CN103974291B - Cooperative multipoint transmission set option method and device, system - Google Patents

Abstract

The present invention discloses a coordinated multi-point transmission set selection method, device, and system. Each main transmission point sends reference signals from the candidate user equipment to the main transmission point and other transmission points according to each candidate user equipment in the main transmission point. The receiving strength is calculated by using the first algorithm to obtain the energy efficiency of each candidate user equipment in the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point; by using the second algorithm, the energy efficiency of the main transmission point is calculated respectively. The energy efficiency of the serving cell in the multiple coordinated multi-point transmission sets of the main transmission point; the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point is sent to the central node, so that the center The node uses the third algorithm to determine at least one CoMP transmission set, and sends the determined CoMP transmission set to the main transmission point corresponding to the determined CoMP transmission set; high system energy efficiency can be achieved.

Description

Coordinated multipoint transmission set selection method, device and system

technical field

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device, and system for selecting a coordinated multipoint transmission set.

Background technique

Coordinated Multi-Point transmission technology (English: Coordinated Multi-Point, referred to as CoMP) is an important method to effectively use interference signals and improve network performance, especially the CoMP technology of joint signal processing, which combines the signals sent and received by the base station in adjacent Sharing between base stations can make full use of adjacent base station signals, solve interference problems, and improve network performance at the same time.

In the CoMP technology, the key factor is the CoMP set selection, that is, which adjacent base stations are selected for Cooperative transmission. However, the existing CoMP set selection only determines the CoMP set based on the signal quality, strength, or SINR reported by the user equipment, without considering the additional signaling overhead caused by the coordination, such as , will increase the additional energy consumption brought by the signal processing on the base station side; the energy consumption of the backhaul used by the base stations for high-speed, low-delay, and low-error-rate transmission sharing information.

Therefore, the existing CoMP set selection may lead to the problem that the energy efficiency of the system is very low.

Contents of the invention

The invention provides a method, device and system for selecting a coordinated multi-point transmission set, which are used to solve the problem that the existing coordinated multi-point transmission set selection may lead to very low system energy efficiency.

In the first aspect, the present invention provides a method for selecting a coordinated multipoint transmission set, which is applied to a scenario when a cell cluster includes multiple transmission points, including:

Each main transmission point uses the first algorithm to calculate the received strength of the reference signal from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point. Energy efficiency of each candidate user equipment in the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

According to the energy efficiency of each candidate user equipment in the primary transmission point calculated in the multiple coordinated multi-point transmission sets of the primary transmission point, each primary transmission point uses a second algorithm to calculate respectively Obtain the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

Each of the main transmission points sends the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point to the central node, so that the central node according to each The energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by the main transmission point, using the third algorithm, at least one coordinated multi-point transmission set is determined, and the determined The coordinated multi-point transmission set is sent to the main transmission point corresponding to the determined coordinated multi-point transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

Based on the first aspect, in a first possible implementation manner, each primary transmission point transmits the information from the candidate user equipment to the primary transmission point according to each candidate user equipment in the primary transmission point Using the first algorithm to calculate the energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, using the reference signal reception strength of other transmission points, including:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculate the Throughput in multiple CoMP transmission sets of transmission points;

respectively calculating the total power consumption of multiple CoMP transmission sets of the main transmission point;

respectively dividing the throughput of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point by the total power consumption of the corresponding coordinated multi-point transmission set to obtain the The energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point.

Based on the first aspect and the first possible implementation manner of the first aspect, in a second possible implementation manner, each main transmission point is calculated according to each candidate user in the main transmission point The energy efficiency of the device in the multiple coordinated multi-point transmission sets of the main transmission point is calculated by using the second algorithm to obtain the multiple coordinated multi-point transmission sets of the serving cell of the main transmission point in the main transmission point Energy efficiency in , including:

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, the formula is used: Obtaining energy efficiencies of serving cells of the primary transmission point in multiple CoMP transmission sets of the primary transmission point respectively;

Wherein, n represents the main transmission point, q represents any _one of the multiple coordinated multi-point transmission sets of the main transmission point, and K1 represents multiple candidate user equipments in the main transmission point , k represents any candidate user equipment among the plurality of candidate user equipments, represents the energy efficiency of candidate user equipment k in the CoMP transmission set q, and ω _k represents the weight factor of candidate user equipment k in the primary transmission point.

In a second aspect, the present invention provides a method for selecting a coordinated multipoint transmission set, which is applied to a scenario when a cell cluster includes multiple transmission points, including:

The central node respectively receives the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, and the serving cell of the main transmission point is in the main transmission point. The energy efficiency in the multiple coordinated multi-point transmission sets of the transmission point is the candidate user equipment to the main transmission point and other transmissions respectively sent by the main transmission point according to each candidate user equipment in the main transmission point The reference signal reception strength of the point, using the first algorithm, respectively calculates the energy efficiency of each candidate user equipment in the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point; according to the calculated The energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point is calculated by using a second algorithm to obtain the energy efficiency of the serving cell of the primary transmission point in the Energy efficiency in multiple coordinated multipoint transmission sets for the primary transmission point;

According to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, use the third algorithm to determine at least one coordinated multi-point transmission set ;

Send the determined CoMP transmission set to the primary transmission point corresponding to the determined CoMP transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

Based on the second aspect, in a first possible implementation manner, the serving cell of the primary transmission point sent by each primary transmission point is in multiple coordinated multi-point transmission sets of the primary transmission point The energy efficiency of the third algorithm is used to determine at least one coordinated multi-point transmission set, including:

According to the energy efficiency of the serving cell of the main transmission point sent by each main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, the system energy efficiency formula is used: calculating the system energy efficiency of the cell cluster;

According to the system energy efficiency of the cell cluster, determine one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n; q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the CoMP transmission set q; Backhaul indicates the backhaul resource information from the central node to the main transmission point; Overlapping indicates whether the same transmission point is allowed to belong to different CoMPs at the same time A set of point transmissions for coordinated transmission; N _c represents a plurality of transmission points, including the main transmission point in the plurality of transmission points, n∈N _c ; M _n represents a plurality of coordinated multi-point transmissions of the main transmission point n set, the multiple coordinated multi-point transmission sets include the coordinated multi-point transmission set q, q∈M _n .

