CN106792924A

CN106792924A - A kind of resource allocation methods and equipment

Info

Publication number: CN106792924A
Application number: CN201510815749.6A
Authority: CN
Inventors: 陆松鹤
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2017-05-31

Abstract

The invention discloses a kind of resource allocation methods, it is applied in Long Term Evolution LTE system, the method includes：It is determined that being the predistribution resource of the pre-assigned down channel of terminal of request when resource allocation request is received；It is judged as whether there is the not available unavailable resource of terminal in terminal predistribution resource；And when judged result is to be, unavailable resource is deleted from predistribution resource, while the power of unavailable resource is superimposed upon into predistribution resource deleting in the remaining resource after unavailable resource, and distribute to terminal；Pass sequentially through power convergence, untapped power is assembled and is adjusted on the resource location of scheduling, realize further lifting user equipment downlink signal intensity, improve lower row decoding accuracy, so as to lift cell entire throughput, increase MPS process area, and lifting cell edge is successfully accessed rate.

Description

A kind of resource allocation methods and equipment

Technical field

The invention relates to communication technical field, more particularly to a kind of resource allocation methods.The application Embodiment also relates to a kind of resource allocation apparatus.

Background technology

At present in LTE (Long Term Evolution, Long Term Evolution) communication system, base station it is descending When some frequency ranges have strong jamming, downlink business is disturbed influence, causes cell downlink handling capacity entire lowering. Particularly with the user for being in cell edge, terminal receives the downlink data of base station when there is strong jamming SINR (Signal-to-Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) will be very Low, the handling capacity of the user will be very poor, now needs for the problem, and existing solution is right The scheduling of downlink business is adjusted, and is removed by the resource of descending interference sections, and priority scheduling is not done Disturb or low interference resource.

Namely in the prior art, when downlink frequency choosing method carries out resource selection scheduling, due to channel The presence of interference, part resource is not dispatched, and the corresponding descending power of this part resource is not just used, The waste of power is result in, the no significant change of covering of so actually cell causes the whole of cell The decline of body handling capacity.

The content of the invention

For defect of the prior art, the present invention proposes a kind of resource allocation methods, is applied to long-term In evolution LTE system, the method includes：

It is determined that when resource allocation request is received, for request the pre-assigned down channel of terminal it is pre- Distribution resource；

It is judged as whether there is the not available unavailable resource of the terminal in the predistribution resource；

If the determination result is YES, then the unavailable resource is deleted from the predistribution resource, while The power of unavailable resource is superimposed upon the predistribution resource and deletes the remaining resource after unavailable resource On, and distribute to the terminal.

Preferably, it is described be judged as it is described predistribution resource in the presence or absence of the terminal it is not available not Available resources, specifically include：

Periodically obtain the resource interference situation of down channel；

Timing judges to exceed threshold with the presence or absence of interference in the predistribution resource based on the resource interference situation The disturbed resource of value；

If the determination result is YES, it is determined that there is the not available unavailable resource of the terminal.

Preferably, the periodicity obtains the resource interference situation of down channel, specifically includes：

When the LTE system is LTE-TDD systems, the resource interference feelings of up channel are periodically obtained Condition；

The mirror of the up-downgoing channel based on LTE-TDD systems and the resource interference feelings of up channel Condition determines the resource interference situation of down channel.

Preferably, the resource interference situation is identified especially by interference noise lifting IoT.

Preferably, the power by unavailable resource is superimposed upon the predistribution resource and deletes unavailable money In remaining resource behind source, specifically include：

Determine the first resource block included by the unavailable resource and deleted not in the predistribution resource The Secondary resource block of the remaining resource after available resources；

The quantity of the Resource Block group RBG based on the first resource block, descending sub frame number and the terminal The downlink port quantity of place cell determines the power of the first resource block；

Determine the quantity of the Resource Block group RBG of the Secondary resource block, and based on the Secondary resource block The quantity of Resource Block group RBG determines the quantity of the resource element RE of the Secondary resource block；

The power of the first resource block is evenly distributed to each RE of Secondary resource block.

The invention allows for a kind of resource allocation apparatus, it is applied in Long Term Evolution LTE system, including：

Forward allocator module, for determining when resource allocation request is received, for the terminal of request is divided in advance The predistribution resource of the down channel matched somebody with somebody；

Judge module, for be judged as it is described predistribution resource in the presence or absence of the terminal it is not available Unavailable resource；

Processing module, for when judged result is to be, by the unavailable resource from the predistribution money Deleted in source, while the power of unavailable resource is superimposed upon into the predistribution resource deletes unavailable resource In remaining resource afterwards, and distribute to the terminal.

