CN108616343B

CN108616343B - Method and device for UE (user equipment) and base station in wireless communication

Info

Publication number: CN108616343B
Application number: CN201710051640.9A
Authority: CN
Inventors: 蒋琦
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2020-10-02
Anticipated expiration: 2037-01-23
Also published as: CN108616343A

Abstract

The invention discloses a method and equipment used for UE (user equipment) and a base station in wireless communication. The UE transmits a first wireless signal on a first time-frequency resource. The first time-frequency resource is one of K alternative time-frequency resources, and the K alternative time-frequency resources belong to X alternative time-frequency resources. The alternative time frequency resource comprises a positive integer number of the time frequency resource blocks. Q time frequency resource blocks exist in the third time frequency resource, and at least one alternative time frequency resource except the third time frequency resource exists in the X alternative time frequency resources and comprises the Q time frequency resource blocks. Q is larger than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q. The invention can effectively reduce the conflict probability of resources and improve the spectrum efficiency of uplink transmission.

Description

Method and device for UE (user equipment) and base station in wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission scheme and apparatus for unlicensed (Grant-Free) uplink and downlink data.

Background

In an existing LTE (Long Term Evolution ) system, dynamic scheduling of uplink data is completed based on an uplink Grant (Grant). A Resource Block Assignment Field (Resource Block Assignment Field) exists in DCI (Downlink Control Information) corresponding to the uplink grant to dynamically indicate at least one of { frequency domain resources, time domain resources } occupied by the uplink data.

In future mobile communication systems, in order to save control signaling overhead and reduce scheduling delay, Grant-Free (Grant-Free) based uplink data transmission will be adopted, and the corresponding resource allocation mode also needs to be redefined.

Disclosure of Invention

In the unlicensed uplink transmission, a simple implementation manner is that each UE (User Equipment) occupies time-frequency resources with the same size when transmitting data. Although the complexity of receiving by the base station is reduced by this way, for the UE, only a fixed number of bits can be transmitted in one uplink transmission, which seriously reduces the flexibility of the uplink transmission.

The present application provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the UE of the present application may be applied in a base station and vice versa.

The application discloses a method used in UE in wireless communication, which comprises the following steps:

-step a. transmitting a first wireless signal on a first time-frequency resource.

The first time-frequency resource is one of K alternative time-frequency resources, and the K alternative time-frequency resources belong to X alternative time-frequency resources. A first block of bits is used to generate the first wireless signal, the first block of bits comprising Y bits. The X is a positive integer, and the K is a positive integer not greater than the X. The first time-frequency resource set comprises N time-frequency resource blocks, and the alternative time-frequency resources comprise positive integer numbers of the time-frequency resource blocks. The third time frequency resource is the optional time frequency resource composed of more than Q time frequency resource blocks in any one of the X optional time frequency resources, Q time frequency resource blocks exist in the third time frequency resource, and at least one optional time frequency resource except the third time frequency resource in the X optional time frequency resources comprises the Q time frequency resource blocks. Q is a positive integer greater than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q. And N and Y are positive integers respectively.

As an embodiment, the first bit block is delivered by a higher layer of the UE to a physical layer of the UE.

As an embodiment, the higher layer is a MAC (Media Access Control) layer.

As an embodiment, the higher layer is an RLC (Radio Link Control) layer.

As an embodiment, the above method has the advantages that: the possibility of collision of the alternative time-frequency resources occupied by the terminal is reduced as much as possible.

As an example, another peculiarity of the above method consists in: only the K alternative time frequency resources in the X alternative time frequency resources correspond to the UE, and the alternative time frequency resources except the K alternative time frequency resources in the X alternative time frequency resources belong to other UEs. This way, Collision (Collision) caused by different UEs occupying the same time-frequency resource can be effectively avoided.

As an embodiment, any Q time frequency resource blocks in the third time frequency resource belong to at least one alternative time frequency resource except the third time frequency resource in the X alternative time frequency resources.

As one embodiment, Q is a positive integer power of 2.

As an embodiment, the third time-frequency resource includes a number of time-frequency resource blocks that is R times the number of Q. The time frequency resource blocks contained in the third time frequency resource are divided into R time frequency resource block groups, each time frequency resource block group contains Q time frequency resource blocks, and the R time frequency resource block groups respectively belong to R alternative time frequency resources in the X alternative time frequency resources. The third time frequency resource is the alternative time frequency resource except the R alternative time frequency resources. And R is a positive integer greater than 1.

As a sub-embodiment of this embodiment, R is a positive integer power of 2.

As one embodiment, the X is greater than the K.

As an embodiment, the number of REs included in at least two of the N time-frequency resource blocks is different.

As an embodiment, the number of REs included in each of the N time-frequency resource blocks is the same.

As an example, the first bit Block is a TB (Transmission Block).

As an embodiment, the first bit block is transmitted on UL-SCH (UpLink Shared Channel).

As an embodiment, the first wireless signal is transmitted on a PUSCH (Physical Uplink shared channel).

As an embodiment, the first wireless signal comprises at least the latter of { control information, physical layer data }.

As an embodiment, the physical layer data in the first wireless signal is output after Channel Coding (Channel Coding), Modulation Mapper (Modulation Mapper), layer Mapper (layermap), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and OFDM (Orthogonal Frequency Division Multiplexing) signal Generation (Generation) sequentially performed by the first bit block.

As one embodiment, the channel coding includes rate matching, and the number of REs included in the first frequency resource is used for the rate matching.

As an embodiment, a first modulation coding scheme is used for the channel coding.

As one embodiment, the transmission of the first wireless signal is unlicensed (Grant-Free).

As one embodiment, the transmission of the first wireless signal is Contention-Based.