In the third aspect, the present invention provides a device for selecting a coordinated multipoint transmission set, which is located on the transmission point side and is applied to a scenario when a cell cluster includes multiple transmission points. When the transmission point is the main transmission point, the Said devices include:

The first calculation module is configured to use a first algorithm according to the received strength of reference signals from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculating the energy efficiency of each candidate user equipment in the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

The second calculation module is configured to use a second algorithm to respectively calculate the energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point according to the calculation Obtain the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

A sending module, configured to send the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point to a central node, so that the central node The energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point transmitted by point, using the third algorithm, at least one coordinated multi-point transmission set is determined, and the determined coordinated multi-point transmission set is used The multipoint transmission set is sent to the main transmission point corresponding to the determined coordinated multipoint transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

Based on the third aspect, in a first possible implementation manner, the first calculation module is specifically configured to:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculate the Throughput in multiple CoMP transmission sets of transmission points;

respectively calculating the total power consumption of multiple CoMP transmission sets of the main transmission point;

respectively dividing the throughput of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point by the total power consumption of the corresponding coordinated multi-point transmission set to obtain the The energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point.

Based on the third aspect and the first possible implementation manner of the third aspect, in a second possible implementation manner, the second computing module is specifically configured to:

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, the formula is used: Obtaining energy efficiencies of serving cells of the primary transmission point in multiple CoMP transmission sets of the primary transmission point respectively;

Wherein, n represents the main transmission point, q represents any _one of the multiple coordinated multi-point transmission sets of the main transmission point, and K1 represents multiple candidate user equipments in the main transmission point , k represents any candidate user equipment among the plurality of candidate user equipments, represents the energy efficiency of candidate user equipment k in the CoMP transmission set q, and ω _k represents the weight factor of candidate user equipment k in the primary transmission point.

In a fourth aspect, the present invention provides a coordinated multipoint transmission set selection device, which is located on the side of the central node and is applied to a scenario when a cell cluster includes multiple transmission points, including:

The receiving module is configured to separately receive the energy efficiency of the serving cell of the main transmission point in multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, and the serving cell of the main transmission point is in The energy efficiency in the multiple coordinated multi-point transmission sets of the primary transmission point is the energy efficiency from the candidate user equipment to the primary transmission point respectively sent by the primary transmission point according to each candidate user equipment in the primary transmission point and the reference signal reception strength of other transmission points, using the first algorithm to calculate the energy efficiency of each candidate user equipment in the main transmission point in multiple coordinated multi-point transmission sets of the main transmission point; according to the The calculated energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point is calculated by using the second algorithm to obtain the serving cell of the primary transmission point energy efficiency in a plurality of coordinated multi-point transmission sets of the primary transmission point;

The third calculation module is configured to use a third algorithm to at least determining a coordinated multipoint transmission set;

A sending module, configured to send the determined CoMP transmission set to the primary transmission point corresponding to the determined CoMP transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

Based on the fourth aspect, in a first possible implementation manner, the third computing module is specifically configured to:

According to the energy efficiency of the serving cell of the main transmission point sent by each main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, the system energy efficiency formula is used: calculating the system energy efficiency of the cell cluster;

According to the system energy efficiency of the cell cluster, determine one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n; q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the CoMP transmission set q; Backhaul indicates the backhaul resource information from the central node to the main transmission point; Overlapping indicates whether the same transmission point is allowed to belong to different CoMPs at the same time A set of point transmissions for coordinated transmission; N _c represents a plurality of transmission points, including the main transmission point in the plurality of transmission points, n∈N _c ; M _n represents a plurality of coordinated multi-point transmissions of the main transmission point n set, the multiple coordinated multi-point transmission sets include the coordinated multi-point transmission set q, q∈M _n .

In the fifth aspect, the present invention provides a coordinated multi-point transmission set selection system, which is applied to a scenario when a cell cluster includes multiple transmission points, including: multiple transmission points and a central node;

Any transmission point among the plurality of transmission points includes the coordinated multi-point transmission set selection device described in the third aspect;

The central node includes the apparatus for selecting a CoMP set according to the fourth aspect.

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectral efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of an application scenario of a CoMP set selection method provided by various embodiments of the present invention;

FIG. 2 is a schematic flowchart of a method for selecting a CoMP set provided by an embodiment of the present invention;

FIG. 3 is a system architecture diagram of the application of the CoMP set selection method provided by the embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for selecting a CoMP set provided by another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a CoMP set selection device provided by another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a transmission point provided by another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a coordinated multipoint transmission set selection device provided by another embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a central node provided by another embodiment of the present invention;

Fig. 9 is a schematic structural diagram of a CoMP set selection system provided by another embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The following embodiments of the present invention are applied to a scenario when a cell cluster includes multiple transmission points. FIG. 1 is a schematic diagram of an application scenario of a CoMP transmission set selection method provided by various embodiments of the present invention, as shown in FIG. 1 , Assume that the cell cluster is composed of 7 adjacent base stations (English: eNodeB, eNB for short), each base station is composed of three transmission points (English: TransmissionPoint, TP for short), and there are 21 transmission points in the cell cluster, and each transmission point governs A service cell; transmission points or base stations are connected through the X2 interface, and information can be transmitted to each other. At the same time, the transmission point or base station is connected to the core network through the S1 interface. The core network includes, for example, a Mobility Management Entity (English: Mobility Management Entity, MME for short), Serving Gateway (English: Serving-Gateway, S-GW for short); in the embodiment of the present invention, the central node (English: CentralUnit, CU for short) is located at the core network side, and is used to dynamically select a coordinated multipoint transmission set , the physical entity of the central node can be located in the mobility management entity or serving gateway, or can be an independent physical entity.

