WO2017054777A1

WO2017054777A1 - Method and device for reducing network latency in radio communication

Info

Publication number: WO2017054777A1
Application number: PCT/CN2016/101239
Authority: WO
Inventors: 蒋琦
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2015-10-02
Filing date: 2016-09-30
Publication date: 2017-04-06
Also published as: CN106561066A; CN106561066B

Abstract

Disclosed are a method and device for reducing network latency in radio communication. A UE receives a first signaling. The first signaling is a physical layer signaling, and comprises scheduling information of first data. The UE transmits, according to the first signaling, the first data in a first physical resource block (PRB) set. The first PRB set is any one of K types of candidate PRB sets, and comprises G PRB subsets. One of the PRB subsets comprises at least one PRB. The G PRB subsets comprise a total of M PRBs. The PRBs in the PRB subsets are continuous in a frequency domain. By designing a new resource allocation type corresponding to a candidate PRB set, the invention ensures that the first data is compatible with a current system during a transmission process, thereby obtaining a high diversity gain, and ensuring a performance gain of a low latency system as a whole.

Description

Method and device for reducing network delay in wireless communication

cross reference

The present application is hereby incorporated by reference in its entirety in its entirety the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire all

Technical field

The present invention relates to a transmission scheme in a wireless communication system, and more particularly to a control channel method and apparatus for low latency transmission based on LTE-Long Term Evolution.

Background technique

In the 3rd (3rd Generation Partner Project) RAN (Radio Access Network) #63 plenary meeting, the problem of reducing the delay of the LTE network is discussed. The delay of the LTE network includes air interface delay, signal processing delay, and transmission delay between nodes. With the upgrade of the wireless access network and the core network, the transmission delay is effectively reduced. With the application of new semiconductors with higher processing speeds, signal processing delays are significantly reduced.

In LTE, a TTI (Transmission Time Interval) or a subframe or a Physical Resource Block (PB) corresponds to one ms (milli-second) in time. An LTE subframe includes two time slots (Time Slots) - a first time slot and a second time slot, respectively. The PUSCH (Physical Uplink Shared Channel) of the existing LTE system is transmitted in a PRB pair manner and supports two resource allocation modes (Resource Allocation Type). The resource allocation mode 0 (Type 0) indicates a continuous VRB (Virtual Resource Block) pair by using a Resource Indication Value (RIV), and is located in the first time slot and/or the second time. The VRB of the slot is mapped to the PRB by frequency hopping (Hopping) to achieve frequency domain diversity gain. Resource allocation mode 1 (Type 1) allocates the entire uplink carrier into multiple RBGs (Resource). Block Group, resource block group), and indicates the RBGs allocated therein to achieve discontinuous resource allocation in the frequency domain.

For a shorter TTI, a problem to be studied is that if the uplink data is transmitted in a PRB instead of a PRB pair, the existing frequency hopping mapping mode of the PUSCH Type 0 resource allocation mode on the second time slot cannot be used. And the existing Type 1 approach also needs to be improved. Therefore, under the condition of ensuring compatibility with the existing system, how to design improved uplink data transmission for a shorter TTI to achieve frequency domain diversity gain, thereby ensuring uplink data transmission performance, is a problem to be solved.

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 embodiments in the UE (User Equipment) of the present application can be applied to the base station, and vice versa. Further, the features of the embodiments and the embodiments of the present application may be combined with each other arbitrarily without conflict.

Summary of the invention

An intuitive approach to uplink data channel resource allocation in short TTIs is to reuse existing scheduling methods. However, the inventors found through research that the above intuitive method has an obvious problem, because the frequency hopping mapping cannot be performed, and thus the higher frequency domain diversity gain cannot be obtained.

The solution in the present invention fully considers the above problems.

The invention discloses a method for a UE with low delay, comprising the following steps:

- Step A. Receiving first signaling, the first signaling scheduling transmission of the first data;

Step B. According to the first signaling, the first data is transmitted in the first PRB set, and the first PRB set is any one of the K candidate PRB sets.

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively transmitted in N LTE slots. The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, and the Y is a resource block allocation and hopping resource allocation field in the LTE DCI format 0. The number of bits of field, which is the carrier scheduled for the first signaling. The means for indicating the first PRB set At least one of the combined bits indicates that the first PRB set is which of the candidate PRB sets in K. The first PRB set includes G PRB subsets, and the PRB subset includes at least one PRB, and the G PRB subsets include a total of M PRBs, and the PRBs in the PRB subset are continuous in the frequency domain. of. The M is a positive integer and the G is a positive integer.

The essence of the foregoing first PRB set is that a continuous VRB group of the original system is mapped to G discretely distributed PRB subsets in a frequency domain according to a given PRB interval, thereby implementing frequency domain diversity in uplink transmission. The gain, and the greatest degree of guarantee, results in a smaller collision with the existing PUSCH transmission. The given PRB interval is configurable or predetermined.

As an embodiment, the number of PRBs included in each PRB subset of the G PRB subsets is the same.

