CN103490869A - Scheduling method and device for coordinated multi-point user terminals - Google Patents

Abstract

The invention discloses a scheduling method and device for coordinated multi-point user terminals. The method includes the steps that when CoMP user terminals exist in the current user terminals to be scheduled and an unallocated downlink scheduling unit exists in a current downlink schedulable subframe, a priority value of each non-CoMP user terminal, in the current user terminals to be scheduled, on the current downlink scheduling unit and a priority value of each CoMP user terminal, in the current user terminals to be scheduled, on the current downlink scheduling unit are calculated according to a preset priority value calculation method of the non-CoMP user terminals and a preset priority value calculation method of the CoMP user terminals; the current downlink scheduling unit is allocated to the current user terminal to be scheduled, wherein the current user terminal to be scheduled has the highest priority value. Compared with the prior art, the scheduling method and device for the coordinated multi-point user terminals can improve performance of a coordinated multi-point transmission system.

Description

A kind of dispatching method of coordinate multipoint user terminal and device

Technical field

The present invention relates to wireless communication technology, particularly a kind of dispatching method of coordinate multipoint user terminal and device.

Background technology

Coordinate multipoint (Coordinated Multi-Point, CoMP) transmission technology is introduced cooperation in a plurality of minizones, utilize the shared channel of base station end, user data or schedule information, reduce the interference between a plurality of communities, thus the effective elevator system throughput service quality of Cell Edge User especially.The CoMP technology, according to sharing users data whether between base station, is divided into JP(Joint Processing, Combined Treatment) and CS (Coordinated Scheduling, cooperative scheduling), or, be divided into JP and CB(Beamforming, beam shaping).In JP, storage of subscriber data is at a plurality of Nodes of cooperation, the whether simultaneously transmission of participating user data of a plurality of nodes according to cooperation, JP is divided into again JT(Joint Transmission, combines transmission) and DCS(Dynamic Cell Selection, dynamic cell is selected).

In descending CoMP system, at first base station needs to know descending channel information, then according to descending channel information, user data is carried out to preliminary treatment, thereby eliminates the interference between a plurality of communities.If the mode by the user feedback descending channel information is obtained descending channel information, a large amount of information feedbacks can cause larger impact to systematic function.At TDD(Time Division Duplexing, time division duplex) in system, due to the same propagation channel of transmit-receive sharing, can think that in theory up channel is identical with down channel, up channel and down channel have reciprocity.Just because of this, uplink detection reference signal (the Sounding Reference Signal that transmitting terminal in the TDD system can utilize user terminal to send, SRS) detect uplink channel information, and then acquisition descending channel information, base station utilizes the descending channel information obtained to carry out preliminary treatment to user data, then on down channel, sends the data to user terminal.But base station is receiving uplink detection reference signal that user terminal sends and is utilizing down channel to send between data to exist the regular hour poor, make channel itself produce certain decline variation.This reception uplink detection reference signal and the actual downlink data inconsistency in time that sends can affect the performance that CoMP transmits.

A plurality of cooperative nodes transmission of participating user data simultaneously in JT, thereby to synchronously having relatively high expectations of system, although all use high-precision crystal oscillator in actual base station product, adopt the base station synchronization technology simultaneously, but because actual radio frequency link is not ideal enough, cause the relative carrier frequency of the signal of eating dishes without rice or wine of each community still to have certain frequency departure, and the basic independent distribution of the frequency deviation of different districts, therefore can cause between the base station that participates in cooperation and have certain frequency deviation, this causes in JT, the channel of the channel obtained by SRS and actual transmissions downlink data, not only along with the described time difference produces the decline variation, in the channel of transmitting downlink data, introduced simultaneously to base station between the relevant variable of frequency deviation, make at the precoding algorithm of base station side and can not effectively eliminate the interference between cooperation cell, thereby affected the performance of cooperative multicast system.

