WO2017190586A1

WO2017190586A1 - Method and device for radio communication

Info

Publication number: WO2017190586A1
Application number: PCT/CN2017/080765
Authority: WO
Inventors: 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2016-05-01
Filing date: 2017-04-17
Publication date: 2017-11-09
Also published as: CN110932832B; CN110932832A; CN107343297B; CN107343297A

Abstract

Disclosed are a method and device for radio communication. As one embodiment, a UE first receives a first signaling and a second signaling. Then, a target time-frequency resource block is determined; a first radio signal is transmitted on the target time-frequency resource block. 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 used for determining the first resource pool; the second signaling is used for determining the second resource pool. The first signaling of the {first signaling and the second signaling} is cell-specific. The present invention allows the UE to select from two resource pools a suitable time-frequency resource for use in transmitting the radio signal. {The maximum number of multiplexing UE and the size of the time-frequency resource occupied} corresponding to the two resource pools can be set independently, thus achieving balance between performance and transmission efficiency.

Description

Method and device in wireless communication

Technical field

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

Background technique

In a conventional digital modulation-based wireless communication system, such as a 3GPP (3rd Generation Partner Project) cellular system, uplink wireless signal transmission is based on base station scheduling. For the next generation of wireless communication systems, IoT (Internet of Things) communication may become an important application scenario.

The characteristics of IoT communication include: the number of terminal devices is very large, the standby time supported by the terminal device is long (low power consumption), and the cost of the terminal device is low. Traditional scheduling-based uplink transmission is no longer applicable to IoT, for the following reasons:

- The signaling required for downlink scheduling can severely reduce transmission efficiency. In particular, it is considered that the number of information bits included in the uplink transmission of a typical primary IoT is usually small.

- Increase the power consumption of the terminal device and reduce the standby time. In the existing system, the terminal device first transmits signaling such as an SR (Scheduling Request) before transmitting the uplink transmission.

-. Increased uplink transmission delay. In some special scenarios, IoT communication requires a lower transmission delay, and existing scheduling-based uplink transmissions cannot meet this requirement.

In response to the above problem, CB (Contention Based) uplink transmission is proposed, that is, the UE does not need the scheduling of the base station to transmit uplink information. If no collision occurs (between two or more UEs), the base station can correctly decode the uplink information.

Summary of the invention

The inventors found through research that the base station needs to reserve corresponding time-frequency resources for CB uplink transmission. However, since the base station is not sure of the size of the time-frequency resource required for the real-transmitted uplink information, it is impossible to reserve an appropriate number of time-frequency resources.

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

In response to the above problems, the present invention provides a solution. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other arbitrarily. For example, features in embodiments and embodiments in the UE of the present application may be applied to a base station, and vice versa.

The invention discloses a method in a UE for wireless communication, which comprises the following steps:

Step A. Receive the first signaling and the second signaling.

Step B. Determine the target time-frequency resource block and transmit the first wireless signal on the target time-frequency resource block.

The first signaling is used to determine the first resource pool, and the 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 in the {first signaling, the second signaling} is 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 the CB uplink transmission, an intuitive solution is that the base station reserves a resource pool for the terminal, and the terminal selects an appropriate time-frequency resource in the reserved time-frequency pool for transmitting the wireless signal. In the above embodiment, the UE can select an appropriate time-frequency resource from two resource pools (rather than one resource pool) for transmitting a wireless signal.

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

In one embodiment, the resource pool includes a plurality of sub-bands in the frequency domain, and any two 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), and RS (Reference Signal).

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

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

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

As an embodiment, the cell-specific means that all terminals in the cell with corresponding functions may receive.

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

As an embodiment, the first signaling is cell-specific, and the transmission channel occupied by the first signaling is a BCH (Broadcast Channel).

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

As an embodiment, the first signaling is high 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.

As an embodiment, the second signaling is terminal group specific. The terminal group for the second signaling includes one or more terminals, and the terminal group for the second signaling includes the UE.

