CN107343297B

CN107343297B - Method and device in wireless communication

Info

Publication number: CN107343297B
Application number: CN201610285920.1A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2016-05-01
Filing date: 2016-05-01
Publication date: 2019-12-24
Anticipated expiration: 2036-05-01
Also published as: WO2017190586A1; CN107343297A; CN110932832A; CN110932832B

Abstract

The invention discloses a method and a device in wireless communication. As an embodiment, the UE first receives the first signaling and the second signaling. And then determining a target time frequency resource block, and sending a first wireless signal on the target time frequency resource block. Wherein the target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. First signaling is used to determine the first resource pool and second signaling is used to determine the second resource pool. { the first signaling, the second signaling }, the first signaling being cell-specific. The invention enables the UE to select the proper time-frequency resource from the two resource pools for sending the wireless signal. The { maximum multiplexing UE number, occupied time frequency resource size } corresponding to the two resource pools can be independently set, and further balance between performance and transmission efficiency is achieved.

Description

Method and device in wireless communication

Technical Field

The present application relates to a transmission scheme of wireless signals in a wireless communication system, and more particularly, to a method and apparatus for uplink transmission based on cellular communication.

Background

In a conventional wireless communication system based on a digital modulation scheme, for example, a 3GPP (3rd generation partnership Project) cellular system, uplink wireless signal transmission is scheduled by a base station. For the next generation wireless communication system, IoT (Internet of Things) communication may become an important application scenario.

Features of IoT communications include: the number of terminal devices is very large, the standby time supported by the terminal devices is long (power consumption is low), the cost of the terminal devices is low, and the like. Traditional schedule-based upstream transmission is no longer applicable to IoT for reasons including:

the signaling required for downlink scheduling can severely reduce transmission efficiency. Especially considering that the number of information bits involved in a typical one-time IoT upstream transmission is usually small.

Increase the power consumption of the terminal equipment and reduce the standby time. In the existing system, a terminal device first sends signaling such as SR (Scheduling Request) and then can send uplink transmission.

Increase the uplink transmission delay. In some special scenarios, IoT communication requires lower transmission latency, and existing scheduling-based uplink transmission cannot meet this requirement.

In view of the above problem, CB (content Based) uplink transmission is proposed, i.e., the UE can transmit uplink information without the scheduling of the base station. If no collision (between two or more UEs) occurs, the base station can correctly decode the uplink information.

Disclosure of Invention

The inventor finds out through research that the base station needs to reserve corresponding time-frequency resources for CB uplink transmission. However, since the base station does not determine the size of the time-frequency resource required for actually transmitting the uplink information, it is not able to reserve a proper amount of time-frequency resources.

Further, when uplink signals transmitted by two or more UEs (User Equipment) collide, the base station cannot correctly decode the uplink signals, which reduces transmission efficiency. Especially when the number of UEs is very large, the probability of collision increases significantly.

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 in UE for wireless communication, which comprises the following steps:

-step a. receiving a first signaling and a second signaling.

And step B, determining a target time frequency resource block, and transmitting a first wireless signal on the target time frequency resource block.

Wherein first signaling is used to determine the first resource pool and second signaling is used to determine the second resource pool. The target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. { the first signaling, the second signaling }, the first signaling being Cell-Specific (Cell Specific).

As an embodiment, in the step B, the UE selects the target time-frequency resource block from { the first resource pool, the second resource pool }.

In CB uplink transmission, an intuitive solution is that a base station reserves a resource pool for a terminal, and the terminal selects a suitable time-frequency resource from the reserved time-frequency pool to send a wireless signal. In the above embodiment, the UE can select an appropriate time-frequency resource from two resource pools (instead of one resource pool) for transmitting a wireless signal.

As an embodiment, the resource pool includes a plurality of time intervals in a time domain, and any two time intervals of the plurality of time intervals are discontinuous in the time domain. As an example, the duration of the time interval does not exceed 1 millisecond.

As an embodiment, the resource pool includes a plurality of sub-bands in a frequency domain, and any two sub-bands of the plurality of sub-bands are discontinuous in the frequency domain.

As an embodiment, the resource pool is contiguous in the frequency domain.

As an embodiment, the first wireless Signal includes at least one of { Uplink Information, UCI (Control Information on Uplink), RS (Reference Signal) }.

As a sub-embodiment of the above embodiment, the Uplink information is transmitted on a PUSCH (Physical Uplink Shared Channel).

