CN108605026B

CN108605026B - Signal transmission method and device and terminal equipment

Info

Publication number: CN108605026B
Application number: CN201680080592.XA
Authority: CN
Inventors: 董辰; 王键; 张莉莉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-02-24
Filing date: 2016-02-24
Publication date: 2020-07-24
Anticipated expiration: 2036-02-24
Also published as: CN108605026A; WO2017143529A1

Abstract

The embodiment of the invention discloses a signal transmission method, a signal transmission device and terminal equipment, wherein the method comprises the following steps: determining a sub-frequency band contained in a virtual resource pool, and a sub-frequency band and a time slot contained in a physical resource pool, wherein the physical resource pool comprises at least two sub-frequency bands and at least two time slots, and the sub-frequency band contained in the physical resource pool is greater than or equal to the sub-frequency band contained in the virtual resource pool; acquiring a time domain correlation weight and a frequency domain correlation weight; determining a mapping scheme from VRB to PRB according to the time domain correlation weight, the frequency domain correlation weight and the number of sub-bands contained in the virtual resource pool; mapping the VRB in the virtual resource pool to the PRB of the physical resource pool according to the mapping scheme from the VRB to the PRB; and transmitting the signal by using the mapped PRB. By adopting the embodiment of the invention, the effectiveness of signal transmission can be improved.

Description

Signal transmission method and device and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a signal transmission method, an apparatus, and a terminal device.

Background

In TS 36.211, V12.6.0 of 3GPP protocol Release 12, a specific scheme for mapping from a VRB (virtual resource block, VRB) to a PRB (physical resource block, PRB) is proposed. The sending end needs to measure the channel to obtain the channel information, and determines the mapping scheme from the VRB to the PRB according to the obtained channel information. The traditional channel measurement method needs at least 5ms for measuring the channel, for downlink transmission, when the moving speed of the mobile station is high, the measured channel information is inconsistent with the change of the current channel, namely the measured channel information is outdated channel information, a mapping scheme from VRB to PRB is determined according to the outdated channel information, the mapped PRB is used for sending signals, and the effectiveness of signal transmission is reduced.

Disclosure of Invention

The application provides a signal transmission method, a signal transmission device and terminal equipment, which can improve the effectiveness of signal transmission.

A first aspect provides a signal transmission method, including:

determining a sub-frequency band contained in a virtual resource pool, and a sub-frequency band and a time slot contained in a physical resource pool, wherein the physical resource pool comprises at least two sub-frequency bands and at least two time slots, and the sub-frequency band contained in the physical resource pool is greater than or equal to the sub-frequency band contained in the virtual resource pool;

acquiring a time domain correlation weight and a frequency domain correlation weight;

determining a mapping scheme from VRB to PRB according to the time domain correlation weight, the frequency domain correlation weight and the number of sub-bands contained in the virtual resource pool;

mapping the VRB in the virtual resource pool to the PRB of the physical resource pool according to the mapping scheme from the VRB to the PRB;

and transmitting the signal by using the mapped PRB.

In a conventional signal transmission method, a terminal device measures channel state information and determines a mapping scheme from a VRB to a PRB according to the channel state information. At present, the measurement of the channel state information needs at least 5ms, when the moving speed of the mobile station is high, the channel change is high, the measured channel state information is not the current channel state information, the accuracy of the mapping scheme from the VRB to the PRB determined according to the measured channel state information is low, and signals cannot be effectively transmitted. In the technical scheme, the terminal equipment determines a mapping scheme from the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight and the number of the sub-bands contained in the virtual resource pool, does not need to measure the channel state information, saves the measurement overhead of the channel state information and improves the effectiveness of signal transmission.

In a first possible implementation manner, determining a mapping scheme from a VRB to a PRB according to a time-domain correlation weight, a frequency-domain correlation weight, and a number of subbands included in a virtual resource pool includes:

and when the time domain correlation weight is 1 and the frequency domain correlation weight is 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number.

When the number of the sub-bands contained in the virtual resource pool is even, determining that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and the time slot and the PRB corresponding to the VRB located in the previous time slot of the sub-band and the time slot is equal to 1/2 × n. And determining that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and the time slot and the PRB corresponding to the VRB located in the next time slot of the sub-band and the time slot is equal to 1/2 n-1. n is the number of sub-bands included in the virtual resource pool.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, after determining whether the number of subbands included in the virtual resource pool is an even number, the method further includes:

when the number of the sub-bands contained in the virtual resource pool is odd, determining that the frequency hopping distance between the PRB corresponding to the VRB of the sub-band and time slot and the PRB corresponding to the VRB of the previous time slot of the sub-band and time slot is equal to

And determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the next time slot of the sub-band and the time slot is equal to

With reference to the possible implementation manner of the first aspect, in a third possible implementation manner, determining a mapping scheme from a VRB to a PRB according to a time-domain correlation weight, a frequency-domain correlation weight, and a number of subbands included in a virtual resource pool includes:

and when the time domain correlation weight is 0 and the frequency domain correlation weight is 1, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number.

When the number of subbands included in the virtual resource pool is even, it is determined that the frequency hopping distance between the PRB corresponding to the VRB located in the subband and in the slot and the PRB corresponding to the VRB located in the subband and spaced by 1/2 × n slots is 1. And determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the sub-band and spaced by 1/2 x n-1 time slots is 1.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, after determining whether the number of sub-bands included in the virtual resource pool is an even number, the method further includes:

when the number of the sub-bands contained in the virtual resource pool is odd, determining the PRB corresponding to the VRB of the time slot and the PRB which is positioned in the sub-band and is spaced from the PRB

The frequency hopping distance between PRBs corresponding to the VRBs of each time slot is 1. And determining PRBs corresponding to the VRBs located in the sub-band and having the interval between the PRBs and the PRBs located in the sub-band and having the interval between the PRBs

The frequency hopping distance between PRBs corresponding to the VRBs of each time slot is 1.

With reference to any one of the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner, a cycle period of a VRB corresponding to a PRB in the mapped physical resource pool is the number of subbands included in the virtual resource pool.

With reference to the possible implementation manners of the first aspect, in a sixth possible implementation manner, determining a mapping scheme from a VRB to a PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool includes:

and when the time domain correlation weight and the frequency domain correlation weight are not both 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number.