Fig. 2 is a schematic flowchart of a method for selecting a CoMP transmission set provided by an embodiment of the present invention. As shown in Fig. 2, the method for selecting a CoMP transmission set in this embodiment may include:

201. Each primary transmission point uses the first algorithm according to the received strength of reference signals sent by each candidate user equipment in the primary transmission point from the candidate user equipment to the primary transmission point and other transmission points, respectively Calculating the energy efficiency of each candidate user equipment in the primary transmission point in multiple CoMP transmission sets of the primary transmission point.

Wherein, the primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any of the serving cells of the primary transmission point. A user equipment; the multiple CoMP transmission sets of the primary transmission point respectively include at least the primary transmission point.

Figure 3 is a system architecture diagram for the application of the CoMP transmission set selection method provided by the embodiment of the present invention, as shown in Figure 3, assuming that among the 21 transmission points shown in Figure 1, TP-1 is selected as the main transmission point , the adjacent transmission points of TP-1 are TP-2, TP-3, TP-4, TP-5, TP-6, TP-7, set K ₁ candidate user equipments in the serving cell of TP-1, set Multiple CoMP transmission sets including TP-1, respectively {TP-1}, {TP-1, TP-4}, {TP-1, TP-5} and {TP-1, TP-4, TP-5}.

In one embodiment of the present invention, step 101 includes:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculate the Throughput in multiple CoMP transmission sets of transmission points;

respectively calculating the total power consumption of multiple CoMP transmission sets of the main transmission point;

respectively dividing the throughput of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point by the total power consumption of the corresponding coordinated multi-point transmission set to obtain the The energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point.

During specific implementation, any user equipment k in the K+ ₁ candidate user equipments is taken as an example for illustration:

First, user equipment k detects that the reference signal received strength from user equipment k to TP-1 is RSRP _TP-1 , the reference signal received strength from user equipment k to TP-4 is RSRP _TP-4 , and the reference signal received strength from user equipment k to TP-5 is RSRP TP-4 . The received reference signal strength is RSRP _TP-5 , and then user equipment k sends RSRP _TP-1 , RSRP _TP-4 , and RSRP _TP-5 to TP-1 respectively;

Secondly, TP-1 uses the Shannon formula to calculate the user equipment k in {TP-1}, {TP-1, TP-4}, {TP-1, TP-5} and {TP-1, TP-4, TP -5} The throughput in the set, assuming that when the CoMP set {TP-1, TP-4} serves user equipment k, the reachability of user equipment k in the set {TP-1, TP-4} Throughput is:

Among them, the received power of the transmission point TP-1 or TP-4 of the set {TP-1, TP-4} is used as the useful signal power, and the power transmitted by the user equipment k but not in the set {TP-1, TP-4} The received power of the transmission point TP-5 is regarded as the interference to the useful signal; B represents the system bandwidth, and N ₀ represents the noise power spectral density.

Again, TP-1 uses the formula: P _q =Q(P _BS +P _sp )+P _bh to calculate the total power consumption of the CoMP transmission set {TP-1, TP-4}, where Q is the CoMP The number of base stations in the transmission set {TP-1, TP-4}, P _BS =P ₀ +Δ _p P _Tx

Among them, P _tx <P _tx-max represents the air interface transmission power of the transmission point, It is a preset parameter greater than 0 related to the transmission power of the air interface. P ₀ represents the static power of the transmission point that has nothing to do with the transmission power; Q _s represents the number of backhauls between two transmission points participating in the coordinated multi-point transmission set, c _link Indicates the maximum capacity of the backhaul link between two transmission points, c _bh indicates the current information capacity that needs to be transmitted between two transmission points, and P _link indicates the power consumption when the backhaul transmission of c _link information capacity between two transmission points ;p _sp represents the basic power consumption value (constant) of signaling processing, α _csi and α _mimo are proportional factors (constant), Q _csi represents the number of base stations participating in the collection of channel state information in the coordinated multi-point transmission set, and Q _mimo represents the cooperative The number of base stations participating in the joint transmission CoMP algorithm (English: Joint-Transmission CoMP, JT-CoMP for short) in the multipoint transmission set.

Finally, divide the achievable throughput of user equipment k in the CoMP set {TP-1, TP-4} by the total power consumption of the CoMP set {TP-1, TP-4} to obtain the user Energy efficiency of device k in CoMP set {TP-1, TP-4}

Similarly, it can be obtained that each of the K ₁ candidate user equipments is in {TP-1}, {TP-1, TP-4}, {TP-1, TP-5} and {TP-1, TP-5} respectively. Energy efficiency in each CoMP transmission set in TP-4, TP-5}.

202. Each primary transmission point uses a second algorithm according to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, The energy efficiencies of the serving cells of the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point are respectively calculated to obtain.

In one embodiment of the present invention, step 102 includes:

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, the formula is used: Obtaining energy efficiencies of serving cells of the primary transmission point in multiple CoMP transmission sets of the primary transmission point respectively;

Wherein, n represents the main transmission point, q represents any _one of the multiple coordinated multi-point transmission sets of the main transmission point, and K1 represents multiple candidate user equipments in the main transmission point , k represents any candidate user equipment among the plurality of candidate user equipments, represents the energy efficiency of candidate user equipment k in the CoMP transmission set q, and ωk represents the weight factor of candidate user equipment k in the primary transmission point.