As a sub-embodiment of the foregoing embodiment, the transmission Channel corresponding to the UpLink information is an UL-SCH (UpLink Shared Channel).

As a sub embodiment, the uplink information corresponds to a Transport Block (TB).

As an embodiment, the cell-specific refers to: all terminals in the cell with the corresponding functionality may receive.

As an embodiment, the first signaling is cell-specific refers to: the logical Channel occupied by the first signaling is a BCCH (Broadcast Control Channel).

As an embodiment, the first signaling is cell-specific refers to: the transport Channel occupied by the first signaling is BCH (Broadcast Channel).

As an embodiment, the first signaling is cell-specific refers to: the first signaling is carried by an SIB (System Information Block).

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

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

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

As an embodiment, the second signaling is UE Specific (Specific).

As an embodiment, the second signaling is terminal group Specific (Specific). The terminal group to which the second signaling is directed includes one or more terminals, and the terminal group to which the second signaling is directed includes the UE.

In the above two embodiments, the first resource pool may be occupied by all terminals with corresponding functions in the cell, and the second resource pool may be occupied by only a specific terminal or terminals. Namely: the uplink transmissions in the first resource pool have a higher probability of colliding, and the uplink transmissions in the first resource pool have a lower probability of colliding. However, the first resource pool may be higher in real-time or occupy less resources (than the resource pool reserved for all terminal groups). Thus, the combination of the first resource pool and the second resource pool can balance between performance and efficiency.

As an embodiment, in the step B, the UE determines the target time-frequency resource block according to at least one of { Buffer status, upcoming first time-frequency resource in the first resource pool, upcoming first time-frequency resource in the second resource pool }. As a sub-embodiment of this embodiment, if the Buffer status meets the trigger condition of uplink transmission, the target time-frequency resource block is the first time-frequency resource to come in { the first resource pool, the second resource pool }.

As an embodiment, an MCS (Modulation and Coding Status) of the first wireless signal is configured by higher layer signaling.

As an embodiment, the Resource pool includes a plurality of RUs (Resource units), which occupy one subcarrier bandwidth in a frequency domain and occupy one multicarrier symbol duration in a time domain. As one embodiment, the multicarrier symbol is an OFDM symbol. As one embodiment, the multicarrier symbols are SC-FDMA symbols. As an embodiment, the multicarrier symbol is an FBMC (Filter Bank Multi Carrier) symbol. As an example, the subcarrier bandwidth is one of {15kHz (kilohertz), 17.5kHz, 17.06kHz, 7.5kHz, 2.5kHz }.

As an embodiment, the first signaling indicates the first time-frequency resource, and the second signaling indicates the second time-frequency resource.

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

-step c.

Wherein the third signaling includes G information bits, a target information bit is 1 of the G information bits, and the target information bit is used to determine whether the first wireless signal is decoded correctly.

As an embodiment, the G information bits are for G terminals, respectively, and the UE is one of the G terminals.

In the above embodiment, even if some of the G terminals do not perform uplink transmission, corresponding information bits are reserved in the second signaling. The above aspect avoids the problem of downlink HARQ-ACK confusion due to missed detection of wireless signals by the base station.

In particular, according to one aspect of the present application, the first radio signal includes a positive integer number of modulation symbols, and the modulation symbols correspond to one or more bits. The target time-frequency resource block belongs to the first resource pool, and the modulation symbols are mapped to Q1 RUs through a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, and the modulation symbols are mapped to Q2 RUs through a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and one OFDM symbol duration in the time domain. The Q1 and the Q2 are each positive integers greater than 1.

As an embodiment, if the target time-frequency resource block belongs to the first resource pool, the modulation symbols are mapped to Q1 RUs by a first spreading (Spread) sequence; if the target time frequency resource block belongs to the second resource pool, the modulation symbols are mapped to Q2 RUs through a second spreading sequence.

As one embodiment, the Q1 is greater than the Q2.

In the above embodiment, the length of the spreading sequence adopted by the UE may vary with the position of the target time-frequency resource block, so as to reduce collision of uplink transmission. The first resource pool may be multiplexed by more UEs than the second resource pool.

As an embodiment, the first spreading sequence is a Zadoff-Chu sequence.

As an embodiment, the first spreading sequence is a pseudo-random sequence.

As an embodiment, the second spreading sequence is a Zadoff-Chu sequence.

As an embodiment, the second spreading sequence is a pseudo-random sequence.