When the number of the sub-bands included in the virtual resource pool is even, determining that the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2 × n. And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode. And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance. And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired. And m is the minimum weight of the time domain correlation weight and the frequency domain correlation weight.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, after determining whether the number of subbands included in the virtual resource pool is an even number, the method further includes:

when the number of the sub-bands contained in the virtual resource pool is odd, determining that the time-frequency weighting distance between PRBs corresponding to VRBs in different time slots and located in the same sub-band is equal to

And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode. And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance. And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired.

With reference to the possible implementation manners of the first aspect, in an eighth possible implementation manner, the sending times of the signals are the same or different by one time.

A second aspect provides a computer storage medium, wherein the computer storage medium may store a program that, when executed, comprises some or all of the steps of the first aspect.

A third aspect provides a signal transmission apparatus, which may include a subband determining unit, a weight obtaining unit, a mapping scheme determining unit, a mapping unit, and a signal transmitting unit, and may be configured to implement some or all of the steps in conjunction with the first aspect.

A fourth aspect provides a terminal device, comprising a processor, an output device and a memory, wherein the memory stores a set of program codes, and the processor and the output device call the program codes stored in the memory to perform the following operations:

the processor determines a sub-band included in the virtual resource pool, and a sub-band and a time slot included in the physical resource pool, wherein the physical resource pool includes at least two sub-bands and at least two time slots, and the sub-band included in the physical resource pool is greater than or equal to the sub-band included in the virtual resource pool. The processor obtains time domain correlation weights and frequency domain correlation weights. The processor determines a mapping scheme from the VRB to the PRB according to the time domain correlation weight, the frequency domain correlation weight and the number of the sub-bands contained in the virtual resource pool. And the processor maps the VRB in the virtual resource pool to the PRB of the physical resource pool according to the mapping scheme of the VRB to the PRB. The output device transmits a signal using the mapped PRB.

In a first possible implementation manner, the processor determines a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool, and specifically includes:

and when the time domain correlation weight is 1 and the frequency domain correlation weight is 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number. When the number of sub-bands contained in the virtual resource pool is even, determining that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and the time slot and the PRB corresponding to the VRB located in the previous time slot of the sub-band and the time slot is equal to 1/2 n, wherein n is the number of sub-bands contained in the virtual resource pool. It is determined that the hop distance between the PRB corresponding to the VRB located in the sub-band and slot and the PRB corresponding to the VRB located in the sub-band and slot next to the sub-band and slot is equal to 1/2 × n-1.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, after the determining, by the processor, whether the number of sub-bands included in the virtual resource pool is an even number, the method further includes:

when the number of the sub-bands contained in the virtual resource pool is odd, determining the PRB corresponding to the VRB of the sub-band and the time slot and the PRB of the previous time slot of the sub-band and the time slotThe frequency hopping distance between PRBs corresponding to VRBs is equal to

Determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the next time slot of the sub-band and the time slot is equal to

With reference to possible implementation manners of the fourth aspect, in a third possible implementation manner, the determining, by the processor, a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool specifically includes:

and when the time domain correlation weight is 0 and the frequency domain correlation weight is 1, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number. When the number of sub-bands included in the virtual resource pool is even, it is determined that the frequency hopping distance between the PRB corresponding to the VRBs located in the sub-band and in the time slot and the PRB corresponding to the VRBs located in the sub-band and spaced by 1/2 × n time slots is 1, and n is the number of sub-bands included in the virtual resource pool. And determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the sub-band and spaced by 1/2 n-1 time slots is 1.

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner, after the determining, by the processor, whether the number of sub-bands included in the virtual resource pool is an even number, the method further includes:

The frequency hopping distance between PRBs corresponding to the VRBs of each time slot is 1. Determining PRBs corresponding to the VRBs of the sub-band and time slot and the intervals of the PRBs

With reference to any one of the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner, a cycle period of a VRB corresponding to a PRB in a mapped physical resource pool is the number of subbands included in the virtual resource pool.

With reference to possible implementation manners of the fourth aspect, in a sixth possible implementation manner, the determining, by the processor, a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool specifically includes:

and when the time domain correlation weight and the frequency domain correlation weight are not both 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number. When the number of the sub-bands included in the virtual resource pool is even, determining that the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2 × n, where n is the number of the sub-bands included in the virtual resource pool. And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode. And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, wherein m is the minimum weight in the time-domain correlation weight and the frequency-domain correlation weight. And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired.

With reference to the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner, after the determining, by the processor, whether the number of sub-bands included in the virtual resource pool is an even number, the method further includes:

And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode. When the mapping scheme from the VRB to the PRB can not be obtained, adding the current time frequencyAnd subtracting m from the weight distance to obtain an updated time-frequency weighting distance. And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired.

With reference to the possible implementation manners of the fourth aspect, in an eighth possible implementation manner, the sending times of the signals are the same or different by one time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a signal transmission method provided in an embodiment of the present invention;

fig. 2A is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2B is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2C is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2D is an interface diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2E is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2F is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 2G is an interface schematic diagram of a mapping scheme of VRBs to PRBs provided in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a signal transmission apparatus provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present invention.

Detailed Description

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

Referring to fig. 1, fig. 1 is a schematic flow chart of a signal transmission method provided in an embodiment of the present invention, where the signal transmission method in the embodiment of the present invention at least includes:

s101, determining the sub-frequency bands contained in the virtual resource pool, and the sub-frequency bands and the time slots contained in the physical resource pool.

The terminal device may determine the sub-bands contained in the virtual resource pool, and the sub-bands and time slots contained in the physical resource pool. The terminal device may be a base station or a User Equipment (UE). The physical resource pool comprises at least two sub-frequency bands and at least two time slots, and the sub-frequency bands contained in the physical resource pool are greater than or equal to the sub-frequency bands contained in the virtual resource pool. The sub-bands may be used to indicate frequencies included in the virtual resource pool or the physical resource pool, and the time slots may be used to indicate time slots included in the virtual resource pool or the physical resource pool, for example, an interface diagram of mapping VRBs to PRBs shown in fig. 2A is taken as an example, the sub-bands included in the virtual resource pool are 0 to 7, the time slots included in the virtual resource pool are slots 1 to 4, the sub-bands included in the physical resource pool are 0 to 7, and the time slots included in the physical resource pool are slots 1 to 4.

S102, acquiring a time domain correlation weight and a frequency domain correlation weight.