In the above two embodiments, the first resource pool may be occupied by all terminals in the cell with corresponding functions, and the second resource pool may only be occupied by a specific one or more terminals. That is, the uplink transmission in the first resource pool is highly likely to collide, and the uplink transmission in the first resource pool is less likely to collide. However, the real-time performance of the first resource pool may be higher, or the occupied resources (compared to the resource pool reserved for all terminal groups) are less. Therefore, the combination of the first resource pool and the second resource pool can strike a balance between performance and efficiency.

In an embodiment, in the step B, the UE is based on a {Buffer state, an upcoming first time-frequency resource in the first resource pool, and an upcoming first time in the second resource pool. At least one of the frequency resources} determines the target time-frequency resource block. As a sub-embodiment of this embodiment, if the Buffer state satisfies the trigger condition of the uplink transmission, The target time-frequency resource block is the first time-frequency resource that is about to arrive in the {first resource pool, the second resource pool}.

As an embodiment, the 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), and the RU occupies one subcarrier bandwidth in the frequency domain and occupies a duration of one multicarrier symbol in the time domain. As an embodiment, the multicarrier symbol is an OFDM symbol. As an embodiment, the multi-carrier symbol is an SC-FDMA symbol. As an embodiment, the multi-carrier symbol is an FBMC (Filter Bank Multi Carrier) symbol. As an embodiment, the subcarrier bandwidth is one of {15 kHz (kilohertz), 17.5 kHz, 17.06 kHz, 7.5 kHz, 2.5 kHz}.

In one 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 invention, the method further includes the following steps:

- Step C. Receive third signaling.

The third signaling includes G information bits, the target information bits are one of the G information bits, and the target information bits are used to determine whether the first wireless signal is correctly translated. code.

As an embodiment, the G information bits are respectively directed to G terminals, 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 caused by the base station missing the radio signal.

Specifically, according to an aspect of the present invention, the first wireless signal includes a positive integer number of modulation symbols, and the modulation symbol corresponds to one or more bits. The target time-frequency resource block belongs to the first resource pool, the modulation symbol is mapped to Q1 RUs by using a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, the modulation The symbols are mapped to Q2 RUs by a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and occupies the duration of one OFDM symbol in the time domain. The Q1 and the Q2 are positive integers greater than 1, respectively.

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 spread sequence; if the target time-frequency resource blocks belong to the second resource pool, the modulation symbols are mapped to Q2 RUs by a second spreading sequence.

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

In the foregoing embodiment, the length of the extended sequence used by the UE may change according to the location of the target time-frequency resource block 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 embodiment, the subcarrier bandwidth is one of {15 kHz (kilohertz), 17.5 kHz, 17.06 kHz, 7.5 kHz, 2.5 kHz}.

As an embodiment, 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 invention, the step A further includes the following steps:

- Step A0. Receive the first configuration information.

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, that is, received by multiple terminals, and the UE is one of the terminal groups.

In the foregoing embodiment, the second signaling or the third signaling is also specific to the terminal group, thereby saving corresponding air interface overhead and improving transmission efficiency.

As an 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.

As an 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, the CRC (Cyclic Redundancy Check) corresponding to the second signaling is related to the first index.

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

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

As an embodiment, the scrambling code sequence used by the CRC corresponding to the third signaling is related to the first index.

- Step A1. Receive second configuration information.

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 code sequence, and determine at least one of a location of the target information bits in the G information bits}, the first RS The sequence is an RS sequence corresponding to an RS of the first wireless signal, and the first scrambling code sequence is used to scramble the first wireless signal.

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

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

As an embodiment, the second index is used to generate the second spreading sequence.

As an embodiment, the first index and the second index are used to generate the second extended sequence.

As an embodiment, the second configuration information includes the second index.

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

Step A. Send the first signaling and the second signaling.