As an embodiment, at least two PRB subsets exist in the first PRB set, and the number of PRBs included in each of the two PRB subsets is different.

As an embodiment, the G is equal to two.

As an embodiment, for a given system bandwidth, the remainder of the M divided by Q is not 0, and the Q is the number of PRBs included in the RBG corresponding to the given system bandwidth.

As an embodiment, the first signaling is a DCI for Uplink Grant. As a sub-embodiment of the above embodiment, the first signaling is one of DCI formats {0, 4}.

As an embodiment, the transport block group includes a positive integer number of transport blocks, and the transport block is a MAC (Medium Access Control) PDU (Protocol Data Unit).

As an embodiment, the transport block group is composed of L transport blocks, and L is a positive integer.

As an embodiment, the N is 1.

As an embodiment, the scheduling information includes L modulation coding indexes, where the L modulation coding indexes are respectively used to indicate a modulation mode and a coding rate adopted by L transport blocks in the transport block group (ie, the N transport block groups share the same L MCSs). As a sub-embodiment of the foregoing embodiment, the modulation and coding index is an MCS (Modulation and Coding Scheme) in LTE.

Specifically, according to an aspect of the present invention, the K candidate PRB sets include at least a candidate PRB set one, the candidate set one includes G PRB subsets, and the start PRBs of the G subsets are spaced apart The PRB number is a predetermined positive integer Z.

The advantage of the foregoing candidate set 1 is that the resources of the M VRBs are mapped to the G PRB subsets by using a specific resource allocation manner under the condition that the resource block configuration bit number and the indication manner are used in the existing DCI. And the interval between the G PRB subsets is a predetermined positive integer Z to implement data transmission of the frequency domain diversity gain on the short TTI system.

Specifically, according to an aspect of the present invention, the K candidate PRB sets include at least one of the following:

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 0; the candidate PRB set 3 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 1.

Specifically, according to an aspect of the present invention, wherein the K is 2, and the K candidate PRB sets are the candidate PRB set one and the candidate PRB set two, the first signaling lacks Frequency hopping compared with the DCI in LTE. Flag field.

The advantages of the above aspects are reduced DCI load size, improved transmission efficiency or robustness.

Specifically, according to an aspect of the present invention, the step A further includes the following steps:

- Step A0. Receive high layer signaling to determine:

- first information: the number of subbands included in the system bandwidth of the first carrier;

- Second information: the number of PRB pairs used to transmit the PUCCH in the first carrier.

- Step A1. Based on the given information, the Z is determined. The given information includes first information and second information.

The first carrier is a carrier scheduled by the first signaling.

Specifically, according to an aspect of the present invention, the given information further includes at least the following One:

a third information: one or two bits of the bits used to indicate the first set of PRBs;

a fourth information: an LTE time slot in which the first data is transmitted is a sequence number in all LTE time slots in one LTE radio frame;

- fifth information: system bandwidth of the first carrier;

- sixth information: a physical cell identifier corresponding to the first carrier;

The invention discloses a method for a base station with low delay, comprising the following steps:

- Step A. Sending first signaling, the first signaling scheduling transmission of the first data;

Step B. Receive the first data in the first set of PRBs according to the first signaling. The first PRB set is any one of K candidate PRB sets.

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively transmitted in N LTE slots. The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, where Y is the number of bits of the resource block configuration and the frequency hopping resource allocation field in the LTE DCI format 0, where Y is Carriers scheduled for the first signaling. The at least one of the bits for indicating the first PRB set indicates that the first PRB set is which one of the candidate PRB sets in K. The first PRB set includes G PRB subsets, and the PRB subset includes at least one PRB, and the G PRB subsets include a total of M PRBs, and the PRBs in the PRB subset are continuous in the frequency domain. of. The M is a positive integer and the G is a positive integer.

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is scheduled based on the non-frequency hopping LTE PUSCH resource allocation mode 0. The set of PRBs; the candidate PRB set 3 is a set of PRBs scheduled based on the non-hopping LTE PUSCH resource allocation mode 1.

- Step A0. Send high layer signaling to determine:

The first carrier is a carrier scheduled by the first signaling.

Specifically, according to an aspect of the invention, the given information further includes at least one of the following:

- fifth information: system bandwidth of the first carrier;

- Sixth information: a physical cell identifier corresponding to the first carrier.

The present invention discloses a user equipment supporting low-latency wireless communication, which includes:

a first module: receiving first signaling, the first signaling scheduling transmission of the first data;

- a second module: transmitting the first data in the first set of PRBs according to the first signaling. The first PRB set is any one of K candidate PRB sets.

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively transmitted in N LTE slots. The first signaling is used to indicate that the number of bits of the first PRB set is smaller than Or equal to Y+2, where Y is the number of bits of the resource block configuration and the frequency hopping resource allocation field in LTE DCI format 0, and the Y is the carrier scheduled for the first signaling. The at least one of the bits for indicating the first PRB set indicates that the first PRB set is which one of the candidate PRB sets in K. The first PRB set includes G PRB subsets, and the PRB subset includes at least one PRB, and the G PRB subsets include a total of M PRBs, and the PRBs in the PRB subset are continuous in the frequency domain. of. The M is a positive integer and the G is a positive integer.