As an embodiment, the alternative time-frequency Resource is composed of a positive integer number of REs (Resource elements).

As an embodiment, the alternative time-frequency resource comprises a positive integer number of consecutive multicarrier symbols in time domain.

As an embodiment, the alternative time-frequency resource comprises a positive integer number of subcarriers in the frequency domain.

As an embodiment, the alternative time-frequency resource comprises a positive integer number of PRBs (Physical resource blocks).

As one embodiment, the multicarrier symbol is an OFDM symbol.

As an embodiment, the multicarrier symbol is an SC-FDMA (Single Carrier frequency division Multiple Access) symbol.

As an embodiment, the MultiCarrier symbol is an FBMC (Filter Bank MultiCarrier) symbol.

As an embodiment, the number of REs (Resource elements) included in at least two of the K candidate time-frequency resources is different.

As an embodiment, the number of the time-frequency resource blocks included in any two of the K candidate time-frequency resources is different.

As an embodiment, a first candidate time-frequency resource and a second candidate time-frequency resource exist in the K candidate time-frequency resources, and the first candidate time-frequency resource and the second candidate time-frequency resource include the same number of time-frequency resource blocks.

As an embodiment, of the X candidate time-frequency resources, the candidate time-frequency resources other than the K candidate time-frequency resources are used for uplink transmission of UEs other than the UE.

As an embodiment, the time-frequency Resource Block corresponds to a PRB (Physical Resource Block).

As an embodiment, the time-frequency resource block corresponds to 1ms (millisecond) in the time domain and one subcarrier in the frequency domain.

As an embodiment, the time-frequency resource block corresponds to a positive integer number of PRBs consecutive in the frequency domain.

As an embodiment, the time-frequency resource block corresponds to a minimum time-frequency resource unit for transmitting the first wireless signal.

As an embodiment, each of the N time-frequency resource blocks belongs to at least one of the X alternative time-frequency resources.

As an embodiment, the time-frequency Resource block is composed of a positive integer number of REs (Resource elements).

As an embodiment, the time-frequency resource block comprises a positive integer number of consecutive multicarrier symbols in time domain.

As an embodiment, the time-frequency resource block includes a positive integer number of consecutive subcarriers in the frequency domain.

Specifically, according to one aspect of the present application, the method is characterized by further comprising the steps of:

-step b.

Wherein the first signaling is used to determine the X alternative time-frequency resources.

As an example, the above method has the benefits of: through the first signaling, the base station flexibly configures and adjusts resources for unlicensed uplink transmission to adapt to actual requirements.

In an embodiment, the first wireless signal employs a first modulation and coding scheme, and the first modulation and coding scheme belongs to a first modulation and coding scheme set. The first modulation and coding scheme set comprises a positive integer modulation and coding scheme, and the positive integer modulation and coding scheme is determined by the first signaling or is fixed.

As an embodiment, the first time-frequency resource occupies P time-frequency resource blocks, where P is a positive integer, and P belongs to a first resource size set. The first set of resource sizes includes P1 positive integers.

As a sub-embodiment of this embodiment, the P1 is equal to the K. The K alternative time frequency resources correspond to K different time frequency resource sizes.

As a sub-embodiment of this embodiment, the P1 positive integers are fixed, or the P1 positive integers are determined by the first signaling.

As an additional embodiment of this sub-embodiment, the first signaling indicates the P1 positive integers.

As an embodiment, the time-frequency resource block in the present application occupies a positive integer number of REs (resource elements). The RE occupies one subcarrier in the frequency domain, and the RE occupies one multicarrier symbol in the time domain.

As a sub-embodiment of this embodiment, the time-frequency resource block occupies a plurality of continuous subcarriers in the frequency domain.

As a sub-embodiment of this embodiment, the time-frequency resource block occupies a plurality of consecutive multicarrier symbols in the time domain.

As a sub-embodiment of this embodiment, the Multi-Carrier symbol is one of { an OFDM symbol, an SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol, an FBMC (Filter Bank Multi-Carrier) symbol, an OFDM symbol including a CP, a DFT-s-OFDM (Discrete Fourier Transform spread Orthogonal Frequency Division multiplexing) symbol including a CP }.

As an embodiment, the first signaling indicates a first time-frequency resource pool, which is periodically distributed. The first time-frequency resource pool comprises a first time-frequency resource set, and the time-frequency resource blocks in the X alternative time-frequency resources all belong to the first time-frequency resource set.

As a sub-embodiment of this embodiment, the first set of time-frequency resources is contiguous in the time domain.

As a sub-embodiment of this embodiment, the first set of time-frequency resources and the X candidate time-frequency resources include the same positive integer number of time-frequency resource blocks.

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first signaling is RRC (Radio Resource Control) signaling.

As one embodiment, the first signaling is UE-Specific.

As one embodiment, the first signaling is Cell-Specific (Cell-Specific).

As an embodiment, the first signaling is specific to a TRP (Transmission Reception Point).

As an embodiment, the first signaling is Beam-specific or Beam-Group-specific.

Specifically, according to one aspect of the present application, the method is characterized in that the step a further includes the following steps:

step A0. transmits the second radio signal on the second time-frequency resource.

Wherein a first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of { time-domain position, frequency-domain position } of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target sequence set and an identity of the UE is used to determine the K candidate time-frequency resources from the X candidate time-frequency resources.

As an embodiment, the above method is characterized in that: and establishing a relation between the first sequence and the K alternative time frequency resources. The first sequence corresponds to a Preamble sequence, and when the UE determines the first sequence, the positions of the corresponding K candidate time-frequency resources in the X candidate time-frequency resources are correspondingly determined. This approach facilitates resource allocation for unlicensed uplink transmission and reduces the complexity of base station reception.

