CN110753395A

CN110753395A - Channel resource allocation method and device

Info

Publication number: CN110753395A
Application number: CN201810812635.XA
Authority: CN
Inventors: 王梦茹; 黄伟
Original assignee: Chengdu Dingqiao Communication Technology Co Ltd
Current assignee: Chengdu Dingqiao Communication Technology Co Ltd
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2020-02-04
Anticipated expiration: 2038-07-23
Also published as: CN110753395B

Abstract

The application provides a channel resource allocation method and a device, and the method comprises the following steps: determining a resource allocation position adjustment value delta UlBand _ Blanked according to the configured actual required bandwidth and the standard bandwidth which is closest to the actual required bandwidth and is greater than the actual required bandwidth; respectively shifting delta UlBand _ Blanked/2 resource blocks RB from the two ends of the frequency band to the middle, and starting to allocate resources for a physical uplink control channel PUCCH. The method can realize reasonable utilization of frequency spectrum resources.

Description

Channel resource allocation method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating channel resources.

Background

The standard bandwidth specified by the existing protocol is only 20M, 15M, 10M, 5M, 3M, and 1.4M, but in an actual application scenario, the spectrum resource is limited, so that the required standard bandwidth cannot be achieved, and the waste of the spectrum resource is caused.

Disclosure of Invention

In view of this, the present application provides a channel resource allocation method and apparatus, which can implement reasonable utilization of spectrum resources.

In order to solve the technical problem, the technical scheme of the application is realized as follows:

a method of channel resource allocation, the method comprising:

determining a resource allocation position adjustment value delta UlBand _ Blanked according to the configured actual required bandwidth and the standard bandwidth which is closest to the actual required bandwidth and is greater than the actual required bandwidth;

respectively shifting delta UlBand _ Blanked/2 resource blocks RB from the two ends of the frequency band to the middle, and starting to allocate resources for a physical uplink control channel PUCCH.

An apparatus for channel resource allocation, the apparatus comprising: a determination unit and an allocation unit;

the determining unit is configured to determine a resource allocation position adjustment value Δ UlBand _ Blanked according to the configured actual required bandwidth and a standard bandwidth which is closest to the actual required bandwidth and is greater than the actual required bandwidth;

and the allocation unit is used for shifting the delta UlBand _ Blanked/2 resource blocks RB determined by the determination unit from the two ends of the frequency band to the middle respectively and starting to allocate resources for the physical uplink control channel PUCCH.

According to the technical scheme, the adjustment value of the resource allocation position is determined by introducing the actual required bandwidth, and then the resource position corresponding to the adjustment value is used for starting to allocate the resource for the PUCCH. The scheme can flexibly configure the bandwidth according to the frequency spectrum resources, and achieves reasonable utilization of the frequency spectrum resources.

Drawings

Fig. 1 is a schematic diagram of a channel resource allocation process in an embodiment of the present application;

fig. 2 is a schematic diagram of a mapping manner of modulation symbols on a physical uplink control channel;

fig. 3 is a schematic diagram of PUCCH and PRACH resource allocation in the embodiment of the present application;

fig. 4 is a schematic structural diagram of an apparatus applied to the above-described technology in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings and examples.

The embodiment of the application provides a channel resource allocation method, which determines a resource allocation position adjustment value by introducing an actual required bandwidth, and then starts to allocate resources for a PUCCH by using a resource position corresponding to the adjustment value. The scheme can flexibly configure the bandwidth according to the frequency spectrum resources, and achieves reasonable utilization of the frequency spectrum resources.

The following describes in detail a process for allocating channel resources in an embodiment of the present application with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a channel resource allocation process in an embodiment of the present application. The method comprises the following specific steps:

step 101, the base station determines a resource allocation position adjustment value according to the configured actual required bandwidth and a standard bandwidth which is closest to the actual required bandwidth and is greater than the actual required bandwidth.

In this step, the resource allocation position adjustment value Δ UlBand _ Blanked is determined as:

ΔUlBand_Blanked＝N_normal/180KHz-N/180KHz；

wherein N _ normal is the standard bandwidth; and N is the actual required bandwidth.

In the embodiment of the application, the actual required bandwidth is configured by a high layer and does not contain the protection bandwidth; the corresponding upward-directed closest standard bandwidth is also free of guard bandwidth.

Assuming that the actual required bandwidth of the configuration is 12M, the corresponding standard bandwidth is 15M.

The time for allocating resources to the PUCCH is the same as that of the existing implementation, and after the MAC layer receives the actual required bandwidth transmitted by the higher layer, the MAC layer determines the starting position for allocating resources to the PUCCH, and only introduces Δ UlBand _ blank when determining the starting position, which is different from that of the existing implementation.

And 102, the base station respectively shifts half RBs of the resource allocation position adjustment value from the two ends of the frequency band to the middle and starts to allocate resources for the PUCCH.

And shifting one half RB of the resource allocation position adjustment value, namely shifting delta UlBand _ Blanked/2 RB.

In a specific implementation, Δ UlBand _ Blanked is used to format 1,1a and 1b, and m in format 2,2a and 2b to achieve the effect of starting to allocate PUCCH resources after respectively shifting Δ UlBand _ Blanked/2 RBs from two ends of a frequency band to the middle, and a process of specifically adjusting m is as follows:

for formats 1,1a and 1b, the PUCCH is mapped to the physical resource block as:

for formats 2,2a and 2 b:

referring to fig. 2, fig. 2 is a schematic diagram of a mapping manner of modulation symbols on a physical uplink control channel. The corresponding relation between each RB and m is given in fig. 1, which pair of m corresponds to the number of RBs, wherein 1 RB corresponds to two m.

By determining the m mode in the embodiment of the application and searching the mapping table in fig. 2 through the determined m, it can be known how many RBs are offset and then resources are allocated to the PUCCH.

