WO2017143784A1

WO2017143784A1 - Rru macro sector resource allocation method and device

Info

Publication number: WO2017143784A1
Application number: PCT/CN2016/101776
Authority: WO
Inventors: 詹建明; 包晓瑜; 孙国平; 刘涛; 梁昌裕; 张增杰; 王正辛; 霍燚; 余擎旗; 苑伟涛; 蒲迎春
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-02-26
Filing date: 2016-10-11
Publication date: 2017-08-31
Also published as: CN107135520A

Abstract

Provided in the present invention is an RRU macro-sector resource allocation method which solves the problem wherein baseband resources and power resources are wasted when multiple RRU sectors merge, comprising: when a terminal moves from a first RRU macro sector to a second RRU macro sector, determining the maximum uplink and downlink imbalance degree between the first RRU macro sector and the second RRU macro sector; detecting actual uplink signal quality parameter values of the first RRU macro sector and the second RRU macro sector; when the difference between the actual uplink signal quality parameter values of the first RRU macro sector and the second RRU macro sector is no greater than the uplink and downlink maximum imbalance degree and is greater than a preset value, a baseband module of the first RRU macro sector allocates a downlink encoding resource for the terminal, but does not process uplink physical channel data of the terminal, and a radio module of the first RRU macro sector allocates a downlink power resource for the terminal; a baseband module of the second RRU macro sector allocates a uplink service channel decoding resource for the terminal, but does not process downlink physical channel data for the terminal. The present scheme improves the utilization rate of the baseband resources and downlink power resources.

Description

RRU macro sector resource allocation method and device

The present application is filed on the basis of the Chinese Patent Application No. WO 201610109299.3, filed on Feb. 26, 2016, the disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for resource allocation among RRU macro sectors.

Background technique

In an actual WCDMA (Wideband Code Division Multiple Access) commercial network, a network deployment scheme in which multiple RF module sector cells are combined may be used, and multiple macro RRUs (Radio Remote Units) The unit) sector is scrambled with the same downlink scrambling code. Referring to FIG. 1, this can reduce the handover between cells or reduce the workload of scrambling resource planning, and save the baseband board configuration, such as indoor coverage, highway or railway.

After a plurality of macro RRU cells are combined into one logical cell, in order to enhance the uplink and downlink capacity of the logical cell, a sectorized scheduling scheme is adopted in the same logical cell, and the same is adopted for multiple sectors merged into the same cell. The downlink scrambling code is scrambled, and the UE cannot distinguish different sector signals. In this case, the sector-scheduled scheduling scheme generally uses the strength of the uplink signal to determine and decide the baseband resources and power resource scheduling of different sectors. If the uplink load of two adjacent RRU sectors in the same logical cell is basically balanced, the strength of the above-mentioned signal to determine the uplink and downlink resource allocation does not have any problem. However, if the uplink load of two adjacent RRU sectors in the same logical cell has a large difference, that is, the uplink signal coverage boundary and the downlink signal coverage boundary have a large difference, or the strength of the uplink signal is used to determine the uplink and downlink resource allocation. There will be resource allocation issues. In this way, the downlink power is limited, or the downlink performance of the user is degraded, so that the downlink power utilization efficiency is low, refer to FIG. 2 .

Summary of the invention

The present invention provides a method and a device for allocating resources between RRU macro sectors, which are used to solve the problem that the base station baseband resources of the user base station and the base station power resources are wasted due to the imbalance of the uplink signal coverage and the downlink signal coverage in the current multiple RRU sector combination scenarios. problem.

According to an aspect of the present invention, a method for resource allocation between RRU macro sectors is provided, including: when a terminal Determining an uplink/downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector when the first radio remote unit RRU macro sector moves to the second RRU macro sector; detecting the first RRU The actual row signal quality parameter value of the macro sector and the second RRU macro sector; the difference between the actual row signal quality parameter value of the first RRU macro sector and the actual row signal quality parameter value of the second RRU macro sector If the value is not greater than the maximum unbalance of the uplink and downlink and is greater than the preset value, the baseband module of the first RRU macro sector allocates a downlink traffic channel coding resource for the terminal, and does not allocate an uplink traffic channel decoding resource, and the first RRU macro The radio frequency module of the sector continues to allocate downlink power resources to the terminal; the baseband module of the second RRU macro sector allocates uplink traffic channel decoding resources for the terminal, and does not process downlink physical channel data for the terminal; wherein, the first RRU macro sector and the first The two macro RRU sectors are transmitted using the same downlink scrambling code.

The actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector is detected, including: an uplink signal interference ratio SIR of the baseband module detecting terminal of the first RRU macro sector, and a second RRU macro fan The baseband module of the zone detects the uplink signal to interference ratio SIR of the terminal.

The determining the maximum uplink and downlink unbalance between the first RRU macro sector and the second RRU macro sector includes: increasing the noise of the detected first RRU macro sector and the second RRU macro sector The quantity RoT performs a difference operation, and the difference obtained is taken as the maximum difference value.

The determining the uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector includes: detecting that the load of the first RRU macro sector is La, and the second RRU macro sector The load is Lb, and the uplink and downlink maximum imbalance DU is calculated according to the following formula: DU=1/(1-La)-1/(1-Lb).

Wherein, the preset value is any value greater than 0 dB and not greater than 6 dB.

According to another aspect of the present invention, an RRU macro inter-sector resource allocation apparatus is provided, including: a determining module, configured to: when a terminal moves from a first radio remote unit RRU macro sector to a second RRU macro sector, Determining an uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector; and a detecting module, configured to detect actual line signal quality of the first RRU macro sector and the second RRU macro sector a parameter value; an allocation module, configured to: the difference between the actual row signal quality parameter value of the first RRU macro sector and the actual row signal quality parameter value of the second RRU macro sector is not greater than the maximum uplink and downlink imbalance If the degree is greater than the preset value, the baseband module of the first RRU macro sector allocates the downlink traffic channel coding resource for the terminal, and does not allocate the uplink traffic channel decoding resource, and the radio module of the first RRU macro sector continues to allocate the downlink for the terminal. a power resource; a baseband module of the second RRU macro sector allocates an uplink traffic channel decoding resource for the terminal, and does not process downlink physical channel data for the terminal; wherein the first RRU macro sector and the second macro RRU sector are used Transmitting the same downlink scrambling code.

The foregoing detecting module includes: an uplink signal interference ratio SIR of the baseband module detecting terminal of the first RRU macro sector, and an uplink signal interference ratio SIR of the baseband module detecting terminal of the second RRU macro sector.

The determining module is specifically configured to perform a difference operation on the detected noise increment RoT of the first RRU macro sector and the second RRU macro sector, and obtain the difference as the maximum difference value.

The determining module is specifically configured to: detect that the load of the first RRU macro sector is La, the load of the second RRU macro sector is Lb, and the maximum unbalance degree DU of the uplink and downlink is calculated according to the following formula: DU =1/(1-La)-1/(1-Lb).

The beneficial effects of the present invention are as follows:

Compared with the prior art, the method provided in this embodiment achieves the improvement of the efficient use of resources, improves the overall performance effect of the logical cell, saves the uplink and downlink baseband processing resources and downlink baseband processing resources, and improves the baseband resources and downlink. Utilization efficiency of power resources.

DRAWINGS

1 is a schematic diagram of combining RRU macro sector 1 and RRU macro sector 2 into one logical cell in the prior art;

2 is a resource allocation diagram of a user in an uplink and downlink coverage imbalance area in the prior art;

3 is a flowchart of a method for allocating resources between RRU macro sectors provided in Embodiment 1 of the present invention;

4 is a schematic diagram of resource allocation for users in an uplink and downlink coverage unbalanced area in the same logical cell according to Embodiment 2 of the present invention;

Figure 5 is a block diagram showing the structure of an RRU macro-inter-sector resource allocation apparatus in Embodiment 3 of the present invention.

detailed description

In order to solve the problem that the current base station baseband resources and the base station power resources are wasted due to the unbalanced uplink signal coverage and downlink signal coverage imbalance in the prior art, the present invention provides an RRU macro-spatial resource. The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

In this embodiment, an RRU macro-spatial resource allocation method is provided. The method may be performed by a baseband subsystem. In this embodiment, multiple RRU macro sectors are combined into one logical cell, and the logical cell has a baseband. The system and the radio frequency subsystem, in this embodiment, assume that two RRU macro sector cells are combined into one logical cell, and the baseband subsystem includes a baseband module of macro sector 1 and a baseband module of macro sector 2, and the radio frequency subsystem includes a macro fan. RF module of zone 1 and RF module of macro sector 2. The baseband module and the radio frequency module of macro sector 1 and macro sector 2 under the logical cell are used. The same downlink scrambling code is transmitted.

