ═ 2), and the frequency domain resource of the last PDCCH may be controlled to be CCE2(L ═ 1).

The second mode is as follows:

the base station does not need to determine a PUCCH resource for the UE to transmit UCI from a plurality of PUCCH resources in advance, but determines the resources of other PDCCHs in the at least two PDCCHs through the first PDCCH resource in the at least two PDCCHs, so that the PUCCH resource for transmitting UCI determined by the frequency domain resource of each PDCCH in the at least two PDCCHs is the same. For example, the at least two PDCCH resources are a first PDCCH resource and a last PDCCH resource in the N PDCCH resources, the base station indicates a sequence number of the PUCCH resource in the PUCCH resource set 01 through the frequency domain resource hiding of the PDCCH, the base station may determine the frequency domain resource of the first PDCCH according to a normal scheduling algorithm, for example, the frequency domain resource of the first PDCCH is CCE2-CCE3(L ═ 2), then, the base station determines that the sequence number of the PUCCH resource implicitly indicated by the base station is 1 according to the frequency domain resource of the first PDCCH, the base station determines that the sequence number of the PUCCH resource implicitly indicated by the frequency domain resource hiding of the last PDCCH is 1, and the base station may determine that the frequency domain resource of the last PDCCH is CCE4-CCE7(L ═ 4).

The manner of determining the at least two PDSCH resources by the base station is the same as the manner of determining the at least two PDCCH resources, and is not described herein again.

And after the base station determines the N PDCCH resources or the N PDSCH resources, corresponding information is sent to the UE on the corresponding resources. Specifically, the manner in which the base station transmits the corresponding information to the UE may be one of the following two cases. Taking the example that the base station sends the DCI to the UE through the N PDCCH resources, the base station may send the DCI on one PDCCH resource after determining the PDCCH resource, and then determine the next PDCCH resource; alternatively, the base station may determine each PDCCH resource in the N PDCCH resources first, and then sequentially transmit DCI on the N PDCCH resources, which is not limited herein.

It should be noted that, when the downlink resource is the PDSCH resource, the principle of the processing manner of the base station is the same as that when the downlink resource is the PDCCH resource, and therefore, in this embodiment, a separate description is not given to the case that the downlink resource is the PDSCH resource.

S602: and the UE receives the K pieces of downlink information sent by the base station.

For convenience of description, the following description will be given by taking the downlink resource as a PDCCH resource and the downlink information as DCI.

The UE searches in Common Search Space (CSS) and Specific Search Space (SSS) in a blind detection manner, so as to obtain DCI transmitted by the base station.

It should be noted that although the base station transmits N DCIs to the UE, the UE may not receive all the DCIs, for example, the UE only receives N-1 DCIs, and therefore K is less than or equal to N and is greater than or equal to a positive integer of zero.

And when the UE receives the DCI sent by the base station, determining the PUCCH resource for sending the UCI through one of at least two PDCCH resources bearing the DCI. According to which of the N PDCCH resources the at least two PDCCH resources are, the ways in which the UE determines the PUCCH resource for transmitting UCI are different, and the following four ways are mainly used.

In a first determination manner, the at least two first downlink resources are a first PDCCH resource of the N PDCCH resources and a last PDCCH resource of the N PDCCH resources; or the at least two first downlink resources are a first PDCCH resource, a second last PDCCH resource and a last PDCCH resource in the N PDCCH resources:

s603: if the K pieces of downlink information include first downlink information sent by the base station, the UE determines a PUCCH resource for sending UCI according to a downlink resource occupied by the first downlink information.

After the UE receives K pieces of DCI, it determines whether a first DCI sent by the base station is received according to a counter Downlink Assignment Index (DAI) and/or a total DAI carried in the DCI. The counter DAI is described as an example. Specifically, when the UE receives a first DCI, a value of a counter DAI in the DCI is obtained, and when the value is 1, the DCI is the first DCI sent by the base station, then the UE determines a PUCCH resource set where a PUCCH resource for sending UCI is located according to a value of a PUCCH resource indicator included in the first DCI received, and then determines a sequence number of the PUCCH resource for sending UCI in the PUCCH resource set according to a PDCCH resource occupied by the first DCI received. Since the PDCCH resource includes any one or more of a frequency domain resource, a time domain resource, a code domain resource, and a port number of the PDCCH, and the base station performs the implicit indication according to a predetermined resource or the base station indicates to the UE which resource is used to perform the implicit indication, after the UE acquires the corresponding PDCCH resource, the UE determines the sequence number of the PUCCH resource according to the method described in S601, which is not described herein again.

