CN111294934A

CN111294934A - PUCCH resource indication and determination method and device, base station and terminal

Info

Publication number: CN111294934A
Application number: CN201910008093.5A
Authority: CN
Inventors: 周欢; 徐志昆
Original assignee: Beijing Spreadtrum Hi Tech Communications Technology Co Ltd
Current assignee: Beijing Spreadtrum Hi Tech Communications Technology Co Ltd
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2020-06-16
Anticipated expiration: 2039-01-04
Also published as: CN111294934B

Abstract

A PUCCH resource indication method, a PUCCH resource determination device, a base station and a terminal are provided, wherein the PUCCH resource indication method comprises the following steps: determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and transmitting the PUCCH indication information in the cell. By the technical scheme provided by the invention, the difficulty of PUCCH transmission of the UE in the unlicensed frequency band can be reduced, and flexible transmission of uplink control information is facilitated.

Description

PUCCH resource indication and determination method and device, base station and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating and determining PUCCH resources, a base station, and a terminal.

Background

The 3rd Generation Partnership Project (3 GPP) standards organization will study how to deploy The Fifth-Generation mobile communications (5G) New wireless (New Radio, NR) system on The unlicensed spectrum, so as to achieve The purposes of fairly and effectively utilizing The unlicensed spectrum and increasing The data transmission rate of The NR system.

The NR system uses unlicensed spectrum technology, also known as New radio access unlicensed (NR-U) technology. There are three main ways of NR-U technology. A first NR cell of an unlicensed spectrum is used as a primary cell; the second is that a User Equipment (User Equipment, UE for short) accesses an unlicensed spectrum NR cell through a licensed spectrum Long Term Evolution (LTE) cell, and the third is that the UE accesses an unlicensed spectrum NR cell through a licensed spectrum NR cell. In the second and third modes, the UE and the NR base station (also referred to as a gNB) or an evolved Node B (eNB) may operate on the licensed spectrum and the unlicensed spectrum simultaneously through a carrier aggregation technique.

For the UE deployed in the NR authorized frequency band, before a Radio Resource Control (RRC) connection is established, the NR base station may indicate a cell-level Physical Uplink Control Channel (PUCCH) Resource set by using Remaining Minimum System Information (RMSI). And each UE in the same cell adopts the same PUCCH resource set. In each PUCCH resource set, the PUCCH format, PUCCH starting position, and length are fixed. For the UE deployed in the unlicensed frequency band, since the access channel time is uncertain, if the PUCCH resource with a single length is used, the difficulty of sending the PUCCH signal by the UE will be increased.

Disclosure of Invention

The technical problem solved by the invention is how to reduce the difficulty of sending PUCCH by UE deployed in an unlicensed frequency band, and flexibly use PUCCH resources to transmit uplink control information.

In order to solve the above technical problem, an embodiment of the present invention provides a method for indicating PUCCH resources, including: determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and transmitting the PUCCH indication information in the cell.

Optionally, the PUCCH indication information includes first indication information, where the first indication information is used to indicate a cell level PRB position of each PUCCH resource in the cell level PUCCH resource set.

Optionally, the PUCCH resource uses a frequency hopping mode, where the cell-level PRB position used in frequency hopping includes a first frequency hopping position and a second frequency hopping position, and the first frequency hopping position is determined according to an index of an interlace set in an uplink BWP in the cell.

Optionally, each interleaving resource group includes M PRBs, different PRBs in the same interleaving resource group belong to different interleaving sets, an index of an interleaving set in the uplink BWP in the cell is N, the second frequency hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

Optionally, the first indication information is located in the RMSI and has a length of a preset number of bits.

Optionally, the preset number is 4.

Optionally, the PUCCH indication information further includes: and second indication information, wherein the second indication information is used for indicating the starting position and length, the PUCCH format and the initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set.

Optionally, the PUCCH resources configured in the PUCCH resource set include: the starting position is symbol 0, and the length of each PUCCH resource is 2, 4, 10, 14, wherein the initial cyclic shift of the PUCCH resource with the length of 2 is selected from {0,3}, and the initial cyclic shift of the PUCCH resource with the length of 4, 10, or 14 is selected from {0,6 }; the starting position is PUCCH resource with symbol 12 and length 2, the starting position is PUCCH resource with symbol 10 and length 4, the starting position is PUCCH resource with symbol 7 and length 7, the starting position is PUCCH resource with symbol 4 and length 10, and the initial cyclic shift is selected from {0,6 }.