As an example, the subcarrier bandwidth is one of {15kHz (kilohertz), 17.5kHz, 17.06kHz, 7.5kHz, 2.5kHz }.

As one example, the duration of the one OFDM symbol is one of {1/15 milliseconds, 1/17.5 milliseconds, 1/17.06 milliseconds, 1/7.5 milliseconds, 1/2.5 milliseconds }.

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

step A0. receives the first configuration information.

Wherein the first configuration information is used to determine a first index. The first index is used to identify at least one of the second signaling, the third signaling. The first index is an integer.

As an embodiment, the first configuration information is terminal group specific, i.e. received by a plurality of terminals, the UE being one of the terminal groups.

In the above embodiment, the second signaling or the third signaling is also specific to the terminal group, so that corresponding air interface overhead is saved, and transmission efficiency is improved.

For one embodiment, the first index is used to generate the first spreading sequence.

As an embodiment, the first configuration information is indicated by higher layer signaling.

For one embodiment, the first configuration information includes the first index.

As an embodiment, the first configuration information is used to calculate the first index.

As an embodiment, the time-frequency resource occupied by the second signaling is related to the first index.

As an embodiment, the time-frequency resource occupied by the third signaling is related to the first index.

As an embodiment, a Cyclic Redundancy Check (CRC) corresponding to the second signaling and the first index are related.

As an embodiment, the CRC corresponding to the third signaling and the first index are related.

As an embodiment, a scrambling sequence adopted by a CRC corresponding to the second signaling is related to the first index.

As an embodiment, a scrambling sequence adopted by a CRC corresponding to the third signaling and the first index are correlated.

-a step a1. receiving second configuration information.

Wherein the second configuration information is used to determine a second index. The second index is used to { generate a first RS sequence, generate a first scrambling sequence, determine a position of the target information bit among the G information bits }, the first RS sequence being an RS sequence to which an RS of the first wireless signal corresponds, the first scrambling sequence being used to scramble the first wireless signal.

As an embodiment, the second index is unique within a terminal group to which the UE belongs, and terminals within the terminal group to which the UE belongs are all assigned the first index.

As an embodiment, the second index is indicated by 16 information bits.

In one embodiment, the second index is used to generate the second spreading sequence.

As one embodiment, the first index and the second index are used to generate the second spreading sequence.

For one embodiment, the second configuration information includes the second index.

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

-step a. sending the first signalling and the second signalling.

And B, performing blind detection, and receiving K wireless signals in a target time frequency resource block. One wireless signal of the K wireless signals is a first wireless signal. The K is a positive integer.

Wherein first signaling is used to determine the first resource pool and second signaling is used to determine the second resource pool. The target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. { the first signaling, the second signaling }, the first signaling being cell-specific.

As an embodiment, the K wireless signals are respectively transmitted by K terminals.

As an embodiment, in the step B, the base station performs the blind detection in the target time-frequency resource block.

As an embodiment, in the step B, the base station performs the blind detection in the first resource pool and the second resource pool.

As an embodiment, in step B, the base station performs the blind detection on G signature sequences in the target time-frequency resource block, and determines, by the base station through the blind detection, that K signature sequences in the G signature sequences are transmitted, where the K signature sequences are in one-to-one correspondence with the K wireless signals. As a sub-embodiment of this embodiment, the signature sequence is an RS sequence of an RS of the corresponding radio signal. As an embodiment, the blind detection is a coherent detection for the signature sequence.

In the above embodiment, the base station does not determine how many terminals in the target time-frequency resource block will perform uplink transmission.

-step c.

Wherein the third signaling comprises G information bits, K information bits of the G information bits are respectively used for determining whether the K wireless signals are correctly decoded, and other information bits of the G information bits indicate incorrect decoding. The target information bit is 1 information bit of the K information bits, which is used to determine whether the first wireless signal is decoded correctly. And G is a positive integer.

As one example, G is greater than 1.

step A0. sending the first configuration information.

Wherein the first configuration information is used to determine a first index. The first index is used to identify at least one of the second signaling, the third signaling. The first index is an integer. And G is a positive integer.

As one embodiment, the receiver of the first configuration information includes a sender of the first wireless signal.

As an embodiment, the receiver of the first configuration information includes G terminals.

As an embodiment, the base station sends G downlink signaling in step a0, where the G downlink signaling carries the first configuration information, and the G downlink signaling is for G terminals respectively.