S604: if the K pieces of downlink information do not include the first piece of downlink information sent by the base station, the UE determines a PUCCH resource for sending UCI according to the downlink resource occupied by the downlink information received last in the K pieces of downlink information.

When the UE receives the first DCI, the value of the counter DAI in the DCI is obtained, and when the value is not 1, for example, 2, it indicates that the first DCI received by the UE is the second DCI sent by the base station. Then, the UE determines a PUCCH resource for transmitting UCI according to any one of the received DCIs and the PDCCH resource occupied by the last DCI, where the specific determination method is the same as that in S603, and is not described herein again.

It should be noted that the UE determines to execute S603 or S604 according to whether the first DCI transmitted by the base station is received, that is, S603 and S604 are selected to be executed. In fig. 6, S604 is taken as an optional step as an example.

If the base station controls the PUCCH resource implicitly indicated in the second last PDCCH to be different from the PUCCH resource implicitly indicated by the first PDCCH resource and the last PDCCH resource when determining a plurality of PDCCH resources according to the PUCCH resource indicated to the UE for transmitting UCI, the method in the embodiment of the present application further includes:

s605: and the UE determines that the last downlink information sent by the base station is lost.

In the case that the at least two first downlink resources include a first PDCCH resource of the N PDCCH resources and a last PDCCH resource of the N PDCCH resources, and the UE determines, through S603, that the first DCI transmitted by the base station is received, if a PUCCH resource for transmitting UCI determined by the UE according to the first DCI is different from a PUCCH resource for transmitting UCI determined by the UE according to the last DCI received, the UE determines to lose the last DCI transmitted by the base station, and since the UE loses the last DCI, it is naturally impossible to receive the last downlink data transmitted by the base station from the last PDSCH resource indicated by the base station, when the UE transmits the UCI, a NACK response to the lost last downlink data may be added, so that the base station may determine that the UE loses the last downlink data without blind decoding when receiving the UCI.

It should be noted that S605 is optional, that is, it is not necessary to perform, that is, the UE may not determine whether the last DCI is lost, that is, if the UE loses the last DCI but is not determined by using the method of S605, the UE cannot send a NACK response to the lost last downlink data when sending the UCI, that is, the UCI lacks response bits for the last downlink data, the number of UCI bits is less than the number of UCI bits that the base station expects to receive, and therefore the base station needs to perform one blind decoding when receiving the UCI to determine that the UE loses the last downlink data.

S606: the UE transmits UCI on PUCCH resources.

And after the UE receives the K DCIs, determining K PDSCH resources according to the K DCIs, then receiving downlink data sent by the base station on the K PDSCH resources, and generating an ACK/NACK response corresponding to each PDSCH resource according to the received downlink data. For example, the UE may use K bits in the UCI to carry ACK/NACK responses for downlink data in the K PDSCH resources, where each bit represents an ACK/NACK response for corresponding downlink data, for example, the 1 st bit is an ACK/NACK response for downlink data in the PDSCH resources indicated by the received first DCI, the 2 nd bit is an ACK/NACK response for downlink data in the PDSCH resources indicated by the received second DCI, and so on. Of course, this is just an example of how the UE feeds back the ACK/NACK response, and how the UE feeds back the ACK/NACK response is not limited in this application.

Referring to fig. 8, in a second determination manner, at least two first downlink resources are a first PDCCH resource of the N PDCCH resources and a second PDCCH resource of the N PDCCH resources:

s607: if the K pieces of downlink information include first downlink information sent by the base station, the UE determines a PUCCH resource for sending uplink control information UCI according to a downlink resource occupied by the first downlink information.