For example, in descending CoMP system, two base station eNodeB ₁and eNodeB ₂communicate eNodeB with same UE ₁and eNodeB ₂complete Synchronization in time.ENodeB ₁at carrier frequency f ₁send radiofrequency signal x ₁(t), eNodeB ₂at carrier frequency f ₂send radiofrequency signal x ₂(t).Suppose that channel is that arrowband is smooth, by eNodeB ₁and the multifactor in the Channel Modeling between UE is made as 1, by eNodeB ₂and the multifactor in the Channel Modeling between UE is made as a.In addition, the signal of UE reception eNB2 postpones τ in time with respect to eNB1.

So, the radiofrequency signal that UE receives can be expressed as:

y(t)=x ₁(t)+ax ₂(t-τ)

Radiofrequency signal x ₁and x (t) ₂(t) be expressed as respectively:

X wherein _b(t) be eNodeB ₁and eNodeB ₂the baseband signal sent, Δ f is eNodeB ₁and eNodeB ₂between frequency deviation:

The baseband signal that UE receives is:

$y_b\left(t\right)=x_b\left(t\right)+{\mathrm{ax}}_b(t-\mathrm{\&tau;}){\mathrm{<figure-callout\; id="2"\; label="e\; j"\; filenames="HDA00001755017800022.png"\; state="\{\{state\}\}">e</figure-callout>}}^j$

Therefore, can be by eNodeB ₂and the multifactor in the Channel Modeling between UE is expressed as the function of t, that is:

$a_b\left(t\right)={\mathrm{<figure-callout\; id="2"\; label="ae\; j"\; filenames="HDA00001755017800022.png"\; state="\{\{state\}\}">ae</figure-callout>}}^j$

That is to say eNodeB ₁and eNodeB ₂between the channel that become while having caused one of frequency deviation.

Suppose that UE receives eNodeB ₂signal with respect to eNodeB ₁do not postpone (that is: τ=0), at eNodeB ₁and eNodeB ₂between the certain situation of frequency deviation under, along with the increase of time interval t, eNodeB ₂compare eNodeB with the channel phase of UE ₁with the linear 2 π Δ ft that increase of the channel phase of UE.

In realizing process of the present invention, the inventor finds that in prior art, at least there are the following problems:

In existing cooperative multicast system, in the situation that the frequency deviation between cooperative base station is certain, because base station is larger to the time interval between the uplink detection reference signal of CoMP user terminal transmission downlink data and the transmission of reception CoMP user terminal, therefore had a strong impact on the performance of cooperative multicast system.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of dispatching method of coordinate multipoint user terminal, can improve the performance of cooperative multicast system.

Another object of the present invention is to provide a kind of dispatching device of coordinate multipoint user terminal, can improve the performance of cooperative multicast system.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of dispatching method of coordinate multipoint user terminal, described method comprises:

A, when at the current coordinate multipoint CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, from described current descending the scheduling descending scheduling unit corresponding to subframe, select a unappropriated descending scheduling unit as current descending scheduling unit;

B, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal;

C, described current descending scheduling unit is distributed to the current scheduling user terminal for the treatment of of priority valve maximum, returned to execution step A.

A kind of dispatching device of coordinate multipoint user terminal comprises: selected cell, computing unit and scheduling unit;

Described selected cell, for when current, until scheduling user terminal, having coordinate multipoint CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe, from described current descending the scheduling descending scheduling unit corresponding to subframe, select a unappropriated descending scheduling unit as current descending scheduling unit, described current descending scheduling unit is notified to described computing unit;

Described computing unit, for the priority valve computational methods according to default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal, described priority valve is sent to described scheduling unit;

Described scheduling unit, for distributing to described current descending scheduling unit the current scheduling user terminal for the treatment of of priority valve maximum.

Visible, adopt technical scheme of the present invention, when at the current CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on current descending scheduling unit in scheduling user terminal, the current scheduling user terminal for the treatment of that priority valve is the highest is distributed to in the current descending current descending scheduling unit of dispatching in subframe, due to when calculating the priority valve of non-CoMP user terminal and CoMP user terminal, adopt respectively the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, therefore make the CoMP user terminal be easier to after sending uplink detection reference signal by forward scheduling, so can shorten base station to the time interval between the uplink detection reference signal of CoMP user terminal transmission downlink data and the transmission of reception CoMP user terminal, thereby the time interval solved between the uplink detection reference signal that sends downlink data and the transmission of reception CoMP user terminal in the prior art due to base station to the CoMP user terminal is larger, have a strong impact on the problem of the performance of cooperative multicast system.Dispatching method and the device of the coordinate multipoint user terminal that the present invention proposes, in the situation that the frequency deviation between cooperative base station is certain, can improve the performance of cooperative multicast system.