As an example, another peculiarity of the above method consists in: and the target sequence set is linked with the position of the second time frequency resource in the second time frequency resource set. The target sequence set is used for uplink transmission aiming at different requirements, so that the base station can conveniently adjust the number of users which can be supported by the unlicensed uplink transmission, and the collision probability of selected resources among the UE is effectively reduced.

As one embodiment, the first wireless signal is a data channel, the first wireless signal includes a CRC (Cyclic Redundancy Check), the CRC is scrambled by one of { an identity of the UE, an index of the first sequence in the target sequence set }.

As an embodiment, the second wireless signal corresponds to a Preamble sequence in a physical layer.

As an embodiment, the second wireless Signal corresponds to DMRS (demodulation reference Signal) at a physical layer.

As an embodiment, the Identity of the UE is related to one of a C-RNTI (Cell-Radio network Temporary Identity) and an S-TMSI (SAE-Temporary Mobile registration Identity) of the UE, and an M-TMSI (MME-TMSI, MME Temporary Mobile registration Identity).

As a sub-embodiment of this embodiment, the SAE corresponds to a System Architecture Evolution (System Architecture Evolution).

As a sub-embodiment of this embodiment, the MME corresponds to a Mobility Management Entity (Mobility Management Entity).

As an embodiment, the set of target sequences is used to determine a time-domain position of the second time-frequency resource in the second set of time-frequency resources.

As an embodiment, the set of target sequences is used to determine the frequency domain location of the second time-frequency resource in the second set of time-frequency resources.

As an embodiment, the second set of time-frequency resources includes M target time-frequency resources, and the M target time-frequency resources correspond to the M sets of feature sequences one to one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As a sub-embodiment of this embodiment, the indexes of the target sequence set in the M feature sequence sets are equal to the indexes of the second time-frequency resources in the M target time-frequency resources.

As an embodiment, the index of the first sequence in the target sequence set is used to determine the K candidate time-frequency resources from the X candidate time-frequency resources.

As an embodiment, the identity of the UE is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

As an embodiment, the UE selects the first sequence from the set of target sequences by itself.

As an embodiment, the UE selects the first sequence from the set of target sequences according to an identity of the UE.

As one embodiment, the first sequence includes a pseudo-random sequence.

In one embodiment, the first sequence comprises a Zadoff-Chu sequence.

As an embodiment, the first sequence includes a CP (Cyclic Prefix).

Specifically, according to an aspect of the present application, the method is characterized in that the step B further includes the steps of:

step B0. receives the second signaling.

Wherein the second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As an example, the above method has the benefits of: and the base station configures and adjusts the second time-frequency resource set and the corresponding M characteristic sequence sets, and further reasonably configures the time-frequency resources and the sequence resources occupied by the leader sequence for the unlicensed uplink transmission according to actual requirements so as to optimize the performance of the unlicensed uplink transmission.

As an embodiment, the second signaling indicates a second time-frequency resource pool, which is periodically distributed. The second time frequency resource pool comprises the second time frequency resource set.

As a sub-embodiment of this embodiment, the second set of time-frequency resources is contiguous in the time domain.

As an embodiment, the second signaling is physical layer signaling.

As one embodiment, the second signaling is UE-specific.

As one embodiment, the second signaling is cell-specific.

As one embodiment, the second signaling is TRP specific.

As an embodiment, the second signaling is Beam-specific or the first signaling is Beam-Group-specific.

Specifically, according to an aspect of the present application, the method is characterized in that, for a plurality of candidate time-frequency resources composed of a given number of time-frequency resource blocks among the X candidate time-frequency resources, the time-frequency resource blocks can only belong to one candidate time-frequency resource among the plurality of candidate time-frequency resources at most. The given number is a positive integer.

As an embodiment, the above method is characterized in that: for a plurality of alternative time frequency resources composed of the given number of time frequency resource blocks, the time frequency resource blocks contained in any two alternative time frequency resources in the plurality of alternative time frequency resources are all different.

As an example, the above method has the benefits of: when the K alternative time-frequency resources corresponding to one UE correspond to K different Y, the method effectively reduces the Blocking (Blocking) probability among the alternative time-frequency resources corresponding to different UEs, and further improves the uplink frequency spectrum efficiency.

As an embodiment, the given number is the number of the time-frequency resource blocks comprised in any of the alternative time-frequency resources.

As one embodiment, the X is greater than the N.

As an embodiment, the K candidate time-frequency resources include K different numbers of time-frequency resource blocks, and each of the K candidate time-frequency resources includes a specific time-frequency resource block set, and the specific time-frequency resource block set includes K2 time-frequency resource blocks. The index of the starting time frequency resource block in the K2 time frequency resource blocks in the N time frequency resource blocks is related to at least one of { the index of the first sequence in the target sequence set, the identity of the UE }.

As a sub-embodiment of this embodiment, said K2 is equal to 1.

As a sub-embodiment of this embodiment, the K2 time-frequency resource blocks are consecutive in the frequency domain.

As a sub-embodiment of this embodiment, the starting time-frequency resource block is the time-frequency resource block with the smallest central frequency point among the K2 time-frequency resource blocks.

As an embodiment, the target candidate time-frequency resource belongs to the K candidate time-frequency resources, the target candidate time-frequency resource occupies L time-frequency resource blocks, and indexes of the L time-frequency resource blocks in the N time-frequency resource blocks are determined by the following formula:

wherein EmodF represents the remainder of dividing E by F,

represents the largest non-negative integer no greater than G. i is a non-negative integer not less than 0 and less than L.

As a sub-embodiment of this embodiment, the W_JEqual to the ID of the UE.