In addition, the first module is further configured to: receive high layer signaling to determine:

First information: the number of subbands included in the system bandwidth of the first carrier;

Second information: the number of PRB pairs used to transmit the PUCCH in the first carrier;

And: based on the given information, determine a positive integer Z. The given information includes first information and second information.

The given information also includes at least one of the following:

- fifth information: system bandwidth of the first carrier;

Specifically, according to an aspect of the present invention, the K candidate PRB sets include at least a candidate PRB set one, the candidate set one includes G PRB subsets, and the start PRBs of the G subsets are spaced apart The PRB number is the Z.

- candidate PRB set two;

- candidate PRB set three;

The present invention discloses a base station device supporting low-latency wireless communication, which includes:

a first module: transmitting first signaling, the first signaling scheduling transmission of the first data;

a second module: receiving the first data in the first set of PRBs according to the first signaling. The first PRB set is any one of K candidate PRB sets.

In addition, the first module is further configured to: send high layer signaling to determine:

Second information: the number of PRB pairs used to transmit the PUCCH in the first carrier.

The given information also includes at least one of the following:

- fifth information: system bandwidth of the first carrier;

- candidate PRB set two;

- candidate PRB set three;

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

- Designing independent uplink data transmission channels for short TTI scenarios to ensure independent uplink data transmission based on each short TTI;

- the resource allocation manner corresponding to the first PRB set, the frequency domain diversity gain may be obtained on one TTI;

The first PRB set shares the same PRB resource with the PUSCH of the existing system, which can improve the system spectrum utilization.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

1 shows a flow diagram of an embodiment including transmitting and receiving high layer signaling, and determining a Z step in accordance with the present invention;

2 illustrates a flow diagram of an embodiment including only transmitting and receiving first signaling, and receiving and transmitting first data based on first signaling, in accordance with the present invention;

FIG. 3 is a schematic diagram showing a resource allocation manner corresponding to a candidate PRB subset of a candidate PRB set one according to the present invention; FIG.

4 is a schematic diagram showing a first pattern of a resource allocation manner corresponding to a candidate PRB subset 2 of a candidate PRB set one according to the present invention;

5 is a schematic diagram showing a second pattern of a resource allocation manner corresponding to a candidate PRB subset 2 of a candidate PRB set one according to the present invention;

6 is a schematic diagram showing a resource allocation manner corresponding to a candidate PRB subset three of a candidate PRB set one according to the present invention;

FIG. 7 is a schematic diagram showing a resource allocation manner corresponding to a candidate PRB set two according to the present invention; FIG.

FIG. 8 is a schematic diagram showing a resource allocation manner corresponding to a candidate PRB set three according to the present invention; FIG.

FIG. 9 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention;

Figure 10 is a block diagram showing the structure of a processing device in a base station 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 exemplifies a flowchart including an embodiment of transmitting and receiving high layer signaling, and determining a Z step, as shown in FIG. In Figure 1, base station N1 is the maintenance base station of the serving cell of UE U2, and the step identified in block F1 is an optional step.

For the base station N1, the first signaling is transmitted in step S11.

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively transmitted in N LTE slots. The first signaling is used to indicate that the number of bits of the first PRB set is smaller than Or equal to Y+2, where Y is the number of bits of the resource block configuration and the frequency hopping resource allocation field in LTE DCI format 0, and the Y is the carrier scheduled for the first signaling. . The at least one of the bits for indicating the first PRB set indicates that the first PRB set is which one of the candidate PRB sets in K. The first PRB set includes G PRB subsets, and the PRB subset includes at least one PRB, and the G PRB subsets include a total of M PRBs, and the PRBs in the PRB subset are continuous in the frequency domain. of. The M is a positive integer and the G is a positive integer.

As an embodiment, the G is equal to two.

As an embodiment, the scheduling information includes L modulation coding indexes, where the L modulation coding indexes are respectively used to indicate a modulation mode and a coding rate adopted by the L transport blocks in the transport block group (ie, The N transport block groups share the same L MCSs). As a sub-embodiment of the foregoing embodiment, the modulation and coding index is an MCS (Modulation and Coding Scheme) in LTE.

As an embodiment, the number of bits used to indicate the first PRB set is Y+1, and the first signaling lacks a Frequency hopping flag field, and Y is equal to DCI in LTE.

among them

The number of RBs included in the first carrier. Of the Y+1 bits, 1 bit indicates that the first PRB set is a candidate PRB set one, or a candidate PRB set two,

Is the smallest integer not less than X. specific,

“0” indicates that the first PRB set is a candidate PRB set one;

“1” indicates that the first PRB set is a candidate PRB set two;

If the first PRB set is a candidate PRB set one, and

Then, among the Y+2 bits, 1 bit indicates which of the candidate PRB subsets of the candidate PRB set is the first PRB set.