Optionally, the PUCCH resources configured in the PUCCH resource set include: the starting positions are

symbols

0, 2, 4, 6, 8, 10 and 12, and the PUCCH resources with the length of 2 are selected from {0,3 }; the starting position is symbol 7, and the length is PUCCH resource of 7.

Optionally, the second indication information is determined according to a PUCCH resource indicator and a CCE index thereof.

Optionally, the length of the PUCCH resource indicator is 3 bits.

In order to solve the above technical problem, an embodiment of the present invention further provides a method for determining PUCCH resources, including: receiving PUCCH indication information sent by a network, wherein the PUCCH indication information is obtained by the network by determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and is used for indicating that in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and determining PUCCH resources for transmitting uplink control information according to the PUCCH indication information.

Optionally, if the PUCCH resource employs a frequency hopping manner, the cell-level PRB position employed during frequency hopping includes a first frequency hopping position and a second frequency hopping position, where the first frequency hopping position is determined according to an index of an interlace set in an uplink BWP in the cell.

Optionally, the preset number is 4.

symbols

Optionally, the length of the PUCCH resource indicator is 3 bits.

In order to solve the foregoing technical problem, an embodiment of the present invention further provides an apparatus for indicating a PUCCH resource, including: the determining module is suitable for determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; a transmitting module adapted to transmit the PUCCH indication information within the cell.

In order to solve the foregoing technical problem, an embodiment of the present invention further provides a device for determining a PUCCH resource, including: the receiving module is suitable for receiving PUCCH indication information sent by a network, wherein the PUCCH indication information is obtained by the network by determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and is used for indicating that in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and the determining module is suitable for determining PUCCH resources used for transmitting uplink control information according to the PUCCH indication information.

To solve the above technical problem, an embodiment of the present invention further provides a storage medium having stored thereon computer instructions, where the computer instructions execute the steps of the above method when executed.

In order to solve the above technical problem, an embodiment of the present invention further provides a base station, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform the steps of the above method.

In order to solve the foregoing technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform the steps of the foregoing method.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a PUCCH resource indication method, which comprises the following steps: determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and transmitting the PUCCH indication information in the cell. Compared with the prior art, the technical scheme provided by the embodiment of the invention can configure more PUCCH resources for the cell deployed in the unlicensed frequency band, can increase the chances of more candidate PUCCH resources and more uplink control information for the UE, can reduce the difficulty of PUCCH transmission of the UE in the unlicensed frequency band, and is beneficial to the UE to flexibly transmit the uplink control information.

Further, the PUCCH indication information includes first indication information, where the first indication information is used to indicate a cell-level PRB position of each PUCCH resource in the cell-level PUCCH resource set. By the technical scheme provided by the embodiment of the invention, the number of PUCCH resources in a cell level PUCCH resource set can be increased, and further possibility is provided for UE to flexibly use the PUCCH resources.

Further, the PUCCH indication information further includes: and second indication information, wherein the second indication information is used for indicating the starting position and length, the PUCCH format and the initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set. By the technical scheme provided by the embodiment of the invention, more candidate UE-level PUCCH resources can be provided for the UE, and the UE can flexibly use the PUCCH resources.

Drawings

Fig. 1 is a schematic diagram of uplink resource mapping in an unlicensed frequency band in the prior art;

fig. 2 is a diagram illustrating PUCCH resource mapping in the prior art;

fig. 3 is a flowchart illustrating a method for indicating PUCCH resources according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a PUCCH resource determination method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an apparatus for indicating PUCCH resources according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an apparatus for determining PUCCH resources according to an embodiment of the present invention;

fig. 7 is a signaling interaction diagram of an exemplary scenario according to an embodiment of the present invention.

Detailed Description

As mentioned in the background, since the unlicensed spectrum access channel time is uncertain, the same cell uses a single-length PUCCH resource, which increases the difficulty of UE transmitting the PUCCH channel.