As an embodiment, the base station sends a shared signaling in step a0, where the shared signaling carries the first configuration information, and the shared signaling is received by G terminals.

As an embodiment, the first configuration information is indicated by RRC dedicated signaling.

As one example, G is greater than 1.

As an embodiment, the G information bits are for the G terminals, respectively.

-step a1. sending second configuration information.

As an embodiment, the second configuration information is indicated by higher layer signaling.

As an embodiment, the second configuration information is indicated by RRC dedicated signaling.

As one embodiment, the receiver of the second configuration information includes a sender of the first wireless signal.

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

a first receiving module: for receiving the first signaling and the second signaling.

A first sending module: the method is used for determining a target time frequency resource block and sending a first wireless signal on the target time frequency resource block.

As an embodiment, the user equipment further includes:

a second receiving module: for receiving the third signaling.

As an embodiment, the above user equipment is characterized in that the first radio signal includes a positive integer number of modulation symbols, and the modulation symbols correspond to one or more bits. The target time-frequency resource block belongs to the first resource pool, and the modulation symbols are mapped to Q1 RUs through a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, and the modulation symbols are mapped to Q2 RUs through a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and one OFDM symbol duration in the time domain. The Q1 and the Q2 are each positive integers greater than 1.

As an embodiment, the above user equipment is characterized in that the first receiving module is further configured to: first configuration information and second configuration information are received.

Wherein the first configuration information is used to determine a first index. The first index is used to identify at least one of the second signaling, the third signaling. The first index is an integer. The second configuration information is used to determine a second index. The second index is used to { generate a first RS sequence, generate a first scrambling sequence, determine a position of the target information bit among the G information bits }, the first RS sequence being an RS sequence to which an RS of the first wireless signal corresponds, the first scrambling sequence being used to scramble the first wireless signal.

The application discloses a base station equipment for wireless communication, wherein, including the following module:

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

A third receiving module: the method is used for executing blind detection and receiving K wireless signals in a target time frequency resource block. One wireless signal of the K wireless signals is a first wireless signal. The K is a positive integer.

As an embodiment, the base station apparatus further includes:

a third sending module: for transmitting the third signaling.

As an embodiment, the base station apparatus is characterized in that the first radio signal includes a positive integer number of modulation symbols, and the modulation symbols correspond to one or more bits. The target time-frequency resource block belongs to the first resource pool, and the modulation symbols are mapped to Q1 RUs through a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, and the modulation symbols are mapped to Q2 RUs through a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and one OFDM symbol duration in the time domain. The Q1 and the Q2 are each positive integers greater than 1.

As an embodiment, the base station device is characterized in that the second sending module is further configured to send the first configuration information and the second configuration information.

Wherein the first configuration information is used to determine a first index. The first index is used to identify at least one of the second signaling, the third signaling. The first index is an integer. And G is a positive integer. The second configuration information is used to determine a second index. The second index is used to { generate a first RS sequence, generate a first scrambling sequence, determine a position of the target information bit among the G information bits }, the first RS sequence being an RS sequence to which an RS of the first wireless signal corresponds, the first scrambling sequence being used to scramble the first wireless signal.

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

the base station allocates two resource pools to the UE, and the UE can select an appropriate time-frequency resource from the two resource pools for transmitting a radio signal. The { maximum multiplexing UE number, occupied time frequency resource size } corresponding to the two resource pools can be independently set, and further balance is achieved between (delay, uplink transmission conflict and the like) performance and transmission efficiency.

The scheduling scheme based on the terminal group can save the air interface overhead occupied by the downlink signaling, and further improve the transmission 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 uplink transmission according to an embodiment of the present application;

FIG. 2 illustrates a flow diagram for transmitting first configuration information and second configuration information according to one embodiment of the present application;

fig. 3 shows a flow diagram for transmitting downlink signaling according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of a first resource pool and a second resource pool according to an embodiment of the present application;

FIG. 5 shows a schematic diagram of a time-frequency resource block 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 block diagram of a processing device in a UE according to an embodiment of the present 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 uplink transmission, as shown in fig. 1. In fig. 1, base station N1 is a serving cell maintaining base station for UE U2. The steps in block F1 and block F2, respectively, are optional.

For theBase station N1In step S10, the first configuration is sentSetting information and second configuration information; transmitting the first signaling and the second signaling in step S11; performing blind detection in step S12, receiving K wireless signals in the target time-frequency resource block, where one of the K wireless signals is a first wireless signal; the third signaling is sent in step S13.