The accompanying drawing explanation

The dispatching method flow chart that Fig. 1 is coordinate multipoint user terminal of the present invention.

Fig. 2 is that the present invention calculates the current method flow diagram for the treatment of each CoMP user terminal and the priority valve of each non-CoMP user terminal on current descending scheduling unit in scheduling user terminal.

Fig. 3 is a kind of wireless frame structure schematic diagram that is applicable to the TDD system in prior art.

Fig. 4 is the method to set up schematic diagram that the present invention dispatches weight.

The dispatching device structural representation that Fig. 5 is coordinate multipoint user terminal of the present invention.

Embodiment

For problems of the prior art, the scheduling scheme of the CoMP user terminal after a kind of the improvement is proposed in the present invention, can improve the performance of cooperative multicast system.

For make technical scheme of the present invention clearer, understand, referring to the accompanying drawing embodiment that develops simultaneously, scheme of the present invention is described in further detail.

The dispatching method flow chart that Fig. 1 is coordinate multipoint user terminal of the present invention.As shown in Figure 1, comprise the following steps:

Step 101: when at the current CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, eNodeB selects a unappropriated descending scheduling unit as current descending scheduling unit from current descending the scheduling descending scheduling unit corresponding to subframe.

In this step, eNodeB can adopt conventional means to judge and currently treat in scheduling user terminal whether to exist the CoMP user terminal, and whether current descending the scheduling in subframe exist unappropriated descending scheduling unit, does not repeat them here.

Before this step, eNodeB need to each treat that scheduling user terminal is set to CoMP user terminal or non-CoMP user terminal in advance.

In specific embodiments of the invention, can come by multiple method to set up that each treats that scheduling user terminal is set to CoMP user terminal or non-CoMP user terminal in advance.For example, when user terminal moves to cell edge from center of housing estate, because the interference that is subject to adjacent cell increases, therefore this user terminal can be measured received power (the Reference Signal Receiving Power of the descending detection reference signal of community to each that preset in measuring assembly, RSRP) or the quality of reception of descending detection reference signal (Reference Signal Receiving Quality, RSRQ) measured, and each is measured to the RSRP of community or the eNodeB that RSRQ sends to main Serving cell, the eNodeB of main Serving cell is after the RSRP or RSRQ of each the measurement community that receives described user terminal transmission, judge whether that according to described RSRP or RSRQ described user terminal is set to the CoMP user terminal.

In addition, in preferred embodiment of the present invention, eNodeB can judge whether that described user terminal is set to the CoMP user terminal according to following two kinds of methods:

First method, in RSRP or RSRQ that eNodeB sends at described user terminal, the absolute value of the difference of the RSRP of each the measurement community of calculating except main Serving cell or the RSRP of RSRQ and main Serving cell or RSRQ, judge whether described minimization of the sum of absolute value is less than the first predetermined threshold value; If described user terminal is set to the CoMP user terminal; Otherwise described user terminal is set to non-CoMP user terminal.

Second method, in the default measurement set of cells that eNodeB sends according to described user terminal, each measures RSRP or the RSRQ of community, and whether RSRP or the maximum in RSRQ that each in the default measurement of judgement set of cells except main Serving cell measured community are greater than the second predetermined threshold value; If described user terminal is set to the CoMP user terminal; Otherwise described user terminal is set to non-CoMP user terminal.

In this step, when at the current CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, eNodeB selects a unappropriated descending scheduling unit as current descending scheduling unit from current descending the scheduling descending scheduling unit corresponding to subframe.For example, eNodeB can be according to frequency order from low to high from current descending the scheduling descending scheduling unit corresponding to subframe, select successively a unappropriated descending scheduling unit as current descending scheduling unit, eNodeB also can select a unappropriated descending scheduling unit as current descending scheduling unit from current descending the scheduling descending scheduling unit corresponding to subframe according to other presetting methods.