The existing 3GPP LTE system adopts Licensed Assisted Access (LAA) technology to communicate in unlicensed spectrum. In LAA, an Uplink Shared Channel (UL-SCH) and a Physical Uplink Control Channel (PUCCH) may be transmitted in an interlace (interlace) manner. Referring to fig. 1, for example, the LAA includes 100 Resource Blocks (RBs) in a 20MHz transmission bandwidth, and configures 10 Physical Resource Blocks (PRBs) for the UL-SCH Resource, in this case, the UL-SCH may be uniformly distributed in the frequency domain, for example, the RB indexes are RB0, RB10, RB20, … …, and RB90 for transmission. Wherein, RB 0-RB 9 form a staggered resource group (cluster)0, and RB 10-RB 19 form staggered resource groups (cluster)1, … …, each of which contains 10 RBs and contains staggered resource subsets in different staggered resource sets (for example, interlace 0-interlace 9). In the conventional NR protocol, a single Control Channel Element (CCE) includes 6 Resource Element Groups (REGs). Each REG refers to a single Resource Block (RB) occupying one Orthogonal Frequency Division Multiplexing (OFDM) symbol duration, that is, each REG contains 12 Resource Elements (REs) that are consecutive in the frequency domain.

A Physical Uplink Control Channel (PUCCH) is a Physical Channel of an Uplink in a New Radio (NR) system, and carries Uplink Control Information (UCI). The intention of setting the PUCCH is that when a User Equipment (UE) is not scheduled, that is, when an Uplink Shared Channel (UL-SCH) resource is not allocated, the UE may transmit L1/L2 control information including a Channel state report (such as a Pre-coding matrix Indicator (PMI) and a Channel Quality Indicator (CQI), an HARQ acknowledgement (ACK/NACK), and a Scheduling Request (SR)) by using the PUCCH.

TABLE 1

PUCCH format	Length of OFDM symbol	Bits (bit)
			0	1-2	≤2
1	4-12	≤2
			2	1-2	>2
3	4-12	>2
			4	4-12	>2

Specifically, the format of PUCCH may be as shown in table 1, where PUCCH formats (PUCCH formats) 0 and 1 can only carry data less than or equal to 2 bits, and PUCCH format 2/3/4 can carry data greater than 2 bits.

The set of PUCCH resources defined in the NR protocol is shown in table 2.

TABLE 2

In practical application, the NR base station determines a set of cell-level PUCCH resource sets, may use a certain row of Information in table 2 indicated by 4 bits in Remaining Minimum System Information (RMSI), and then determines 16 PUCCH resources among the PUCCH resources as UE-level PUCCH resources, and determines which PUCCH resource is finally used by the UE in a manner of implicit mapping by using a PUCCH Resource Indicator (PRI) and a CCE index (CCE-index-based) in Downlink Control Information (DCI).

Fig. 2 is a diagram illustrating PUCCH resource mapping in the prior art. It is assumed that PUCCH resources include PUCCH1 (shown as diagonal lines) and PUCCH2 (shown as squares), and are located in a Band Width Part (BWP) of an uplink (Up-Link, UL). When the PUCCH resource is PUCCH format 1, the lengths of PUCCH1 and PUCCH2 may be 14 symbols, respectively. Alternatively, when the PUCCH resource is PUCCH format 1, the lengths of PUCCH1 and PUCCH2 may be 10 symbols, respectively. Alternatively, when the PUCCH resource is PUCCH format 1, the PUCCH1 and PUCCH2 may have a length of 4 symbols, respectively. Still alternatively, when the PUCCH resource is PUCCH format 0, the lengths of PUCCH1 and PUCCH2 may be 2 symbols, respectively.

Specifically, in the prior art, the length of PUCCH format 0 may be 2 symbols (for simplicity, symbol information is omitted below, for example, 2 symbols are abbreviated as 2), and the starting symbol is at symbol 12 of the slot; PUCCH format 1 is 4, 10 or 14 long, and the starting symbol is symbol 10, symbol 4, symbol 0 within the slot, respectively. The PRB index where the PUCCH resource is located is jointly determined by PRI and RMSI. As can be seen from table 2, the PUCCH format, PUCCH start position, and length of each PUCCH resource indicated by 4 bits in the RMSI are all fixed. The frequency domain location of the PUCCH transmission depends on the cell level reference location and the UE level parameters.

Since the time for accessing the channel by the unlicensed spectrum is not fixed in the unlicensed band, if a single-length PUCCH is used, the difficulty of sending the PUCCH by the UE will be increased, and the cell using the single-length PUCCH format is not suitable for the unlicensed band. How the base station instructs the UE to use PUCCH resources before RRC connection establishment still needs further investigation.