The terminal device may obtain the time domain correlation weight and the frequency domain correlation weight. When the terminal device only considers the correlation of the channel in the time domain, the time domain correlation weight may be set to 1, and the frequency domain correlation weight may be set to 0. When the terminal device considers only the correlation of the channel in the frequency domain, the time-domain correlation weight may be set to 0 and the frequency-domain correlation weight may be set to 1. When the terminal device considers the correlation of the channel in the time domain and the frequency domain simultaneously, the terminal device may obtain the preset time domain correlation weight and the preset frequency domain correlation weight, where the preset time domain correlation weight and the preset frequency domain correlation weight are both not 0.

S103, determining a mapping scheme from the virtual resource block to the physical resource block according to the time domain correlation weight, the frequency domain correlation weight and the number of the sub-frequency bands contained in the virtual resource pool.

The terminal device may determine a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool. In a specific implementation, no matter whether the subbands included in the physical resource pool are continuous or discontinuous, the terminal device may determine the mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool.

In an alternative embodiment, when the time-domain correlation weight is 1 and the frequency-domain correlation weight is 0, the terminal device may determine whether the number of sub-bands included in the virtual resource pool is an even number. When the number of sub-bands contained in the virtual resource pool is even, determining that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and the time slot and the PRB corresponding to the VRB located in the previous time slot of the sub-band and the time slot is equal to 1/2 n, wherein n is the number of sub-bands contained in the virtual resource pool. It is determined that the hop distance between the PRB corresponding to the VRB located in the sub-band and slot and the PRB corresponding to the VRB located in the sub-band and slot next to the sub-band and slot is equal to 1/2 × n-1.

Taking an interface schematic diagram of the mapping scheme from the VRB to the PRB shown in fig. 2B as an example, the virtual resource pool includes 12 sub-bands, which are 0 to 11 respectively. The physical resource pool comprises 12 sub-bands and 20 time slots. The terminal devices may arrange 01234567891011 in order in the first slot of the physical resource pool. The terminal device may determine that a frequency hopping distance between the PRB corresponding to the VRB in the second timeslot and the PRB corresponding to the VRB in the first timeslot and located in the subband is equal to 6, that is, the PRB located in the first timeslot is cyclically moved from right to left by 6 subbands, and then the PRBs located in the second timeslot in the mapped physical resource pool sequentially are: 67891011012345. the terminal device may further determine that a frequency hopping distance between the PRB corresponding to the VRB located in the subband and the third slot and the PRB corresponding to the VRB located in the subband and the second slot is equal to 5, that is, the PRB located in the second slot is cyclically moved from right to left by 5 subbands, and then the PRBs located in the third slot in the mapped physical resource pool sequentially are: 11012345678910. similarly, the terminal device may determine that the hopping distance between the PRB corresponding to the VRB located in the subband and in the fourth slot and the PRB corresponding to the VRB located in the subband and in the third slot is equal to 6, and the hopping distance between the PRB corresponding to the VRB located in the subband and in the fifth slot and the PRB corresponding to the VRB located in the subband and in the fourth slot is equal to 5. In the above manner, the mapping scheme of VRBs to PRBs obtained by the terminal device may be as shown in fig. 2B.

Note that the moving direction of the PRB in the second slot obtained by moving the PRB in the first slot is the same as the moving direction of the PRB in the third slot obtained by moving the PRB in the second slot. The PRB shifting method includes, but is not limited to, the above-described method, for example, a PRB in the first slot is cyclically shifted from left to right to obtain a PRB in the second slot, and a PRB in the second slot is cyclically shifted from left to right to obtain a PRB in the third slot. In addition, when the number of subbands included in the virtual resource pool is even, the terminal device may determine that a frequency hopping distance between a PRB corresponding to a VRB located in a subband and in a slot and a PRB corresponding to a VRB located in a previous slot of the subband and in the slot is equal to 1/2 × n-1. It is determined that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and in the timeslot and the PRB corresponding to the VRB located in the subsequent timeslot of the sub-band and in the timeslot is equal to 1/2 × n, which is not limited by the embodiment of the present invention.

In an alternative embodiment, when the time-domain correlation weight is 1 and the frequency-domain correlation weight is 0, the terminal device may determine whether the number of sub-bands included in the virtual resource pool is an even number. When the number of the sub-bands contained in the virtual resource pool is odd, determining that the frequency hopping distance between the PRB corresponding to the VRB of the sub-band and time slot and the PRB corresponding to the VRB of the previous time slot of the sub-band and time slot is equal to

Determining PRBs corresponding to VRBs located in sub-bands and time slots and PRBs located in sub-bandsThe frequency hopping distance between PRBs corresponding to the VRB of the next time slot of the band and the time slot is equal to

Wherein the content of the first and second substances,

meaning that 1/2 n is rounded up.

Meaning that 1/2 n is rounded down.

Taking an interface schematic diagram of the mapping scheme from the VRB to the PRB shown in fig. 2C as an example, the virtual resource pool includes 5 sub-bands, which are 0 to 4 respectively. The physical resource pool comprises 12 sub-bands and 20 time slots. The terminal device may cyclically arrange each resource block located in the first time slot in the virtual resource pool into the first time slot of the physical resource pool, that is, the PRB located in the first time slot in the physical resource pool sequentially is: 012340123401. the terminal device may determine that a frequency hopping distance between the PRB corresponding to the VRB in the second timeslot and the PRB corresponding to the VRB in the first timeslot and the subband is equal to 3, that is, the PRB in the first timeslot is circularly moved from left to right by 3 subbands, and then the PRBs in the second timeslot in the mapped physical resource pool sequentially are: 234012340123. the terminal device may further determine that a frequency hopping distance between the PRB corresponding to the VRB located in the subband and in the third time slot and the PRB corresponding to the VRB located in the subband and in the second time slot is equal to 2, that is, the PRB located in the second time slot is cyclically moved from right to left by 2 subbands, and then the PRBs located in the third time slot in the mapped physical resource pool sequentially are: 401234012340. similarly, the terminal device may determine that the hopping distance between the PRB corresponding to the VRB located in the subband and in the fourth slot and the PRB corresponding to the VRB located in the subband and in the third slot is equal to 3, and the hopping distance between the PRB corresponding to the VRB located in the subband and in the fifth slot and the PRB corresponding to the VRB located in the subband and in the fourth slot is equal to 2. In the above manner, the mapping scheme of VRBs to PRBs obtained by the terminal device may be as shown in fig. 2C.