In addition, when current while in scheduling user terminal, not having the CoMP user terminal, eNodeB can be according to the current scheduling user terminal for the treatment of of dispatching method scheduling of the prior art; When eNodeB judgement, current descending while not having unappropriated descending scheduling unit in dispatching subframe, eNodeB finishes at current descending scheduling flow in dispatching subframe.

Step 102:eNodeB, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculates current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on current descending scheduling unit in scheduling user terminal.

Fig. 2 is that the present invention calculates the current method flow diagram for the treatment of each non-CoMP user terminal and the priority valve of each CoMP user terminal on current descending scheduling unit in scheduling user terminal.As shown in Figure 2, comprise step as described below:

Step 201:eNodeB currently treats in scheduling user terminal that each non-CoMP user terminal and each CoMP user terminal arrange respectively non-CoMP scheduling of user terminals weight and CoMP scheduling of user terminals weight.

In specific embodiments of the invention, do not limit the concrete method to set up of non-CoMP scheduling of user terminals weight.For example, eNodeB can be set to 1 by non-CoMP scheduling of user terminals weight, and eNodeB can calculate the current priority valve for the treatment of each non-CoMP user terminal in scheduling user terminal according to common priority valve computational methods.

In specific embodiments of the invention, currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and CoMP user terminal and dispatch number of subframes while being less than n when described, eNodeB is that described CoMP user terminal arranges CoMP scheduling of user terminals weight according to the first presetting method, make CoMP scheduling of user terminals weight be greater than non-CoMP scheduling of user terminals weight, wherein, 1≤n<N, N is all descending number of subframes of dispatching that can be used for downlink data transmission in the predetermined period that sends uplink detection reference signal at the CoMP user terminal.Wherein, the concrete value of described n can set in advance according to actual needs.

Currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and CoMP user terminal and dispatch number of subframes when being more than or equal to n and being less than N when described, eNodeB is that described CoMP user terminal arranges CoMP scheduling of user terminals weight according to the second presetting method, makes CoMP scheduling of user terminals weight be less than non-CoMP scheduling of user terminals weight.

In the wireless frame structure of TDD system, can adopt multiple uplink and downlink timeslot configuration mode, in the specific embodiment of the present invention, in conjunction with a kind of configuration mode of uplink and downlink timeslot wherein, describe, Fig. 3 is a kind of wireless frame structure schematic diagram that is applicable to the TDD system in prior art.As shown in Figure 3; the length of 1 radio frames is 10ms; the field that comprises 2 5ms; each field comprises 5 subframes, i.e. 2 descending sub frames (D), 2 sub-frame of uplink (U) and 1 special subframe (S), wherein; 1 descending sub frame comprises 2 descending time slots; 1 sub-frame of uplink comprises 2 ascending time slots, and described special subframe comprises descending pilot frequency time slot (DwPTS), protection interval (Guard Period, GP) and uplink pilot time slot (UpPTS).It should be noted that, in specific embodiments of the invention, the described descending subframe of dispatching comprises descending sub frame D and special subframe S, as eNodeB in special subframe S during transmitting downlink data, can only the descending pilot frequency time slot in this special subframe on transmitting downlink data.

Fig. 4 is the method to set up schematic diagram that the present invention dispatches weight.In specific embodiments of the invention, the integral multiple that the predetermined period of CoMP user terminal transmission uplink detection reference signal is 5ms.For example, as shown in Figure 4, when the predetermined period of CoMP user terminal transmission uplink detection reference signal is 5ms, the N value is 3, now can be set to 2 by n; And, when the predetermined period of CoMP user terminal transmission uplink detection reference signal is 10ms, the N value is 6, now can be set to 5 by n.