During specific implementation, as shown in Figure 3, the K ₁ candidate user equipments in TP-1 can be placed in {TP-1}, {TP-1, TP-4}, {TP-1, TP-5} respectively and the energy efficiency in {TP-1, TP-4, TP-5} take the weighted average, that is Get the energy of TP-1 serving cell in {TP-1}, {TP-1, TP-4}, {TP-1, TP-5} and {TP-1, TP-4, TP-5} respectively efficiency.

203. Each master transmission point sends the energy efficiency of the serving cell of the master transmission point in multiple coordinated multi-point transmission sets of the master transmission point to the central node, so that the central node according to the The energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, using the third algorithm, at least one coordinated multi-point transmission set is determined, and the The determined CoMP transmission set is sent to the primary transmission point corresponding to the determined CoMP transmission set.

During specific implementation, the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point is sent to the central node through the S1 interface.

The central node uses the system energy efficiency formula according to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point: calculating the system energy efficiency of the cell cluster;

According to the system energy efficiency of the cell cluster, determine one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n; q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the CoMP transmission set q; Backhaul indicates the backhaul resource information from the central node to the main transmission point; Overlapping indicates whether the same transmission point is allowed to belong to different CoMPs at the same time A set of point transmissions for coordinated transmission; N _c represents a plurality of transmission points, including the main transmission point in the plurality of transmission points, n∈N _c ; M _n represents a plurality of coordinated multi-point transmissions of the main transmission point n set, the multiple coordinated multi-point transmission sets include the coordinated multi-point transmission set q, q∈M _n .

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectral efficiency.

FIG. 4 is a schematic flowchart of a method for selecting a CoMP set provided by another embodiment of the present invention; as shown in FIG. 4 , it includes:

401. The central node respectively receives the energy efficiency of the serving cell of the main transmission point in multiple CoMP transmission sets of the main transmission point sent by each main transmission point.

During specific implementation, the central node respectively receives the energy efficiency of the serving cell of the main transmission point in multiple CoMP transmission sets of the main transmission point sent by each main transmission point through the S1 interface.

Wherein, the energy efficiency of the serving cell of the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point is the energy efficiency transmitted by the primary transmission point according to each candidate user equipment in the primary transmission point The reference signal reception strengths from the candidate user equipment to the main transmission point and other transmission points are calculated by using a first algorithm to respectively calculate the multiple coordination of each candidate user equipment in the main transmission point energy efficiency in a multipoint transmission set; according to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multipoint transmission sets of the primary transmission point, using a second algorithm, The energy efficiencies of the serving cells of the primary transmission point in the multiple CoMP transmission sets of the primary transmission point are calculated respectively; for details, refer to the relevant description in the embodiment shown in FIG. 1 , and details are not repeated here.

Wherein, the primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any of the serving cells of the primary transmission point. A user equipment; the multiple CoMP transmission sets of the primary transmission point respectively include at least the primary transmission point.

402. According to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, use a third algorithm to determine at least one coordinated multi-point Transfer collection.

In one embodiment of the present invention, step 402 includes:

According to the energy efficiency of the serving cell of the main transmission point sent by each main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, the system energy efficiency formula is used: Calculating the system energy efficiency of the cell cluster; in specific implementation, the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point can be obtained by taking the weighted average maximum value to obtain The system energy efficiency of the cell cluster, namely:

According to the system energy efficiency of the cell cluster, one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal is determined as a set for performing coordinated multi-point transmission in the cell cluster; during specific implementation, For example, a system energy efficiency threshold can be set, and when the system energy efficiency of the cell cluster calculated above is greater than the set system energy efficiency threshold, it is determined that the system energy efficiency of the cell cluster is optimal, and at the same time, the system energy efficiency of the cell cluster When the energy efficiency is optimal, the corresponding one or more coordinated multi-point transmission sets are determined as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n, and the weight factor is used to represent the priority of participating in the coordinated multi-point transmission of the cell served by the transmission point;

q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the coordinated multi-point transmission set q;

Backhaul represents the backhaul resource information from the central node to the main transmission point, and is used to indicate whether there are enough backhaul resources available for coordinated multi-point transmission. It can take values of 0 and 1, and 0 indicates that there are not enough backhaul resources available Use, 1 means there are enough backhaul resources available;

Overlapping indicates whether the same transmission point is allowed to belong to different CoMP transmission sets at the same time for cooperative transmission. It can take values 0 and 1. 0 means that the same transmission point is not allowed to belong to different CoMP transmission sets at the same time for cooperative transmission. 1 Indicates that the same transmission point is allowed to belong to different CoMP transmission sets at the same time for cooperative transmission;

N _c represents a plurality of transmission points, the plurality of transmission points include the main transmission point, n∈N _c ;

M _n represents multiple CoMP transmission sets of the main transmission point n, and the multiple CoMP transmission sets include the CoMP transmission set q, q∈M _n .

403. Send the determined CoMP transmission set to the primary transmission point corresponding to the determined CoMP transmission set.

During specific implementation, the central node sends the determined CoMP transmission set to the main transmission point corresponding to the determined CoMP transmission set through the S1 interface.

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectral efficiency.

FIG. 5 is a schematic structural diagram of a coordinated multipoint transmission set selection device provided by another embodiment of the present invention; it is located on the transmission point side, and when the transmission point is the main transmission point, as shown in FIG. 5 , the device includes:

The first calculation module 51 is configured to use a first algorithm according to the received strength of reference signals from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculating the energy efficiency of each candidate user equipment in the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

The second calculation module 52 is configured to use a second algorithm according to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, respectively Calculate and obtain the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point;

The sending module 53 is configured to send the energy efficiency of the serving cell of the main transmission point in multiple coordinated multi-point transmission sets of the main transmission point to the central node, so that the central node The energy efficiency of the serving cell of the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point sent by the transmission point is determined by using a third algorithm at least one coordinated multi-point transmission set, and the determined Sending the coordinated multi-point transmission set to the main transmission point corresponding to the determined coordinated multi-point transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

For example, the first calculation module 51 is specifically used for:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculate the Throughput in multiple CoMP transmission sets of transmission points;

respectively calculating the total power consumption of multiple CoMP transmission sets of the main transmission point;

respectively dividing the throughput of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point by the total power consumption of the corresponding coordinated multi-point transmission set to obtain the The energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point.