Note that the moving direction of the PRB in the second slot obtained by moving the PRB in the first slot is opposite to the moving direction of the PRB in the third slot obtained by moving the PRB in the second slot. The PRB shifting method includes, but is not limited to, the above-mentioned method, for example, a PRB in the first slot is cyclically shifted from right to left to obtain a PRB in the second slot, and a PRB in the second slot is cyclically shifted from left to right to obtain a PRB in the third slot. In addition, when the number of subbands included in the virtual resource pool is odd, the terminal device may determine that a frequency hopping distance between a PRB corresponding to a VRB located in a subband and slot and a PRB corresponding to a VRB located in a previous slot of the subband and slot is equal to

And are not particularly limited by the embodiments of the present invention.

In an alternative embodiment, when the time-domain correlation weight is 0 and the frequency-domain correlation weight is 1, the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number. When the number of sub-bands included in the virtual resource pool is even, it is determined that the frequency hopping distance between the PRB corresponding to the VRBs located in the sub-band and in the time slot and the PRB corresponding to the VRBs located in the sub-band and spaced by 1/2 × n time slots is 1, and n is the number of sub-bands included in the virtual resource pool. And determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the sub-band and spaced by 1/2 n-1 time slots is 1.

Taking an interface schematic diagram of the mapping scheme from VRBs to PRBs shown in fig. 2D as an example, the virtual resource pool includes 12 sub-bands, which are 0 to 11 respectively. The physical resource pool comprises 12 sub-bands and 20 time slots. The terminal devices may arrange 01234567891011 in order in the first slot of the physical resource pool. The terminal device may determine that a PRB in the physical resource pool located in the first sub-band and corresponding to the VRB0 in the first time slot is 6 time slots apart from a PRB in the second sub-band and corresponding to the VRB0 in the first sub-band, that is, the PRB in the first time slot is cyclically shifted from left to right by 1 sub-band, and then the PRB in the seventh time slot in the mapped physical resource pool is: 11012345678910. the terminal device may further determine that a PRB corresponding to the VRB0 in the second sub-band and the seventh slot is 5 slots apart from a PRB corresponding to the VRB0 in the third sub-band, that is, the PRB in the seventh slot is cyclically moved from left to right by 1 sub-band, and then the PRBs in the second slot in the mapped physical resource pool are: 10110123456789. similarly, the terminal device may determine that the PRB corresponding to the VRB located in the third subband and the second timeslot is 6 timeslots apart from the PRB corresponding to the VRB located in the fourth subband, and obtain the PRB located in the eighth timeslot in the physical resource pool. And 5 time slots are arranged between the PRB corresponding to the VRB positioned in the fourth sub-band and the eighth time slot and the PRB corresponding to the VRB positioned in the fifth sub-band, so that the PRB positioned in the third time slot in the physical resource pool is obtained. In the above manner, the mapping scheme of VRBs to PRBs obtained by the terminal device may be as shown in fig. 2D.

In an alternative embodiment, when the time-domain correlation weight is 0 and the frequency-domain correlation weight is 1, the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number. When the number of the sub-bands contained in the virtual resource pool is odd, determining the PRB corresponding to the VRB of the time slot and the PRB which is positioned in the sub-band and is spaced from the PRB

Taking an interface schematic diagram of the mapping scheme from VRBs to PRBs shown in fig. 2E as an example, the virtual resource pool includes 5 sub-bands, which are 0 to 4 respectively. The physical resource pool comprises 12 sub-bands and 20 time slots. The terminal devices may arrange 012340123401 in order in the first slot of the physical resource pool. The terminal device may determine that a PRB in the physical resource pool located in the first sub-band and corresponding to the VRB0 in the first timeslot is 3 timeslots apart from a PRB in the second sub-band and corresponding to the VRB0 in the second sub-band, that is, a PRB in the fourth timeslot is cyclically shifted from left to right by 1 sub-band, and then the PRBs in the fourth timeslot in the mapped physical resource pool are: 401234012340. the terminal device may further determine that a PRB corresponding to the VRB0 in the second sub-band and the fourth time slot is spaced by 2 time slots from a PRB corresponding to the VRB0 in the third sub-band, that is, the PRB in the fourth time slot is cyclically shifted from left to right by 1 sub-band, and then the PRBs in the second time slot in the mapped physical resource pool are: 340123401234. similarly, the terminal device may determine that the PRB corresponding to the VRB located in the third sub-band and located in the second timeslot is 3 timeslots apart from the PRB corresponding to the VRB located in the fourth sub-band, and obtain the PRB located in the fifth timeslot in the physical resource pool. And 2 time slots are arranged between the PRB corresponding to the VRB positioned in the fourth sub-band and the fifth time slot and the PRB corresponding to the VRB positioned in the sixth sub-band, and the PRB positioned in the third time slot in the physical resource pool is obtained. In the above manner, the mapping scheme of VRBs to PRBs obtained by the terminal device may be as shown in fig. 2E.

In an alternative embodiment, when the time-domain correlation weight and the frequency-domain correlation weight are not both 0, the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number. When the number of the sub-bands included in the virtual resource pool is even, determining that the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2 × n. And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode. And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, wherein m is the minimum weight in the time-domain correlation weight and the frequency-domain correlation weight. And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired.

Taking an interface schematic diagram of the mapping scheme from VRBs to PRBs shown in fig. 2F as an example, the virtual resource pool includes 12 sub-bands, which are 0 to 11 respectively. The physical resource pool comprises 12 sub-bands and 20 time slots. The time domain correlation weight and the frequency domain correlation weight obtained by the terminal device are both 1. The terminal devices may arrange 01234567891011 in order in the first slot of the physical resource pool. The terminal device determines that the time-frequency weighting distance between PRBs corresponding to VRBs located in the same sub-band and different time slots is 6, and then the second time slots of the physical resource pool may be arranged in sequence as follows: 78910110123456, wherein the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the second slot is: 1 (frequency domain correlation weight) × 5+1 (time domain correlation weight) × 1 ═ 6, and the above condition is satisfied. If the PRB corresponding to the VRB0 in the third slot of the physical resource pool is located in the first sub-band, the eleventh sub-band or the twelfth sub-band, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition. For example, the third time slot of the physical resource pool is sequentially arranged as: 23456789101101, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot is: 1 × 2+1 × 2 ═ 4 < 6, the above conditions were not satisfied. The terminal device cannot determine the mapping scheme from the VRB to the PRB through the permutation method.