Specifically, as a sub-example:

“0” indicates that the first PRB set is a candidate PRB subset one of the candidate PRB set one;

“1” indicates that the first PRB set is the candidate PRB subset 2 in the candidate PRB set one;

Specifically, as another sub-embodiment:

“1” indicates that the first PRB set is the candidate PRB subset three of the candidate PRB set one;

Specifically, as another sub-embodiment:

“0” indicates that the first PRB set is the candidate PRB subset 2 in the candidate PRB set one;

The remaining Y-1 bits indicate the location of the VRB where the first PRB set is located.

when

When the first PRB set is the candidate PRB set one, two of the Y+2 bits indicate which of the candidate PRB sets of the candidate PRB set is the first PRB set.

Specifically, as a sub-example:

“00” indicates that the first PRB set is a candidate PRB subset one of the candidate PRB set one, and

“01” indicates that the first PRB set is a candidate PRB subset one of the candidate PRB set one, and

“10” indicates that the first PRB set is the candidate PRB subset 2 in the candidate PRB set one;

“11” indicates that the first PRB set is the candidate PRB subset three in the candidate PRB set one;

Specifically, as a sub-example:

“01” indicates that the first PRB set is the candidate PRB subset three in the candidate PRB set one,

“10” indicates that the first PRB set is a candidate PRB subset one of the candidate PRB set one, and

“11” indicates that the first PRB set is the candidate PRB subset 2 in the candidate PRB set one;

among them

Is the largest integer not greater than X;

The remaining Y-2 bits indicate the location of the VRB where the first PRB set is located.

If the first PRB set is the candidate PRB set two, the Y bits indicate the location of the VRB in which the first PRB set is located.

Among the above

for

The number of RBs available for transmitting the first data after the number of RBs used for transmitting the uplink control channel is removed from the RBs, wherein the number of RB pairs used for uplink control channel transmission is

And indicated by the second information.

As an embodiment, the number of bits used to indicate the first PRB set is Y+2, and Y is equal to

among them

The number of RBs included in the first carrier. Of the Y+2 bits, 1 bit indicates that the first PRB set is a candidate PRB set one, or a candidate PRB set two.

specific,

“0” indicates that the first PRB set is a candidate PRB set one;

“1” indicates that the first PRB set is a candidate PRB set two;

If the first PRB set is a candidate PRB set one, and

Specifically, as a sub-example:

Specifically, as another sub-embodiment:

The remaining Y-1 bits indicate the location of the RB where the first PRB set is located.

when

Specifically, as a sub-example:

If the first PRB set is the candidate PRB set three, the Y+1 bits indicate the location of the PRB where the first PRB set is located.

Among the above

for

And indicated by the second information.

As another embodiment, the number of bits used to indicate the first set of PRBs is Y+2, and Y is equal to

among them

The number of RBs included in the first carrier. In the Y+2 bits, 1 bit indicates that the first PRB set is a candidate PRB set two, or a candidate PRB set three.

Specifically, as a sub-example:

“0” indicates that the first PRB set is the candidate PRB set two;

“1” indicates that the first PRB set is a candidate PRB set three;

When the first PRB set is the candidate PRB set two, there are Y bits indicating the VRB position occupied by the first PRB set; when the first PRB set is the candidate PRB set three, then Y+1 bits represent the first PRB The PRB position occupied by the collection.

For UE U2, the first signaling is received in step S21.

For base station N1, high layer signaling is sent in step S12 to determine:

As an embodiment, the high layer signaling is an n-SB and a pusch-HoppingOffset in a PUSCH-Config IE (Information Element) in the LTE system TS 36.331. Where n-SB represents the number of subbands included in the system bandwidth of the first carrier, and takes a positive integer greater than 0 and less than 5. pusch-HoppingOffset indicates the number of PRB pairs used to transmit PUCCH in the first carrier, defined

And the value is a positive integer greater than or equal to 0 and less than 99.

For UE U2, high layer signaling is received in step S22 to determine:

For the base station N1, it is in step S13. Determine Z based on the given information. The given information includes first information and second information. And the given information also includes at least one of the following:

- Third information: one or two bits used to indicate the bits of the first PRB set:

- Fourth information: LTE time slot in which the first data is transmitted. Sequence number in all LTE time slots in one LTE radio frame:

- Fifth information: System bandwidth of the first carrier:

The first carrier is a carrier scheduled by the first signaling. Here the system bandwidth of the first carrier is

Corresponding values, and

Step S11 has described the value of Z when the first PRB set is the candidate PRB set one.

The following is the value of Z when the first PRB set is the candidate PRB set 2.

As an embodiment,

Where i in f _hop (i) is the sequence number of all LTE time slots in an LTE radio frame in which the LTE time slot transmitting the first data is obtained, and the specific f _hop (i) is obtained by the section 5.4.3 of TS 36.211 The following formula is obtained.