For instance, if the value of n is 5, when the predetermined period of certain CoMP user terminal transmission uplink detection reference signal is 10ms, suppose that the current descending sequence number m of subframe in the 10ms predetermined period that dispatch is 5, the current descending descending number of subframes of dispatching of dispatching between the last time slot that sends the upstream detection pilot frequency signal of subframe and CoMP user terminal is 4, be less than n, eNodeB arranges CoMP scheduling of user terminals weight according to the first presetting method for this CoMP user terminal, make CoMP scheduling of user terminals weight be greater than non-CoMP scheduling of user terminals weight, suppose that the current descending sequence number m of subframe in the 10ms predetermined period that dispatch is 6, the current descending descending number of subframes of dispatching of dispatching between the last time slot that sends the upstream detection pilot frequency signal of subframe and CoMP user terminal is 5, equal n, eNodeB arranges CoMP scheduling of user terminals weight and non-CoMP scheduling of user terminals weight according to the second presetting method for this CoMP user terminal, makes CoMP scheduling of user terminals weight be less than non-CoMP scheduling of user terminals weight.

Preferably, in specific embodiments of the invention, described the first presetting method can be: eNodeB just CoMP scheduling of user terminals weight is set to constant a, and wherein, a is greater than non-CoMP scheduling of user terminals weight.For example, when non-CoMP scheduling of user terminals weight is 1, eNodeB can be set to 2 by CoMP scheduling of user terminals weight.

In addition, in preferred embodiment of the present invention, described the first presetting method can also be: eNodeB just CoMP scheduling of user terminals weight is set to f ₁(m), f wherein ₁(m) be greater than non-CoMP scheduling of user terminals weight, and make f ₁(m) along with the current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at the CoMP user terminal.

Preferably, in specific embodiments of the invention, described the second presetting method can be: eNodeB just states CoMP scheduling of user terminals weight and is set to constant b, and wherein, b is more than or equal to 0 and be less than non-CoMP scheduling of user terminals weight.For example,, when non-CoMP scheduling of user terminals weight is 1; ENodeB can be set to 1/2 by CoMP scheduling of user terminals weight.

In addition, in preferred embodiment of the present invention, described the second presetting method can also be: eNodeB just CoMP scheduling of user terminals weight is set to f ₂(m), wherein, f ₂(m) be more than or equal to 0 and be less than non-CoMP scheduling of user terminals weight, and make f ₂(m) along with the current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at the CoMP user terminal.

Step 202:eNodeB calculates current treat each non-CoMP user terminal and the initial priority value of each CoMP user terminal on current descending scheduling unit in scheduling user terminal.

In this step, eNodeB can calculate current treat each non-CoMP user terminal and the initial priority value of each CoMP user terminal on current descending scheduling unit in scheduling user terminal according to common priority valve computational methods.For example, eNodeB can calculate current treat each non-CoMP user terminal and the initial priority value of each CoMP user terminal on current descending scheduling unit in scheduling user terminal according to common direct ratio fair algorithm, max carrier to interference algorithm or weight limit delay priority algorithm.

Step 203:eNodeB, according to non-CoMP scheduling of user terminals weight and the initial priority value of each non-CoMP user terminal, obtains the priority valve of each non-CoMP user terminal on current descending scheduling unit.

In this step, eNodeB can be multiplied by the initial priority value by the non-CoMP scheduling of user terminals weight of each non-CoMP user terminal, obtains the priority valve of each non-CoMP user terminal on current descending scheduling unit.

Step 204:eNodeB, according to CoMP scheduling of user terminals weight and the initial priority value of each CoMP user terminal, obtains the priority valve of each CoMP user terminal on current descending scheduling unit.

In this step, eNodeB can be multiplied by the initial priority value by the CoMP scheduling of user terminals weight of each CoMP user terminal, obtains the priority valve of each CoMP user terminal on current descending scheduling unit.

It should be noted that, in specific embodiments of the invention, do not limit the execution sequence of step 203 and step 204, eNodeB can first perform step 203, rear execution step 204; Also can first perform step 204, rear execution step 203; Can also perform step 203 and step 204 simultaneously.

Step 103:eNodeB distributes to current descending scheduling unit the current scheduling user terminal for the treatment of of priority valve maximum, returns to execution step 101.