For example, the second calculating module 52 is specifically used for:

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, the formula is used: Obtaining energy efficiencies of serving cells of the primary transmission point in multiple CoMP transmission sets of the primary transmission point respectively;

Wherein, n represents the main transmission point, q represents any _one of the multiple coordinated multi-point transmission sets of the main transmission point, and K1 represents multiple candidate user equipments in the main transmission point , k represents any candidate user equipment among the plurality of candidate user equipments, represents the energy efficiency of candidate user equipment k in the CoMP transmission set q, and ω _k represents the weight factor of candidate user equipment k in the primary transmission point.

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectrum efficiency.

Fig. 6 is a schematic structural diagram of a transmission point provided by another embodiment of the present invention; as shown in Fig. 6, the transmission point includes a processor, a memory, and a communication bus, and the processor is connected to the memory through the communication bus, so Instructions for implementing the coordinated multipoint transmission set selection method are stored in the memory; further, the transmission point also includes a communication interface through which it communicates with other network element devices (such as user equipment and a central node).

When the transmission point is the main transmission point, when the processor of the transmission point calls the instruction in the memory, the following steps may be performed:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, use the first algorithm to calculate the The energy efficiency of each candidate user equipment in multiple coordinated multi-point transmission sets of the primary transmission point;

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point, use the second algorithm to calculate respectively the energy efficiency of the primary transmission point energy efficiency of the serving cell in multiple CoMP transmission sets of the primary transmission point;

sending the energy efficiency of the serving cell of the primary transmission point in multiple CoMP transmission sets of the primary transmission point to the central node, so that the central node can use the For the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, use the third algorithm to determine at least one coordinated multi-point transmission set, and send the determined coordinated multi-point transmission set Give the primary transmission point corresponding to the determined CoMP transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

In the first implementation manner, each primary transmission point receives reference signals from the candidate user equipment to the primary transmission point and other transmission points respectively sent by each candidate user equipment in the primary transmission point Intensity, using a first algorithm to separately calculate the energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, including:

According to the reference signal received strength from the candidate user equipment to the main transmission point and other transmission points respectively sent by each candidate user equipment in the main transmission point, respectively calculate the Throughput in multiple CoMP transmission sets of transmission points;

respectively calculating the total power consumption of multiple CoMP transmission sets of the main transmission point;

respectively dividing the throughput of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point by the total power consumption of the corresponding coordinated multi-point transmission set to obtain the The energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point.

In the second implementation manner, each primary transmission point is based on the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point , using the second algorithm to calculate and obtain the energy efficiency of the serving cell of the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, including:

According to the calculated energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point, the formula is used: Obtaining energy efficiencies of serving cells of the primary transmission point in multiple CoMP transmission sets of the primary transmission point respectively;

Wherein, n represents the main transmission point, q represents any _one of the multiple coordinated multi-point transmission sets of the main transmission point, and K1 represents multiple candidate user equipments in the main transmission point , k represents any candidate user equipment among the plurality of candidate user equipments, represents the energy efficiency of candidate user equipment k in the CoMP transmission set q, and ω _k represents the weight factor of candidate user equipment k in the primary transmission point.

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectral efficiency.

FIG. 7 is a schematic structural diagram of a coordinated multipoint transmission set selection device provided by another embodiment of the present invention; it is located on the side of the central node, as shown in FIG. 7 , including:

The receiving module 71 is configured to separately receive the energy efficiency of the serving cell of the main transmission point in multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, and the serving cell of the main transmission point The energy efficiency in the multiple coordinated multi-point transmission sets of the main transmission point is the energy efficiency from the candidate user equipment to the main transmission point respectively sent by the main transmission point according to each candidate user equipment in the main transmission point The reference signal reception strength of the point and other transmission points, using the first algorithm, respectively calculate the energy efficiency of each candidate user equipment in the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point; according to The calculated energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point is calculated using a second algorithm to obtain the service efficiency of the primary transmission point Energy efficiency of a cell in multiple CoMP transmission sets of the primary transmission point;

The third calculation module 72 is configured to use the third algorithm according to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, at least one coordinated multipoint transmission set is determined;

A sending module 73, configured to send the determined CoMP transmission set to the primary transmission point corresponding to the determined CoMP transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

For example, the third calculation module 72 is specifically used for:

According to the energy efficiency of the serving cell of the main transmission point sent by each main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, the system energy efficiency formula is used: calculating the system energy efficiency of the cell cluster;

According to the system energy efficiency of the cell cluster, determine one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n; q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the CoMP transmission set q; Backhaul indicates the backhaul resource information from the central node to the main transmission point; Overlapping indicates whether the same transmission point is allowed to belong to different CoMPs at the same time A set of point transmissions for coordinated transmission; N _c represents a plurality of transmission points, including the main transmission point in the plurality of transmission points, n∈N _c ; M _n represents a plurality of coordinated multi-point transmissions of the main transmission point n set, the multiple coordinated multi-point transmission sets include the coordinated multi-point transmission set q, q∈M _n .

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectrum efficiency.

Fig. 8 is a schematic structural diagram of a central node provided by another embodiment of the present invention; as shown in Fig. 8, the central node includes a processor, a memory, and a communication bus, and the processor is connected to the memory through the communication bus, so Instructions for realizing the method for selecting a coordinated multipoint transmission set are stored in the memory; further, the central node also includes a communication interface through which it communicates with other network element devices (such as the main transmission point).