Where c(k) is a pseudo-random number generated by the sixth information, and N _sb is the number of sub-bands included in the system bandwidth of the first carrier, that is, the number of sub-bands indicated by the first information.

and

The number of RBs included in the subband of the first carrier can be specifically obtained by the following formula in TS 36.211.

For UE U2, in step S23. Determine Z based on the given information. The given information includes first information and second information. And the given information also includes at least one of the following:

- fifth information: system bandwidth of the first carrier;

For UE U2, transmitting the first in the first PRB set according to the first signaling in step S24 data. The first PRB set is any one of K candidate PRB sets.

As an embodiment, K is equal to two.

As a sub-embodiment of this embodiment, the K candidate PRB sets are a candidate PRB set one and a candidate PRB set two. As a sub-embodiment of this embodiment, the K candidate PRB sets are a candidate PRB set one and a candidate PRB set three.

For the base station N1, the first data is received in the first set of PRBs according to the first signaling in step S14. The first PRB set is any one of K candidate PRB sets.

Example 2

Embodiment 2 exemplifies a flow chart that does not include transmitting and receiving high layer signaling, and does not include an embodiment of determining Z, as shown in FIG. In Fig. 2, the base station N3 is a maintenance base station of the serving cell of the UE U4.

For the base station N3, the first signaling is transmitted in step S31.

As an embodiment, the number of bits used to indicate the first PRB set is Y+1, and Y is equal to

among them

The number of RBs included in the first carrier. Of the Y+2 bits, 1 bit indicates which of the candidate PRB set 2 or the candidate PRB set 3 is the first PRB set.

specific,

“0” indicates that the first PRB set is the candidate PRB set two;

"1" indicates that the first PRB set is the candidate PRB set three.

For UE U4, the first signaling is received in step S41.

For UE U4, the first data is transmitted in the first set of PRBs according to the first signaling in step S42. The first PRB set is any one of K candidate PRB sets.

As an embodiment, K is equal to two.

As a sub-embodiment of this embodiment, the K candidate PRB sets are the candidate PRB set 2 and the candidate PRB set 3.

For the base station N3, the first data is received in the first set of PRBs according to the first signaling in step S32. The first PRB set is any one of K candidate PRB sets.

Example 3

Embodiment 3 is a schematic diagram showing a corresponding resource allocation manner of a candidate PRB subset of a candidate PRB set one according to the present invention, as shown in FIG. Assumption here

Then Y=11, and

There are 9 bits for indicating the location of the VRB where the first PRB set is located. Specifically, as shown in the figure, the starting position RB _start of a continuous VRB and its length L _{CRBs are} indicated by 9 bits, the specific RB _start =15, L _CRBs = 9, and the RIV corresponding to 9 bits. See section 8.1.1 of TS 36.213, here

And corresponding to this embodiment

FIG. 3( a ) is a schematic diagram of resource allocation of a VRB indicated by the RIV, and FIG. 3( b ) is a schematic diagram of allocation of a PRB resource corresponding to the VRB allocation. As can be seen from Figure 3, the original L _CRBs consecutive VRBs are divided into G = 2 PRB subsets, and the first PRB subset occupies RB _start to

PRB. The second PRB subset occupies

to

PRB. X1mod X2 represents the remainder of X1 divided by X2. Both X1 and X2 are positive integers.

Example 4

Embodiment 4 shows a schematic diagram of a first pattern of resource allocation manners of candidate PRB subsets 2 of a candidate PRB set one according to the present invention, as shown in the figure. Assumption here

Then Y=11, and

And there are 9 bits for indicating the location of the RB where the first PRB set is located. Specifically, as shown in the figure, the starting position RB _start of a continuous VRB and its length L _{CRBs are} indicated by 9 bits, the specific RB _start =15, L _CRBs = 9, and the RIV corresponding to 9 bits. See section 8.1.1 of TS 36.213, here

And corresponding to this embodiment

And f _m (i)=0 calculated according to the following formula in TS 36.213 section 5.3.4, that is, the resource mapping does not adopt the mirror mode, and the PRB numbers of each sub-band are arranged in ascending order as shown in FIG. 4 .

Where i is the sequence number of all LTE slots in an LTE radio frame for the LTE time slot in which the first data is transmitted. And c(i) is a pseudo random number generated by the sixth information.

4(a) is a schematic diagram of resource allocation of a VRB indicated by the RIV, and FIG. 4(b) is a schematic diagram of allocation of a PRB resource corresponding to the VRB allocation. As can be seen from Figure 4, the original L _CRBs consecutive VRBs are divided into G = 2 PRB subsets, and the first PRB subset occupies RB _start to

PRB. The second PRB subset occupies

to

PRB.

Example 5

Embodiment 5 is a schematic diagram showing a second pattern of a resource allocation manner corresponding to a candidate PRB subset 2 of a candidate PRB set one according to the present invention, as shown in FIG. 5. Assumption here

Then Y=11, and

And corresponding to this embodiment

And f _m (i)=1 calculated according to the following formula in TS 36.213 section 5.3.4, that is, the resource mapping adopts the mirror mode, and the PRB numbers of each sub-band are arranged in descending order as shown in FIG. 4 .