FIG. 3 is a flowchart of a method for allocating resources between RRU macro sectors in Embodiment 1 of the present invention. As shown in FIG. 3, the method includes the following steps:

Step 301: When the terminal moves from the first RRU macro sector to the second RRU macro sector, determine an uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector uplink. degree;

Wherein the uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector uplink may be between the first RRU macro sector and the second RRU macro sector uplink The biggest difference is reflected. Based on this, the maximum difference value of the signal quality between the first RRU macro sector and the second RRU macro sector uplink may be implemented in any of two ways:

Determining a maximum difference value of a signal quality between the first RRU macro sector and the second RRU macro sector uplink, which may include: detecting noise of the detected first RRU macro sector and the second RRU macro sector The incremental RoT performs the difference operation, and the difference obtained is taken as the maximum difference value.

Or determining the maximum difference value of the signal quality between the first RRU macro sector and the second RRU macro sector uplink may specifically include:

The detected load of the first RRU macro sector is La, and the load of the second RRU macro sector is Lb, wherein the maximum imbalance DU is calculated according to the following formula:

DU=1/(1-La)-1/(1-Lb).

Step 302: Detect a real row signal quality parameter value of the first RRU macro sector and the second RRU macro sector;

In this step 302, the actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector is detected, which may specifically include:

The baseband module of the first RRU macro sector detects the uplink signal to interference ratio SIR of the terminal, and the baseband module of the second RRU macro sector detects the uplink SIR of the terminal.

Step 303: The difference between the actual row signal quality parameter value of the first RRU macro sector and the actual row signal quality parameter value of the second RRU macro sector is not greater than the maximum imbalance and greater than the preset value. The baseband module of the first RRU macro sector allocates downlink traffic channel coding resources for the terminal, and does not allocate uplink traffic channel decoding resources, and the radio module of the first RRU macro sector continues to allocate downlink power resources for the terminal; the second RRU macro fan The baseband module of the zone allocates uplink traffic channel decoding resources for the terminal, and does not process the downlink physical channel data for the terminal.

The preset value involved in the step 103 is any value greater than 0 dB and not greater than 6 dB.

In this embodiment, the user with the uplink signal coverage and the downlink signal coverage imbalance in the macro RRU merged cell is finely distributed on the base station side to improve the utilization efficiency of the baseband resource and the power resource.

Example 2

The present embodiment further clarifies the resource allocation manner provided by the present invention on the basis of the foregoing embodiment 1. In this embodiment, in the initial situation, the user establishes a wireless connection with the RRU macro sector 1 of the logical cell, where the baseband The baseband module of sector 1 in the system and the radio frequency module of sector 1 in the radio frequency subsystem allocate corresponding baseband resources and power resources to the user, and the baseband module and radio frequency subsystem of macro sector 2 in the baseband subsystem The radio module of macro sector 2 does not allocate corresponding baseband resources and power resources to the user.

The specific process of the resource allocation method in this embodiment is described in detail below:

In the first step, when the UE user moves from the macro sector 1 to the macro sector 2, the baseband module of the macro sector 1 measures the uplink signal quality SIR of the user as SIR_1, and the baseband module of the macro sector 2 measures the user. The uplink signal quality SIR is SIR_2. The baseband subsystem monitors RoT (Rise over Thermal noise) or uplink load L of two macro sectors, and RoT of macro sector 1 and macro sector 2 are recorded as RoT1 and RoT2, respectively. The uplink load L of the two sectors of macro sector 1 and macro sector 2 is denoted as La and Lb, respectively, and the baseband subsystem estimates the current macro sector 1 and macro sector by periodically detecting the noise increment RoT of the adjacent sector. 2 uplink and downlink maximum imbalance DU, DU = F (RoT1, RoT2), for example, DU = RoT1 - RoT2; or the baseband subsystem estimates the current macro sector 1 by periodically detecting the uplink load L of the adjacent sector Up to downlink maximum imbalance DU=F(La, Lb) with macro sector 2, for example, DU=1/(1-La)-1/(1-Lb).

For convenience of description, it is assumed that the estimated DU > 0 and the DU is greater than the configurable threshold Th.