In this step, eNodeB calculate each current treat the priority valve of scheduling user terminal on current descending scheduling unit after, compare each current size for the treatment of the priority valve of scheduling user terminal on current descending scheduling unit, current descending scheduling unit is distributed to the current scheduling user terminal for the treatment of of priority valve maximum, returned to execution step 101.

The dispatching method of the coordinate multipoint user terminal that the present invention proposes, when at the current CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on current descending scheduling unit in scheduling user terminal, the current scheduling user terminal for the treatment of that priority valve is the highest is distributed to in the current descending current descending scheduling unit of dispatching in subframe, due to when calculating the priority valve of non-CoMP user terminal and CoMP user terminal, adopt respectively the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, therefore make the CoMP user terminal be easier to after sending uplink detection reference signal by forward scheduling, so can shorten base station to the time interval between the uplink detection reference signal of CoMP user terminal transmission downlink data and the transmission of reception CoMP user terminal, thereby the time interval solved between the uplink detection reference signal that sends downlink data and the transmission of reception CoMP user terminal in the prior art due to base station to the CoMP user terminal is larger, have a strong impact on the problem of the performance of cooperative multicast system.The dispatching method of the coordinate multipoint user terminal that the present invention proposes, in the situation that the frequency deviation between cooperative base station is certain, can improve the performance of cooperative multicast system.

The dispatching device structural representation that Fig. 5 is coordinate multipoint user terminal of the present invention.As shown in Figure 5, comprising: selected cell 501, computing unit 502 and scheduling unit 503;

Described selected cell 501, for when current, until scheduling user terminal, having coordinate multipoint CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe, from described current descending the scheduling descending scheduling unit corresponding to subframe, select a unappropriated descending scheduling unit as current descending scheduling unit, described current descending scheduling unit is notified to described computing unit 502;

Described computing unit 502, for the priority valve computational methods according to default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal, described priority valve is sent to described scheduling unit 503;

Described scheduling unit 503, for distributing to described current descending scheduling unit the current scheduling user terminal for the treatment of of priority valve maximum.

Further, described computing unit 502 comprises: subelement 5021, computation subunit 5022 are set and obtain subelement 5023;

The described subelement 5021 that arranges, be used to and describedly currently treat in scheduling user terminal that each non-CoMP user terminal and each CoMP user terminal arrange respectively non-CoMP scheduling of user terminals weight and CoMP scheduling of user terminals weight, send to the described subelement 5023 that obtains by described non-CoMP scheduling of user terminals weight and described CoMP scheduling of user terminals weight;

Described computation subunit 5022, for calculating described current each non-CoMP user terminal of scheduling user terminal and the initial priority value of each CoMP user terminal on described current descending scheduling unit treated, described initial priority value is sent to the described subelement 5023 that obtains;

The described subelement 5023 that obtains, for described non-CoMP scheduling of user terminals weight and the described initial priority value according to each non-CoMP user terminal, obtain the priority valve of each non-CoMP user terminal on described current descending scheduling unit, and, according to described CoMP scheduling of user terminals weight and the described initial priority value of each CoMP user terminal, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit.

Further, the described subelement 5021 that arranges, specifically for when described, currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes while being less than n, according to the first presetting method, be that described CoMP user terminal arranges described CoMP scheduling of user terminals weight, make described CoMP scheduling of user terminals weight be greater than described non-CoMP scheduling of user terminals weight, wherein, 1≤n<N, N is all descending number of subframes of dispatching that can be used for downlink data transmission in the predetermined period that sends uplink detection reference signal at described CoMP user terminal,

Currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes when being more than or equal to n and being less than N when described, be that described CoMP user terminal arranges CoMP scheduling of user terminals weight according to the second presetting method, make described CoMP scheduling of user terminals weight be less than described non-CoMP scheduling of user terminals weight.

Further, described the first presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant a, and wherein, a is greater than described non-CoMP scheduling of user terminals weight.

Further, described the first presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₁(m), f wherein ₁(m) be greater than described non-CoMP scheduling of user terminals weight, and make f ₁(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

Further, described the second presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant b, and wherein, b is more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight.