As a sub-embodiment of this embodiment, the W_JIs equal to the index of the first sequence in the set of target sequences.

As a sub-embodiment of this embodiment, the W_JDetermined by the following equation:

W_J＝(A·W_J-1)mod D

wherein, W_-1And the ID corresponding to the UE. A and D are fixed integers, J corresponds to the subframe serial number of the subframe where the target alternative time frequency resource is located, or J corresponds to the time slot serial number of the time slot where the target alternative time frequency resource is located.

As an additional example of this sub-embodiment, said a equals 39827 and said D equals 65537.

As an embodiment, the "for a plurality of candidate time-frequency resources composed of a given number of time-frequency resource blocks in the X candidate time-frequency resources, the time-frequency resource block can only belong to one candidate time-frequency resource in the plurality of candidate time-frequency resources at most" means: the given time frequency resource block does not belong to a first alternative time frequency resource and a second alternative time frequency resource at the same time, the first alternative time frequency resource and the second alternative time frequency resource both belong to the X alternative time frequency resources, and the first alternative time frequency resource and the second alternative time frequency resource are any two alternative time frequency resources containing the same number of time frequency resource blocks. The given time frequency resource block is any one of the time frequency resource blocks belonging to the X alternative time frequency resources in the first time frequency resource set.

Specifically, according to an aspect of the present application, the step a further includes the steps of:

-a step a1. determining the first time-frequency resource from the K alternative time-frequency resources.

The first wireless signal adopts a first modulation coding mode. At least one of the Y and the first modulation and coding scheme is used to determine the first time-frequency resource.

As an embodiment, the first wireless signal adopts a first modulation and coding scheme. At least one of the Y and the first modulation and coding scheme is used to determine the first time-frequency resource from the K candidate time-frequency resources.

As an embodiment, the above embodiment has advantages in that: and the UE determines the first time-frequency resource according to at least one of the Y and the first modulation coding mode, so that the size of the occupied time-frequency resource is determined according to the bit number of actual uplink transmission and/or the modulation coding mode. And when multiple resource sizes exist in the K alternative time frequency resources, the UE adaptively selects a proper resource size, and the uplink transmission efficiency is improved.

In one embodiment, the first Modulation and coding scheme is indicated by an MCS (Modulation and coding Status) of uplink transmission.

As an embodiment, the first modulation and coding scheme includes a first modulation scheme and a first coding rate, the first modulation scheme is one of QPSK, 16QAM, 64QAM, and 256QAM, and the first coding rate is greater than 0 and less than or equal to 1.

As an embodiment, the UE determines the first time-frequency resource from the K candidate time-frequency resources only by the Y and the first modulation and coding scheme.

As an embodiment, the UE determines the first time-frequency resource from the K alternative time-frequency resources only through the Y.

As an embodiment, Y belongs to a first bit length set, where the first bit length set includes K positive integers, and the K positive integers are in one-to-one correspondence with the K candidate time-frequency resources.

As an embodiment, Y belongs to the second set of bit lengths, and the first modulation and coding scheme belongs to the first set of modulation and coding schemes. The second set of bit lengths comprises K1 positive integers, the first set of modulation coding schemes comprises K2 modulation coding schemes, and the product of K1 and K2 is equal to K. And K1 × K2 combinations formed by the first modulation and coding mode set and the second bit length set correspond to the K candidate time frequency resources one by one. The K1 and the K2 are both positive integers.

The application discloses a method used in a base station in wireless communication, which comprises the following steps:

-step a. receiving a first wireless signal on a first time-frequency resource.

As an embodiment, the first bit block is passed by a physical layer of the base station to an upper layer of the base station.

As an embodiment, the receiving the first wireless signal on the first time-frequency resource refers to: the base station detects the first wireless signal in the K alternative time frequency resources.

As a sub-embodiment of this embodiment, the base station sequentially detects the first radio signal in each of the K candidate time-frequency resources.

-step b.

step A0. receives a second radio signal on a second time-frequency resource.

Wherein a first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target set of sequences and an identification of a sender of the first wireless signal is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

As an embodiment, the receiving the second wireless signal on the second time-frequency resource refers to: the base station detects the second wireless signal in the second set of time-frequency resources.

As a sub-embodiment of this embodiment, the detection is a correlation detection.

As a sub-embodiment of this embodiment, the detecting is used to determine the first sequence.

step B0. sends the second signaling.

As an embodiment, the receiving the second wireless signal on the second time-frequency resource refers to: and the base station sequentially detects the second wireless signals in the M target time frequency resources.

The first wireless signal adopts a first modulation coding mode. The first time-frequency resource is used to determine at least one of the Y and the first modulation coding scheme.

As an embodiment, the base station determines the first time-frequency resource in a polling manner, that is, the base station sequentially blindly detects the first radio signal in the K candidate time-frequency resources.

As an embodiment, the base station determines the first time-frequency resource according to uplink control information.

The application discloses a user equipment used in wireless communication, which comprises the following modules:

-a first sending module: for transmitting a first wireless signal on a first time-frequency resource.

As an embodiment, the above user equipment for use in wireless communication is characterized in that the first bit block is delivered by a MAC layer of the UE to a physical layer of the UE.

As an embodiment, the user equipment for wireless communication further includes:

-a first receiving module: for receiving the first signaling.

As an embodiment, the above user equipment for wireless communication is characterized in that the first sending module is further configured to send a second wireless signal on a second time-frequency resource. A first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target sequence set and an identity of the UE is used to determine the K candidate time-frequency resources from the X candidate time-frequency resources.