- Step B. Perform blind detection to receive K wireless signals in the target time-frequency resource block. One of the K wireless signals is a first wireless signal. The K is a positive integer.

Wherein the first signaling is used to determine the first resource pool, and the second signaling is used to determine Said 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 in {the first signaling, the second signaling} is 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.

In an embodiment, in the step B, the base station performs the blind detection on the G feature sequences in the target time-frequency resource block, and the base station determines, by using the blind detection, the G feature sequences. The K feature sequences are transmitted, and the K feature sequences are in one-to-one correspondence with the K wireless signals. As a sub-embodiment of this embodiment, the feature sequence is an RS sequence of RSs of respective wireless signals. As an embodiment, the blind detection is a coherent detection for a sequence of features.

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

- Step C. Send the third signaling.

The third signaling includes G information bits, and K information bits of the G information bits are respectively used to determine whether the K wireless signals are correctly decoded, where the G information bits are The other information bits indicate that the information was not decoded correctly. The target information bit is one of the K information bits, and the target information bit is used to determine whether the first wireless signal is correctly decoded. The G is a positive integer.

As an embodiment, the G is greater than one.

- Step A0. Send the first configuration information.

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 G is a positive integer.

As an embodiment, the recipient 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 signalings in the step A0, where the G downlink signalings respectively carry the first configuration information, and the G downlink signalings are respectively directed to G terminals.

As an embodiment, the base station sends a shared signaling in the step A0, 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 an embodiment, the G is greater than one.

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

- Step A1. Send the 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 an embodiment, the recipient of the second configuration information includes a sender of the first wireless signal.

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

The first receiving module is configured to receive the first signaling and the second signaling.

The first sending module is configured to determine a target time-frequency resource block, and send the first wireless signal on the target time-frequency resource block.

The first signaling is used to determine the first resource pool, and the 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 in {the first signaling, the second signaling} is cell-specific.

As an embodiment, the foregoing user equipment further includes:

The second receiving module is configured to receive the third signaling.

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

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

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 code sequence, and determine at least one of a location of the target information bits in the G information bits}, the first RS The sequence is an RS sequence corresponding to an RS of the first wireless signal, and the first scrambling code sequence is used to scramble the first wireless signal.

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

The second sending module is configured to send the first signaling and the second signaling.

The third receiving module is configured to perform blind detection, and receive K wireless signals in the target time-frequency resource block. One of the K wireless signals is a first wireless signal. The K is a positive integer.

As an embodiment, the foregoing base station device further includes:

The third sending module is configured to send the third signaling.

As an embodiment, the foregoing base station device is characterized in that the first wireless signal comprises 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, the modulation symbol is mapped to Q1 RUs by using a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, the modulation The symbols are mapped to Q2 RUs by a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and occupies the duration of one OFDM symbol in the time domain. The Q1 and the Q2 are positive integers greater than 1, respectively.

As an embodiment, the foregoing 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.

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 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 code sequence, and determine at least one of a location of the target information bits in the G information bits}, the first RS The sequence is an RS sequence corresponding to an RS of the first wireless signal, and the first scrambling code sequence is used to scramble the first wireless signal.

Compared with the prior art, the present invention has the following technical advantages:

The base station allocates two resource pools for the UE, and the UE can select an appropriate time-frequency resource from the two resource pools for transmitting the wireless signal. The {maximum number of multiplexed UEs, the occupied time-frequency resource size} corresponding to the two resource pools can be independently set, thereby balancing the performance (transmission, uplink transmission collision, etc.) performance and transmission efficiency.

The terminal group-based scheduling scheme 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 invention will become more apparent from the Detailed Description of Description

1 shows a flow chart of an uplink transmission in accordance with one embodiment of the present invention;

2 shows a flow chart for transmitting first configuration information and second configuration information according to an embodiment of the present invention;

FIG. 3 shows a flow chart of transmitting downlink signaling according to an embodiment of the present invention; FIG.