Respectively translating delta UlBand _ Blanked/2 RBs from two ends of the frequency band to the middle as forbidden RBs; i.e. these forbidden RBs are not allocated to PUCCH, to PRACH, or to PUSCH.

The base station allocates resources for the PRACH in the RBs allocated to the PUCCH and the RBs other than the forbidden RBs.

The specific procedure for allocating PRACH is the same as in the prior art implementation, except that the forbidden RB is not allocated to PRACH.

The base station allocates resources for the PUSCH in the RBs allocated to the PUCCH, the RBs allocated to the PRACH, and the RBs other than the forbidden RBs.

Under the uplink compressed bandwidth, the base station takes a part of RBs as forbidden RBs, so that the number of available RBs of the PUSCH is reduced, but the resource allocation mode of the PUSCH is unchanged.

That is, the RBs disabled in the embodiment of the present application may not be used by the PUCCH, the PRACH, and the PUSCH, and the disabled RBs may not be scheduled when each channel resource is allocated.

The following describes the channel resource allocation procedure in the LTE system in detail with reference to the example.

Assuming that the frequency band occupies 100 RBs, numbered 0-99, and the actual required bandwidth is 90 RBs, the value of Δ UlBand _ Blanked/2 is 5, and the PUCCH starts allocation from RB No. 5 (i.e., RB No. 6) increment and RB No. 94 (RB No. 6 last) decrement.

RB No. 0 to 4, and RB No. 95 to 99 as forbidden RB;

and after deducting the forbidden RB resources, continuously allocating the required maximum RB resources for the PUCCH from the two ends in the residual allocable resources, and allocating the resources for the PRACH in the residual RB resources.

Referring to fig. 3, fig. 3 is a schematic diagram of PUCCH and PRACH resource allocation in the embodiment of the present application. In FIG. 3, RB resources No. 0-4 and No. 95-99 are forbidden RB (blanked PUCCH); if the maximum RB resource required by the PUCCH is 4, allocating No. 5-6 and No. 93-94 RB resources to the PUCCH; no. 7-12 RB resources are allocated to PARCH.

In this embodiment, an example of allocating resources is given, in actual allocation, RBs are only disabled and are not allocated, and other specific allocation manners are not limited.

Based on the same inventive concept, the application also provides a channel resource allocation device. Referring to fig. 4, fig. 4 is a schematic structural diagram of an apparatus applied to the above technology in the embodiment of the present application. The device includes: a determination unit 401 and an allocation unit 402;

a determining unit 401, configured to determine a resource allocation position adjustment value Δ UlBand _ Blanked according to the configured actual required bandwidth and a standard bandwidth that is closest to the actual required bandwidth and is greater than the actual required bandwidth;

an allocating unit 402, configured to shift Δ UlBand _ Blanked/2 resource blocks RB determined by the determining unit 401 from both ends of the frequency band to the middle, and start allocating resources for the physical uplink control channel PUCCH.

Preferably, the first and second liquid crystal films are made of a polymer,

ΔUlBand_Blanked＝N_normal/180KHz-N/180KHz；

Preferably, the first and second liquid crystal films are made of a polymer,

an allocating unit 402, configured to allocate resources for a physical random access channel PRACH in an RB allocated to the PUCCH and an RB other than the forbidden RB; wherein, the forbidden RB is delta UlBand _ Blanked/2 RBs respectively shifted from two ends of the frequency band to the middle.

Preferably, the first and second liquid crystal films are made of a polymer,

an allocating unit 402, further configured to allocate resources for a physical uplink shared channel PUSCH in the RBs allocated to the PUCCH, the RBs allocated to the PRACH, and the RBs other than the forbidden RB.

The units of the above embodiments may be integrated into one body, or may be separately deployed; may be combined into one unit or further divided into a plurality of sub-units.

In summary, the present application determines the resource allocation position adjustment value by introducing the actual required bandwidth, and then starts to allocate resources for the PUCCH using the resource position corresponding to the adjustment value. The scheme can flexibly configure the bandwidth according to the frequency spectrum resources, and achieves reasonable utilization of the frequency spectrum resources.

And meanwhile, a resource allocation mode of the PRACH and the PUSCH is also provided, and the resource allocation can be flexibly and reasonably carried out according to the size of the actual required bandwidth.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A method for allocating channel resources, the method comprising:

2. The method of claim 1,

ΔUlBand_Blanked＝N_normal/180KHz-N/180KHz；

3. The method according to claim 1 or 2, characterized in that the method further comprises:

allocating resources for a Physical Random Access Channel (PRACH) in RBs allocated to the PUCCH and RBs other than the forbidden RBs; wherein, the forbidden RB is delta UlBand _ Blanked/2 RBs respectively shifted from two ends of the frequency band to the middle.

4. The method of claim 3, further comprising:

and allocating resources for the PUSCH in the RBs allocated to the PUCCH, the RBs allocated to the PRACH and the RBs except the forbidden RBs.

5. An apparatus for allocating channel resources, the apparatus comprising: a determination unit and an allocation unit;

6. The apparatus of claim 1,

ΔUlBand_Blanked＝N_normal/180KHz-N/180KHz；

7. The apparatus of claim 5 or 6,

the allocation unit is further configured to allocate resources to a physical random access channel PRACH in an RB allocated to the PUCCH and an RB other than the forbidden RB; wherein, the forbidden RB is delta UlBand _ Blanked/2 RBs respectively shifted from two ends of the frequency band to the middle.

8. The apparatus of claim 7,

the allocating unit is further configured to allocate resources to a physical uplink shared channel PUSCH in an RB allocated to a PUCCH, an RB allocated to a PRACH, and an RB other than a forbidden RB.