For theUE U2Receiving the first configuration information and the second configuration information in step S20; receiving the first signaling and the second signaling in step S21; determining a target time frequency resource block in step S22, and sending a first wireless signal on the target time frequency resource block; the third signaling is received in step S23.

In embodiment 1, the first signaling indicates the first resource pool, and the second signaling indicates the second resource pool. The target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. The first configuration information is used to determine a first index. The first index is used to identify at least one of the second signaling, the third signaling. The first index is an integer. And G is a positive integer. The second configuration information is used to determine a second index. The second index is used to { generate a first RS sequence, generate a first scrambling sequence, determine a position of the target information bit among the G information bits }, the first RS sequence being an RS sequence to which an RS of the first wireless signal corresponds, the first scrambling sequence being used to scramble the first wireless signal. The K is a positive integer. The third signaling comprises G information bits, wherein K information bits of the G information bits are respectively used for determining whether the K wireless signals are correctly decoded, and other information bits of the G information bits indicate that the K wireless signals are not correctly decoded. The target information bit is 1 information bit of the K information bits, which is used to determine whether the first wireless signal is decoded correctly. And G is a positive integer. The first signaling is cell-common higher layer signaling and the second signaling is UE-specific or UE group-specific.

As sub-embodiment 1 of embodiment 1, the second signaling is physical layer signaling.

As sub-embodiment 2 of embodiment 1, the second signaling is higher layer signaling.

As sub-embodiment 3 of embodiment 1, the RS of the first radio signal is used to estimate channel parameters of a radio channel of the UE U2 to the base station N1.

As sub embodiment 4 of embodiment 1, the second index is a non-negative integer smaller than G, indexes of the G information bits from MSB (Most Significant Bit) to LSB (Least Significant Bit) are 0, 1, …, G-1 in this order, and an index of the target information Bit among the G information bits is equal to the second index.

As a sub-embodiment 5 of embodiment 1, the first configuration information includes the first index, and the second configuration information includes the second index.

As sub-embodiment 6 of embodiment 1, the first index is indicated by X1 information bits, the second index is indicated by X2 information bits, the X1 and the X2 are positive integers, respectively, and a sum of the X1 plus the X2 is equal to 16.

Example 2

Embodiment 2 illustrates a flowchart for transmitting the first configuration information and the second configuration information, as shown in fig. 2. In fig. 2, UE U2 and UE U3 are under the coverage of the same serving cell, and base station N1 is the maintaining base station of the serving cell.

For theBase station N1First higher layer signaling is transmitted in step S101, and second higher layer signaling is transmitted in step S102.

For theUE U2First higher layer signaling is received in step S201.

For theUE U3Second higher layer signaling is received in step S301.

In embodiment 2, the UE U2 and the UE U3 belong to a terminal group, the first higher layer signaling includes first configuration information and first parameters, and the second higher layer signaling includes first configuration information and second parameters. The first configuration information includes a first index. For UE U2, the first parameter is the second index in this application. For UE U3, the second parameter is the second index in this application.

Example 3

Embodiment 3 illustrates a flowchart for transmitting downlink signaling, as shown in fig. 3. In embodiment 3, the UE U2 and the UE U3 are under the coverage of the same serving cell, and the base station N1 is a maintaining base station of the serving cell.

In embodiment 3, the base station N1 sends downlink signaling in step S14, the UE U2 receives the downlink signaling in step S24, and the UE U3 receives the downlink signaling in step S34.

As sub-embodiment 1 of embodiment 3, the downlink signaling includes the first configuration information in this application.

As sub-embodiment 2 of embodiment 3, where the downlink signaling is the first signaling in this application, the UE U2 and the UE U3 are respectively configured with different first indexes (i.e., the UE U2 and the UE U3 respectively belong to different terminal groups).

As a sub-embodiment 3 of embodiment 3, where the downlink signaling is the second signaling in this application, the UE U2 and the UE U3 are configured with the same first index (i.e., the UE U2 and the UE U3 belong to the same terminal group).

Example 4

Example 4 illustrates a schematic diagram of a first resource pool and a second resource pool, as shown in fig. 4. In fig. 4, a small square grid filled with oblique lines identifies a time-frequency resource block in the first resource pool, and a small square grid filled with numbers identifies a time-frequency resource block in the second resource pool.