Optionally, the second time slots of the physical resource pool may be sequentially arranged as: 67891011012345, wherein the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the second slot is: 1 × 6+1 × 1 ═ 7, the above conditions are satisfied. If the PRB corresponding to the VRB0 in the third slot of the physical resource pool is located in the first sub-band, the second sub-band or the twentieth sub-band, the time-frequency weighted distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition. For example, the third time slot of the physical resource pool is sequentially arranged as: 12345678910110, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot is: 1 × 1+1 × 2 ═ 3 < 6, and the above conditions were not satisfied. The terminal device cannot determine the mapping scheme from the VRB to the PRB through the permutation method.

Optionally, the second time slots of the physical resource pool may be sequentially arranged as: 56789101101234, wherein the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the second slot is: 1 × 5+1 × 1 ═ 6, the above conditions are satisfied. If the PRB corresponding to the VRB0 in the third slot of the physical resource pool is located in the first sub-band, the second sub-band or the third sub-band, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition. For example, the third time slot of the physical resource pool is sequentially arranged as: 10110123456789, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot is: 1 × 2+1 × 2 ═ 4 < 6, the above conditions were not satisfied. The terminal device cannot determine the mapping scheme from the VRB to the PRB through the permutation method.

Further, the terminal device may subtract m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, that is, 6-1-5. The second time slots of the physical resource pool may be arranged in sequence as follows: 89101234567, 78910110123456, 67891011012345, 56789101101234, or 45678910110123, the terminal device cannot determine the mapping scheme of VRBs to PRBs by the above arrangement method.

Further, the terminal device may subtract m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, that is, 5-1-4. The terminal device may be as shown in fig. 2F by the mapping scheme of VRBs to PRBs determined exhaustively.

In an alternative embodiment, when the time-domain correlation weight and the frequency-domain correlation weight are not both 0, the terminal device may determine whether the number of subbands included in the virtual resource pool is an even number. When the sub-frequency included in the virtual resource poolWhen the number of the bands is odd, determining the time-frequency weighting distance between PRBs corresponding to VRBs in different time slots and positioned in the same sub-band as

Taking an interface schematic diagram of a mapping scheme from VRBs to PRBs shown in fig. 2G as an example, the virtual resource pool includes 9 sub-bands, which are 0 to 8 respectively. The physical resource pool comprises 24 sub-bands and 20 time slots. The time domain correlation weight and the frequency domain correlation weight obtained by the terminal device are both 1. The terminal devices may arrange 012345678012345678012345 in order in the first slot of the physical resource pool. The terminal device determines that the time-frequency weighting distance between PRBs corresponding to VRBs located in the same sub-band and different time slots is 5, and then the second time slots of the physical resource pool may be arranged in sequence as follows: 567801234567801234567801, wherein the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the second slot is: 1 × 4+1 × 1 ═ 5, the above conditions are satisfied. If the PRB corresponding to the VRB0 in the third slot of the physical resource pool is located in the first sub-band, the ninth sub-band, the tenth sub-band, the eighteenth sub-band or the nineteenth sub-band, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition. For example, the third time slot of the physical resource pool is sequentially arranged as: 123456780123456780123456, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first time slot and the PRB corresponding to the VRB0 of the third time slot is: 1 × 1+1 × 2 ═ 3 < 5, and the above conditions were not satisfied. The terminal device cannot determine the mapping scheme from the VRB to the PRB through the permutation method.

Optionally, the second time slots of the physical resource pool may be sequentially arranged as: 456780123456780123456780, wherein the time-frequency weighted distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the second slot is: 1 × 4+1 × 1 ═ 5, the above conditions are satisfied. If the PRB corresponding to the VRB0 in the third slot of the physical resource pool is located in the tenth sub-band, the eleventh sub-band, the nineteenth sub-band or the twentieth sub-band, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the second slot and the PRB corresponding to the VRB0 of the third slot satisfies the above condition, and the time-frequency weighting distance between the PRB corresponding to the VRB0 of the first slot and the PRB corresponding to the VRB0 of the third slot does not satisfy the above condition. For example, the third time slot of the physical resource pool is sequentially arranged as: 012345678012345678012345, the time-frequency weighting distance between the PRB corresponding to the VRB0 of the second time slot and the PRB corresponding to the VRB0 of the third time slot is: 1 × 1+1 × 1 ═ 2 < 5, the above conditions were not satisfied. The terminal equipment cannot determine the mapping scheme from the VRBs to the physical resource blocks by the above permutation method.

Further, the terminal device may subtract m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, that is, 5-1-4. The terminal device may be as shown in fig. 2G by the mapping scheme of VRBs to PRBs determined exhaustively.

And S104, mapping the virtual resource blocks in the virtual resource pool to the physical resource blocks in the physical resource pool according to the mapping scheme from the virtual resource blocks to the physical resource blocks.

The terminal device may map the VRB in the virtual resource pool to the PRB in the physical resource pool according to the obtained mapping scheme from the VRB to the PRB. Taking an interface schematic diagram of a mapping scheme from VRBs to PRBs shown in fig. 2A as an example, VRBs in each time slot of a virtual resource pool are sequentially arranged as follows: 01234567, the VRBs in the first time slot of the mapped physical resource pool are arranged in sequence as follows: 23456701, the VRBs in the second time slot of the mapped physical resource pool are arranged in sequence as follows: 67012345, the VRBs in the third time slot of the mapped physical resource pool are arranged in sequence as follows: 12345670, the VRBs in the fourth slot of the mapped physical resource pool are arranged in sequence as follows: 56701234.

in a specific implementation, if only the correlation of the channel in the time domain or the frequency domain is considered, the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the number of subbands included in the virtual resource pool. Taking the interface schematic diagram of the mapping scheme from the VRBs to the PRBs shown in fig. 2B as an example, the cycle period of the VRBs corresponding to the PRBs in the mapped physical resource pool is 12, that is, the arrangement manner of the VRBs corresponding to the PRBs in the first time slot is the same as the arrangement manner of the VRBs corresponding to the PRBs in the thirteenth time slot, the arrangement manner of the VRBs corresponding to the PRBs in the second time slot is the same as the arrangement manner of the VRBs corresponding to the PRBs in the fourteenth time slot, and so on. Taking the interface schematic diagram of the mapping scheme from the VRBs to the PRBs shown in fig. 2C as an example, the cycle period of the VRBs corresponding to the PRBs in the mapped physical resource pool is 5, that is, the arrangement manner of the VRBs corresponding to the PRBs in the first time slot is the same as the arrangement manner of the VRBs corresponding to the PRBs in the sixth time slot, the arrangement manner of the VRBs corresponding to the PRBs in the second time slot is the same as the arrangement manner of the VRBs corresponding to the PRBs in the seventh time slot, and so on.