As an embodiment, the above user equipment for use in wireless communication is characterized in that the first receiving module is further configured to receive a second signaling. The second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As an embodiment, the above user equipment for wireless communication is characterized in that, for a plurality of the candidate time-frequency resources composed of a given number of the time-frequency resource blocks, among the X candidate time-frequency resources, the time-frequency resource blocks can only belong to one of the candidate time-frequency resources at most. The given number is a positive integer.

As an embodiment, the above user equipment for wireless communication is characterized in that the first sending module is further configured to determine the first time-frequency resource from the K alternative time-frequency resources. The first wireless signal adopts a first modulation coding mode. At least one of the Y and the first modulation and coding scheme is used to determine the first time-frequency resource.

The application discloses a base station device for wireless communication, which comprises the following modules:

-a second receiving module: for receiving a first wireless signal on a first time-frequency resource.

As an embodiment, the base station apparatus for wireless communication described above further includes:

-a second sending module: for transmitting the first signaling.

As an embodiment, the base station device for wireless communication is characterized in that the second receiving module is further configured to receive a second wireless signal on a second time-frequency resource. A first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target set of sequences and an identification of a sender of the first wireless signal is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

As an embodiment, the above base station device for use in wireless communication is characterized in that the second sending module is further configured to send a second signaling. The second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As an embodiment, the above base station device for wireless communication is characterized in that, for a plurality of alternative time-frequency resources composed of a given number of time-frequency resource blocks in the X alternative time-frequency resources, the time-frequency resource blocks can only belong to one alternative time-frequency resource in the plurality of alternative time-frequency resources at most. The given number is a positive integer.

As an embodiment, the above base station device for wireless communication is characterized in that the second receiving module is further configured to: and determining the first time-frequency resource from the K alternative time-frequency resources. The first wireless signal adopts a first modulation coding mode. The first time-frequency resource is used to determine at least one of the Y and the first modulation coding scheme.

Compared with the prior art, the method has the following technical advantages:

designing a similar Nested resource allocation rule to reduce the probability of collision of the wireless resources occupied by the terminal, and being particularly suitable for the uplink Grant-free scene.

Only the K candidate time-frequency resources of the X candidate time-frequency resources correspond to the UE, and the candidate time-frequency resources other than the K candidate time-frequency resources of the X candidate time-frequency resources belong to other UEs. This way, Collision (Collision) caused by different UEs occupying the same time-frequency resource can be effectively avoided.

For a plurality of candidate time-frequency resources consisting of a given number of time-frequency resource blocks, the time-frequency resource blocks contained in any two of the candidate time-frequency resources are all different. When the K alternative time-frequency resources corresponding to one UE correspond to K different Y, the method effectively reduces the Blocking (Blocking) probability among the alternative time-frequency resources corresponding to different UEs, and further improves the uplink frequency spectrum efficiency.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of a first wireless signal transmission according to an embodiment of the application;

FIG. 2 shows a schematic diagram of a given set of time-frequency resources, according to an embodiment of the present application;

FIG. 3 shows a schematic diagram of K alternative time-frequency resources according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of X alternative time-frequency resources according to an embodiment of the present application;

FIG. 5 shows a block diagram of a processing device in a UE according to an embodiment of the present application;

fig. 6 shows a block diagram of a processing means in a base station according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a third time-frequency resource according to an embodiment of the application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of a first wireless signal transmission according to the present application, as shown in fig. 1. In fig. 1, base station N1 is a serving cell maintaining base station for UE U2. The steps identified by blocks F0 and F1, respectively, are optional.

For theBase station N1Second signaling is transmitted in step S10, first signaling is transmitted in step S11, a second wireless signal is received on a second time-frequency resource in step S12, and the first wireless signal is received on a first time-frequency resource in step S13.

For theUE U2The second signaling is received in step S20, the first signaling is received in step S21, the second wireless signal is transmitted on the second time-frequency resource in step S22, and the first wireless signal is transmitted on the first time-frequency resource in step S23.

In embodiment 1, the first time-frequency resource is one of K candidate time-frequency resources, and the K candidate time-frequency resources belong to X candidate time-frequency resources. A first block of bits is used to generate the first wireless signal, the first block of bits comprising Y bits. The X is a positive integer, and the K is a positive integer not greater than the X. The first time-frequency resource set comprises N time-frequency resource blocks, and the alternative time-frequency resources comprise positive integer numbers of the time-frequency resource blocks. The third time frequency resource is the optional time frequency resource composed of more than Q time frequency resource blocks in any one of the X optional time frequency resources, Q time frequency resource blocks exist in the third time frequency resource, and at least one optional time frequency resource except the third time frequency resource in the X optional time frequency resources comprises the Q time frequency resource blocks. Q is a positive integer greater than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q. And N and Y are positive integers respectively. The first signaling is used for determining the X alternative time-frequency resources. A first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target sequence set and an identification of the UE U2 is used to determine the K candidate time-frequency resources from the X candidate time-frequency resources. The second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources. For a plurality of candidate time-frequency resources composed of a given number of time-frequency resource blocks in the X candidate time-frequency resources, the time-frequency resource block can only belong to one candidate time-frequency resource of the plurality of candidate time-frequency resources at most. The given number is a positive integer.

As a sub-embodiment, the physical layer Channel corresponding to the first wireless signal is a PUSCH (physical uplink Shared Channel) or a sPUSCH (Short Latency physical uplink Shared Channel).

As a sub-embodiment, the Physical layer Channel corresponding to the first wireless signal is NB-PUSCH (Narrow-Band Physical Uplink Shared Channel).

As a sub-embodiment, the transmission channel corresponding to the first wireless signal is an UL-SCH (Uplink shared channel).

As a sub-embodiment, the first signaling belongs to SIB (System Information Block).

As a sub-embodiment, the first signaling belongs to broadcast information.

As a sub-embodiment, the second signaling is RRC signaling.