4 shows a schematic diagram of a first resource pool and a second resource pool, in accordance with one embodiment of the present invention;

FIG. 5 shows a schematic diagram of a time-frequency resource block according to an embodiment of the present invention; FIG.

6 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention;

FIG. 7 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention;

detailed description

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the features of the embodiments and the embodiments of the present application may be combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of uplink transmission, as shown in FIG. In Fig. 1, a base station N1 is a maintenance base station of a serving cell of UE U2. The steps in block F1 and block F2 are optional, respectively.

For the base station N1 , transmitting the first configuration information and the second configuration information in step S10; transmitting the first signaling and the second signaling in step S11; performing blind detection in the target time-frequency resource block in step S12 The K wireless signals are received, and one of the K wireless signals is a first wireless signal; the third signaling is transmitted in step S13.

For the UE U2 , receiving the first configuration information and the second configuration information in step S20; receiving the first signaling and the second signaling in step S21; determining the target time-frequency resource block in the target time-frequency resource in step S22 The first wireless signal is transmitted on the 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. The 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 code sequence, and determine at least one of a location of the target information bits in the G information bits}, the first RS The sequence is an RS sequence corresponding to an RS of the first wireless signal, and the first scrambling code sequence is used to scramble the first wireless signal. The K is a positive integer. The third signaling includes G information bits, and K information bits of the G information bits are used to determine whether the K wireless signals are correctly decoded, and other of the G information bits. The information bits indicate that they were not decoded correctly. The target information bit is one of the K information bits, and the target information bit is used to determine whether the first wireless signal is correctly decoded. The G is a positive integer. The first signaling is a high layer signaling common to the cell, and the second signaling is UE specific or UE group specific.

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

As a sub-embodiment 2 of Embodiment 1, the second signaling is high layer signaling.

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

As a sub-embodiment 4 of Embodiment 1, the second index is a non-negative integer smaller than G, and the G information bits are from an MSB (Most Significant Bit) to an LSB (Least Significant Bit). The index of the ) is 0, 1, ..., G-1, and the index of the target information bits in 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, The second configuration information includes the second index.

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

Example 2

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

For the base station N1 , the first higher layer signaling is transmitted in step S101, and the second higher layer signaling is transmitted in step S102.

For UE U2 , the first higher layer signaling is received in step S201.

For UE U3 , the second higher layer signaling is received in step S301.

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

Example 3

Embodiment 3 illustrates a flow chart for transmitting downlink signaling, as shown in FIG. In Embodiment 3, UE U2 and UE U3 are under the coverage of the same serving cell, and base station N1 is the maintenance base station of the serving cell.

In Embodiment 3, the base station N1 transmits 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 a sub-embodiment 1 of Embodiment 3, the downlink signaling includes the first configuration information in the present invention.

As the second embodiment of the third embodiment, the downlink signaling is the first signaling in the present invention, and the UE U2 and the UE U3 are respectively configured with different first indexes (that is, the UE U2 and the UE U3 are different respectively). Terminal group).

As the third embodiment of the third embodiment, the downlink signaling is the second signaling in the present invention, and the UE U2 and the UE U3 are configured with the same first index (that is, the UE U2 and the UE U3 belong to the same terminal). group).

Example 4

Embodiment 4 illustrates a schematic diagram of a first resource pool and a second resource pool, as shown in FIG. In FIG. 4, a diagonally filled small square identifies one time-frequency resource block in the first resource pool, and a number-filled small square identifies one time-frequency resource block in the second resource pool.

In the fourth embodiment, the time domain resources occupied by the first resource pool are continuous, and the second resource pool is that the occupied time domain resources are discrete (ie, discontinuous). A small square filled with the same number identifies a second resource pool.

As a 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 the present invention is one time-frequency resource block in the first resource pool, or the target time-frequency resource block in the present invention is A time-frequency resource block in the second resource pool.