The embodiment of the invention provides a PUCCH resource indication method, which comprises the following steps: determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; and transmitting the PUCCH indication information in the cell. Compared with the prior art, the technical scheme provided by the embodiment of the invention can configure more PUCCH resources for the cell deployed in the unlicensed frequency band, can increase more candidate PUCCH resources and more opportunities for transmitting uplink control information for the UE, can reduce the difficulty of PUCCH transmission of the UE in the unlicensed frequency band, and is beneficial to the UE to flexibly use the PUCCH for transmitting the uplink control information.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 3 is a flowchart illustrating a method for indicating PUCCH resources according to an embodiment of the present invention. The indication method may be performed by the network side, for example, by the NR base station. Specifically, the indication method may include the steps of:

step S101, determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

step S102, the PUCCH indication information is sent in the cell.

More specifically, on the unlicensed frequency band, in step S101, a network (e.g., a network side base station) may determine a set of cell-level PUCCH resources for each cell deployed in the unlicensed frequency band.

The base station may configure a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions for a single cell to obtain a PUCCH resource set of the single cell, thereby obtaining PUCCH indication information. Through the PUCCH indication information, the UE deployed in the unlicensed frequency band can know the cell-level PUCCH resource of the resident cell before RRC connection is established.

In a specific implementation, the length of the PUCCH resource may refer to a symbol length within a slot, and the start position may refer to a symbol start position within the slot.

In a specific implementation, the PUCCH indication information may include first indication information. The first indication information may indicate a cell-level PRB location for each PUCCH resource in the cell-level PUCCH resource set.

Wherein the cell-level PRB locations may refer to an interleaving set in uplink BWP, and the cell-level PRBs occupied by the PUCCH resources are represented by an index of the interleaving set.

In a specific implementation, if the network determines that the PUCCH resource employs a frequency hopping scheme, the PUCCH resource may have 2 frequency hopping positions, for example, a first frequency hopping position and a second frequency hopping position. The network may indicate one of the hop positions, such as the first hop position, using 4 bits in the RMSI.

In particular implementation, the first hopping position may be determined according to an index of an interlace (interlace) in an uplink BWP in the cell. Those skilled in the art understand that the hopping positions of the PUCCH resources are located in the interlace set. Each interleaving set contains PRBs that are located in a different set of interleaving resources (cluster). That is, each interleaving resource group includes M PRBs, and different PRBs in the same interleaving resource group belong to different interleaving sets. If a set of interleaved resources contains M PRBs, it means that the upstream BWP contains M interleaved sets.

Further, when the index of the interlace set in the uplink BWP in the cell is N, i.e. the first hop position is located in interlace set N, the second hop position is located in interlace set (M-N-1), i.e. the index of the interlace set in which the second hop position is located is (M-N-1). Wherein M is a positive integer and N is a non-negative integer.

TABLE 3

Table 3 shows a location of a PUCCH resource indicated by 4 bits in RMSI. Assuming that the interlace set index is 0 to 9, referring to table 3, the 4 bits may have a plurality of reserved bits in addition to the RMSI index. Specifically, each RMSI index value corresponds to an interlace set index. For example, when the bit is "0000", it means that the RMSI index is 0 and the interlace set index is 0; for another example, when the bit is "1001", it indicates that the RMSI index is 9 and the interlace set index is 9, which are not listed here.

In a specific implementation, the PUCCH indication information may further include: second indication information indicating a symbol start position and a symbol length, a PUCCH format, and an initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set. Specifically, the base station may jointly indicate other information of the PUCCH resource, such as PUCCH format, symbol start position, symbol length, initial cyclic shift, using 3-bit PRI in the DCI information and 1-bit implicitly indicated by CCE-index-based.

The CCE-index-based may be an index value of a starting CCE used by a physical downlink control channel. The starting CCE is a control channel element that transmits the DCI information. The 1 bit of the CCE-index-based implicit indication is determined according to an index value of the starting CCED.

As a non-limiting example, the PUCCH resource set may configure 16 PUCCH resources. Specifically, the 16 PUCCH resources may include:

(1) the starting position in the slot is symbol 0, and the length is 2, 4, 10, 14 symbols respectively, which total 8 PUCCH resources. Wherein the initial cyclic shift of the PUCCH resource of length 2 may be selected from the set {0,3 }; the initial cyclic shift of PUCCH resources of length 4, 10, 14 may be selected from the set {0,6 }; (2) the initial position in the time slot is a symbol 12, and the length is 2; symbol 10, length 4; symbol 7, length 7; symbol 4, length 10 and 8 PUCCH resources: wherein the initial cyclic shift of the PUCCH resource of length 2 may be selected from the set {0,3 }; the initial cyclic shift of PUCCH resources of length 4, 7, 10 may be selected from the set 0, 6.