In the second step, the baseband subsystem compares the SIR (ie, SIR_1 and SIR_2) simultaneously measured by the baseband module of macro sector 1 and the baseband module of macro sector 2, when DU≥(SIR_2–SIR_1)>Th (where Th It is a configurable threshold parameter, and its value ranges from 6dB≥Th>0dB, where DU is the maximum difference between the uplink and downlink of macro sector 1 and macro sector 2, also called maximum imbalance. Referring to FIG. 4, the baseband module of the macro sector 1 of the baseband subsystem continues to allocate downlink coding resources for the user, but does not allocate uplink traffic channel demodulation resources for the user, that is, the baseband module of the macro sector 1 is not processed. The uplink physical channel data is correlated to save uplink baseband processing resources of macro sector 1; the radio module of macro sector 1 of the radio frequency subsystem continues to allocate downlink power resources to the user.

The baseband module of the macro sector 2 of the baseband subsystem allocates uplink demodulation resources for the user, but does not allocate downlink coding resources for the user, that is, does not process downlink physical channel data for the user, thereby saving downlink baseband processing of the macro sector 2. The resource, the macro sector 2 radio frequency module of the radio subsystem does not allocate downlink power resources for the user, thereby saving the downlink power resources of the macro sector 2.

Compared with the prior art, the method provided by the embodiment achieves the improvement of the efficient use of resources, improves the overall performance effect of the logical cell, saves the uplink and downlink baseband processing resources and the downlink baseband processing resources, and improves the baseband resources. And utilization efficiency of downlink power resources.

Example 3

The present embodiment provides an RRU macro-spatial resource allocation device, which is used to implement the methods provided in Embodiment 1 and Embodiment 2. FIG. 5 is a structural block diagram of the device. As shown in FIG. Includes the following components:

a determining module 51, configured to determine uplink and downlink between the first RRU macro sector and the second RRU macro sector when the terminal moves from the first radio remote unit RRU macro sector to the second RRU macro sector The maximum imbalance; wherein the preset value is any value greater than 0 dB and not greater than 6 dB.

The detecting module 52 is configured to detect an actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector;

The allocation module 53 is configured to: the difference between the actual row signal quality parameter value of the first RRU macro sector and the actual row signal quality parameter value of the second RRU macro sector is not greater than the uplink and downlink maximum imbalance If the value is greater than the preset value, the baseband module of the first RRU macro sector allocates downlink traffic channel coding resources for the terminal, and does not allocate the uplink traffic channel decoding resource, and the radio module of the first RRU macro sector continues to allocate downlink power resources for the terminal. The baseband module of the second RRU macro sector allocates an uplink traffic channel decoding resource for the terminal, and does not process the downlink physical channel data for the terminal, where the first RRU macro sector and the second macro RRU sector use the same downlink scrambling code to transmit .

Further, the foregoing detecting module 42 may include:

The determining module 41 is specifically configured to:

The difference between the detected first RRU macro sector and the second RRU macro sector noise increment RoT is obtained, and the obtained difference is used as the uplink and downlink maximum imbalance. Alternatively, the determining module 41 is specifically configured to:

The detected load of the first RRU macro sector is La, the load of the second RRU macro sector is Lb, and the uplink and downlink maximum unbalance DU is calculated according to the following formula: DU=1/(1-La)- 1/(1-Lb).

The modules or units in the apparatus provided by the embodiments of the present application may pass through one or more digital signal processors (DSPs), application specific integrated circuits (ASICs), processors, microprocessors, controllers, microcontrollers, and on-site Implemented by a programming array (FPGA), programmable logic device, or other electronic unit, or any combination thereof. Some of the functions or processes described in this application embodiment may also be implemented by software executing on a processor.

For example, an embodiment of the present invention further provides an RRU macro inter-sector resource allocation device, for example, the device can be applied to a baseband subsystem, including:

processor;

a memory for storing processor executable instructions;

Wherein the processor is configured to:

Determining an uplink and downlink maximum between the first RRU macro sector and the second RRU macro sector when the terminal moves from the first radio remote unit RRU macro sector to the second RRU macro sector Balance

Detecting an actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector;

a difference between an actual row signal quality parameter value of the first RRU macro sector and an actual row signal quality parameter value of the second RRU macro sector is not greater than the uplink and downlink maximum imbalance and If the value is greater than the preset value, the baseband module of the first RRU macro sector allocates a downlink traffic channel coding resource to the terminal, and does not allocate an uplink traffic channel decoding resource, and the radio module of the first RRU macro sector continues. Allocating a downlink power resource to the terminal; the baseband module of the second RRU macro sector allocates an uplink traffic channel decoding resource to the terminal, and does not process downlink physical channel data for the terminal;

The first RRU macro sector is transmitted with the second macro RRU sector using the same downlink scrambling code.