Figure (a) is a schematic diagram of resource allocation of a VRB indicated by the RIV, and Figure (b) is a schematic diagram of allocation of a PRB resource corresponding to the VRB allocation. As can be seen from Figure 5, the original L _CRBs consecutive VRBs are divided into G = 2 PRB subsets, and the first PRB subset occupies RB _start to

The second PRB subset occupies

to

Example 6

Embodiment 6 is a schematic diagram showing a resource allocation manner corresponding to a candidate PRB subset three of one candidate PRB set one according to the present invention, as shown in FIG. 6. Assumption here

Then Y=11, and

There are 9 bits for indicating the location of the RB where the first PRB set is located. Specifically, as shown in the figure, the starting position RB _start of a continuous VRB and its length L _{CRBs are} indicated by 9 bits, the specific RB _start =15, L _CRBs = 9, and the RIV corresponding to 9 bits. See section 8.1.1 of TS 36.213, here

Here, the number of subbands included in the system bandwidth indicated by the first information is N _sb = 4, and the embodiment corresponds to

As can be seen from Figure 6, the original L _CRBs consecutive VRBs are divided into G = N _sb = 4 PRB subsets, and

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

The PRB subset occupied by the fourth PRB is

to

further,

If G=N _sb =1, the candidate PRB subset 3 of the candidate PRB set one is the same as the candidate PRB set two resource allocation manner.

If G=N _sb =2, the candidate PRB subset 3 of the candidate PRB set one is allocated in the same manner as the candidate PRB subset one of the candidate PRB set one.

If G=N _sb =3, and when L _CRBs /G=0 or L _CRBs /G=1,

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

If G=N _sb =3, and when L _CRBs /G=2,

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

If G=N _sb =4, and when L _CRBs /G=0 or L _CRBs /G=1,

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

The PRB subset occupied by the fourth PRB is

to

If G=N _sb =4, and when L _CRBs /G=2,

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

The PRB subset occupied by the fourth PRB is

to

If G=N _sb =4, and when L _CRBs /G=3,

The PRB subset occupied by the first PRB subset is RB _start to

The PRB subset occupied by the second PRB is

to

The PRB subset occupied by the third PRB is

to

The PRB subset occupied by the fourth PRB is

to

Example 7

Embodiment 7 exemplifies a resource allocation manner of a candidate PRB set 2 according to the present invention, as shown in FIG. Assumption here

Then Y=11, and

There are 9 bits for indicating the location of the RB where the first PRB set is located. Specifically, as shown in the figure, the starting position RB _start of a continuous VRB and its length L _{CRBs are} indicated by 9 bits, the specific RB _start =15, L _CRBs = 9, and the RIV corresponding to 9 bits. (Resource Indication Value) can be found in section 8.1.1 of TS 36.213, here

Then, the PRB position where the first PRB set is located is the PRB position indicated by its RIV. That is, similar to the existing system based on the non-hopping LTE PUSCH resource allocation mode 0, the VRB location indicated by the RIV is the scheduled PRB location.

Example 8

Embodiment 8 exemplifies a resource allocation manner of a candidate PRB set three according to the present invention, as shown in FIG. That is, the set of PRBs scheduled based on the non-hopping LTE PUSCH resource allocation mode 1 is based on the PRB resource allocation manner in one slot. Assumption here

Then Y=11. And Y+1=12 bits are used to indicate the location of the RB where the first PRB set is located. Specifically, as shown in the figure, the value of the combinatorial index r generated by the starting position of the RBG corresponding to two consecutive RB sets is indicated by 12 bits. As shown in FIG. 8, the start RBG of the RB set 1 and the indexes s ₀ (RBG 1) and s ₁ -1 (RBG 3) of the end RBG, and the start RBG of the RB set 2 and the index s _{2 of the} end RBG ( RBG 8) and s ₃ -1 (RBG 9). The formula for r is

among them

Represents an extended binomial coefficient, which is equal to the number of combinations when A ≥ B

Where M=4, and

P is the number of RBs in each RBG. For the value, see Table 7.1.6.1-1 of TS 36.213. Here, the number of RBs included in the downlink system bandwidth is included.

Switch to the number of RBs included in the upstream system bandwidth

Just fine. For information on how to reverse s0, s1, s2, s3 by r, see Wikipedia's "Combinatorial number system".

Example 9

Embodiment 9 shows a structural block diagram of a processing device in a base station according to an embodiment of the present invention; as shown in FIG. In FIG. 9, the base station processing apparatus 200 is mainly composed of a first module 201, a second module 202, a third module 203, and a fourth module 204.

The first module 201 sends first signaling, and the first signaling schedules transmission of the first data.

The second module 202 receives the first data in the first set of PRBs according to the first signaling. The first PRB set is any one of K candidate PRB sets.