As a variation, the 16 PUCCH resources may include: (1) the starting positions in the slot are

symbols

0, 2, 4, 6, 8, 10 and 12 respectively, the length is 2 symbols, and the number of PUCCH resources is 14, and the initial cyclic shift of each PUCCH resource can be selected from a set {0,3 }; (2) the starting position in the slot is symbol 7, the length is 7 symbols, and 2 PUCCH resources are total.

In step S102, the base station may send the first indication information and the second indication information in the cell through RRC signaling.

In specific implementation, the base station may send the first indication information by using 4 bits in the RMSI, and may implicitly indicate the second indication information by using the PRI and the CCE-index-based.

Note that the PUCCH formats (e.g., PUCCH format 0 and PUCCH format 1) may be determined by the length. For example, a length of 2 indicates PUCCH format 0, and the other lengths indicate PUCCH format 1.

As shown in table 4, the UE can know the initial cyclic shift and the start position according to the received PRI bit value and the CCE-index-based implicit bit value determined by calculation. In practical applications, those skilled in the art may change more embodiments according to actual needs, and details are not described herein.

TABLE 4

Fig. 4 is a flowchart illustrating a method for determining PUCCH resources according to an embodiment of the present invention. The determination method may include the steps of:

step S201, receiving PUCCH indication information sent by a network, wherein the PUCCH indication information is obtained by the network determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and is used for indicating that in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

step S202, according to the PUCCH indication information, determining PUCCH resources for transmitting uplink control information.

Specifically, in step S201, the UE may receive PUCCH indication information including first indication information and second indication information transmitted by the network from the network. The first indication information and the second indication information are obtained by the network determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and may indicate that a single cell is configured with a plurality of PUCCH resources of different lengths and/or a plurality of PUCCH resources of different starting positions.

In a specific implementation, the first indication information may be used to indicate a cell-level PRB location of each PUCCH resource in the cell-level PUCCH resource set.

The first indication information may be located in the RMSI, and may have a length of a preset number of bits, where the preset number may be 4.

Further, if the PUCCH resource employs a frequency hopping manner, the cell-level PRB location employed by the PUCCH resource during frequency hopping may include a first frequency hopping location and a second frequency hopping location, where the first frequency hopping location may be determined according to an index of an interlace set in an uplink BWP in the cell.

Furthermore, each interleaving resource group comprises M PRBs, different PRBs in the same interleaving resource group belong to different interleaving sets, the index of an interleaving set in the uplink BWP in the cell is N, the second frequency hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

In a specific implementation, the PUCCH indication information may further include: and second indication information. The second indication information may be used to indicate a starting position and length, a PUCCH format, and an initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set. The second indication information may be determined according to the PRI and the CCE index thereof. Wherein the length of the PUCCH resource indicator is 3 bits.

As a non-limiting example, the PUCCH resources configured in the PUCCH resource set may include: the starting position is symbol 0, and the length of each PUCCH resource is 2, 4, 10, 14, wherein the initial cyclic shift of the PUCCH resource with the length of 2 is selected from {0,3}, and the initial cyclic shift of the PUCCH resource with the length of 4, 10, or 14 is selected from {0,6 }. In addition, the method can further comprise the following steps: the starting position is PUCCH resource with symbol 12 and length 2, the starting position is PUCCH resource with symbol 10 and length 4, the starting position is PUCCH resource with symbol 7 and length 7, the starting position is PUCCH resource with symbol 4 and length 10, and the initial cyclic shift is selected from {0,6 }.

As a variation, the PUCCH resources configured in the PUCCH resource set may include: the starting positions are

symbols

In step S202, the UE may determine a starting position, a length, an initial cycle position, a PUCCH format, and the like of the PUCCH resource according to the received PUCCH indication information. And then, uplink control information can be uploaded by adopting the PUCCH resources.

Those skilled in the art understand that the steps S201 to S202 can be regarded as execution steps corresponding to the steps S101 to S102 described in the above embodiment shown in fig. 3, and the two steps are complementary in specific implementation principle and logic. Therefore, for the determination method of the PUCCH resource on the UE side, reference may be made to the related description of the embodiment shown in fig. 3, which is not described herein again.