Preferably, the judge module, specifically for：

Periodically obtain the resource interference situation of down channel；

Preferably, the judge module periodically obtains the resource interference situation of down channel, specifically includes：

Preferably, the power of unavailable resource is superimposed upon the predistribution resource and deleted by the processing module In remaining resource after unavailable resource, specifically include：

Compared with prior art, whether there is the end during the present invention is by being judged as that terminal pre-allocates resource The not available unavailable resource in end；And when judged result is to be, by the unavailable resource from described Deleted in predistribution resource, while the power of unavailable resource is superimposed upon into the predistribution resource deleting not In remaining resource after available resources, and distribute to the terminal；Power convergence is passed sequentially through, will not The power for using is assembled and is adjusted on the resource location of scheduling, realizes further lifting user equipment downlink signal Intensity, improves lower row decoding accuracy, so that cell entire throughput is lifted, increase MPS process face Product, and lifting cell edge is successfully accessed rate.

Brief description of the drawings

Fig. 1 is a kind of schematic flow sheet of resource allocation methods disclosed in the embodiment of the present invention；

Fig. 2 is a kind of schematic flow sheet of resource allocation methods disclosed in the embodiment of the present invention；

Fig. 3 is a kind of CRS of the descending different lower 3 kinds of port forms of CP standards disclosed in the embodiment of the present invention The schematic diagram of pattern；

Fig. 4 is a kind of CRS of the descending different lower 3 kinds of port forms of CP standards disclosed in the embodiment of the present invention The schematic diagram of pattern；

Fig. 5 is a kind of structural representation of resource allocation apparatus disclosed in the embodiment of the present invention.

Specific embodiment

As stated in the Background Art, in the prior art, the waste of power can be caused, and causes the entirety of cell The decline of handling capacity；Therefore, the embodiment of the invention discloses a kind of resource allocation methods, being applied to long-term In evolution LTE system, as shown in figure 1, the method is comprised the following steps：

Step 101, determine when resource allocation request is received, for request terminal it is pre-assigned descending The predistribution resource of channel.

During specific, as shown in Fig. 2 when cell is set up, during the cell in terminal access system, Due to there is service needed to process, therefore can ask to distribute resource, therefore, system can be in advance should The resource location of the resource of terminal distribution down channel, such as distribution is【PRB_A,PRB_B】, wherein PRB (Physical Resource Block) is Physical Resource Block.Specifically, a kind of resource distribution mode is Type 0 resource distribution mode, the Resource Block of its scheduling is with RBG (Resource Block Group, Resource Block group) It is unit, and RBG is the combination of multiple continuous P BR, in this mode, the descending systems of RBG Size vs. Regiment commander's relation wide is as shown in table 1：

Table 1

Step 102, be judged as it is described predistribution resource in the presence or absence of the terminal it is not available unavailable Resource.

It is this specific deterministic process because resource is not using interference is possible as, can be as follows：

Periodically obtain the resource interference situation of down channel；Timing is judged based on the resource interference situation Disturbed resource in the predistribution resource with the presence or absence of interference more than threshold value；If the determination result is YES, Then determine there is the not available unavailable resource of the terminal.

During specific, as shown in Fig. 2 because disturbed condition can change, it is therefore desirable to the cycle Property obtain the resource interference situation of down channel, and timing judges super with the presence or absence of interference in predistribution resource Cross the disturbed resource of threshold value, namely IOT (its in base station physical layer upward cycle T detection full bandwidths In, IOT detection thresholds are IOT_LEVEL), and except interference causes resource not in the case of, It is also possible to it is different the reason for cause unavailable, for example terminal cannot be applicable, and frequency where the resource is not supported Section etc., no longer carries out going to live in the household of one's in-laws on getting married chatting herein, as long as it is unavailable, and system itself is for the part is unavailable Resource allocation have power.

It is determined that after the disturbed condition of full bandwidth, as shown in Fig. 2 the resource location of terminal scheduling will be given 【PRB_A,PRB_B】With the position of the PRB higher than thresholding IOT_LEVEL【PRB_X,PRB_Y】 It is compared, by determining whether exist in predistribution resource between both judgements with the presence or absence of overlapping Disabled resource.

And in a specific embodiment, such as when the LTE system is LTE-TDD systems, institute The resource interference situation for periodically obtaining down channel is stated, is specifically included：

When the LTE system is LTE-TDD systems, the resource interference feelings of up channel are periodically obtained Condition；The resource interference situation is especially by interference IoT (Interference over Thermal, noise lift Rise) it is identified.The mirror and up channel of the up-downgoing channel based on LTE-TDD systems Resource interference situation determine the resource interference situation of down channel.