Industrial applicability

The method and device of the present application can be applied to the field of communications, and can be used to solve the problem that the baseband resources of the base station and the power resources of the base station are wasted due to the imbalance of the uplink signal coverage and the downlink signal coverage in the current multiple RRU sector combination scenarios. .

While the preferred embodiments of the present invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Claims

A method for allocating resources between macro sectors of an RRU, comprising:

Determining an uplink and downlink maximum between the first RRU macro sector and the second RRU macro sector when the terminal moves from the first radio remote unit RRU macro sector to the second RRU macro sector Balance

Detecting an actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector;

a difference between an actual row signal quality parameter value of the first RRU macro sector and an actual row signal quality parameter value of the second RRU macro sector is not greater than the uplink and downlink maximum imbalance and If the value is greater than the preset value, the baseband module of the first RRU macro sector allocates a downlink traffic channel coding resource to the terminal, and does not allocate an uplink traffic channel decoding resource, and the radio module of the first RRU macro sector continues. Allocating a downlink power resource to the terminal; the baseband module of the second RRU macro sector allocates an uplink traffic channel decoding resource to the terminal, and does not process downlink physical channel data for the terminal;

The first RRU macro sector is transmitted with the second macro RRU sector using the same downlink scrambling code.
The method of claim 1, wherein the detecting the actual row signal quality parameter values of the first RRU macro sector and the second RRU macro sector comprises:

The baseband module of the first RRU macro sector detects an uplink signal to interference ratio SIR of the terminal, and the baseband module of the second RRU macro sector detects an uplink SIR of the terminal.
The method of claim 1, wherein the determining an uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector comprises:

And performing a difference operation on the detected first RRU macro sector and the second RRU macro sector noise increment RoT, and the obtained difference is used as the maximum difference value.
The method of claim 1, wherein the determining an uplink and downlink maximum imbalance between the first RRU macro sector and the second RRU macro sector comprises:

The detected load of the first RRU macro sector is La, the load of the second RRU macro sector is Lb, and the uplink and downlink maximum unbalance DU is calculated according to the following formula:

DU=1/(1-La)-1/(1-Lb).
The method according to any one of claims 1 to 4, wherein the preset value is any value greater than 0 dB and not greater than 6 dB.
An RRU macro-spatial resource allocation device, comprising:

Determining a module, configured to determine a top-to-bottom between the first RRU macro sector and the second RRU macro sector when the terminal moves from the first radio remote unit RRU macro sector to the second RRU macro sector Maximum link imbalance

a detecting module, configured to detect an actual row signal quality parameter value of the first RRU macro sector and the second RRU macro sector;

An allocation module, configured to set a difference between an actual row signal quality parameter value of the first RRU macro sector and an actual row signal quality parameter value of the second RRU macro sector to be no greater than the uplink and downlink If the maximum imbalance is greater than the preset value, the baseband module of the first RRU macro sector allocates downlink traffic channel coding resources to the terminal, and does not allocate uplink traffic channel decoding resources, the first RRU macro fan The radio frequency module of the area continues to allocate downlink power resources to the terminal; the baseband module of the second RRU macro sector allocates uplink traffic channel decoding resources to the terminal, and does not process downlink physical channel data for the terminal;

The first RRU macro sector is transmitted with the second macro RRU sector using the same downlink scrambling code.
The apparatus of claim 6, wherein the detecting module comprises:

The baseband module of the first RRU macro sector detects an uplink signal to interference ratio SIR of the terminal, and the baseband module of the second RRU macro sector detects an uplink SIR of the terminal.
The apparatus of claim 6 wherein said determining module is configured to:

And performing a difference operation on the detected first RRU macro sector and the second RRU macro sector noise increment RoT, and the obtained difference is used as the maximum difference value.
The apparatus of claim 6 wherein said determining module is configured to:

The detected load of the first RRU macro sector is La, the load of the second RRU macro sector is Lb, and the uplink and downlink maximum unbalance DU is calculated according to the following formula:

DU=1/(1-La)-1/(1-Lb).
The apparatus according to any one of claims 6 to 9, wherein the predetermined value is any value greater than 0 dB and not greater than 6 dB.