Further, described the second presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₂(m), wherein, f ₂(m) be more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight, and make f ₂(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

Further, the described subelement 5023 that obtains, be multiplied by described initial priority value specifically for the described CoMP scheduling of user terminals weight by each CoMP user terminal, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit.

The dispatching device of the coordinate multipoint user terminal that the present invention proposes, when at the current CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on current descending scheduling unit in scheduling user terminal, the current scheduling user terminal for the treatment of that priority valve is the highest is distributed to in the current descending current descending scheduling unit of dispatching in subframe, due to when calculating the priority valve of non-CoMP user terminal and CoMP user terminal, adopt respectively the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, therefore make the CoMP user terminal be easier to after sending uplink detection reference signal by forward scheduling, so can shorten base station to the time interval between the uplink detection reference signal of CoMP user terminal transmission downlink data and the transmission of reception CoMP user terminal, thereby the time interval solved between the uplink detection reference signal that sends downlink data and the transmission of reception CoMP user terminal in the prior art due to base station to the CoMP user terminal is larger, have a strong impact on the problem of the performance of cooperative multicast system.The dispatching device of the coordinate multipoint user terminal that the present invention proposes, in the situation that the frequency deviation between cooperative base station is certain, can improve the performance of cooperative multicast system.

The specific works flow process of Fig. 5 shown device embodiment please refer to the respective description in embodiment of the method shown in Fig. 1, repeats no more.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (16)

1. the dispatching method of a coordinate multipoint user terminal, is characterized in that, comprising:

A, when at the current coordinate multipoint CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe that exists in scheduling user terminal, from described current descending the scheduling descending scheduling unit corresponding to subframe, select a unappropriated descending scheduling unit as current descending scheduling unit;

B, according to the priority valve computational methods of default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal;

C, described current descending scheduling unit is distributed to the current scheduling user terminal for the treatment of of priority valve maximum, returned to execution step A.

2. method according to claim 1, it is characterized in that, the described priority valve computational methods according to default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal, comprising:

Currently treat in scheduling user terminal that each non-CoMP user terminal and each CoMP user terminal arrange respectively non-CoMP scheduling of user terminals weight and CoMP scheduling of user terminals weight for described;

Calculate described current treat each non-CoMP user terminal and the initial priority value of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal;

According to described non-CoMP scheduling of user terminals weight and the described initial priority value of each non-CoMP user terminal, obtain the priority valve of each non-CoMP user terminal on described current descending scheduling unit;

According to described CoMP scheduling of user terminals weight and the described initial priority value of each CoMP user terminal, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit.

3. method according to claim 2, is characterized in that, describedly for described, currently treats in scheduling user terminal that each CoMP user terminal arranges CoMP scheduling of user terminals weight, comprising:

Currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes while being less than n when described, according to the first presetting method, be that described CoMP user terminal arranges described CoMP scheduling of user terminals weight, make described CoMP scheduling of user terminals weight be greater than described non-CoMP scheduling of user terminals weight, wherein, 1≤n<N, N is all descending number of subframes of dispatching that can be used for downlink data transmission in the predetermined period that sends uplink detection reference signal at described CoMP user terminal,

Currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes when being more than or equal to n and being less than N when described, be that described CoMP user terminal arranges described CoMP scheduling of user terminals weight according to the second presetting method, make described CoMP scheduling of user terminals weight be less than described non-CoMP scheduling of user terminals weight.

4. method according to claim 3, is characterized in that, described the first presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant a, and wherein, a is greater than described non-CoMP scheduling of user terminals weight.

5. method according to claim 3, is characterized in that, described the first presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₁(m), f wherein ₁(m) be greater than described non-CoMP scheduling of user terminals weight, and make f ₁(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

6. method according to claim 3, is characterized in that, described the second presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant b, and wherein, b is more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight.

7. method according to claim 3, is characterized in that, described the second presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₂(m), wherein, f ₂(m) be more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight, and make f ₂(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

8. method according to claim 2, it is characterized in that, the described described CoMP scheduling of user terminals weight according to each CoMP user terminal and described initial priority value, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit, comprising:

The described CoMP scheduling of user terminals weight of each CoMP user terminal is multiplied by described initial priority value, obtains the priority valve of each CoMP user terminal on described current descending scheduling unit.