In embodiment 4, the time domain resources occupied by the first resource pool are continuous, and the time domain resources occupied by the second resource pool are discrete (i.e. discontinuous). The small squares filled with the same number identify a second pool of resources.

As sub-embodiment 1 of embodiment 4, one of the time-frequency resource blocks is composed of a plurality of RUs.

As a sub-embodiment 2 of embodiment 4, the target time-frequency resource block in this application is a time-frequency resource block in the first resource pool, or the target time-frequency resource block in this application is a time-frequency resource block in the second resource pool.

As sub-embodiment 3 of embodiment 4, the UE preferentially selects the time-frequency resource block in the second resource pool to transmit the uplink signal unless the buffer of the UE overflows before the upcoming first time-frequency resource block in the second resource pool. As a sub-embodiment, for a given UE, the second resource pool is composed of blocks of time-frequency resources corresponding to small squares filled with the number 2. In fig. 4, a time interval corresponding to a small square box filled with a thick line 4 exists in the buffer of the given UE, and an uplink signal to be transmitted exists in the buffer. If the Buffer of the given UE does not overflow before a time interval corresponding to an upcoming first time-frequency resource block (as identified by a bold frame and a small square lattice filled with 2 in fig. 4) in the second resource pool, the given UE selects to transmit a first wireless signal in the second resource pool, otherwise, the given UE selects to transmit the first wireless signal in the first resource pool.

Example 5

Embodiment 5 illustrates a schematic diagram of a time-frequency resource block, as shown in fig. 5. In fig. 5, a thin line small square identifies one RU, and a thick line small square identifies one time-frequency resource block.

In embodiment 5, the RU occupied by one time-frequency resource block in the time domain is continuous, and the RU occupied by one time-frequency resource block in the frequency domain is continuous.

As sub-embodiment 1 of embodiment 5, the first wireless signal includes a positive integer number of modulation symbols, the modulation symbols corresponding to one or more bits. The modulation symbols are mapped to Q RUs in a time-frequency resource block through a spreading sequence, and the Q RUs belong to the same subcarrier.

As sub-embodiment 2 of embodiment 5, the Q1 RUs in this application occupy multiple subcarriers in one time-frequency resource block, and the Q2 RUs in this application belong to the same subcarrier in one time-frequency resource block. The Q1 is greater than the Q2.

As sub-embodiment 3 of embodiment 5, the RU is RE (Resource Element).

Example 6

Embodiment 6 illustrates a block diagram of a processing device in a UE, as shown in fig. 6. In fig. 6, the processing apparatus 100 mainly comprises a first processing module 101, a first sending module 102 and a second receiving module 103, wherein the second receiving module 103 is an optional module.

The first processing module 101 is configured to receive a first signaling and a second signaling. The first sending module 102 is configured to determine a target time-frequency resource block, and send a first wireless signal on the target time-frequency resource block. The second receiving module 103 is configured to receive the third signaling.

In embodiment 6, first signaling is used to determine the first resource pool, and second signaling is used to determine the second resource pool. The target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. The third signaling includes G information bits, a target information bit is 1 of the G information bits, and the target information bit indicates whether the first wireless signal is decoded correctly. The first signaling is higher layer signaling common to the cells.

As sub-embodiment 1 of embodiment 6, the second signaling is UE-specific or the second signaling is UE group-specific.

As sub-embodiment 2 of embodiment 6, the second signaling is physical layer signaling, the second signaling including scheduling information of the first wireless signal, the scheduling information including at least one of { MCS (Modulation and coding Status), RV (Redundancy Version), NDI (New Data Indicator) }.

Example 7

Embodiment 7 illustrates a block diagram of a processing apparatus in a base station, as shown in fig. 7. In fig. 7, the processing apparatus 200 mainly comprises a second sending module 201, a third receiving module 202 and a third sending module 203, wherein the third sending module 203 is an optional module.

The second sending module 201 is configured to send the first signaling and the second signaling. The third receiving module 202 is configured to perform blind detection, and receive K wireless signals in a target time-frequency resource block. The third sending module 203 is configured to send a third signaling.

In embodiment 7, first signaling is used to determine the first resource pool and second signaling is used to determine the second resource pool. The target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool. One wireless signal of the K wireless signals is a first wireless signal. The K is a positive integer. The third signaling comprises G information bits, wherein K information bits of the G information bits are respectively used for determining whether the K wireless signals are correctly decoded, and other information bits of the G information bits indicate that the K wireless signals are not correctly decoded. The target information bit is 1 information bit of the K information bits, which is used to determine whether the first wireless signal is decoded correctly. And G is a positive integer. The first signaling is higher layer signaling common to the cells. The second signaling is UE-specific or the second signaling is UE group-specific.