S608: if the K pieces of downlink information do not include the first downlink information sent by the base station, the UE determines a PUCCH resource for sending UCI according to the downlink resource occupied by the second downlink information sent by the base station and received in the K pieces of downlink information. In fig. 8, S608 is optional.

When the UE receives the value of counter DAI in the first DCI, and when the value is not 1, the UE determines that the first DCI sent by the base station is not received, the UE determines whether the value is 2, and if the value is 2, the UE indicates that the DCI is the second DCI sent by the base station, and the UE determines the PUCCH resource for sending the UCI according to the DCI and the PDCCH resource occupied by the DCI, and the specific determination method is the same as that in S603, which is not described herein again.

It should be noted that the UE determines to perform S607 or S608 according to whether the first DCI transmitted by the base station is received, that is, S607 and S608 are selected to be performed.

S609: the UE transmits UCI on PUCCH resources.

S609 is the same as S606, and is not described herein again. It should be noted that the UE may determine, according to the counter DAI in the DCI, that the currently received DCI is the second DCI transmitted by the base station, and when the counter DAI of the first DCI received by the UE is 3, the UE determines that the first DCI and the second DCI transmitted by the base station are not received, that is, the UE does not receive the DCI transmitted by the base station through any one PDCCH of the at least two PDCCHs, and may select not to transmit the UCI.

In a third determination manner, when the at least two first downlink resources are the last two PDCCH resources of the N PDCCH resources, the UE directly determines the uplink resource for transmitting UCI according to any one DCI of the received K DCIs and the PDCCH resource occupied by the last DCI received.

In this case, if the base station controls a PUCCH resource implicitly indicated in the third last PDCCH when determining a plurality of PDCCH resources according to a PUCCH resource indicated to the UE for transmitting UCI, where the PUCCH resource implicitly indicated by the last two PDCCH resources is different from the PUCCH resource implicitly indicated by the last two PDCCH resources, the method in this embodiment of the present application further includes:

if the PUCCH resource for transmitting UCI determined by the UE according to the received penultimate DCI is different from the PUCCH resource for transmitting UCI determined by the UE according to the received last DCI, the UE determines to lose the last DCI transmitted by the base station, and therefore, when the UE transmits UCI, a NACK response to the lost last downlink data may be added, so that the base station may determine that the UE loses the last downlink data without blind decoding when receiving the UCI.

In a fourth manner, referring to fig. 9, the at least two first downlink resources are a first PDCCH resource, a second PDCCH resource and a last PDCCH resource in the N PDCCH resources:

s610: if the K pieces of downlink information include first downlink information sent by the base station, the UE determines a PUCCH resource for sending uplink control information UCI according to a downlink resource occupied by the first downlink information.

S611: if the K pieces of downlink information do not contain the first downlink information sent by the base station, the UE determines PUCCH resources for sending UCI according to downlink resources occupied by the second downlink information sent by the base station and received in the K pieces of downlink information;

S610-S611 are the same as S607-S608, and are not described herein.

S612: and if the UE determines that the first DCI and the second DCI transmitted by the base station are not received, determining PUCCH resources for transmitting UCI according to downlink resources occupied by the last received DCI.

When the UE determines that the first DCI and the second DCI transmitted by the base station are not received through the value of the counter DAI in the DCI, the UE determines a PUCCH resource for transmitting the UCI according to any one of the received DCIs and a PDCCH resource occupied by the last DCI, and the specific determination method is the same as that in S603, which is not described herein again.

It should be noted that, if the base station controls that the implicitly indicated PUCCH resources of each of the N PDCCHs are the same when determining a plurality of PDCCH resources according to the PUCCH resource indicated to the UE for transmitting UCI, the UE may determine the PUCCH resource for transmitting UCI according to the PDCCH resource occupied by any received DCI.

In the above technical solution, the network device first uses at least two downlink resources to implicitly indicate the uplink resource used by the terminal device to send the UCI, so that when the terminal device receives any one of the downlink information on the at least two downlink resources, the uplink resource used to send the UCI is determined according to the downlink resource occupied by the received downlink information.