As a sub-embodiment 3 of the embodiment 4, the UE preferentially selects the time-frequency resource block in the second resource pool to send an uplink signal, unless the buffer of the UE is in the upcoming first one in the second resource pool. An overflow occurred before the time-frequency resource block. As a sub-embodiment, for a given UE, the second resource pool is composed of time-frequency resource blocks corresponding to the small squares filled with the number 2. In FIG. 4, the time interval corresponding to the thick square box of 4 is filled, and the upstream signal to be transmitted exists in the buffer of the given UE. If the Buffer of the given UE is not within the time interval corresponding to the upcoming first time-frequency resource block in the second resource pool (as indicated by the small box of the thick line box filled with 2 in FIG. 4) Will overflow, the given UE chooses to send the first wireless signal in the second resource pool, otherwise the given UE chooses to send 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. In Fig. 5, a thin line small square identifies one RU, and a thick line small square identifies a time-frequency resource block.

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

As a sub-embodiment 1 of embodiment 5, the first wireless signal comprises 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 one time-frequency resource block by a spreading sequence, and the Q RUs belong to the same sub-carrier.

In the second embodiment of the present embodiment, the Q1 RUs in the present invention occupy a plurality of subcarriers in a time-frequency resource block, and the Q2 RUs in the present invention belong to a time-frequency resource block. The same subcarrier in . The Q1 is greater than the Q2.

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

Example 6

Embodiment 6 exemplifies a structural block diagram of a processing device in a UE, as shown in FIG. In FIG. 6, the processing device 100 is mainly composed of 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 the first signaling and the second signaling. The first sending module 102 is configured to determine a target time-frequency resource block, and send the 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, the first signaling is used to determine the first resource pool, and the 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, the target information bits are one of the G information bits, and the target information bits indicate whether the first wireless signal is correctly decoded. The first signaling is high layer signaling common to the cell.

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

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

Example 7

Embodiment 7 exemplifies a structural block diagram of a processing device in a base station, as shown in FIG. In FIG. 7, the processing device 200 is mainly composed of 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 the target time-frequency resource block. The third sending module 203 is configured to send the third signaling.

In Embodiment 7, the first signaling is used to determine the first resource pool, and the 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 of the K wireless signals is a first wireless signal. The K is a positive integer. The third signaling includes G information bits, and K information bits of the G information bits are used to determine whether the K wireless signals are correctly decoded, and other of the G information bits. The information bits indicate that they were not decoded correctly. The target information bit is one of the K information bits, and the target information bit is used to determine whether the first wireless signal is correctly decoded. The G is a positive integer. The first signaling is high layer signaling common to the cell. The second signaling is UE specific or the second signaling is UE group specific.

One of ordinary skill in the art can appreciate that all or part of the above steps can be completed by a program to instruct related hardware, and the program can 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 also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module. The application is not limited to any specific combination of software and hardware. The UE and the terminal in the present invention include but are not limited to mobile phones, tablet computers, notebooks, vehicle communication devices, wireless sensors, network cards, Internet of things terminals, RFID terminals, NB-IOT terminals, and MTC (Machine Type Communication). Terminals, eMTC (enhanced MTC) terminals, data cards, network cards, in-vehicle communication devices, low-cost mobile phones, low-cost tablets and other wireless communication devices. The base station in the present invention includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method in a UE for wireless communication, comprising the steps of:

Step A. Receive the first signaling and the second signaling.

Step B. Determine the target time-frequency resource block and transmit the first wireless signal on the target time-frequency resource block.

The first signaling is used to determine the first resource pool, and the 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 in {the first signaling, the second signaling} is cell-specific.
The method of claim 1 further comprising the steps of:

- Step C. Receive third signaling.