Therefore, the technical scheme provided by the embodiment of the invention can reduce the difficulty of sending the PUCCH by the UE in the unauthorized frequency band, and is beneficial to the UE to flexibly transmit the uplink control information.

Fig. 5 is a schematic structural diagram of an indication apparatus of PUCCH resources according to an embodiment of the present invention, which may be used to implement the technical solution of the method shown in fig. 3 and executed by a network side (e.g., an NR base station). In a specific implementation, the PUCCH resource indicating device 5 (hereinafter, simply referred to as indicating device 5 for simplicity) may include: a determination module 51 and a sending module 52.

More specifically, the determining module 51 is adapted to determine a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band, so as to obtain PUCCH indication information, where a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; the transmitting module 52 is adapted to transmit the PUCCH indication information in the cell.

In a specific implementation, the PUCCH indication information may include first indication information, and the first indication information may be used to indicate a cell-level PRB position of each PUCCH resource in the cell-level PUCCH resource set.

In a specific implementation, the PUCCH resource may use a frequency hopping manner, and the cell-level PRB position used in frequency hopping includes a first frequency hopping position and a second frequency hopping position, where the first frequency hopping position is determined according to an index of an interlace set in an uplink BWP in the cell.

In an embodiment, each interleaved resource group may include M PRBs, different PRBs in the same interleaved resource group belong to different interleaving sets, an index of an interleaving set in the uplink BWP in the cell is N, the second hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

In a specific implementation, the first indication information may be located in the RMSI and have a length of a preset number of bits. Wherein the preset number may be 4.

In a specific implementation, the PUCCH indication information may further include: and second indication information, wherein the second indication information is used for indicating the starting position and length, the PUCCH format and the initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set.

As a non-limiting example, the PUCCH resources configured in the PUCCH resource set may include: the starting position is symbol 0, and the length of each PUCCH resource is 2, 4, 10, 14, wherein the initial cyclic shift of the PUCCH resource with the length of 2 is selected from {0,3}, and the initial cyclic shift of the PUCCH resource with the length of 4, 10, or 14 is selected from {0,6 }; and the PUCCH resource with the initial position of the symbol 12 and the length of 2, the PUCCH resource with the initial position of the symbol 10 and the length of 4, the PUCCH resource with the initial position of the symbol 7 and the length of 7, the PUCCH resource with the initial position of the symbol 4 and the length of 10, and the initial cyclic shift of the PUCCH resource is selected from {0,6 }.

symbols

0, 2, 4, 6, 8, 10 and 12, and the PUCCH resources with the length of 2 are selected from {0,3 }; and a PUCCH resource having a starting position of symbol 7 and a length of 7.

Wherein the second indication information may be determined according to a PUCCH resource indicator and a CCE index thereof. The PUCCH resource indicator may be 3 bits in length.

For more details of the operation principle and the operation mode of the indicating device 5, reference may be made to the description of fig. 3, and details are not repeated here.

Fig. 6 is a schematic structural diagram of a PUCCH resource determining apparatus according to an embodiment of the present invention, where the PUCCH resource determining apparatus 6 (hereinafter, simply referred to as determining apparatus 6) may implement the method technical solution shown in fig. 4 and be executed by a UE.

Specifically, the determination means 6 may include: a receiving module 61, adapted to receive PUCCH indication information sent by a network, where the PUCCH indication information is obtained by determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band by the network, and is used to indicate that, in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions; a determining module 62, adapted to determine a PUCCH resource for transmitting uplink control information according to the PUCCH indication information.

In a specific implementation, the PUCCH indication information may include first indication information, where the first indication information is used to indicate a cell-level PRB position of each PUCCH resource in the cell-level PUCCH resource set. The first indication information may be located in the RMSI and may have a length of a preset number of bits. The preset number is 4.

In a specific implementation, if the PUCCH resource employs a frequency hopping manner, the cell-level PRB locations that may be employed in frequency hopping include a first frequency hopping location and a second frequency hopping location, where the first frequency hopping location is determined according to an index of an interlace set in an uplink BWP in the cell.