In the embodiments provided in the present application, the method for determining uplink resources provided in the embodiments of the present application is introduced from the perspective of each network element itself and the interaction between the network elements. It is to be understood that each network element, for example, UE, base station, etc., contains corresponding hardware structures and/or software modules for performing each function in order to implement the above functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Fig. 10 shows a schematic diagram of a possible structure of the network device 1000. The network device 1000 may implement the functions of the base station involved in the above embodiments. The network device 1000 includes a transmitting module 1001 and a receiving module 1002.

A sending module 1001, configured to send downlink information to a terminal device on N downlink resources; the N downlink resources include at least two first downlink resources, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, and the downlink resources are downlink control channel resources and/or downlink shared channel resources;

a receiving module 1002, configured to receive, on the uplink resource, the UCI sent by the terminal device.

In one possible design, the uplink resource used by the terminal device to transmit UCI determined by each of the at least two first downlink resources is the same.

In one possible design, the at least two first downlink resources include:

The last two downlink resources of the N downlink resources; or

Any three downlink resources of the N downlink resources.

In one possible design, the resources of the downlink control channel include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the resources of the downlink shared channel include:

frequency domain resources of the downlink shared channel,

Time domain resources of the downlink shared channel,

Code domain resources of the downlink shared channel,

One or more port numbers of the downlink shared channel.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 11 shows a schematic diagram of a possible configuration of a terminal device 1100. The terminal device 1100 may implement the functionality of the UE referred to in fig. 6 above. The terminal device 1100 comprises a receiving module 1101 and a determining module 1102.

A receiving module 1101, configured to receive K pieces of downlink information sent by a network device;

a determining module 1102, configured to determine, according to a downlink resource occupied by the first downlink information, an uplink resource used for sending uplink control information UCI if the K pieces of downlink information include the first downlink information sent by the network device; if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, determining an uplink resource for sending the UCI according to a downlink resource occupied by the downlink information received last in the K pieces of downlink information;

In one possible design, the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

In one possible design, the determining module 1102 is further configured to:

Fig. 12 shows a schematic diagram of a possible structure of the terminal device 1200. The terminal apparatus 1200 may implement the functions of the UE referred to in fig. 8 described above. The terminal device 1200 comprises a receiving module 1201 and a determining module 1202.

A receiving module 1201, configured to receive K pieces of downlink information sent by a network device;

a determining module 1202, configured to determine, if the K pieces of downlink information include first downlink information sent by the network device, an uplink resource used for sending uplink control information UCI according to a downlink resource occupied by the first downlink information; if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, determining an uplink resource for sending the UCI according to a downlink resource occupied by the second piece of downlink information sent by the network device and received in the K pieces of downlink information;

In one possible design, the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

In one possible design, the determining module 1202 is further configured to:

In the embodiment of the present application, the network device 1000, the terminal device 1100, and the terminal device 1200 are presented in a form of dividing each functional module corresponding to each function, or may be presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality.

In a simple embodiment, it will be appreciated by those skilled in the art that the network device 1000 may be implemented by the structure shown in fig. 13, the terminal device 1100 may be implemented by the structure shown in fig. 14, and the terminal device 1200 may be implemented by the structure shown in fig. 15. The structure shown in fig. 13, 14 and 15 will be described below.

As shown in fig. 13, network device 1300 may include a transmitter 1301, a processor 1302, and a receiver 1303. In practical applications, the physical device corresponding to the sending module 1001 in fig. 10 may be the sender 1301, and the physical device corresponding to the receiving module 1002 may be the receiver 1303.

The processor 1302 may be a Central Processing Unit (CPU) or an Application Specific Integrated Circuit (ASIC), may be one or more Integrated circuits for controlling program execution, may be a baseband chip, and so on.

The device may further include a memory, and the memory may be connected to the processor 1302 through a bus structure, a star structure or other structures, or may be connected to the processor 1302 through a dedicated connection line, for example, a bus structure in fig. 13. The number of the memories may be one or more, and the memories may be Read Only Memories (ROMs), Random Access Memories (RAMs), or magnetic disk memories, etc.