And S105, transmitting the signal by using the mapped physical resource block.

The terminal device may transmit a signal using the mapped PRBs. Taking an interface schematic diagram of the mapping scheme from the VRBs to the PRBs shown in fig. 2A as an example, the VRBs occupied by the signal 2A to be transmitted are located in the third sub-band of the first timeslot, and the VRBs in the first timeslot of the physical resource pool after mapping are sequentially arranged as follows: 23456701, the terminal device may use the PRB in the physical resource pool located in the first sub-band of the first slot to transmit the signal 2 a; the VRB occupied by the signal 2b to be transmitted is located in the third sub-band of the second time slot, and the VRBs in the second time slot of the mapped physical resource pool are sequentially arranged as follows: 67012345, the terminal device may use the PRB in the physical resource pool located in the fifth sub-band of the second slot to transmit the signal 2 b; the VRB occupied by the signal 4a to be transmitted is located in the fifth sub-band of the first time slot, and the VRBs in the first time slot of the mapped physical resource pool are sequentially arranged as follows: 23456701, the terminal device may transmit the signal 4a using the PRB in the physical resource pool located in the third sub-band of the first slot.

In a specific implementation, according to the mapping scheme from the VRB to the PRB determined in the embodiment of the present invention, the VRB in the virtual resource pool is mapped to the PRB in the physical resource pool, and the mapped PRB is used to transmit signals, where the transmission times of each signal are the same or differ once. Taking the interface schematic diagram of the mapping scheme from VRBs to PRBs shown in fig. 2A as an example, the intervals between PRBs corresponding to VRBs located in different time slots and in the same sub-band are large, and if deep fading occurs in one sub-band, the number of corrupted signals is one. In the conventional mapping scheme from the VRBs to the PRBs, one subframe is taken as a cycle period, that is, the arrangement mode of the VRBs corresponding to the PRBs in the first time slot is the same as the arrangement mode of the VRBs corresponding to the PRBs in the third time slot, the arrangement mode of the VRBs corresponding to the PRBs in the second time slot is the same as the arrangement mode of the VRBs corresponding to the PRBs in the fourth time slot, and if one subband is deeply faded, two signals are destroyed. That is, if deep fading occurs, the embodiments of the present invention can reduce the number of corrupted signals and improve the effectiveness of signal transmission.

In the signal transmission method shown in fig. 1, the sub-bands included in the virtual resource pool, and the sub-bands and time slots included in the physical resource pool are determined, the time-domain correlation weight and the frequency-domain correlation weight are obtained, the mapping scheme from the VRB to the PRB is determined according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of the sub-bands included in the virtual resource pool, the VRB in the virtual resource pool is mapped to the PRB in the physical resource pool according to the mapping scheme from the VRB to the PRB, and the mapped PRB is used to transmit a signal, so that the effectiveness of signal transmission can be improved.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a signal transmission apparatus provided in an embodiment of the present invention, wherein the signal transmission apparatus provided in the embodiment of the present invention may be used to implement part or all of the processes in the embodiment of the signal transmission method described in conjunction with fig. 1 of the present invention. As shown in the figure, the signal transmission apparatus in the embodiment of the present invention may include at least a subband determining unit 301, a weight obtaining unit 302, a mapping scheme determining unit 303, a mapping unit 304, and a signal sending unit 305, where:

a subband determining unit 301, configured to determine subbands included in the virtual resource pool, and subbands and time slots included in a physical resource pool, where the physical resource pool includes at least two subbands and at least two time slots, and the subbands included in the physical resource pool are greater than or equal to the subbands included in the virtual resource pool.

A weight obtaining unit 302, configured to obtain a time domain correlation weight and a frequency domain correlation weight.

A mapping scheme determining unit 303, configured to determine a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool.

A mapping unit 304, configured to map the VRBs in the virtual resource pool to the PRBs in the physical resource pool according to a mapping scheme from the VRBs to the PRBs.

A signal transmitting unit 305, configured to transmit a signal using the mapped PRB.

In an alternative embodiment, the mapping scheme determining unit 303 is specifically configured to:

When the number of sub-bands contained in the virtual resource pool is even, determining that the frequency hopping distance between the PRB corresponding to the VRB located in the sub-band and the time slot and the PRB corresponding to the VRB located in the previous time slot of the sub-band and the time slot is equal to 1/2 n, wherein n is the number of sub-bands contained in the virtual resource pool.

It is determined that the hop distance between the PRB corresponding to the VRB located in the sub-band and slot and the PRB corresponding to the VRB located in the sub-band and slot next to the sub-band and slot is equal to 1/2 × n-1.

Further optionally, after the mapping scheme determining unit 303 determines whether the number of sub-bands included in the virtual resource pool is an even number, the mapping scheme determining unit is further configured to:

When the number of sub-bands included in the virtual resource pool is even, it is determined that the frequency hopping distance between the PRB corresponding to the VRBs located in the sub-band and in the time slot and the PRB corresponding to the VRBs located in the sub-band and spaced by 1/2 × n time slots is 1, and n is the number of sub-bands included in the virtual resource pool.

And determining that the frequency hopping distance between the PRB corresponding to the VRB positioned in the sub-band and the time slot and the PRB corresponding to the VRB positioned in the sub-band and spaced by 1/2 n-1 time slots is 1.

Determining PRBs corresponding to the VRBs of the sub-band and time slot and the intervals of the PRBs

Further optionally, the cycle period of the VRB corresponding to the PRB in the mapped physical resource pool is the number of subbands included in the virtual resource pool.

When the number of the sub-bands included in the virtual resource pool is even, determining that the time-frequency weighted distance between the PRBs corresponding to the VRBs located in the same sub-band and different time slots is 1/2 × n, where n is the number of the sub-bands included in the virtual resource pool.

And judging whether to acquire a mapping scheme from the VRB to the PRB or not in an exhaustive mode.