When the processor calls the instructions in the memory, the following steps can be performed:

Respectively receive the energy efficiency of the serving cell of the main transmission point in multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, and the serving cell of the main transmission point is in the energy efficiency of the main transmission point The energy efficiency in the multiple coordinated multi-point transmission sets is the energy efficiency of the candidate user equipment to the main transmission point and other transmission points respectively sent by the main transmission point according to each candidate user equipment in the main transmission point Using the first algorithm with reference to the received signal strength, respectively calculating the energy efficiency of each candidate user equipment in the primary transmission point in multiple coordinated multi-point transmission sets of the primary transmission point; according to the calculated The energy efficiency of each candidate user equipment in the primary transmission point in the multiple coordinated multi-point transmission sets of the primary transmission point is calculated by using the second algorithm to obtain the energy efficiency of the serving cell of the primary transmission point in the primary transmission point Energy efficiency in multiple coordinated multipoint transmission sets of points;

According to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, use the third algorithm to determine at least one coordinated multi-point transmission set ;

Send the determined CoMP transmission set to the primary transmission point corresponding to the determined CoMP transmission set;

The primary transmission point is any transmission point among multiple transmission points included in the cell cluster, and each candidate user equipment in the primary transmission point is any user in a serving cell of the primary transmission point A device; the multiple coordinated multi-point transmission sets of the primary transmission point respectively include at least the primary transmission point.

In the first implementation manner, according to the energy efficiency of the serving cell of the main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point sent by each main transmission point, the third Algorithms to determine at least one set of coordinated multipoint transmissions, comprising:

According to the energy efficiency of the serving cell of the main transmission point sent by each main transmission point in the multiple coordinated multi-point transmission sets of the main transmission point, the system energy efficiency formula is used: calculating the system energy efficiency of the cell cluster;

According to the system energy efficiency of the cell cluster, determine one or more coordinated multi-point transmission sets corresponding to when the system energy efficiency of the cell cluster is optimal as the set for performing coordinated multi-point transmission in the cell cluster;

Wherein, W _n represents the weight factor of the main transmission point n; q represents any coordinated multi-point transmission set in the plurality of coordinated multi-point transmission sets of the main transmission point n; Indicates the energy efficiency of the main transmission point n in the CoMP transmission set q; Backhaul indicates the backhaul resource information from the central node to the main transmission point; Overlapping indicates whether the same transmission point is allowed to belong to different CoMPs at the same time A set of point transmissions for coordinated transmission; N _c represents a plurality of transmission points, including the main transmission point in the plurality of transmission points, n∈N _c ; M _n represents a plurality of coordinated multi-point transmissions of the main transmission point n set, the multiple coordinated multi-point transmission sets include the coordinated multi-point transmission set q, q∈M _n .

In the embodiment of the present invention, when calculating the energy efficiency of each candidate user equipment in each primary transmission point in multiple CoMP transmission sets of the primary transmission point, not only the The reference signal reception strength of the candidate user equipment to the main transmission point and other transmission points, also taking into account the total power consumption of each coordinated multi-point transmission set in the multiple coordinated multi-point transmission sets of the main transmission point, that is, considering The impact of extra energy consumption brought by multipoint transmission aggregation on system performance, therefore, the embodiments of the present invention can achieve high system energy efficiency while improving system throughput and system spectral efficiency.

Fig. 9 is a schematic structural diagram of a CoMP set selection system provided by another embodiment of the present invention. As shown in Figure 9, it includes a plurality of transmission points 91 and a central node 92;

Wherein, the central node 92 includes the CoMP set selection device described in the embodiment shown in FIG. 7 , and for specific content, refer to the relevant description in the CoMP set selection device described in the embodiment shown in FIG. 7 , No longer.

When any transmission point among the plurality of transmission points 91 is the main transmission point, it includes the coordinated multi-point transmission set selection device described in the embodiment shown in FIG. Relevant descriptions in the device for selecting a multipoint transmission set will not be repeated here.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium in the form of codes. The above codes are stored in a computer-readable storage medium, and include several instructions for causing a processor or a hardware circuit to execute some or all steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: a miniature high-capacity mobile storage disk without a physical drive, a mobile hard disk, a read-only memory (English: Read-Only Memory, ROM for short), and a random access memory (English: Random Access Memory). Access Memory, referred to as RAM), magnetic disk or optical disk and other media that can store program code.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims (11)

1. a kind of cooperative multipoint transmission set option method, applied in the scene when cell cluster includes multiple transmission point, It is characterised in that it includes：

The candidate user that each candidate user devices of each main transfer point in the main transfer point are sent respectively Equipment, using the first algorithm, calculates the master respectively to the reference signal receiving intensity of the main transfer point He other transfer points Energy efficiency of each candidate user devices in multiple cooperative multipoint transmission set of the main transfer point in transfer point；

Each described main transfer point is according to each candidate user devices in the main transfer point of the calculating in the master Energy efficiency in multiple cooperative multipoint transmission set of transfer point, using the second algorithm, the main transmission is calculated respectively Energy efficiency of the serving cell of point in multiple cooperative multipoint transmission set of the main transfer point；

Each described main transfer point passes multiple coordinate multipoints of the serving cell of the main transfer point in the main transfer point Energy efficiency in defeated set is sent to Centroid, so that what the Centroid was sent according to each described main transfer point Energy efficiency of the serving cell of the main transfer point in multiple cooperative multipoint transmission set of the main transfer point, utilize Three algorithms, a cooperative multipoint transmission set is at least determined, the cooperative multipoint transmission set of the determination is sent to described true Main transfer point corresponding to fixed cooperative multipoint transmission set；

The main transfer point is any transfer point in the multiple transmission point that includes of the cell cluster, in the main transfer point Each candidate user devices are any user equipment in the serving cell of the main transfer point；Multiple associations of the main transfer point Make to comprise at least the main transfer point in multicast communication set respectively.