The transmitter 1301 transmits downlink information to the terminal device on N downlink resources under the control of the processor 1302; the N downlink resources include at least two target downlink resources, where the at least two target downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two target downlink resources is used to determine the uplink resource, and the downlink resource is a downlink control channel resource and/or a downlink shared channel resource;

the receiver 1303, under the control of the processor 1302, receives the UCI sent by the terminal device on the uplink resource.

In one possible design, the uplink resource used by the terminal device to transmit UCI determined by each of the at least two target downlink resources is the same.

In one possible design, the at least two target downlink resources include:

The last two downlink resources of the N downlink resources; or

Any three downlink resources of the N downlink resources.

In one possible design, the resources of the downlink control channel include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the resources of the downlink shared channel include:

frequency domain resources of the downlink shared channel,

Time domain resources of the downlink shared channel,

Code domain resources of the downlink shared channel,

One or more port numbers of the downlink shared channel.

As shown in fig. 14, terminal device 1400 may include a receiver 1401 and a processor 1402. In practical applications, the physical device corresponding to the receiving module 1101 in fig. 11 may be the receiver 1401, and the physical device corresponding to the determining module 1102 may be the processor 1402.

The processor 1402 may be a Central Processing Unit (CPU) or an Application Specific Integrated Circuit (ASIC), one or more Integrated circuits for controlling program execution, a baseband chip, or the like.

The device may further comprise a memory, which may be connected to the processor 1402 via a bus structure, such as the bus structure shown in fig. 14, or a star structure, or other structures, or may be connected to the processor 1402 via a dedicated connection line, respectively. The number of the memories may be one or more, and the memories may be Read Only Memories (ROMs), Random Access Memories (RAMs), or magnetic disk memories, etc.

The receiver 1401 receives K pieces of downlink information sent by the network device under the control of the processor 1402;

if the K pieces of downlink information include the first downlink information sent by the network device, the processor 1402 determines an uplink resource for sending uplink control information UCI according to the downlink resource occupied by the first downlink information;

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the processor 1402 determines an uplink resource for sending the UCI according to a downlink resource occupied by the last received piece of downlink information among the K pieces of downlink information;

In one possible design, the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

In one possible design, processor 1402 is further to:

As shown in fig. 15, the terminal device 1500 may include a receiver 1501 and a processor 1502. In practical applications, the physical device corresponding to the receiving module 1201 in fig. 12 may be the receiver 1501, and the physical device corresponding to the determining module 1202 may be the processor 1502.

The processor 1502 may be a Central Processing Unit (CPU) or an Application Specific Integrated Circuit (ASIC), one or more Integrated circuits for controlling program execution, a baseband chip, or the like.

The device may further comprise a memory, which may be connected to the processor 1502 via a bus structure, such as the bus structure shown in fig. 15, or a star structure or other structures, or may be connected to the processor 1502 via dedicated connection lines. The number of the memories may be one or more, and the memories may be Read Only Memories (ROMs), Random Access Memories (RAMs), or magnetic disk memories, etc.

The receiver 1501 receives K pieces of downlink information sent by the network device under the control of the processor 1502;

if the K pieces of downlink information include the first downlink information sent by the network device, the processor 1502 determines the uplink resource for sending the uplink control information UCI according to the downlink resource occupied by the first downlink information;

if the K pieces of downlink information do not include the first piece of downlink information sent by the network device, the processor 1502 determines the uplink resource for sending the UCI according to the downlink resource occupied by the second piece of downlink information sent by the network device and received in the K pieces of downlink information;

In one possible design, the downlink control channel resources include:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

In one possible design, processor 1502 is further configured to:

The network device and the terminal device provided by the application can be a chip system, and the chip system can comprise at least one chip and can also comprise other discrete devices. The chip system may be disposed in a network device or a terminal device, and support the network device or the terminal device to complete the communication method and the uplink resource determination method provided in the embodiments of the present application.