As a sub-embodiment, the second signaling belongs to a SIB.

As a sub-embodiment, the second signaling belongs to broadcast information.

Example 2

Embodiment 2 illustrates a schematic diagram of a given set of time-frequency resources according to the present application. In fig. 2, the given time-frequency resource set belongs to a given time-frequency resource pool, the given time-frequency resource set includes a continuous positive integer number of PRBs in a frequency domain, and the given time-frequency resource set includes a continuous positive integer number of multicarrier symbols in a time domain. The given time-frequency resource pool is configured periodically, the period corresponding to t (ms). The given time-frequency resource belongs to a given set of time-frequency resources.

As a sub-embodiment, the given time-frequency resource set corresponds to the first time-frequency resource set in the present application, the given time-frequency resource pool corresponds to the first time-frequency resource pool in the present application, and the given time-frequency resource corresponds to the first time-frequency resource in the present application.

As a sub-embodiment, the given time-frequency resource set corresponds to the second time-frequency resource set in the present application, the given time-frequency resource pool corresponds to the second time-frequency resource pool in the present application, and the given time-frequency resource corresponds to the second time-frequency resource in the present application.

As a sub-embodiment, T is a positive integer.

As a sub-embodiment, T is a positive integer multiple of 0.5.

As a sub-embodiment, the given set of time-frequency resources occupies a positive integer number of consecutive multicarrier symbols in the time domain.

Example 3

Embodiment 3 illustrates a schematic diagram of K alternative time-frequency resources according to an embodiment of the present application. As shown in fig. 3, the first time-frequency resource set includes N time-frequency resource blocks, and the K candidate time-frequency resources correspond to { candidate time-frequency resource #1, candidate time-frequency resources #2, …, and candidate time-frequency resource # K }. The alternative time frequency resource #1 occupies P _1 continuous time frequency resource blocks, the alternative time frequency resource #2 occupies P _2 continuous time frequency resource blocks, and so on, the alternative time frequency resource # K occupies P _ K continuous time frequency resource blocks. And the starting time frequency resource blocks occupied by the K alternative time frequency resources in the N time frequency resource blocks are the same. And the starting time frequency resource block corresponds to one time frequency resource block with the minimum center frequency in the time frequency resource blocks occupied by the K alternative time frequency resources. The numbers from 0 to (N-1) shown in the figure correspond to the N time-frequency resource blocks with the central frequency points from low to high in sequence.

As a sub-embodiment, the time-frequency resource block occupies one subcarrier in the frequency domain and occupies continuous 8ms in the time domain.

As a sub-embodiment, the time-frequency resource block corresponds to a PRB.

As a sub-embodiment, K is equal to 4, and the K candidate time-frequency resources occupy {1 time-frequency resource block, 3 time-frequency resource blocks, 6 time-frequency resource blocks, and 12 time-frequency resource blocks }, respectively.

As a sub-embodiment, the kth alternative time-frequency resource of the K alternative time-frequency resources occupies a time-frequency resource block of power (K-1) of 2. The K is not less than 1 and not more than K.

As a sub-embodiment, the P _1, the P _2 to the P _ K are all positive integers, and the P _1, the P _2 to the P _ K are all configured by high layer signaling.

Example 4

Embodiment 4 illustrates a schematic diagram of X alternative time-frequency resources according to an embodiment of the present application. As shown in FIG. 4, the first set of time-frequency resources comprises N time-frequency resourcesAnd the alternative time frequency resources comprise a positive integer number of the time frequency resource blocks, and the time frequency resource blocks in the X alternative time frequency resources all belong to the first time frequency resource set. { index of the first sequence in the target sequence set, identity of the UE } is used to determine W_JAnd the target alternative time frequency resource belongs to K alternative time frequency resources belonging to the UE in the X alternative time frequency resources. The target alternative time frequency resource occupies L time frequency resource blocks, and the sequence numbers of the L time frequency resource blocks in the N time frequency resource blocks are determined by the following formula:

wherein E mod F represents the remainder of E divided by F,

represents the largest non-negative integer no greater than G. i is a non-negative integer not less than 0 and less than L. It shows that W is equal to 100 when N_JK alternative time-frequency resources corresponding to 1, and W_JAnd when the number of the candidate time frequency resources is equal to 2, corresponding K candidate time frequency resources are obtained. The alternative time frequency resources shown in the figure all belong to the X alternative time frequency resources. The L is equal to one of {1,2,4,8 }. The numbers 0 to 99 shown in the figure sequentially correspond to the N time-frequency resource blocks with the central frequency points from low to high.

As a sub-embodiment, the identity of the UE is used to determine W_J。

As a sub-embodiment, the index of the first sequence in the set of target sequences is used to determine W_J。

As a sub-embodiment, L is a positive integer, and the corresponding smallest positive integer of L is equal to 1.

Example 5

Embodiment 5 illustrates a block diagram of a processing device in a UE, as shown in fig. 5. In fig. 5, the UE processing apparatus 100 is mainly composed of a first sending module 101 and a first receiving module 102.

-a first sending module 101: for transmitting a first wireless signal on a first time-frequency resource;

the first receiving module 102: for receiving the first signaling.

In embodiment 5, the first time-frequency resource is one of K candidate time-frequency resources, and the K candidate time-frequency resources belong to X candidate time-frequency resources. A first block of bits is used to generate the first wireless signal, the first block of bits comprising Y bits. The X is a positive integer, and the K is a positive integer not greater than the X. The first time-frequency resource set comprises N time-frequency resource blocks, and the alternative time-frequency resources comprise positive integer numbers of the time-frequency resource blocks. The third time frequency resource is the optional time frequency resource composed of more than Q time frequency resource blocks in any one of the X optional time frequency resources, Q time frequency resource blocks exist in the third time frequency resource, and at least one optional time frequency resource except the third time frequency resource in the X optional time frequency resources comprises the Q time frequency resource blocks. Q is a positive integer greater than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q. And N and Y are positive integers respectively. The first signaling is used for determining the X alternative time-frequency resources.