The third signaling includes G information bits, the target information bits are one of the G information bits, and the target information bits are used to determine whether the first wireless signal is correctly translated. code.
The method of claim 1, wherein 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, the modulation symbol is mapped to Q1 RUs by using a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, the modulation The symbols are mapped to Q2 RUs by a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and occupies the duration of one OFDM symbol in the time domain. The Q1 and the Q2 are positive integers greater than 1, respectively.
The method according to any one of claims 1-3, wherein the step A further comprises the following steps:

- Step A0. Receive the first configuration information.

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 method according to any one of claims 1-4, wherein the step A further comprises the following steps:

- Step A1. Receive second configuration information.

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 code sequence, and determine the target information bit in the At least one of the positions of the G information bits, the first RS sequence being an RS sequence corresponding to the RS of the first wireless signal, the first scrambling code sequence being used for scrambling the first A wireless signal.
A method in a base station for wireless communication, comprising the steps of:

Step A. Send the first signaling and the second signaling.

- Step B. Perform blind detection to receive K wireless signals in the target time-frequency resource block. One of the K wireless signals is a first wireless signal. The K is a positive integer.

The first signaling is used to determine the first resource pool, and the 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 in {the first signaling, the second signaling} is cell-specific.
The method of claim 6 further comprising the steps of:

- Step C. Send the third signaling.

The third signaling includes G information bits, and K information bits of the G information bits are respectively used to determine whether the K wireless signals are correctly decoded, where the G information bits are The other information bits indicate that the information was not decoded correctly. The target information bit is one of the K information bits, and the target information bit is used to determine whether the first wireless signal is correctly decoded. The G is a positive integer.
The method of claim 6 or 7, wherein said first wireless signal comprises a positive integer number of modulation symbols, said modulation symbols corresponding to one or more bits. The target time-frequency resource block belongs to the first resource pool, the modulation symbol is mapped to Q1 RUs by using a first spreading sequence; or the target time-frequency resource block belongs to the second resource pool, the modulation The symbols are mapped to Q2 RUs by a second spreading sequence. The RU occupies one subcarrier bandwidth in the frequency domain and occupies the duration of one OFDM symbol in the time domain. The Q1 and the Q2 are positive integers greater than 1, respectively.
The method according to any one of claims 6-8, wherein the step A further comprises the following steps:

- Step A0. Send the first configuration information.

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 G is a positive integer.
The method according to any of claims 6-9, wherein the step A further comprises the following steps:

- Step A1. Send the second configuration information.

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 code sequence, and determine at least one of a location of the target information bits in the G information bits}, the first RS The sequence is an RS sequence corresponding to an RS of the first wireless signal, and the first scrambling code sequence is used to scramble the first wireless signal.
A user equipment for wireless communication, comprising the following modules:

The first receiving module is configured to receive the first signaling and the second signaling.

The first sending module is configured to determine a target time-frequency resource block, and send the first wireless signal on the target time-frequency resource block.

The first signaling is used to determine the first resource pool, and the 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 in {the first signaling, the second signaling} is cell-specific.
The user equipment according to claim 11, further comprising:

The second receiving module is configured to receive the third signaling.

The third signaling includes G information bits, the target information bits are one of the G information bits, and the target information bits are used to determine whether the first wireless signal is correctly translated. code.
A base station device for wireless communication, comprising the following modules:

The second sending module is configured to send the first signaling and the second signaling.

The third receiving module is configured to perform blind detection, and receive K wireless signals in the target time-frequency resource block. One of the K wireless signals is a first wireless signal. The K is a positive integer.

The first signaling is used to determine the first resource pool, and the 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 in {the first signaling, the second signaling} is cell-specific.
The base station device according to claim 13, further comprising:

The third sending module is configured to send the third signaling.

The third signaling includes G information bits, and K information bits of the G information bits are respectively used to determine whether the K wireless signals are correctly decoded, where the G information bits are The other information bits indicate that the information was not decoded correctly. The target information bit is one of the K information bits, and the target information bit is used to determine whether the first wireless signal is correctly decoded. The G is a positive integer.