This is the mirror based on the up-downgoing channel of specific LTE-TDD systems carries out up channel Resource interference situation determination, naturally it is also possible to the resource interference situation of direct access up channel, example Such as direct measurement, specific disturbed condition, the disturbed condition of the various pieces for identifying resource, Interference IoT can be specifically selected to be identified, certainly it is also an option that other parameters, such as disturb Intensity etc..And other systems, such as LTE-FDD systems, then can by direct measurement, or The method proposed based on the self character of its system, is not carrying out superfluous chatting herein.

As shown in Fig. 2 when judged result is to be, then performing subsequent step 103；And if judged result It is no, namely does not exist unavailable resource in predistribution resource, then is carried out to terminal based on predistribution resource Distribution, to cause that terminal demodulates downstream signal using the resource of distribution.

Step 103, if the determination result is YES, then delete the unavailable resource from the predistribution resource Remove, while the power of unavailable resource is superimposed upon surplus after the predistribution resource unavailable resource of deletion In remaining resource, and distribute to the terminal.

Within a particular process, when it is determined that there is unavailable resource, lap will be found out first Position where resource, as shown in Fig. 2 can be for【PRB_W,PRB_V】, the wherein quantity of PRB It is U, and is resource that terminal redistributes down channel based on this, specifically, by lap Resource is deleted, while allocative decision is updated based on remaining resource, in a specific embodiment Kind, descending PDSCH (Physical Downlink can be updated by updating descending RESBITMAP Shared Channel, Physical Downlink Shared Channel) scheduling resource position.And start to perform follow-up work( Rate is converged, also will the power of unavailable resource be superimposed upon after the predistribution resource deletes unavailable resource Remaining resource on.

And specifically, the power of unavailable resource is superimposed upon into the predistribution resource deletes unavailable resource In remaining resource afterwards, specifically include：Determine the first resource block included by the unavailable resource with And the Secondary resource block of the remaining resource after the predistribution resource deletes unavailable resource；Based on institute The quantity of the Resource Block group RBG of first resource block is stated, cell where descending sub frame number and the terminal Downlink port quantity determines the power of the first resource block；Determine the Resource Block group of the Secondary resource block The quantity of RBG, and the quantity of the Resource Block group RBG based on the Secondary resource block determines second money The quantity of the resource element RE of source block；The power of the first resource block is evenly distributed and gives Secondary resource block Each RE.

In the particular embodiment, as shown in Fig. 2 first according to overlap PRB position, namely【PRB_W, PRB_V】And descending sub frame number calculates the quantity M of the RE in the PCSCH regions of interference sections, tool The computing formula of body is：M=RBG*L* (14-CFI) * 12；Wherein, L is the money for disturbing lap The RBG quantity in source；CFI：(control format indicator, descending control area takes symbol quantity, Namely descending sub frame number), the occupancy relation for influenceing descending control area and service area is conventional descending Subframe value is 1-3, and special descending sub frame value is 1-2；The frequency domain of each PRB is 12 subcarriers.

Secondly, based on CRS (Cell-specific reference signal, cell reference signals), port number And M determines the M general power of RE, specifically, it is divided into single port, and two kinds of situations of dual-port, In the case of single port, corresponding diagram 3, the legend of the Tu4Zhong the superiors, computing formula is： POWER_IOT=CRS_power+10*lg (M), unit dBmw, it is seen that general power is allocated to this The power 10*lg (M) of part resource adds CRS power sums, and in the present invention, in single port In the case of, the power that can be allocated refers to 10*lg (M).In the case that also a kind of situation is dual-port, Corresponding diagram 3, middle legend in Fig. 4, in the case, computing formula is POWER_IOT= CRS_power ,+10*lg (M)+Pa, wherein, pa=PDSCH_RE_power-CRS_power, specifically, In the case of dual-port, the value of pa is for span：(-6、-4.77、-3、-1.77、0、1、2、 3db), also it is a kind of be four ports situation, corresponding diagram 3, undermost legend, computing formula in Fig. 4 Be POWER_IOT=CRS_power+10*lg (M)+Pa, but at present for four ports in the case of Pa Value agreement do not define temporarily.

Still by taking single port as an example, then determine not interfering with the RE sum N of the PRB of resource, to disturb The power 10*lg (M) of resource gives N number of RE, in subsequent process, the signal that each RE is lifted Intensity notifies physical layer, to cause that it is not dry that physical layer is issued according to the power summation that the RE of initial schedule is lifted The RE power of the PDSCH of the resource disturbed, and finally allow that terminal smoothly demodulates downstream signal.