As a sub-embodiment, the first sending module 101 is further configured to send a second wireless signal on a second time-frequency resource. A first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target sequence set and an identity of the UE is used to determine the K candidate time-frequency resources from the X candidate time-frequency resources.

As a sub embodiment, the first receiving module 102 is further configured to receive a second signaling. The second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As a sub-embodiment, the first bit block is delivered by the MAC layer of the user equipment to the physical layer of the user equipment.

Example 6

Embodiment 6 is a block diagram illustrating a processing apparatus in a base station device, as shown in fig. 6. In fig. 6, the base station device processing apparatus 200 mainly comprises a second receiving module 201 and a second sending module 202.

The second receiving module 201: for receiving a first wireless signal on a first time-frequency resource;

the second sending module 202: for transmitting the first signaling.

In embodiment 6, the first time-frequency resource is one of K candidate time-frequency resources, and the K candidate time-frequency resources belong to X candidate time-frequency resources. A first block of bits is used to generate the first wireless signal, the first block of bits comprising Y bits. The X is a positive integer, and the K is a positive integer not greater than the X. The first time-frequency resource set comprises N time-frequency resource blocks, and the alternative time-frequency resources comprise positive integer numbers of the time-frequency resource blocks. The third time frequency resource is the optional time frequency resource composed of more than Q time frequency resource blocks in any one of the X optional time frequency resources, Q time frequency resource blocks exist in the third time frequency resource, and at least one optional time frequency resource except the third time frequency resource in the X optional time frequency resources comprises the Q time frequency resource blocks. Q is a positive integer greater than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q. And N and Y are positive integers respectively. The first signaling is used for determining the X alternative time-frequency resources.

As a sub-embodiment, the second receiving module is further configured to receive a second wireless signal on a second time-frequency resource. A first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources. At least one of an index of the first sequence in the target set of sequences and an identification of a sender of the first wireless signal is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

As a sub-embodiment, the second sending module is further configured to send a second signaling. The second signaling is used to determine the second set of time-frequency resources. The second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one. The target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

As a sub-embodiment, the first bit block is passed by the physical layer of the base station to the higher layers of the base station.

Example 7

Embodiment 7 illustrates a schematic diagram of a third time-frequency resource according to an embodiment of the present application. As shown in fig. 7, the rectangular frame in the figure corresponds to the alternative time frequency resource, and the rectangular frame filled with oblique lines corresponds to the third time frequency resource. The numbers filled in the rectangular frame correspond to the indexes of the time frequency resource blocks occupied by the alternative time frequency resources.

In fig. 7, for UE-1, time-frequency resource block {0}, time-frequency resource block {0,1,2,3,4,5,6,7} are 4 alternative time-frequency resources of the UE-1.

For UE-2, the time frequency resource block {2}, the time frequency resource block {2,3,4,5,6,7,8,9} is 4 alternative time frequency resources of the UE-2.

For UE-3, a time-frequency resource block {4}, a time-frequency resource block {4,5,6,7}, and a time-frequency resource block {4,5,6,7,8,9,10,11} are 4 alternative time-frequency resources of the UE-3.

For UE-4, a time-frequency resource block {6}, a time-frequency resource block {6,7,8,9}, and a time-frequency resource block {6,7,8,9,10,11,12,13} are 4 alternative time-frequency resources of the UE-4.

As a sub-embodiment, the time-frequency resource block included in the third time-frequency resource is divided into 4 time-frequency resource block groups, which correspond to {0,1}, {2,3}, {4,5}, and {6,7}, respectively. The {0,1}, {2,3}, {4,5}, {6,7} are all alternative time-frequency resources except the third time-frequency resource. The {0,1} is an alternative resource for the UE-1, the {2,3} is an alternative resource for the UE-2, the {4,5} is an alternative resource for the UE-3, and the {6,7} is an alternative resource for the UE-4.

As a sub-embodiment, the time frequency resource block included in the third time frequency resource is divided into 2 time frequency resource block groups, which respectively correspond to {0,1,2,3}, {4,5,6,7 }. The {0,1,2,3}, {4,5,6,7} are all alternative time frequency resources except the third time frequency resource. The {0,1,2,3} is an alternative resource for the UE-1, and the {4,5,6,7} is an alternative resource for the UE-3.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE and the terminal in the present application include, but are not limited to, a mobile phone, a tablet computer, a notebook, a vehicle-mounted Communication device, a wireless sensor, a network card, an internet of things terminal, an RFID terminal, an NB-IOT terminal, a Machine Type Communication (MTC) terminal, an enhanced MTC terminal, a data card, a network card, a vehicle-mounted Communication device, a low-cost mobile phone, a low-cost tablet computer, and other wireless Communication devices. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment for use in wireless communications, comprising the steps of:

-step a. transmitting a first wireless signal on a first time-frequency resource;

the first time-frequency resource is one of K alternative time-frequency resources, and the K alternative time-frequency resources belong to X alternative time-frequency resources; a first block of bits is used to generate the first wireless signal, the first block of bits comprising Y bits; x is a positive integer, and K is a positive integer not greater than X; the first time-frequency resource set comprises N time-frequency resource blocks, and the alternative time-frequency resources comprise positive integer number of the time-frequency resource blocks; a third time frequency resource is the optional time frequency resource composed of more than Q time frequency resource blocks in any one of the X optional time frequency resources, Q time frequency resource blocks exist in the third time frequency resource, and at least one optional time frequency resource except the third time frequency resource in the X optional time frequency resources comprises the Q time frequency resource blocks; q is a positive integer greater than 1, and the number of the time frequency resource blocks included in at least one of the X alternative time frequency resources is equal to Q; and N and Y are positive integers respectively.