In an embodiment, each interleaved resource group includes M PRBs, different PRBs in the same interleaved resource group belong to different interleaving sets, an index of an interleaving set in the uplink BWP in the cell is N, the second hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

In a specific implementation, the PUCCH resources configured in the PUCCH resource set may include: the starting position is symbol 0, and the length of each PUCCH resource is 2, 4, 10, 14, wherein the initial cyclic shift of the PUCCH resource with the length of 2 is selected from {0,3}, and the initial cyclic shift of the PUCCH resource with the length of 4, 10, or 14 is selected from {0,6 }; the starting position is PUCCH resource with symbol 12 and length 2, the starting position is PUCCH resource with symbol 10 and length 4, the starting position is PUCCH resource with symbol 7 and length 7, the starting position is PUCCH resource with symbol 4 and length 10, and the initial cyclic shift is selected from {0,6 }.

symbols

In a specific implementation, the second indication information may be determined according to a PUCCH resource indicator and a CCE index thereof. The length of the PUCCH resource indicator is 3 bits.

For more details of the operation principle and the operation mode of the determining device 6, reference may be made to the description of fig. 4, and details are not repeated here.

The signaling interaction between the user equipment and the network (e.g., NR base station) employing embodiments of the present invention is further described below in conjunction with a typical application scenario.

In a typical application scenario, referring to fig. 7, the user equipment 1 and the network 2 are deployed in an unlicensed frequency band, and before the user equipment 1 and the network 2 establish an RRC connection, the network 2 may perform the following operation to indicate PUCCH resources used by the UE.

Specifically, first, the network 2 performs operation s0, that is, the network 2 determines a set of cell-level PUCCH resources deployed in a cell of the unlicensed frequency band, and obtains the first indication information and the second indication information. In the PUCCH resource set, a single cell may be configured with a plurality of PUCCH resources of different lengths and/or a plurality of PUCCH resources of different starting positions;

secondly, the network 2 performs operation s1, i.e. transmits first indication information to the user equipment 1, the first indication information may indicate the cell level PRB locations of the respective PUCCH resources in the cell level PUCCH resource set. When the PUCCH resource adopts a frequency hopping mode, the cell-level PRB position used for frequency hopping may include a first frequency hopping position and a second frequency hopping position. If the first frequency hopping position is located in the interlace set pointed by the index N of the interlace set in the uplink BWP in the cell, the second frequency hopping position is located in the interlace set pointed by the interlace set index (M-N-1), wherein M refers to the number of PRBs in each interlace resource group, namely the number of interlace sets;

then, the network 2 performs operation s2, that is, transmits second indication information to the user equipment 1, where the second indication information may be implicitly indicated by PRI and CCE-index-based to indicate a starting position and length, a PUCCH format, and an initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set;

further, after receiving the first indication information and the second indication information, the UE may determine a PUCCH resource for uplink control information transmission (not shown).

For more contents of the working principle and the working mode of the user equipment 1 and the network 2 in the application scenario shown in fig. 7, reference may be made to the related descriptions in fig. 3 and fig. 4, which are not repeated herein.

Further, the embodiment of the present invention further discloses a storage medium, on which a computer instruction is stored, and when the computer instruction runs, the technical solution of the monitoring method described in the embodiments shown in fig. 3 and fig. 4 is executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The computer readable storage medium may include ROM, RAM, magnetic or optical disks, and the like.

Further, an embodiment of the present invention further discloses a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes the technical scheme of the uplink channel resource allocation method in the embodiment shown in fig. 3 when executing the computer instruction. Preferably, the base station may be an NR base station.

Further, an embodiment of the present invention further discloses a terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 4 when running the computer instruction. Preferably, the terminal may be an NR UE.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for indicating PUCCH resources, comprising:

determining a cell-level PUCCH resource set for cells deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

and transmitting the PUCCH indication information in the cell.

2. The indication method according to claim 1, wherein the PUCCH indication information comprises first indication information indicating cell-level PRB positions of respective PUCCH resources in the cell-level PUCCH resource set.

3. The indication method according to claim 2, wherein the PUCCH resources are in a frequency hopping manner, and the cell-level PRB locations used for frequency hopping include a first frequency hopping location and a second frequency hopping location, and the first frequency hopping location is determined according to an index of an interlace set in an uplink BWP in the cell.

4. The method according to claim 3, wherein each set of interleaved resource comprises M PRBs, different PRBs in the same set of interleaved resources belong to different interleaving sets, the index of an interleaving set in an uplink BWP in the cell is N, the second hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

5. The indication method according to any one of claims 2 to 4, wherein the first indication information is located in RMSI, and has a length of a preset number of bits.