Due to there is power to converge so that signal enhancing, cell inward flange user receives under script disturbed condition To downstream signal intensity it is weaker, downlink communication quality is poor, the situation of user descending perception difference is able to Alleviate, downlink business speed is lifted, due to descending MCS (the Modulation and of Cell Edge User Coding Scheme) grade is relatively low, now uses low-order-modulated mode QPSK (Quadrature Phase Shift Keyin, QPSK, a kind of digital modulation mode), the lifting of signal intensity is right The demodulation of QPSK is helpful to, and can increase the downstream rate of descending area coverage and cell edge.

In order to be further detailed to the present invention, the embodiment of the invention also discloses a kind of resource allocation Equipment, is applied in Long Term Evolution LTE system, as shown in figure 5, including：

Forward allocator module 501, for determining when resource allocation request is received, for the terminal of request is advance The predistribution resource of the down channel of distribution；

Judge module 502, for be judged as it is described predistribution resource in the presence or absence of the terminal it is not available Unavailable resource；

Processing module 503, for when judged result is to be, by the unavailable resource from the predistribution Deleted in resource, while the power of unavailable resource is superimposed upon into the predistribution resource deletes unavailable money In remaining resource behind source, and distribute to the terminal.

Specifically, the judge module 502, specifically for：

Periodically obtain the resource interference situation of down channel；

The judge module 502 periodically obtains the resource interference situation of down channel, specifically includes：

The resource interference situation is identified especially by interference noise lifting IoT.

The power of unavailable resource is superimposed upon the predistribution resource deletion by the processing module 503 can not With in the remaining resource after resource, specifically include：

The present invention by be judged as terminal pre-allocate resource in the presence or absence of the terminal is not available can not Use resource；And when judged result is to be, the unavailable resource is deleted from the predistribution resource, The power of unavailable resource is superimposed upon simultaneously remaining after the predistribution resource unavailable resource of deletion In resource, and distribute to the terminal；Power convergence is passed sequentially through, untapped power is assembled and is adjusted Onto the resource location of scheduling, further lifting user equipment downlink signal intensity is realized, improve descending translating Code accuracy, so as to lift cell entire throughput, increases MPS process area, and lifting cell side Edge is successfully accessed rate.

Through the above description of the embodiments, those skilled in the art can be understood that this Shen Please be realized by hardware, it is also possible to realized by the mode of software plus necessary general hardware platform. Based on such understanding, the technical scheme of the application can be embodied in the form of software product, and this is soft It (can be CD-ROM, USB flash disk is mobile hard that part product can be stored in a non-volatile memory medium Disk etc.) in, including some instructions are used to so that a computer equipment (can be personal computer, take Business device, or the network equipment etc.) perform method described in the application each implement scene.

It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, in accompanying drawing Module or necessary to flow not necessarily implements the application.

It will be appreciated by those skilled in the art that the module in device in implement scene can be according to implement scene Description be distributed in the device of implement scene, it is also possible to is carried out respective change and is disposed other than this implementation In one or more devices of scene.The module of above-mentioned implement scene can merge into a module, also may be used To be further split into multiple submodule.

Above-mentioned the application sequence number is for illustration only, and the quality of implement scene is not represented.

Disclosed above is only several specific implementation scenes of the application, but, the application is not limited to This, the changes that any person skilled in the art can think of should all fall into the protection domain of the application.

Claims

1. a kind of resource allocation methods, it is characterised in that be applied in Long Term Evolution LTE system, the party Method includes：

2. the method for claim 1, it is characterised in that described to be judged as the predistribution resource In whether there is the not available unavailable resource of the terminal, specifically include：

Periodically obtain the resource interference situation of down channel；

3. method as claimed in claim 2, it is characterised in that the periodicity obtains down channel Resource interference situation, specifically includes：

4. method as claimed in claim 3, it is characterised in that the resource interference situation especially by Interference noise lifting IoT is identified.

5. the method for claim 1, it is characterised in that the power by unavailable resource is folded It is added in the predistribution resource to delete in the remaining resource after unavailable resource, specifically includes：

6. a kind of resource allocation apparatus, it is characterised in that be applied in Long Term Evolution LTE system, including：

7. equipment as claimed in claim 6, it is characterised in that the judge module, specifically for：

Periodically obtain the resource interference situation of down channel；

8. equipment as claimed in claim 7, it is characterised in that under the judge module is periodically obtained The resource interference situation of row channel, specifically includes：

9. equipment as claimed in claim 8, it is characterised in that the resource interference situation especially by Interference noise lifting IoT is identified.

10. the method for claim 1, it is characterised in that the processing module is by unavailable money The power in source is superimposed upon the predistribution resource and deletes in the remaining resource after unavailable resource, specific bag Include：