2. according to the method for claim 1, it is characterised in that each described main transfer point is according in the main transfer point The candidate user devices that send respectively of each candidate user devices to the main transfer point and other transfer points reference Signal receiving strength, using the first algorithm, each candidate user devices in the main transfer point are calculated respectively in the main biography Energy efficiency in multiple cooperative multipoint transmission set of defeated point, including：

The candidate user devices that each candidate user devices in the main transfer point are sent respectively are to the main biography The reference signal receiving intensity of defeated point and other transfer points, each candidate user devices are calculated respectively in the main transfer point Multiple cooperative multipoint transmission set in handling capacity；

The total power consumption of multiple cooperative multipoint transmission set of the main transfer point is calculated respectively；

Respectively by each candidate user devices in the main transfer point the main transfer point multiple cooperative multipoint transmission collection The total power consumption of handling capacity divided by corresponding cooperative multipoint transmission set in conjunction, respectively obtains each time in the main transfer point Select energy efficiency of the user equipment in multiple cooperative multipoint transmission set of the main transfer point.

3. method according to claim 1 or 2, it is characterised in that each described main transfer point is according to the calculating Energy of each candidate user devices in multiple cooperative multipoint transmission set of the main transfer point in the main transfer point Efficiency, using the second algorithm, multiple cooperations of the serving cell in the main transfer point of the main transfer point are calculated respectively Energy efficiency in multicast communication set, including：

Each candidate user devices in the main transfer point of the calculating are more in multiple cooperations of the main transfer point Energy efficiency in point transmission set, utilizes formula：Respectively obtain the clothes of the main transfer point Energy efficiency of the cell of being engaged in multiple cooperative multipoint transmission set of the main transfer point；

Wherein, n represents the main transfer point, and q represents any association in multiple cooperative multipoint transmission set of the main transfer point Make multicast communication set, K_nMultiple candidate user devices in the main transfer point are represented, k represents that the multiple candidate user is set Any candidate user devices in standby,Represent energy efficiencies of the candidate user devices k in cooperative multipoint transmission set q, ω_k Represent weight factors of the candidate user devices k in the main transfer point.

4. a kind of cooperative multipoint transmission set option method, applied in the scene when cell cluster includes multiple transmission point, It is characterised in that it includes：

Centroid receives the serving cell for the main transfer point that each main transfer point is sent in the main transfer point respectively Multiple cooperative multipoint transmission set in energy efficiency, the serving cell of the main transfer point is in the multiple of the main transfer point Energy efficiency in cooperative multipoint transmission set sets for each candidate user of the main transfer point in the main transfer point The candidate user devices that back-up is not sent utilize to the reference signal receiving intensity of the main transfer point He other transfer points First algorithm, multiple coordinate multipoints of each candidate user devices in the main transfer point in the main transfer point are calculated respectively Energy efficiency in transmission set；Each candidate user devices in the main transfer point of the calculating are in the main biography Energy efficiency in multiple cooperative multipoint transmission set of defeated point, using the second algorithm, the main transfer point is calculated respectively Energy efficiency of the serving cell in multiple cooperative multipoint transmission set of the main transfer point；

Multiple associations of the serving cell of the main transfer point sent according to each described main transfer point in the main transfer point Make the energy efficiency in multicast communication set, using third algorithm, at least determine a cooperative multipoint transmission set；

The cooperative multipoint transmission set of the determination is sent to main transmission corresponding to the cooperative multipoint transmission set of the determination Point；

The main transfer point is any transfer point in the multiple transmission point that includes of the cell cluster, in the main transfer point Each candidate user devices are any user equipment in the serving cell of the main transfer point；Multiple associations of the main transfer point Make to comprise at least the main transfer point in multicast communication set respectively.

5. according to the method for claim 4, it is characterised in that each main transfer point is sent described described in the basis Energy efficiency of the serving cell of main transfer point in multiple cooperative multipoint transmission set of the main transfer point, utilizes the three ways of calculating Method, a cooperative multipoint transmission set is at least determined, including：

Multiple coordinate multipoints of the serving cell of the main transfer point sent according to each described main transfer point in the main transfer point Energy efficiency in transmission set, utilizes system energy efficiency formula： Calculate the system energy efficiency of the cell cluster；

According to the system energy efficiency of the cell cluster, by the system energy efficiency of the cell cluster it is optimal when corresponding one or more cooperate Multicast communication set is defined as carrying out the set of cooperative multipoint transmission in the cell cluster；

Wherein, W_nRepresent the weight factor of the main transfer point n；Q represents multiple cooperative multipoint transmission collection of the main transfer point n Any cooperative multipoint transmission set in conjunction；Represent energy dose-effects of the main transfer point n in cooperative multipoint transmission set q Rate；Backhaul represents the Centroid to the backhaul resources information of the main transfer point；Overlapping indicates whether to permit Perhaps the cooperative multipoint transmission set that same transfer point belongs to different simultaneously carries out cooperation transmission；N_cRepresent multiple transmission point, institute Stating multiple transmission point includes the main transfer point, n ∈ N_c；M_nRepresent multiple cooperative multipoint transmission collection of the main transfer point n Close, the multiple cooperative multipoint transmission set includes cooperative multipoint transmission set q, the q ∈ M_n。

6. a kind of cooperative multipoint transmission Resource selection device, positioned at transfer point side, include multiple transmission applied to when cell cluster In scene during point, it is characterised in that when the transfer point is main transfer point, described device includes：

First computing module, used for the candidate that each candidate user devices in the main transfer point are sent respectively Family equipment to the main transfer point He other transfer points reference signal receiving intensity, using the first algorithm, calculate respectively described in Energy efficiency of each candidate user devices in multiple cooperative multipoint transmission set of the main transfer point in main transfer point；

Second computing module, for each candidate user devices in the main transfer point according to the calculating in the main biography Energy efficiency in multiple cooperative multipoint transmission set of defeated point, using the second algorithm, the main transfer point is calculated respectively Energy efficiency of the serving cell in multiple cooperative multipoint transmission set of the main transfer point；