2. The method of claim 1, further comprising the steps of:

-step b. receiving a first signalling;

3. The method according to claim 1 or 2, wherein said step a further comprises the steps of:

-step A0. transmitting a second radio signal on a second time-frequency resource;

wherein a first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources; at least one of an index of the first sequence in the target sequence set and an identification of the user equipment is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

4. The method of claim 3, further comprising the steps of:

-step B0. receiving the second signaling;

wherein the second signaling is used to determine the second set of time-frequency resources; the second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one; the target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

5. The method according to claim 1 or 2, wherein for a plurality of said candidate time-frequency resources consisting of a given number of said blocks of time-frequency resources of said X candidate time-frequency resources, said blocks of time-frequency resources can only belong to at most one of said candidate time-frequency resources of said plurality; the given number is a positive integer.

6. The method according to claim 1 or 2, wherein said step a further comprises the steps of:

-a step a1. determining the first time-frequency resource from the K alternative time-frequency resources;

the first wireless signal adopts a first modulation coding mode; at least one of the Y and the first modulation and coding scheme is used to determine the first time-frequency resource.

7. A method in a base station for use in wireless communications, comprising the steps of:

-a. receiving a first wireless signal on a first time-frequency resource;

8. The method of claim 7, further comprising the steps of:

-step b. sending a first signalling;

9. The method according to claim 7 or 8, wherein the step a further comprises the steps of:

-step A0. receiving a second radio signal on a second time-frequency resource;

wherein a first sequence is used for generating the second radio signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources; at least one of an index of the first sequence in the target set of sequences and an identification of a sender of the first wireless signal is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

10. The method of claim 9, further comprising the steps of:

step B0. sending a second signaling;

11. The method according to claim 7 or 8, wherein for a plurality of said candidate time-frequency resources consisting of a given number of said blocks of time-frequency resources of said X candidate time-frequency resources, said blocks of time-frequency resources can only belong to at most one of said candidate time-frequency resources of said plurality; the given number is a positive integer.

12. The method according to claim 7 or 8, wherein the step a further comprises the steps of:

the first wireless signal adopts a first modulation coding mode; the first time-frequency resource is used to determine at least one of the Y and the first modulation coding scheme.

13. A user equipment for use in wireless communications, comprising:

-a first sending module: for transmitting a first wireless signal on a first time-frequency resource;

-a first receiving module: for receiving a first signaling;

14. The UE of claim 13, wherein for a plurality of alternative time-frequency resources consisting of a given number of the blocks of time-frequency resources among the X alternative time-frequency resources, the blocks of time-frequency resources can only belong to at most one of the alternative time-frequency resources among the plurality of alternative time-frequency resources; the given number is a positive integer.

15. The UE of claim 13 or 14, wherein the first receiving module further receives a first signaling; the first signaling is used for determining the X alternative time-frequency resources.

16. The UE of claim 13 or 14, wherein the first transmitting module further transmits a second wireless signal on a second time-frequency resource; a first sequence is used for generating the second wireless signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources; at least one of an index of the first sequence in the target sequence set and an identification of the user equipment is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

17. The UE of claim 16, wherein the first receiving module further receives a second signaling; the second signaling is used to determine the second set of time-frequency resources; the second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one; the target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

18. The UE of claim 13 or 14, wherein the first transmitting module further determines the first time-frequency resource from the K candidate time-frequency resources; the first wireless signal adopts a first modulation coding mode; at least one of the Y and the first modulation and coding scheme is used to determine the first time-frequency resource.

19. A base station device for use in wireless communications, comprising:

-a second receiving module: for receiving a first wireless signal on a first time-frequency resource;

-a second sending module: for transmitting a first signaling;

20. The base station device according to claim 19, wherein for a plurality of said candidate time-frequency resources consisting of a given number of said blocks of time-frequency resources among said X candidate time-frequency resources, said blocks of time-frequency resources can only belong to at most one of said candidate time-frequency resources among said plurality of candidate time-frequency resources; the given number is a positive integer.

21. The base station device according to claim 19 or 20, wherein said second transmitting module further transmits a first signaling; the first signaling is used for determining the X alternative time-frequency resources.

22. The base station device according to claim 19 or 20, wherein said second receiving module further receives a second wireless signal on a second time-frequency resource; a first sequence is used for generating the second wireless signal, the first sequence belonging to a target set of sequences, the second time-frequency resource belonging to a second set of time-frequency resources, the target set of sequences being used for determining at least one of a time-domain position and a frequency-domain position of the second time-frequency resource in the second set of time-frequency resources; at least one of an index of the first sequence in the target set of sequences and an identification of a sender of the first wireless signal is used to determine the K alternative time-frequency resources from the X alternative time-frequency resources.

23. The base station device of claim 22, wherein the second sending module further sends a second signaling; the second signaling is used to determine the second set of time-frequency resources; the second time frequency resource set comprises M target time frequency resources, and the M target time frequency resources correspond to the M characteristic sequence sets one by one; the target sequence set is one of the M feature sequence sets, and the second time-frequency resource is the target time-frequency resource corresponding to the target sequence set among the M target time-frequency resources.

24. The base station device according to claim 19 or 20, wherein said second receiving module further determines said first time-frequency resource from said K alternative time-frequency resources; the first wireless signal adopts a first modulation coding mode; the first time-frequency resource is used to determine at least one of the Y and the first modulation coding scheme.