In addition, the first module 201 is further configured to: send high layer signaling to determine:

The given information also includes at least one of the following:

Third information: one or two bits used to indicate a bit of the first PRB set;

Fourth information: an LTE time slot in which the first data is transmitted is a sequence number in all LTE time slots in one LTE radio frame;

Fifth information: system bandwidth of the first carrier;

Sixth information: a physical cell identifier corresponding to the first carrier.

Example 10

Embodiment 10 shows a structural block diagram of a processing device in a base station according to an embodiment of the present invention; as shown in FIG. In FIG. 10, the UE processing apparatus 300 is mainly composed of a first module 301, a second module 302, a third module 303, and a fourth module 304.

The first module 301 receives the first signaling, and the first signaling schedules transmission of the first data.

The second module 302 sends the first data in the first PRB set according to the first signaling. The first PRB set is any one of K candidate PRB sets.

In addition, the first module 301 is further configured to: receive high layer signaling to determine:

The given information also includes at least one of the following:

Third information: one or two bits used to indicate a bit of the first PRB set;

Fifth information: system bandwidth of the first carrier;

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 in the present invention includes, but is not limited to, a wireless communication device such as a mobile phone, a tablet computer, a notebook, a network card, and an in-vehicle communication device. 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 for UE in low latency includes the following steps:

- Step A. Receiving first signaling, the first signaling scheduling transmission of the first data;

- step B. transmitting first data in the first PRB set according to the first signaling; the first PRB set is any one of K candidate PRB sets;

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data; the first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively Transmission in N LTE time slots;

The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, where Y is a carrier scheduled for the first signaling, and is used for the resource block according to the scheme of the LTE DCI format 0. And the number of bits allocated for the frequency hopping allocation; the at least one of the bits used to indicate the first PRB set indicates that the first PRB set is the PRB set of the candidate PRB sets in the K; the first PRB set includes G PRB subsets, one of the PRB subsets includes at least one PRB, the G PRB subsets comprise a total of M PRBs, the PRBs in the PRB subset are continuous in the frequency domain, and the M is positive An integer, the G being a positive integer.
The method according to claim 1, wherein the K candidate PRB sets at least include a candidate PRB set one, the candidate set one includes G PRB subsets, and PRBs between the starting PRBs of the G subsets The number is a predetermined positive integer Z.
The method according to claim 1 or 2, wherein said K candidate PRB sets comprise at least one of:

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 0; the candidate PRB set 3 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 1.
The method according to claim 1, 2 or 3, wherein the K is 2, and when the K candidate PUB sets are the candidate PRB set one and the candidate PRB set two, compared with the DCI in the LTE, A signaling lacks the Frequency hopping flag field.
The method according to claim 2 or 3, wherein said step A further comprises the steps of:

- Step A0. Receive high layer signaling to determine:

- first information: the number of subbands included in the system bandwidth of the first carrier;

- second information: the number of PRB pairs used to transmit the PUCCH in the first carrier;

- step A1. determining the Z according to the given information; the given information comprises the first information and the second information;

The first carrier is a carrier scheduled by the first signaling.
The method of claim 5 wherein said given information further comprises at least one of:

a third information: one or two bits of the bits used to indicate the first set of PRBs;

a fourth information: an LTE time slot in which the first data is transmitted is a sequence number in all LTE time slots in one LTE radio frame;

- fifth information: system bandwidth of the first carrier;

- Sixth information: a physical cell identifier corresponding to the first carrier.
A method for a low latency base station includes the following steps:

- Step A. Sending first signaling, the first signaling scheduling transmission of the first data;

- step B. receiving first data in the first PRB set according to the first signaling; the first PRB set is any one of K candidate PRB sets;

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data; the first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively Transmission in N LTE time slots;

The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, where Y is a carrier scheduled for the first signaling, and is used for the resource block according to the scheme of the LTE DCI format 0. The number of bits allocated for configuration and frequency hopping. The at least one of the bits for indicating the first PRB set indicates that the first PRB set is the PRB set of the candidate PRB sets in the K; the first PRB set includes the G PRB subsets, one of the The PRB subset includes at least one PRB, The G PRB subsets comprise a total of M PRBs, the PRBs in the PRB subset are consecutive in the frequency domain, the M is a positive integer, and the G is a positive integer.
The method according to claim 7, wherein the K candidate PRB sets at least include a candidate PRB set one, the candidate set one includes G PRB subsets, and PRBs between the starting PRBs of the G subsets The number is a predetermined positive integer Z.
The method of claim 7, wherein the K candidate PRB sets comprise at least one of:

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 0; the candidate PRB set 3 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 1.
The method according to claim 7, 8 or 9, wherein the K is 2, and when the K candidate PRB sets are the candidate PRB set one and the candidate PRB set two, the first signaling is compared with the DCI in the LTE. The Frequency hopping flag field is missing.
The method of claim 8 or 9, wherein said step A further comprises the steps of:

- Step A0. Send high layer signaling to determine:

- first information: the number of subbands included in the system bandwidth of the first carrier;

- second information: the number of PRB pairs used to transmit the PUCCH in the first carrier;

- Step A1. Based on the given information, the Z is determined. The given information includes first information and second information;

The first carrier is a carrier scheduled by the first signaling.
The method of claim 11 wherein said given information further comprises at least one of:

a third information: one or two bits of the bits used to indicate the first set of PRBs;

- Fourth information: LTE time slot for transmitting the first data in all LTE in one LTE radio frame The serial number in the gap;

- fifth information: system bandwidth of the first carrier;

- Sixth information: a physical cell identifier corresponding to the first carrier.
A user equipment supporting low-latency wireless communication, comprising:

a first module, receiving first signaling, the first signaling scheduling transmission of the first data;

a second module, according to the first signaling, transmitting the first data in the first PRB set; the first PRB set is any one of the K candidate PRB sets;

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data; the first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively Transmission in N LTE time slots;

The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, where Y is a carrier scheduled for the first signaling, and is used for the resource block according to the scheme of the LTE DCI format 0. And the number of bits allocated for the frequency hopping allocation; the at least one of the bits used to indicate the first PRB set indicates that the first PRB set is the PRB set of the candidate PRB sets in the K; the first PRB set includes G PRB subsets, one of the PRB subsets includes at least one PRB, the G PRB subsets comprise a total of M PRBs, the PRBs in the PRB subset are continuous in the frequency domain, and the M is positive An integer, the G being a positive integer.

In addition, the first module is further configured to: receive high layer signaling to determine:

First information: the number of subbands included in the system bandwidth of the first carrier;

Second information: the number of PRB pairs used to transmit the PUCCH in the first carrier;

And: determining a positive integer Z according to the given information; the given information includes the first information and the second information.

The given information also includes at least one of the following:

a third information: one or two bits of the bits used to indicate the first set of PRBs;

a fourth information: an LTE time slot in which the first data is transmitted is a sequence number in all LTE time slots in one LTE radio frame;

- fifth information: system bandwidth of the first carrier;

- Sixth information: a physical cell identifier corresponding to the first carrier.
The device according to claim 13, wherein the K is 2, and when the K candidate PRB sets are the candidate PRB set one and the candidate PRB set two, the first signaling lacks a Frequency hopping flag compared to the DCI in the LTE. area.
The apparatus according to claim 13, wherein the K candidate PRB sets at least include a candidate PRB set one, the candidate set one includes G PRB subsets, and PRBs between the starting PRBs of the G subsets The number is the Z.
The apparatus of claim 13, wherein the K candidate PRB sets comprise at least one of:

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 0; the candidate PRB set 3 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 1.
A base station device used for low latency, comprising:

a first module, transmitting first signaling, the first signaling scheduling transmission of the first data;

a second module, according to the first signaling, receiving the first data in the first PRB set; the first PRB set is any one of the K candidate PRB sets;

The first signaling is physical layer signaling, and the first signaling includes scheduling information of the first data; the first data includes N transport block groups, the N is a positive integer, and the N transport block groups are respectively Transmission in N LTE time slots;

The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, where Y is a carrier scheduled for the first signaling, and is used for the resource block according to the scheme of the LTE DCI format 0. The number of bits allocated and frequency hopping allocated; the at least one of the bits used to indicate the first PRB set indicates which of the candidate PRB sets in the first PRB set is the set of PRBs in the K. The first PRB set includes G PRB subsets, and the one PRB subset includes at least one PRB, The G PRB subsets comprise a total of M PRBs, the PRBs in the PRB subset are consecutive in the frequency domain, the M is a positive integer, and the G is a positive integer.

In addition, the first module is further configured to: send high layer signaling:

First information: the number of subbands included in the system bandwidth of the first carrier;

Second information: the number of PRB pairs used to transmit the PUCCH in the first carrier;

And: determining a positive integer Z according to the given information; the given information includes the first information and the second information.

The given information also includes at least one of the following:

a third information: one or two bits of the bits used to indicate the first set of PRBs;

a fourth information: an LTE time slot in which the first data is transmitted is a sequence number in all LTE time slots in one LTE radio frame;

- fifth information: system bandwidth of the first carrier;

- Sixth information: a physical cell identifier corresponding to the first carrier.
The device according to claim 17, wherein the K is 2, and when the K candidate PRB sets are the candidate PRB set one and the candidate PRB set two, the first signaling lacks a Frequency hopping flag compared to the DCI in the LTE. area.
The apparatus according to claim 17, wherein the K candidate PRB sets at least include a candidate PRB set one, the candidate set one includes G PRB subsets, and PRBs between the starting PRBs of the G subsets The number is the Z.
The apparatus of claim 17, wherein the K candidate PRB sets comprise at least one of:

- candidate PRB set two;

- candidate PRB set three;

The candidate PRB set 2 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 0; the candidate PRB set 3 is a set of PRBs scheduled according to the non-hopping LTE PUSCH resource allocation mode 1.