Sending module, for by the serving cell of the main transfer point the main transfer point multiple cooperative multipoint transmission set In energy efficiency be sent to Centroid so that the main transmission that the Centroid is sent according to each main transfer point Energy efficiency of the serving cell in multiple cooperative multipoint transmission set of the main transfer point of point, using third algorithm, extremely One cooperative multipoint transmission set of determination, the cooperation that the cooperative multipoint transmission set of the determination is sent to the determination are more less Main transfer point corresponding to point transmission set；

The main transfer point is any transfer point in the multiple transmission point that includes of the cell cluster, in the main transfer point Each candidate user devices are any user equipment in the serving cell of the main transfer point；Multiple associations of the main transfer point Make to comprise at least the main transfer point in multicast communication set respectively.

7. device according to claim 6, it is characterised in that first computing module is specifically used for：

The candidate user devices that each candidate user devices in the main transfer point are sent respectively are to the main biography The reference signal receiving intensity of defeated point and other transfer points, each candidate user devices are calculated respectively in the main transfer point Multiple cooperative multipoint transmission set in handling capacity；

The total power consumption of multiple cooperative multipoint transmission set of the main transfer point is calculated respectively；

Respectively by each candidate user devices in the main transfer point the main transfer point multiple cooperative multipoint transmission collection The total power consumption of handling capacity divided by corresponding cooperative multipoint transmission set in conjunction, respectively obtains each time in the main transfer point Select energy efficiency of the user equipment in multiple cooperative multipoint transmission set of the main transfer point.

8. the device according to claim 6 or 7, it is characterised in that second computing module is specifically used for：

Each candidate user devices in the main transfer point of the calculating are more in multiple cooperations of the main transfer point Energy efficiency in point transmission set, utilizes formula：Respectively obtain the clothes of the main transfer point Energy efficiency of the cell of being engaged in multiple cooperative multipoint transmission set of the main transfer point；

Wherein, n represents the main transfer point, and q represents any association in multiple cooperative multipoint transmission set of the main transfer point Make multicast communication set, K_nMultiple candidate user devices in the main transfer point are represented, k represents that the multiple candidate user is set Any candidate user devices in standby,Represent energy efficiencies of the candidate user devices k in cooperative multipoint transmission set q, ω_k Represent weight factors of the candidate user devices k in the main transfer point.

9. a kind of cooperative multipoint transmission Resource selection device, positioned at Centroid side, include multiple biographies applied to when cell cluster In scene at defeated, it is characterised in that including：

Receiving module, the serving cell of the main transfer point sent for receiving each main transfer point respectively is in the main biography Energy efficiency in multiple cooperative multipoint transmission set of defeated point, the serving cell of the main transfer point is in the main transfer point Energy efficiency in multiple cooperative multipoint transmission set is that each candidate of the main transfer point in the main transfer point uses The candidate user devices that family equipment is sent respectively to the main transfer point He other transfer points reference signal receiving intensity, Using the first algorithm, multiple cooperations of each candidate user devices in the main transfer point in the main transfer point are calculated respectively Energy efficiency in multicast communication set；Each candidate user devices in the main transfer point of the calculating are described Energy efficiency in multiple cooperative multipoint transmission set of main transfer point, using the second algorithm, the main biography is calculated respectively Energy efficiency of the serving cell of defeated point in multiple cooperative multipoint transmission set of the main transfer point；

3rd computing module, the serving cell for the main transfer point according to each main transfer point transmission is described Energy efficiency in multiple cooperative multipoint transmission set of main transfer point, using third algorithm, at least determine a coordinate multipoint Transmission set；

Sending module, for the cooperative multipoint transmission set of the determination to be sent to the cooperative multipoint transmission set of the determination Corresponding main transfer point；

The main transfer point is any transfer point in the multiple transmission point that includes of the cell cluster, in the main transfer point Each candidate user devices are any user equipment in the serving cell of the main transfer point；Multiple associations of the main transfer point Make to comprise at least the main transfer point in multicast communication set respectively.

10. device according to claim 9, it is characterised in that the 3rd computing module is specifically used for：

The serving cell of the main transfer point sent according to each described main transfer point is more in multiple cooperations of the main transfer point Energy efficiency in point transmission set, utilizes system energy efficiency formula： Calculate the system energy efficiency of the cell cluster；

According to the system energy efficiency of the cell cluster, by the system energy efficiency of the cell cluster it is optimal when corresponding one or more cooperate Multicast communication set is defined as carrying out the set of cooperative multipoint transmission in the cell cluster；

Wherein, W_nRepresent the weight factor of the main transfer point n；Q represents multiple cooperative multipoint transmission collection of the main transfer point n Any cooperative multipoint transmission set in conjunction；Represent energy dose-effects of the main transfer point n in cooperative multipoint transmission set q Rate；Backhaul represents the Centroid to the backhaul resources information of the main transfer point；Overlapping indicates whether to permit Perhaps the cooperative multipoint transmission set that same transfer point belongs to different simultaneously carries out cooperation transmission；N_cRepresent multiple transmission point, institute Stating multiple transmission point includes the main transfer point, n ∈ N_c；M_nRepresent multiple cooperative multipoint transmission collection of the main transfer point n Close, the multiple cooperative multipoint transmission set includes cooperative multipoint transmission set q, the q ∈ M_n。

11. a kind of cooperative multipoint transmission Resource selection system, applied in the scene when cell cluster includes multiple transmission point, It is characterised in that it includes：Multiple transmission point and Centroid；

Any transfer point in the multiple transfer point includes the cooperative multipoint transmission set as described in claim any one of 6-8 Selection device；

The Centroid includes the cooperative multipoint transmission Resource selection device as described in claim any one of 9-10.