And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, wherein m is the minimum weight in the time-domain correlation weight and the frequency-domain correlation weight.

And judging whether to acquire the mapping scheme from the VRB to the PRB or not in an exhaustive mode until the mapping scheme from the VRB to the PRB is acquired.

And when the mapping scheme from the VRB to the PRB cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance.

In alternative embodiments, the respective signals are transmitted the same number of times or differ by one time.

In the signal transmission apparatus shown in fig. 3, subband determining section 301 determines subbands included in the virtual resource pool, subbands and slots included in the physical resource pool, weight obtaining section 302 obtains time-domain correlation weights and frequency-domain correlation weights, mapping scheme determining section 303 determines a mapping scheme from VRBs to PRBs according to the time-domain correlation weights, the frequency-domain correlation weights, and the number of subbands included in the virtual resource pool, mapping section 304 maps VRBs in the virtual resource pool to PRBs in the physical resource pool according to the mapping scheme from VRBs to PRBs, and signal transmitting section 305 transmits a signal using the mapped PRBs, thereby improving the effectiveness of signal transmission.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present invention. As shown in fig. 4, the terminal device may include: a processor 401, a memory 402, and an output device 403. The processor 401 is connected to the memory 402 and the output device 403, for example, the processor 401 may be connected to the memory 402 and the output device 403 through a bus.

The processor 401 may be a Central Processing Unit (CPU), a Network Processor (NP), or the like.

The memory 402 may specifically be used for storing a mapping scheme of VRBs to PRBs, etc. Memory 402 may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD), or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

An output device 403 for transmitting signals. The output means may comprise a network interface or a radio frequency transmitter or the like.

The processor 401 and the output device 403 call the program stored in the memory 402, and may perform the following operations:

the processor 401 determines the sub-bands included in the virtual resource pool, and the sub-bands and the time slots included in the physical resource pool, where the physical resource pool includes at least two sub-bands and at least two time slots, and the sub-bands included in the physical resource pool are greater than or equal to the sub-bands included in the virtual resource pool.

The processor 401 obtains time domain correlation weights and frequency domain correlation weights.

The processor 401 determines a mapping scheme from the VRB to the PRB according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool.

The processor 401 maps the VRBs in the virtual resource pool to the PRBs in the physical resource pool according to the mapping scheme of the VRBs to the PRBs.

The output device 403 transmits a signal using the mapped PRB.

In an alternative embodiment, the processor 401 determines, according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool, a mapping scheme from the VRB to the PRB, which specifically includes:

Further optionally, after the processor 401 determines whether the number of the sub-bands included in the virtual resource pool is an even number, the method further includes:

Specifically, the terminal device described in the embodiment of the present invention may be used to implement part or all of the flow in the embodiment of the signal transmission method described in conjunction with fig. 1 of the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The logic and/or steps represented in the flowcharts or otherwise described herein, such as a program listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer case (magnetic device), a random access memory, a read only memory, an erasable programmable read only memory, an optical fiber device, and a portable compact disc read only memory. Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a programmable gate array, a field programmable gate array, or the like.

In addition, the modules in the embodiments of the present invention may be implemented in the form of hardware, or may be implemented in the form of software functional modules. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A signal transmission method, comprising:

determining a mapping scheme from a virtual resource block to a physical resource block according to the time domain correlation weight, the frequency domain correlation weight and the number of sub-frequency bands contained in the virtual resource pool;

mapping the virtual resource blocks in the virtual resource pool to the physical resource blocks in the physical resource pool according to the mapping scheme from the virtual resource blocks to the physical resource blocks;

and transmitting the signal by using the mapped physical resource block.

2. The method of claim 1, wherein the determining a mapping scheme from virtual resource blocks to physical resource blocks according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool comprises:

when the time domain correlation weight is 1 and the frequency domain correlation weight is 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number;

when the number of sub-bands contained in the virtual resource pool is an even number, determining that a frequency hopping distance between a physical resource block corresponding to a virtual resource block which is located in a sub-band and a time slot and a physical resource block corresponding to a virtual resource block which is located in the sub-band and is located in a previous time slot of the time slot is equal to 1/2 × n, wherein n is the number of sub-bands contained in the virtual resource pool;

and determining that the frequency hopping distance between the physical resource block corresponding to the virtual resource block which is positioned in the sub-frequency band and is positioned in the time slot and the physical resource block corresponding to the virtual resource block which is positioned in the sub-frequency band and is positioned in the next time slot is equal to 1/2 x n-1.

3. The method of claim 2, wherein after determining whether the number of subbands included in the virtual resource pool is an even number, the method further comprises:

when the number of the sub-frequency bands contained in the virtual resource pool is an odd number, determining that the frequency hopping distance between the physical resource block corresponding to the virtual resource block which is positioned in the sub-frequency band and is positioned in the time slot and the physical resource block corresponding to the virtual resource block which is positioned in the sub-frequency band and is positioned in the previous time slot of the time slot is equal to the frequency hopping distance between the physical resource block corresponding to the virtual resource block which is

Determining that a frequency hopping distance between a physical resource block corresponding to the virtual resource block located in the sub-band and the slot and a physical resource block corresponding to the virtual resource block located in the sub-band and the slot next to the sub-band and the slot is equal to

4. The method of claim 1, wherein the determining a mapping scheme from virtual resource blocks to physical resource blocks according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool comprises:

when the time domain correlation weight is 0 and the frequency domain correlation weight is 1, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number;

when the number of sub-bands contained in the virtual resource pool is an even number, determining that the frequency hopping distance between a physical resource block corresponding to a virtual resource block which is located in a sub-band and is a time slot and a physical resource block corresponding to a virtual resource block which is located in the sub-band and is spaced by 1/2 × n time slots is 1, wherein n is the number of sub-bands contained in the virtual resource pool;

and determining that the frequency hopping distance between the physical resource blocks corresponding to the virtual resource blocks which are positioned in the sub-frequency band and are separated by 1/2 x n-1 time slots is 1.

5. The method as claimed in claim 4, wherein after determining whether the number of subbands included in the virtual resource pool is an even number, the method further comprises:

when the number of the sub-frequency bands contained in the virtual resource pool is odd, determining the physical resource blocks corresponding to the virtual resource blocks which are positioned in the sub-frequency bands and are separated from the virtual resource blocks which are positioned in the sub-frequency bands and are positioned in the time slots

The frequency hopping distance between the physical resource blocks corresponding to the virtual resource blocks of each time slot is 1;

determining a physical resource block corresponding to a virtual resource block positioned in a sub-band and a time slot and a physical resource block positioned in the sub-band and spaced by an interval

The frequency hopping distance between the physical resource blocks corresponding to the virtual resource blocks of each slot is 1.