6. The indication method according to claim 5, wherein the preset number is 4.

7. The indication method according to claim 2, wherein the PUCCH indication information further includes: and second indication information, wherein the second indication information is used for indicating the starting position and length, the PUCCH format and the initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set.

8. The indication method according to claim 7, wherein the PUCCH resources configured in the PUCCH resource set comprise:

the starting position is symbol 0, and the length of each PUCCH resource is 2, 4, 10, 14, wherein the initial cyclic shift of the PUCCH resource with the length of 2 is selected from {0,3}, and the initial cyclic shift of the PUCCH resource with the length of 4, 10, or 14 is selected from {0,6 };

the starting position is PUCCH resource with symbol 12 and length 2, the starting position is PUCCH resource with symbol 10 and length 4, the starting position is PUCCH resource with symbol 7 and length 7, the starting position is PUCCH resource with symbol 4 and length 10, and the initial cyclic shift is selected from {0,6 }.

9. The indication method according to claim 7, wherein the PUCCH resources configured in the PUCCH resource set comprise:

the starting positions are symbols 0, 2, 4, 6, 8, 10 and 12, and the PUCCH resources with the length of 2 are selected from {0,3 };

the starting position is symbol 7, and the length is PUCCH resource of 7.

10. The indication method according to any of claims 7 to 9, wherein said second indication information is determined according to a PUCCH resource indicator and a CCE index thereof.

11. The indication method according to claim 10, wherein the PUCCH resource indicator is 3 bits long.

12. A method for determining PUCCH resources, comprising:

receiving PUCCH indication information sent by a network, wherein the PUCCH indication information is obtained by the network by determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and is used for indicating that in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

and determining PUCCH resources for transmitting uplink control information according to the PUCCH indication information.

13. The method of claim 12, wherein the PUCCH indication information comprises first indication information indicating cell-level PRB positions of individual PUCCH resources in the cell-level PUCCH resource set.

14. The method of claim 13, wherein if the PUCCH resource is in a frequency hopping manner, the cell-level PRB position used for frequency hopping includes a first frequency hopping position and a second frequency hopping position, and the first frequency hopping position is determined according to an index of an interlace set in an uplink BWP in the cell.

15. The method of claim 14, wherein each set of interleaved resource comprises M PRBs, different PRBs in the same set of interleaved resources belong to different sets, an index of an interleaved set in an uplink BWP in the cell is N, the second hopping position is (M-N-1), M is a positive integer, and N is a non-negative integer.

16. The method according to any one of claims 13 to 15, wherein the first indication information is located in the RMSI and has a length of a preset number of bits.

17. The method of claim 16, wherein the predetermined number is 4.

18. The method of determining according to claim 13, wherein the PUCCH indication information further includes: and second indication information, wherein the second indication information is used for indicating the starting position and length, the PUCCH format and the initial cyclic shift of each PUCCH resource in the cell-level PUCCH resource set.

19. The method of claim 18, wherein the PUCCH resources configured in the PUCCH resource set include:

20. The method of claim 18, wherein the PUCCH resources configured in the PUCCH resource set include:

the starting position is symbol 7, and the length is PUCCH resource of 7.

21. The determination method according to any of claims 18 to 20, wherein the second indication information is determined according to a PUCCH resource indicator and a CCE index thereof.

22. The method of claim 21, wherein the PUCCH resource indicator is 3 bits long.

23. An apparatus for indicating PUCCH resources, comprising:

the determining module is suitable for determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band to obtain PUCCH indication information, wherein in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

a transmitting module adapted to transmit the PUCCH indication information within the cell.

24. An apparatus for determining PUCCH resources, comprising:

the receiving module is suitable for receiving PUCCH indication information sent by a network, wherein the PUCCH indication information is obtained by the network by determining a cell-level PUCCH resource set for a cell deployed in an unlicensed frequency band, and is used for indicating that in the PUCCH resource set, a single cell is configured with a plurality of PUCCH resources with different lengths and/or a plurality of PUCCH resources with different starting positions;

and the determining module is suitable for determining PUCCH resources used for transmitting uplink control information according to the PUCCH indication information.

25. A storage medium having stored thereon computer instructions, wherein the computer instructions when executed perform the steps of the method of any of claims 1 to 11 or the method of any of claims 12 to 22.

26. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 11.

27. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 12 to 22.