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, an MTC (machine type Communication) terminal, an eMTC (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 wireless communication, comprising the steps of:

-step a. receiving a first signaling and a second signaling;

step B, determining a target time frequency resource block, and transmitting a first wireless signal on the target time frequency resource block;

wherein the first signaling is used to determine a first resource pool and the second signaling is used to determine a second resource pool; the target time frequency resource block belongs to the first resource pool, or the target time frequency resource block belongs to the second resource pool; the first signaling is cell-specific and the second signaling is UE-specific; the first wireless signal comprises a positive integer number of modulation symbols, the modulation symbols corresponding to one or more bits; the target time-frequency resource block belongs to the first resource pool, and the modulation symbols are mapped to Q1 RUs through a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, and the modulation symbols are mapped to Q2 RUs through a second spreading sequence; the RU occupies a subcarrier bandwidth in a frequency domain and occupies the duration of an OFDM symbol in a time domain; the Q1 and the Q2 are each positive integers greater than 1; the Q1 is greater than the Q2.

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

-step c. receiving a third signaling;

3. The method of claim 2, wherein step a further comprises the steps of:

-step A0. receiving first configuration information;

wherein the first configuration information is used to determine a first index; the first index is used to identify at least one of { the second signaling, the third signaling }; the first index is an integer.

4. The method according to claim 2 or 3, wherein the step A further comprises the steps of:

-a step a1. receiving second configuration information;

wherein the second configuration information is used to determine a second index; the second index is used to { generate a first RS sequence, generate a first scrambling sequence, determine a position of the target information bit among the G information bits }, the first RS sequence being an RS sequence to which an RS of the first wireless signal corresponds, the first scrambling sequence being used to scramble the first wireless signal.

5. A method in a base station for wireless communication, comprising the steps of:

-step a. sending a first signaling and a second signaling;

-step b. performing blind detection, receiving K radio signals in a target time-frequency resource block; one wireless signal of the K wireless signals is a first wireless signal; the K is a positive integer;

6. The method of claim 5, further comprising the steps of:

-step c. sending a third signaling;

wherein the third signaling comprises G information bits, K information bits of the G information bits are respectively used for determining whether the K wireless signals are correctly decoded, and other information bits of the G information bits indicate that the K wireless signals are not correctly decoded; a target information bit is 1 information bit of the K information bits, the target information bit being used to determine whether the first wireless signal is decoded correctly; and G is a positive integer.

7. The method of claim 6, wherein step A further comprises the steps of:

step A0. sending the first configuration information;

wherein the first configuration information is used to determine a first index; the first index is used to identify at least one of { the second signaling, the third signaling }; the first index is an integer; and G is a positive integer.

8. The method according to claim 6 or 7, wherein the step A further comprises the steps of:

-a step a1. sending second configuration information;

9. A user equipment for wireless communication, comprising:

a first receiving module: for receiving the first signaling and the second signaling;

a first sending module: the system comprises a first wireless signal sending module, a second wireless signal sending module and a first wireless signal sending module, wherein the first wireless signal sending module is used for sending a first wireless signal to a target time frequency resource block;

10. The user equipment of claim 9, further comprising:

a second receiving module: for receiving third signaling;

11. The UE of claim 10, wherein the first receiving module is further configured to receive first configuration information; wherein the first configuration information is used to determine a first index; the first index is used to identify at least one of { the second signaling, the third signaling }; the first index is an integer.

12. The ue according to claim 10 or 11, wherein the first receiving module is further configured to receive second configuration information;

13. A base station apparatus for wireless communication, comprising:

a second sending module: the first signaling and the second signaling are sent;

a third receiving module: the system comprises a receiver, a processor and a controller, wherein the receiver is used for executing blind detection and receiving K wireless signals in a target time frequency resource block; one wireless signal of the K wireless signals is a first wireless signal; the K is a positive integer;

14. The base station apparatus according to claim 13, further comprising:

a third sending module: for transmitting a third signaling;

15. The base station device of claim 14, wherein the second sending module is further configured to send first configuration information;

16. The base station device according to claim 14 or 15, wherein the second sending module further comprises sending second configuration information;