9. the dispatching device of a coordinate multipoint user terminal, is characterized in that, comprising: selected cell, computing unit and scheduling unit;

Described selected cell, for when current, until scheduling user terminal, having coordinate multipoint CoMP user terminal and current descending while having unappropriated descending scheduling unit in dispatching subframe, from described current descending the scheduling descending scheduling unit corresponding to subframe, select a unappropriated descending scheduling unit as current descending scheduling unit, described current descending scheduling unit is notified to described computing unit;

Described computing unit, for the priority valve computational methods according to default non-CoMP user terminal and the priority valve computational methods of default CoMP user terminal, calculate described current treat each non-CoMP user terminal and the priority valve of each CoMP user terminal on described current descending scheduling unit in scheduling user terminal, described priority valve is sent to described scheduling unit;

Described scheduling unit, for distributing to described current descending scheduling unit the current scheduling user terminal for the treatment of of priority valve maximum.

10. device according to claim 9, is characterized in that, described computing unit comprises: subelement, computation subunit are set and obtain subelement;

The described subelement that arranges, be used to and describedly currently treat in scheduling user terminal that each non-CoMP user terminal and each CoMP user terminal arrange respectively non-CoMP scheduling of user terminals weight and CoMP scheduling of user terminals weight, send to the described subelement that obtains by described non-CoMP scheduling of user terminals weight and described CoMP scheduling of user terminals weight;

Described computation subunit, for calculating described current each non-CoMP user terminal of scheduling user terminal and the initial priority value of each CoMP user terminal on described current descending scheduling unit treated, described initial priority value is sent to the described subelement that obtains;

The described subelement that obtains, for described non-CoMP scheduling of user terminals weight and the described initial priority value according to each non-CoMP user terminal, obtain the priority valve of each non-CoMP user terminal on described current descending scheduling unit, and, according to described CoMP scheduling of user terminals weight and the described initial priority value of each CoMP user terminal, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit.

11. device according to claim 10, it is characterized in that, the described subelement that arranges, specifically for when described, currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes while being less than n, according to the first presetting method, be that described CoMP user terminal arranges described CoMP scheduling of user terminals weight, make described CoMP scheduling of user terminals weight be greater than described non-CoMP scheduling of user terminals weight, wherein, 1≤n<N, N is all descending number of subframes of dispatching that can be used for downlink data transmission in the predetermined period that sends uplink detection reference signal at described CoMP user terminal,

Currently descendingly dispatch descending between the last time slot that sends uplink detection reference signal of subframe and described CoMP user terminal and dispatch number of subframes when being more than or equal to n and being less than N when described, be that described CoMP user terminal arranges CoMP scheduling of user terminals weight according to the second presetting method, make described CoMP scheduling of user terminals weight be less than described non-CoMP scheduling of user terminals weight.

12. device according to claim 11, is characterized in that, described the first presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant a, and wherein, a is greater than described non-CoMP scheduling of user terminals weight.

13. device according to claim 11, is characterized in that, described the first presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₁(m), f wherein ₁(m) be greater than described non-CoMP scheduling of user terminals weight, and make f ₁(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

14. device according to claim 11, is characterized in that, described the second presetting method comprises:

Described CoMP scheduling of user terminals weight is set to constant b, and wherein, b is more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight.

15. device according to claim 11, is characterized in that, described the second presetting method also comprises:

Described CoMP scheduling of user terminals weight is set to f ₂(m), wherein, f ₂(m) be more than or equal to 0 and be less than described non-CoMP scheduling of user terminals weight, and make f ₂(m) along with the described current descending subframe of dispatching sends the increase of the sequence number m in the predetermined period of uplink detection reference signal and reduces at described CoMP user terminal.

16. device according to claim 10, it is characterized in that, the described subelement that obtains, be multiplied by described initial priority value specifically for the described CoMP scheduling of user terminals weight by each CoMP user terminal, obtain the priority valve of each CoMP user terminal on described current descending scheduling unit.

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