6. The method according to any one of claims 2 to 5, wherein a cycle period of a virtual resource block corresponding to a physical resource block in the mapped physical resource pool is the number of sub-bands included in the virtual resource pool.

7. The method of claim 1, wherein the determining a mapping scheme from virtual resource blocks to physical resource blocks according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool comprises:

when the time domain correlation weight and the frequency domain correlation weight are not both 0, judging whether the number of the sub-frequency bands contained in the virtual resource pool is an even number;

when the number of sub-bands contained in the virtual resource pool is an even number, determining that the time-frequency weighting distance between physical resource blocks corresponding to virtual resource blocks which are located in the same sub-band and different time slots is 1/2 × n, wherein n is the number of sub-bands contained in the virtual resource pool;

judging whether to acquire a mapping scheme from a virtual resource block to a physical resource block or not in an exhaustion mode;

when the mapping scheme from the virtual resource block to the physical resource block cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance, wherein m is the minimum weight in the time-domain correlation weight and the frequency-domain correlation weight;

and executing the exhaustive mode to judge whether to acquire the mapping scheme from the virtual resource block to the physical resource block until the mapping scheme from the virtual resource block to the physical resource block is acquired.

8. The method of claim 7, wherein after determining whether the number of subbands included in the virtual resource pool is an even number, the method further comprises:

when the number of the sub-frequency bands contained in the virtual resource pool is odd, determining that the time-frequency weighting distance between the physical resource blocks corresponding to the virtual resource blocks which are positioned in the same sub-frequency band and different time slots is equal to

when the mapping scheme from the virtual resource block to the physical resource block cannot be obtained, subtracting m from the current time-frequency weighting distance to obtain an updated time-frequency weighting distance;

9. The method of claim 1, wherein the number of transmissions of each of the signals is the same or differs once.

10. A computer storage medium, characterized in that it stores a program which, when executed by a processor, is able to implement the method of any one of claims 1 to 9.

11. A signal transmission apparatus, comprising:

a sub-band determining unit, configured to determine a sub-band included in a virtual resource pool, and a sub-band and a time slot included in a physical resource pool, where the physical resource pool includes at least two sub-bands and at least two time slots, and the sub-band included in the physical resource pool is greater than or equal to the sub-band included in the virtual resource pool;

the weight obtaining unit is used for obtaining a time domain correlation weight and a frequency domain correlation weight;

a mapping scheme determining unit, configured to determine a mapping scheme from a virtual resource block to a physical resource block according to the time domain correlation weight, the frequency domain correlation weight, and the number of subbands included in the virtual resource pool;

a mapping unit, configured to map the virtual resource blocks in the virtual resource pool to the physical resource blocks in the physical resource pool according to a mapping scheme from the virtual resource blocks to the physical resource blocks;

and a signal transmitting unit, configured to transmit a signal using the mapped physical resource block.

12. The apparatus according to claim 11, wherein the mapping scheme determining unit is specifically configured to:

13. The apparatus of claim 12, wherein after the mapping scheme determining unit determines whether the number of subbands included in the virtual resource pool is an even number, the mapping scheme determining unit is further configured to:

14. The apparatus according to claim 11, wherein the mapping scheme determining unit is specifically configured to:

15. The apparatus of claim 14, wherein after the mapping scheme determining unit determines whether the number of subbands included in the virtual resource pool is an even number, the mapping scheme determining unit is further configured to:

16. The apparatus according to any one of claims 12 to 15, wherein a cycle period of a virtual resource block corresponding to a physical resource block in the mapped physical resource pool is a number of sub-bands included in the virtual resource pool.

17. The apparatus according to claim 11, wherein the mapping scheme determining unit is specifically configured to:

18. The apparatus of claim 17, wherein after the mapping scheme determining unit determines whether the number of subbands included in the virtual resource pool is an even number, the mapping scheme determining unit is further configured to:

19. The apparatus of claim 11, wherein the number of transmissions of each of the signals is the same or differs once.

20. A terminal device comprising a processor, a memory and an output device, wherein the memory stores a set of program codes and the processor and the output device call the program codes stored in the memory to perform the following operations:

the processor determines a sub-band included in a virtual resource pool, and a sub-band and a time slot included in a physical resource pool, wherein the physical resource pool includes at least two sub-bands and at least two time slots, and the sub-band included in the physical resource pool is greater than or equal to the sub-band included in the virtual resource pool;

the processor obtains a time domain correlation weight and a frequency domain correlation weight;

the processor determines a mapping scheme from a virtual resource block to a physical resource block according to the time domain correlation weight, the frequency domain correlation weight and the number of sub-frequency bands contained in the virtual resource pool;

the processor maps the virtual resource blocks in the virtual resource pool to the physical resource blocks in the physical resource pool according to the mapping scheme from the virtual resource blocks to the physical resource blocks;

and the output device transmits signals by using the mapped physical resource blocks.

21. The terminal device of claim 20, wherein the processor determines a mapping scheme from a virtual resource block to a physical resource block according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool, and specifically includes:

22. The terminal device of claim 21, wherein after the processor determines whether the number of subbands included in the virtual resource pool is an even number, the method further comprises:

23. The terminal device of claim 20, wherein the processor determines a mapping scheme from a virtual resource block to a physical resource block according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool, and specifically includes:

24. The terminal device of claim 23, wherein after the processor determines whether the number of subbands included in the virtual resource pool is an even number, the method further comprises:

25. The terminal device according to any one of claims 21 to 24, wherein a cycle period of a virtual resource block corresponding to a physical resource block in the mapped physical resource pool is a number of sub-bands included in the virtual resource pool.

26. The terminal device of claim 20, wherein the processor determines a mapping scheme from a virtual resource block to a physical resource block according to the time-domain correlation weight, the frequency-domain correlation weight, and the number of subbands included in the virtual resource pool, and specifically includes:

27. The terminal device of claim 26, wherein after the processor determines whether the number of sub-bands included in the virtual resource pool is an even number, the method further comprises:

28. The terminal device of claim 20, wherein the number of transmissions of each of the signals is the same or differs once.