An embodiment of the present application provides a computer storage medium, where instructions are stored in the computer storage medium, and when the instructions are run on a computer, the computer is caused to execute the foregoing communication method and uplink resource determination method.

An embodiment of the present application provides a computer program product, which includes instructions that, when executed on a computer, cause the computer to execute the foregoing communication method and uplink resource determination method.

An embodiment of the present application provides a communication system, where the communication system includes the network device and the terminal device described in fig. 6 or fig. 7.

In the above embodiments, the implementation may be wholly or partially realized 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 includes 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, 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 incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

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

1. A method of communication, comprising:

the network equipment sends a plurality of downlink information to the terminal equipment on N downlink resources; k downlink information in the plurality of downlink information is successfully sent to the terminal device, wherein N is a positive integer greater than 1, and K is a positive integer greater than 1;

the network equipment receives UCI sent by the terminal equipment on uplink resources, wherein if the K pieces of downlink information contain first downlink information sent by the network equipment, the uplink resources are determined according to downlink resources occupied by the first downlink information; if the K pieces of downlink information do not include the first piece of downlink information sent by the network, the uplink resource is determined according to the downlink resource occupied by the downlink information which is successfully sent to the terminal device last in the K pieces of downlink information, or is determined according to the downlink resource occupied by the second piece of downlink information sent by the network device.

2. An uplink resource determining method, comprising:

if the K pieces of downlink information do not include the first downlink information sent by the network device, the terminal device determines an uplink resource for sending the UCI according to the downlink resource occupied by the downlink information received last in the K pieces of downlink information;

the downlink resource is a downlink control channel resource and/or a downlink shared channel resource, and K is a positive integer greater than 1.

3. An uplink resource determining method, comprising:

if the K pieces of downlink information do not include the first downlink information sent by the network device, the terminal device determines an uplink resource for sending the UCI according to the downlink resource occupied by the second downlink information sent by the network device and received in the K pieces of downlink information;

4. The method of claim 2 or 3, wherein the downlink control channel resources comprise:

frequency domain resources of the downlink control channel,

Time domain resources of the downlink control channel,

Code domain resources of the downlink control channel,

One or more port numbers of the downlink control channel;

the downlink shared channel resource comprises:

frequency domain resources of a downlink shared channel,

Time domain resources of a downlink shared channel,

Code domain resources of a downlink shared channel,

One or more port numbers of the downlink shared channel.

5. The method of claim 4, wherein the method further comprises:

if the first uplink resource is different from the second uplink resource, the terminal device determines to lose the last downlink information sent by the network device; the first uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received penultimate downlink information and is used for sending the UCI, and the second uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received last downlink information and is used for sending the UCI; or

If the third uplink resource is different from the fourth uplink resource, the terminal device determines to lose the last downlink information sent by the network device; the third uplink resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received first downlink information and used for sending the UCI, and the fourth uplink control channel resource is an uplink resource which is determined by the terminal device according to a downlink resource occupied by the received last downlink information and used for sending the UCI.

6. A network device comprising a transmitter, a processor, and a receiver, wherein:

the transmitter transmits a plurality of downlink information to the terminal equipment on N downlink resources under the control of the processor; k downlink information in the plurality of downlink information is successfully sent to the terminal device, wherein N is a positive integer greater than 1, and K is a positive integer greater than 1;

the receiver receives the UCI sent by the terminal device on an uplink resource under the control of the processor, wherein if the K pieces of downlink information include a first piece of downlink information sent by the network device, the uplink resource is determined according to a downlink resource occupied by the first piece of downlink information; if the K pieces of downlink information do not include the first piece of downlink information sent by the network, the uplink resource is determined according to the downlink resource occupied by the downlink information which is successfully sent to the terminal device last in the K pieces of downlink information, or is determined according to the downlink resource occupied by the second piece of downlink information sent by the network device.

7. A terminal device, comprising a receiver and a processor, wherein:

if the K pieces of downlink information do not include the first downlink information sent by the network device, the processor determines an uplink resource for sending the UCI according to the downlink resource occupied by the downlink information received last in the K pieces of downlink information;

8. A terminal device, comprising a receiver and a processor, wherein: