CN101873671A

CN101873671A - Method, system and device for determining CoMP participating cells

Info

Publication number: CN101873671A
Application number: CN200910082640A
Authority: CN
Inventors: 谌丽; 彦楠; 赵毅
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2009-04-23
Filing date: 2009-04-23
Publication date: 2010-10-27
Anticipated expiration: 2029-04-23
Also published as: CN101873671B

Abstract

The invention relates to the wireless communication technology, in particular to a method, a system and a device for determining CoMP participating cells for solving the problem of large amount of signaling overhead required for informing a user terminal of cell identifier of each cell in the cells participating in the CoMP when an LTE-A system performs the CoMP in the prior art. The method of the embodiment of the invention comprises the following steps of: sending the cell identifier of each cell in a determined measurement cell basic set to a terminal through a network side, determining a CoMP participating cell set in the measurement cell basic set, determining index information corresponding to each cell identifier in the CoMP participating cell set, and sending the determined index information to the terminal to indicate the terminal to determine CoMP participating cell identifier from the measurement cell basic set according to the received index information. The method of the embodiment of the invention can reduce the signaling overhead and improve the utilization rate of system resources.

Description

A kind of mthods, systems and devices of sub-district of definite CoMP participating

Technical field

The present invention relates to wireless communication technology, the mthods, systems and devices of the sub-district of particularly a kind of definite CoMP participating (Coordinatedmulti-point, coordinate multipoint).

Background technology

The covering that can increase high data rate by transmission and the reception technique of CoMP in LTE-A (Long Term Evolution-Advanced, the long-term evolution upgrading) system, thus improve the throughput of cell edge and/or increase throughput of system.

So-called CoMP is meant the collaborative participation of a plurality of transmission points (promptly belonging to the different districts of one or more evolution base stations) that separate on the geographical position transmitting and receive data to subscriber equipment (UE).

The CoMP technology is divided into descending CoMP and up CoMP.Descending CoMP is meant that subscriber equipment need measure or handle the downstream signal or the data of a plurality of sub-districts; Up CoMP is meant that a plurality of sub-districts receive the upstream data of same subscriber equipment, and merges and handle decoding.

Descending CoMP is divided into Combined Treatment (JP, Joint Processing) and combined dispatching (CS, Cooperating Scheduling).Under the Combined Treatment mode, have a plurality of sub-districts and participate in downlink data transmission, many cell transmission mode is called joint transmission (Joint Transmission) again, and single cell transmission mode is called dynamic cell again and selects (Dynamic Cell Selection); Under the combined dispatching mode, have only the sub-district at subscriber equipment place subscriber equipment is dispatched and to be transmitted, other minizones are disturbed by information interaction and are avoided and eliminate.As shown in Figure 1, in the CoMP technology schematic diagram, three sub-districts are to terminal joint transmission data.

At present, when carrying out CoMP in the LTE-A system, need be with the cell notification user terminal of CoMP participating, because the cell ID of each sub-district can take more bit, so during with the cell notification user terminal of CoMP participating, need a large amount of signaling consumptions.

Summary of the invention

The embodiment of the invention provides the mthods, systems and devices of the sub-district of a kind of definite participation COMP, in order to solve exist in the prior art carry out CoMP in the LTE-A system time, because need be, thereby need the problem of a large amount of signaling consumptions with the cell ID informing user terminal of each sub-district in the sub-district of CoMP participating.

The method of the sub-district of a kind of definite participation coordinate multipoint CoMP that the embodiment of the invention provides, this method comprises:

The cell ID of network side each sub-district in the measurement sub-district basic set that the terminal transmission is determined;

Described network side is determined the CoMP participating set of cells from the basic set of described measurement sub-district, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating according to the index information received from the basic set of described measurement sub-district, wherein the bit number that takies less than each cell ID of the bit number that takies of each index information.

Terminal receives the cell ID from each sub-district in the measurement sub-district basic set of network side;

Described terminal is determined the sub-district of CoMP participating according to the index information of each sub-district of receiving from measure the sub-district basic set, wherein the bit number that takies less than the cell ID of each sub-district of the bit number that takies of the index information of each sub-district.

The system of the sub-district of a kind of definite participation coordinate multipoint CoMP that the embodiment of the invention provides, this system comprises:

Evolution base station eNB, be used for sending the cell ID of each sub-district of basic set, measurement sub-district of determining to terminal, from the basic set of described measurement sub-district, determine the CoMP participating set of cells, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and the index information of send determining to terminal, the wherein bit number that takies less than each cell ID of the bit number that takies of each index information;

Terminal is used for the index information according to each sub-district of receiving, determines the sub-district of CoMP participating from measure the sub-district basic set.

A kind of eNB that the embodiment of the invention provides, this eNB comprises:

The sign sending module is used for the cell ID to each sub-district of basic set, measurement sub-district that the terminal transmission is determined;

The set determination module is used for determining to participate in coordinate multipoint CoMP set of cells from described measurement sub-district basic set;

Processing module, be used for determining the index information of each cell ID correspondence of CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating from the basic set of described measurement sub-district according to the index information of receiving;

The bit number that takies less than each cell ID of the bit number that takies of each index information wherein.

A kind of terminal that the embodiment of the invention provides, this terminal comprises:

Receiver module is used for receiving the cell ID from each sub-district of basic set, measurement sub-district of network side;

The sub-district determination module is used for the index information according to each sub-district of receiving, determines the sub-district of CoMP participating from measure the sub-district basic set;

Wherein, the bit number that takies less than the cell ID of each sub-district of the bit number that takies of the index information of each sub-district.

The cell ID of embodiment of the invention network side each sub-district in the measurement sub-district basic set that the terminal transmission is determined; Described network side is determined the CoMP participating set of cells from the basic set of described measurement sub-district, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating according to the index information received from the basic set of described measurement sub-district, wherein the bit number that takies less than each cell ID of the bit number that takies of each index information.Owing to only need notify terminal, thereby just reduce signaling consumption with the index information of each sub-district in the sub-district of CoMP participating, improved usage factor of system resource, further improved the efficiency of transmission of system.

Description of drawings

Fig. 1 is a CoMP technology schematic diagram;

Fig. 2 is the system configuration schematic diagram of the sub-district of a kind of definite CoMP participating of the embodiment of the invention;

Fig. 3 A is an embodiment of the invention eNB structural representation;

Fig. 3 B is a MAC control command structural representation;

Fig. 4 is embodiment of the invention terminal (UE) structural representation;

Fig. 5 is the method flow schematic diagram of the sub-district of first kind of definite CoMP participating of the embodiment of the invention;

Fig. 6 is the method flow schematic diagram of the sub-district of second kind of definite CoMP participating of the embodiment of the invention.

Embodiment

The cell ID of embodiment of the invention network side each sub-district in the measurement sub-district basic set that the terminal transmission is determined, from measure the sub-district basic set, determine the CoMP participating set of cells, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating according to the index information received from measure the sub-district basic set, wherein the bit number that takies less than each cell ID of the bit number that takies of each index information.Owing to only need notify terminal, thereby just reduce signaling consumption, improve usage factor of system resource with the index information of each sub-district in the sub-district of CoMP participating.

If measuring the sub-district basic set is Measurement Set (measuring assembly), then the CoMP participating set of cells is a kind of among Reporting Set (report set), Cooperating Set (cooperative cell set) and the Transmission Point (the transmission point is gathered);

If measuring the sub-district basic set is Reporting Set, then the CoMP participating set of cells is Cooperating Set or Transmission Point.

Wherein, Measurement Set: the adjacent set of cells of measurement comprises with frequency and/or alien-frequency district.

Reporting Set: the set of cells that needs to measure and report CQI channel quality parameter such as (QoS class Identifier, QoS class letters).

Cooperating Set: the set of cells that directly or indirectly participates in Combined Treatment.

Transmission Point (s): the sub-district of actual participation transmission.

As shown in Figure 2, the system of the sub-district of a kind of definite CoMP participating of the embodiment of the invention comprises: eNB (evolution base station) 10 and terminal 20.

ENB 10, be used for sending the cell ID of each sub-district of basic set, measurement sub-district of determining to terminal 20, from measure the sub-district basic set, determine the CoMP participating set of cells, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and send the index information of determining to terminal.

Wherein, the bit number that takies less than each cell ID of the bit number that takies of each index information.

Terminal 20 is used for according to the index information of receiving from each sub-district of eNB 10, from receive from the sub-district of determining CoMP participating the measurement sub-district basic set of eNB 10.

As shown in Figure 3A, the eNB of the embodiment of the invention comprises: sign sending module 100, set determination module 110 and processing module 120.

Sign sending module 100 is used for the cell ID to each sub-district of basic set, measurement sub-district that the terminal transmission is determined.

Set determination module 110 is used for determining the CoMP participating set of cells from measuring the sub-district basic set.

Processing module 120, be used for determining the index information of each cell ID correspondence of CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating from measure the sub-district basic set according to the index information of receiving.

In specific implementation process, index information includes but not limited to a kind of in the following message:

Bit among cell number, the bitmap (bit mapping).

Which kind of mode index information specifically adopts to be set by agreement, also can hold consultation definite by network side and terminal.

Whether the sub-district in the measurement sub-district basic set of this bit correspondence of the value representation of the bit among the bitmap belongs to the CoMP participating set of cells, such as: the value of bit is that " 1 " expression bit corresponding district belongs to the CoMP participating set of cells, and the value of bit is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells.

The mode that processing module 120 sends index information to terminal includes but not limited to a kind of in the following manner:

Index information is placed RRC (Radio Resource Control, Radio Resource control) send in the signaling, concrete can place each index information a RRC signaling, also all index informations can be placed the RRC signaling (if index information is the bit of bitmap, owing to will send bitmap, so bitmap can only be placed a RRC signaling);

Index information is placed MAC (Media Access Control, the medium access control) sends in the control command, shown in Fig. 3 B, the MAC control command comprises MAC head and control unit two parts, concrete can be to be exclusively used in indication CoMP participating set of cells (such as being to be exclusively used in indication CoMP participating set of cells with the indication of the reserved value among LCID control unit) by LCID (logical channel ID, logical channel number) the indication control unit in the MAC head.Comprise indication territory, sub-district in the control unit, if not enough 8bit, remaining bit adds 0, if surpass 8bit, can increase the figure place of control unit;

Index information is placed PDCCH (physical downlink control channel, Physical Downlink Control Channel) sends in the order, place PDCCH order to send to be applicable to the CoMP participating set of cells to change indication when very fast index information, the concrete indication territory, sub-district of in the PDCCH order, carrying.

Processing module 120 concrete which kind of mode that adopt can be set by agreement to terminal transmission index information, also can hold consultation definite by network side and terminal.

The mode of processing module 120 notice terminal index informations has a variety of, enumerates dual mode below.

Mode one, implicit expression advice method.

Wherein, carry out before the mode one, need the notice terminal to adopt implicit expression mode (being that indicating terminal is determined index information according to the order that receives cell ID), the mode of concrete notice can be arranged in advance by agreement; Also can hold consultation definite by network side and terminal; Can also identify the cell ID of 100 each sub-districts in the measurement sub-district basic set that the terminal transmission is determined of sending module, that is to say that terminal (in the mode two, can send the cell ID and the cell number of binding to terminal) when the cell ID of not receiving not with the cell number binding determines to determine index information according to the order that receives cell ID.

Need to prove that the embodiment of the invention is not limited to above-described advice method, other can notify terminal to adopt the advice method of implicit expression all is to use the embodiment of the invention.

If index information is a cell number, processing module 120 sends the order of cell ID according to sign sending module 100, determine each cell ID corresponding district numbering in the CoMP participating set of cells, cell number as index information, is sent the index information of determining to terminal.

In specific implementation process, processing module 120 can be determined the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district, such as the number of cells of measuring in the basic set of sub-district is N, and then the bit number that takies of each cell number is ceil (log2 (N)).

The bit number notice terminal that processing module 120 can take cell number, also can determine the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district by terminal, concrete mode is identical with the mode of the bit number that the cell number that processing module 120 is determined takies, and repeats no more.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, processing module 120 determines that the bit number that each cell number takies is ceil (log2 (3))=2bit.

Suppose that the order that sending module 100 sends cell ID is the cell ID that sends the A sub-district earlier, send the cell ID of B sub-district again, send the cell ID of C sub-district at last.

Then the cell number of processing module 120 definite 3 sub-districts is that the cell number of A sub-district is 1 (00), and the cell number of B sub-district is 2 (01), and the cell number of C sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, processing module 120 determines that each cell ID corresponding district numbering is 00 and 01 in the CoMP participating set of cells.

Need to prove, adopt cell number to be numbered in proper order from small to large here, also can adopt descending order to be numbered as required; Concrete which kind of order that adopts can be determined by agreement, also can be consulted to determine by network side and terminal.But need to guarantee that network side and terminal adopt same order.

If index information is a bit, processing module 120 is according to the number of cells of measuring in the basic set of sub-district, determine the quantity of the bit among the bit mapping bitmap, and with each bit as index information, send the order of cell ID according to sending module 100, determine each the bit corresponding district sign among the bitmap, and the value of determining the bit of each sub-district correspondence, bitmap sent to terminal.

In specific implementation process, processing module 120 can be determined the bit number that bitmap takies according to the number of cells of measuring in the basic set of sub-district, such as the number of cells of measuring in the basic set of sub-district is N, and then the bit number that takies of bitmap is N, i.e. total N bit among the bitmap.The bit number notice terminal that processing module 120 can take bitmap also can be determined the bit number that bitmap takies according to the number of cells of measuring in the basic set of sub-district by terminal.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, processing module 120 determines that the bit number that bitmap take is 3bit.Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, the value of the bit among the bitmap is that " 1 " expression bit corresponding district belongs to the CoMP participating set of cells, the value of the bit among the bitmap is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells, processing module 120 determines to measure the value of the bit of each cell ID correspondence in the basic set of sub-district: the A sub-district is 1, the B sub-district is 1, and the C sub-district is 0.

Then bitmap is the A sub-district of corresponding the 1st transmission of 110, the 1 numbers (promptly 1), the B sub-district of corresponding the 2nd transmission of the 2nd number (promptly 1), the C sub-district of the 3rd number (promptly 0) the 3rd transmission of correspondence.

Mode two, explicit notification mode.

Wherein, carry out before the mode two, need the notice terminal to adopt dominant mode (being that indicating terminal is determined index information according to the cell number order), the mode of concrete notice can be arranged in advance by agreement; Also can hold consultation definite by network side and terminal; Can also identify sending module 100 and send the cell ID and the cell number of binding, that is to say that terminal determines to determine index information according to the order that receives cell ID when the cell ID of receiving with the cell number binding to terminal.

If employing mode two, sending module 100 determine to measure each cell ID corresponding district numbering in the basic set of sub-district, the cell number and the cell ID of same sub-district are bound cell number and cell ID after terminal sends binding.

If index information is a cell number, processing module 120 is determined each cell ID corresponding district numbering in the CoMP participating set of cells, and cell number as index information, is sent the cell number of determining to terminal.

In specific implementation process, processing module 120 can be determined the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district, the bit number notice terminal that processing module 120 can take cell number, also can determine the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district by terminal, concrete processing module 120 and terminal determine that the mode of the bit number that cell number takies illustrates, repeats no more in mode one.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, processing module 120 determines that the bit number that cell number take is 3bit.Sending module 100 determines that the cell number of A sub-district is 1 (00), and the cell number of C sub-district is 2 (01), and the cell number of B sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, processing module 120 determines that each cell ID corresponding district numbering is 00 and 10 in the CoMP participating set of cells.

If index information is a bit, processing module 120 is according to the number of cells of measuring in the basic set of sub-district, determine the quantity of the bit among the bitmap, and with each bit as index information, size according to the cell number of determining, determine each the bit corresponding district sign among the bitmap, and the value of determining the bit of each sub-district correspondence, bitmap sent to terminal.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, sending module 100 determines that the cell number of A sub-districts is 1 (00), and the cell number of C sub-district is 2 (01), and the cell number of B sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, the value of the bit among the bitmap is that " 1 " expression bit corresponding district belongs to the CoMP participating set of cells, the value of the bit among the bitmap is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells, processing module 120 is determined the value of each bit among the bitmap according to the size (promptly order from small to large is 00,01 and 10) of the cell number of determining.

Then bitmap is the corresponding minimum cell number of 101, the 1 numbers (promptly 1), i.e. A sub-district; Cell number in the middle of the 2nd number (promptly 0) is corresponding, i.e. B sub-district; The corresponding maximum cell number of the 3rd number (promptly 1), i.e. B sub-district.

Index information is that the mode of bit is because the bit among the bitmap can be represented the sub-district of all CoMP participatings, the mode of comparing index information and be cell number is more suitable in the joint transmission, measures the scene that the number of cells in sub-district basic set and the CoMP participating set of cells is more or less the same.

Index information in the embodiment of the invention be not limited to above for example, all be suitable for the embodiment of the invention as long as satisfy the index information of following condition:

1, the bit number that takies less than cell ID of the bit number that takies of index information;

2, all corresponding index information in each sub-district in the basic set of measurement sub-district, and can allow terminal determine corresponding district according to index information.

As shown in Figure 4, the terminal of the embodiment of the invention comprises: receiver module 200 and sub-district determination module 210.

Receiver module 200 is used for receiving the cell ID from each sub-district of basic set, measurement sub-district of network side.

Sub-district determination module 210 is used for the index information according to each sub-district of receiving, determines the sub-district of CoMP participating from measure the sub-district basic set.

In specific implementation process, can stipulate which kind of advice method network side adopts by agreement, also can whether bind the judgement network side and adopt which kind of advice method according to the cell ID of receiving with cell number, if such as receiving the cell ID of binding with cell number, then determine to adopt the explicit notification mode; Otherwise, determine to adopt the implicit expression advice method.

Enumerating dual mode below respectively is elaborated.

Mode one, implicit expression advice method.

If index information is a cell number, sub-district determination module 210 is after the cell number of receiving from network side, receive the order of cell IDs according to receiver module 200, determine the cell number corresponding district sign received, and definite cell ID corresponding district sub-district that is CoMP participating.

Wherein, cell number is that network side is determined according to the order that sends cell ID.

Comprise 3 sub-districts in the measurement sub-district basic set of receiving such as receiver module 200, i.e. A sub-district, B sub-district and C sub-district, sub-district determination module 210 determines that the bit number that each cell number takies is ceil (log2 (3))=2bit.

Suppose that the order that receiver module 200 receives cell ID is the cell ID that receives the A sub-district earlier, receive the cell ID of B sub-district again, receive the cell ID of C sub-district at last, so sub-district determination module 210 can be determined the cell number of 3 sub-districts: (promptly 10) numbered and be 3 to A sub-district corresponding district numbering is 1 (promptly 00), B sub-district corresponding district numbering are 2 (promptly 01) and C sub-district corresponding district.

Suppose that the cell number that sub-district determination module 210 is received is 00 and 01, then sub-district determination module 210 determines that A sub-district and B sub-district are the sub-districts of CoMP participating.

If index information is a bit, sub-district determination module 210 is behind the bitmap that receives from network side, receive the order of cell ID according to receiver module 200, each bit corresponding district sign among the bitmap that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

Wherein, whether the sub-district in the measurement sub-district basic set of this bit correspondence of the value representation of bit belongs to the CoMP participating set of cells, and the order of each bit is that network side is determined according to the order that sends cell ID among the bitmap.

Such as: comprise 3 sub-districts in the measurement sub-district basic set that receiver module 200 is received, i.e. A sub-district, B sub-district and C sub-district, sub-district determination module 210 determines that the bit number that bitmap take is 3bit.

The bitmap from network side that sub-district determination module 210 is received is 110.

Suppose that the order that receiver module 200 receives cell ID is the cell ID that receives the A sub-district earlier, receive the cell ID of B sub-district again, receive the cell ID of C sub-district at last, so sub-district determination module 210 just can be determined among the bitmap, the cell ID of corresponding the 1st reception of the 1st number (promptly 1), i.e. A sub-district; Corresponding the 2nd cell ID that receives of the 2nd number (promptly 1), i.e. B sub-district, the 3rd number (promptly 0) correspondence the 3rd cell ID that receives, i.e. C sub-district.

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, the value of the bit among the bitmap is that " 1 " expression bit corresponding district belongs to the CoMP participating set of cells, and the value of the bit among the bitmap is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells.

Sub-district determination module 210 determines that A sub-district and B sub-district are the sub-districts of CoMP participating.

Mode two, explicit notification mode.

If index information is a cell number, sub-district determination module 210 is in the cell number of receiving from network side, and when receiver module 200 is received with the cell ID that cell number is bound, the cell ID and the cell number of the binding of receiving according to receiver module 200, the cell number corresponding district sign of determining to receive, and definite cell ID corresponding district sub-district that is CoMP participating.

The content of the cell ID of binding with cell number that receiver module 200 is received is the cell ID and cell number 1 (00) binding of A sub-district; The cell ID of C sub-district and cell number 2 (01) bindings; The cell ID of B sub-district and cell number 3 (10) bindings.

The cell number that sub-district determination module 210 is received is 00 and 10, and then sub-district determination module 210 determines that A sub-district and B sub-district are the sub-districts of CoMP participating.

If index information is a bit, sub-district determination module 210 is at the bitmap that receives from network side, and when receiver module 200 is received with the cell ID that cell number is bound, size according to the cell number of receiving, the cell ID of receiving is sorted, and according to the cell ID after the ordering, each bit corresponding district sign among the bitmap that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

Wherein, whether the sub-district in the measurement sub-district basic set of this bit correspondence of the value representation of bit belongs to the CoMP participating set of cells, and the order of each bit is that network side is determined according to the size of cell number among the bitmap.

Sub-district determination module 210 sorts to the cell ID of receiving according to the size (such as order from small to large) of the cell number of receiving, i.e. order after the cell ID ordering is the cell ID of A sub-district, the cell ID of C sub-district, the cell ID of B sub-district.

The bitmap from network side that sub-district determination module 210 is received is 101.

Because the order after the cell ID ordering is the cell ID of A sub-district, the cell ID of C sub-district, the cell ID of B sub-district is so sub-district determination module 210 just can be determined among the bitmap cell ID of the 1st number (promptly 1) corresponding A sub-district; The cell ID of the 2nd number (promptly 0) corresponding C sub-district; The cell ID of the 3rd number (promptly 1) corresponding B sub-district.

As shown in Figure 5, the method for the sub-district of first kind of definite CoMP participating of the embodiment of the invention comprises the following steps:

The cell ID of step 501, network side each sub-district in the measurement sub-district basic set that the terminal transmission is determined.

Step 502, network side are determined the CoMP participating set of cells from measure the sub-district basic set, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating from measure the sub-district basic set according to the index information of receiving.

Bit among cell number, the bitmap.

In the step 502, the mode that network side sends index information to terminal includes but not limited to a kind of in the following manner:

Place the RRC signaling to send index information, concrete can place each index information a RRC signaling, also all index informations can be placed the RRC signaling (if index information is the bit of bitmap, owing to will send bitmap, so bitmap can only be placed a RRC signaling);

Place the MAC control command to send index information, shown in Fig. 3 B, the MAC control command comprises MAC head and control unit two parts, and concrete can be to be exclusively used in indication CoMP participating set of cells (such as being to be exclusively used in indication CoMP participating set of cells with the indication of the reserved value among LCID control unit) by the LCID indication control unit in the MAC head.Comprise indication territory, sub-district in the control unit, if not enough 8bit, remaining bit adds 0, if surpass 8bit, can increase the figure place of control unit;

Place PDCCH order to send index information, place the PDCCH order to send to be applicable to the CoMP participating set of cells to change indication when very fast index information, the concrete indication territory, sub-district of in the PDCCH order, carrying.

Which kind of mode network side specifically adopts send index information to terminal and can be set by agreement, also can hold consultation definite by network side and terminal.

Wherein, the mode of network side notice terminal index information has a variety ofly in the step 502, enumerates dual mode below.

Mode one, implicit expression advice method.

Wherein, carry out before the mode one, network side need notify terminal to adopt implicit expression mode (being that indicating terminal is determined index information according to the order that receives cell ID), and the mode of concrete notice can be arranged in advance by agreement; Also can hold consultation definite by network side and terminal; Can also be in step 501 network side only send the cell ID of each sub-district in the measurement sub-district basic set of determining to terminal, that is to say that terminal (in the mode two, can send the cell ID and the cell number of binding to terminal) when the cell ID of not receiving not with the cell number binding determines to determine index information according to the order that receives cell ID.

If index information is a cell number, network side is determined each cell ID corresponding district numbering in the CoMP participating set of cells according to the order that sends cell ID, and cell number as index information, is sent the index information of determining to terminal.

Accordingly, terminal is according to the order that receives cell ID, determines the cell number corresponding district sign received, and definite cell ID corresponding district sub-district that is CoMP participating.

In specific implementation process, network side can be determined the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district, such as the number of cells of measuring in the basic set of sub-district is N, and then the bit number that takies of each cell number is ceil (log2 (N)).

The bit number notice terminal that network side can take cell number, also can determine the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district by terminal, concrete mode is identical with the mode of the bit number that the cell number that network side is determined takies, and repeats no more.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, network side determines that the bit number that each cell number takies is ceil (log2 (3))=2bit.

The order of supposing network side transmission cell ID in the step 501 is the cell ID that sends the A sub-district earlier, sends the cell ID of B sub-district again, sends the cell ID of C sub-district at last.

Then network side determines that the cell number of 3 sub-districts is that the cell number of A sub-district is 1 (00) in the step 502, and the cell number of B sub-district is 2 (01), and the cell number of C sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, network side determines that each cell ID corresponding district numbering is 00 and 01 in the CoMP participating set of cells.

If index information is a bit, network side is according to the number of cells of measuring in the basic set of sub-district, determine the quantity of the bit among the bit mapping bitmap, and with each bit as index information, according to the order that sends cell ID, determine each the bit corresponding district sign among the bitmap, and the value of determining the bit of each sub-district correspondence, bitmap sent to terminal.

Accordingly, terminal is according to the order that receives cell ID, and each bit corresponding district sign among the bitmap that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

In specific implementation process, network side can be determined the bit number that bitmap takies according to the number of cells of measuring in the basic set of sub-district, such as the number of cells of measuring in the basic set of sub-district is N, and then the bit number that takies of bitmap is N, i.e. total N bit among the bitmap.The bit number notice terminal that network side can take bitmap also can be determined the bit number that bitmap takies according to the number of cells of measuring in the basic set of sub-district by terminal.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, network side determines that the bit number that bitmap takies is 3bit.Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, " value of the bit among the bitmap is 1 " expression bit corresponding district belongs to the CoMP participating set of cells, the value of the bit among the bitmap is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells, network side determines to measure the value of the bit of each cell ID correspondence in the basic set of sub-district: the A sub-district is 1, the B sub-district is 1, and the C sub-district is 0.

Then the bitmap that network side is determined in the step 502 is the A sub-district of corresponding the 1st transmission of 110, the 1 numbers (promptly 1), the B sub-district of the 2nd number (promptly 1) the 2nd transmission of correspondence, the C sub-district of the 3rd number (promptly 0) the 3rd transmission of correspondence.

Mode two, explicit notification mode.

Wherein, carry out before the mode two, need the notice terminal to adopt dominant mode (being that indicating terminal is determined index information according to the cell number order), the mode of concrete notice can be arranged in advance by agreement; Also can hold consultation definite by network side and terminal; Can also be in step 501 network side send the cell ID and the cell number of binding to terminal, that is to say that terminal determines to determine index information according to the order that receives cell ID when the cell ID of receiving with the cell number binding.

If employing mode two, network side determines to measure each cell ID corresponding district numbering in the basic set of sub-district in the step 501, the cell number and the cell ID of same sub-district is bound cell number and cell ID after terminal sends binding.

If index information is a cell number, network side is determined each cell ID corresponding district numbering in the CoMP participating set of cells, and cell number as index information, is sent the cell number of determining to terminal.

Accordingly, terminal is according to the cell ID and the cell number of the binding of receiving, determines the cell number corresponding district sign received, and definite cell ID corresponding district sub-district that is CoMP participating.

In specific implementation process, network side can be determined the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district, the bit number notice terminal that network side can take cell number, also can determine the bit number that cell number takies according to the number of cells of measuring in the basic set of sub-district by terminal, concrete network side and terminal determine that the mode of the bit number that cell number takies illustrates, repeats no more in mode one.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, network side determines that the bit number that cell number takies is 3bit.Network side determines that the cell number of A sub-district is 1 (00), and the cell number of C sub-district is 2 (01), and the cell number of B sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, network side determines that each cell ID corresponding district numbering is 00 and 10 in the CoMP participating set of cells.

If index information is a bit, network side is according to the number of cells of measuring in the basic set of sub-district, determine the quantity of the bit among the bitmap, and with each bit as index information, size according to the cell number of determining, determine each the bit corresponding district sign among the bitmap, and the value of the bit of fixed each sub-district correspondence, bitmap sent to terminal.

Accordingly, terminal is according to the size of the cell number of receiving, the cell ID of receiving is sorted, and according to the cell ID after the ordering, each bit corresponding district sign among the bitmap of association that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

Such as: measure in the basic set of sub-district and comprise 3 sub-districts, i.e. A sub-district, B sub-district and C sub-district, network side determines that the cell number of A sub-district is 1 (00), and the cell number of C sub-district is 2 (01), and the cell number of B sub-district is 3 (10).

Suppose that the sub-district in the CoMP participating set of cells is A sub-district and B sub-district, the value of the bit among the bitmap is that " 1 " expression bit corresponding district belongs to the CoMP participating set of cells, the value of the bit among the bitmap is that " 0 " expression bit corresponding district does not belong to the CoMP participating set of cells, network side is determined the value of each bit among the bitmap according to the size (promptly order from small to large is 00,01 and 10) of the cell number of determining.

As shown in Figure 6, the method for the sub-district of second kind of definite CoMP participating of the embodiment of the invention comprises the following steps:

Step 601, terminal receive the cell ID from each sub-district in the measurement sub-district basic set of network side.

The index information of each sub-district that step 602, terminal basis are received, the sub-district of definite CoMP participating from measure the sub-district basic set.

Enumerating dual mode below respectively is elaborated.

Mode one, implicit expression advice method.

If index information is a cell number, terminal according to the order that receives cell ID, is determined the cell number corresponding district sign received after the cell number of receiving from network side, and definite cell ID corresponding district sub-district that is CoMP participating.

Comprise 3 sub-districts in the measurement sub-district basic set of receiving such as terminal, i.e. A sub-district, B sub-district and C sub-district determine that the bit number that each cell number takies is ceil (log2 (3))=2bit.

The order of supposing terminal reception cell ID in the step 601 is the cell ID that receives the A sub-district earlier, receive the cell ID of B sub-district again, receive the cell ID of C sub-district at last, so terminal can be determined the cell number of 3 sub-districts in the step 602: (promptly 10) numbered and be 3 to corresponding district numbering in A sub-district is 1 (promptly 00), B sub-district corresponding district numbering are 2 (promptly 01) and C sub-district corresponding district.

Suppose that the cell number that terminal is received is 00 and 01, then terminal determines that A sub-district and B sub-district are the sub-districts of CoMP participating.

If index information is a bit, terminal is behind the bitmap that receives from network side, according to the order that receives cell ID, each the bit corresponding district sign among the bitmap that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

Such as: comprise 3 sub-districts in the measurement sub-district basic set that terminal is received, i.e. A sub-district, B sub-district and C sub-district determine that the bit number that bitmap takies is 3bit.

The bitmap from network side that terminal is received is 110.

The order of supposing terminal reception cell ID in the step 601 is the cell ID that receives the A sub-district earlier, receive the cell ID of B sub-district again, receive the cell ID of C sub-district at last, so terminal just can be determined among the bitmap in the step 602, the cell ID of corresponding the 1st reception of the 1st number (promptly 1), i.e. A sub-district; Corresponding the 2nd cell ID that receives of the 2nd number (promptly 1), i.e. B sub-district, the 3rd number (promptly 0) correspondence the 3rd cell ID that receives, i.e. C sub-district.

Terminal determines that A sub-district and B sub-district are the sub-districts of CoMP participating.

Mode two, explicit notification mode.

If index information is a cell number, terminal is in the cell number of receiving from network side, and when receiving with cell ID that cell number is bound, cell ID and cell number according to the binding of receiving, the cell number corresponding district sign of determining to receive, and definite cell ID corresponding district sub-district that is CoMP participating.

The content of the cell ID of binding with cell number that terminal is received is the cell ID and cell number 1 (00) binding of A sub-district; The cell ID of C sub-district and cell number 2 (01) bindings; The cell ID of B sub-district and cell number 3 (10) bindings.

The cell number that terminal is received is 00 and 10, determines that then A sub-district and B sub-district are the sub-districts of CoMP participating.

If index information is a bit, terminal is at the bitmap that receives from network side, and when receiving with cell ID that cell number is bound, size according to the cell number of receiving, the cell ID of receiving is sorted, and according to the cell ID after the ordering, each bit corresponding district sign among the bitmap that determines to receive is according to the value of bit and the sub-district of the definite CoMP participating of bit corresponding district sign.

Terminal sorts to the cell ID of receiving according to the size (such as order from small to large) of the cell number of receiving, i.e. order after the cell ID ordering is the cell ID of A sub-district, the cell ID of C sub-district, the cell ID of B sub-district.

The bitmap from network side that terminal is received is 101.

Suppose that the order after the sub-district mark-row preface is the cell ID of A sub-district in the step 601, the cell ID of C sub-district, the cell ID of B sub-district, so terminal just can be determined among the bitmap in the step 602, the cell ID of the 1st number (promptly 1) corresponding A sub-district; The cell ID of the 2nd number (promptly 0) corresponding C sub-district; The cell ID of the 3rd number (promptly 1) corresponding B sub-district.

From the foregoing description as can be seen: the cell ID of embodiment of the invention network side each sub-district in the measurement sub-district basic set that terminal send to be determined; Described network side is determined the CoMP participating set of cells from the basic set of described measurement sub-district, and the index information of each cell ID correspondence in definite CoMP participating set of cells, and to the definite index information of terminal transmission, indicating terminal is determined the cell ID of CoMP participating according to the index information received from the basic set of described measurement sub-district, wherein the bit number that takies less than each cell ID of the bit number that takies of each index information.Owing to only need notify terminal, thereby just reduce signaling consumption with the index information of each sub-district in the sub-district of CoMP participating, improved usage factor of system resource, further improved the efficiency of transmission of system.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. method that determine to participate in the sub-district of coordinate multipoint CoMP is characterized in that this method comprises:

2. the method for claim 1 is characterized in that, described network side is determined the index information of each cell ID correspondence in the CoMP participating set of cells, and the index information of determining to the terminal transmission comprises:

Described network side is determined each cell ID corresponding district numbering in the CoMP participating set of cells according to the order that sends cell ID;

Described network side as index information, sends the index information of determining with described cell number to terminal;

Described network side also comprises after terminal sends the index information of determining:

Described terminal is determined the described cell number corresponding district sign of receiving according to the order that receives cell ID;

Described terminal determines that the cell ID corresponding district is the sub-district of CoMP participating.

3. the method for claim 1 is characterized in that, described network side is determined the index information of each cell ID correspondence in the CoMP participating set of cells, and the index information of determining to the terminal transmission comprises:

Described network side is according to the number of cells in the basic set of described measurement sub-district, determines the quantity of the bit among the bit mapping bitmap, and with each bit as index information;

Described network side is determined each the bit corresponding district sign among the bitmap according to the order that sends cell ID;

Described network side is determined the value of the bit of each sub-district correspondence, and whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of described bit belongs to the CoMP participating set of cells;

Described network side sends described bitmap to terminal;

Described terminal is according to the order that receives cell ID, and each bit corresponding district identifies among the described bitmap that determines to receive;

The sub-district that described terminal is determined CoMP participating according to the value and the described bit corresponding district sign of described bit.

4. the method for claim 1 is characterized in that, described network side sends cell ID to terminal and comprises:

Described network side determines to measure each cell ID corresponding district numbering in the basic set of sub-district;

Described network side is bound the cell number and the cell ID of same sub-district;

Cell number and the cell ID of described network side after terminal sends binding.

5. method as claimed in claim 4 is characterized in that described network side is determined the index information of each cell ID correspondence in the CoMP participating set of cells, and the index information of determining to the terminal transmission comprises:

Described network side is determined each cell ID corresponding district numbering in the CoMP participating set of cells;

Described network side as index information, sends the described cell number of determining with described cell number to terminal;

Described terminal is determined the cell number corresponding district sign of receiving according to the cell ID and the cell number of the binding of receiving;

6. method as claimed in claim 4 is characterized in that described network side is determined the index information of each cell ID correspondence in the CoMP participating set of cells, and the index information of determining to the terminal transmission comprises:

Described network side is determined the quantity of the bit among the bitmap according to the number of cells in the basic set of described measurement sub-district, and with each bit as index information;

Described network side is determined each the bit corresponding district sign among the bitmap according to the size of the cell number of determining;

Described network side sends described bitmap to terminal;

Described terminal sorts to the cell ID of receiving according to the size of the cell number of receiving, and according to the cell ID after the ordering, each bit corresponding district sign among the described bitmap that determines to receive;

7. as the described method of the arbitrary claim of claim 1～6, it is characterized in that described network side sends index information by a kind of in the following manner to terminal:

Place the radio resource control RRC signaling to send index information;

Place the media access control MAC control command to send index information;

Place the physical downlink control channel PDCCH order to send index information.

8. as the described method of the arbitrary claim of claim 1～6, it is characterized in that, if described measurement sub-district basic set is measuring assembly Measurement Set, described CoMP participating set of cells is a kind of among report set Reporting Set, cooperative cell set Cooperating Set and the transmission point set TransmissionPoint;

If described measurement sub-district basic set is Reporting Set, described CoMP participating set of cells is Cooperating Set or Transmission Point.

9. method that determine to participate in the sub-district of coordinate multipoint CoMP is characterized in that this method comprises:

10. method as claimed in claim 9 is characterized in that, if described index information is a cell number, described terminal determines that the cell ID in the CoMP participating set of cells comprises:

Described terminal is according to the order that receives cell ID, determine that the described cell number corresponding district of receiving identifies, determine that the cell ID corresponding district is the sub-district of CoMP participating, wherein said cell number is that described network side is determined according to the order that sends cell ID.

11. method as claimed in claim 9 is characterized in that, if described index information is a cell number, described terminal is received the cell ID of binding with cell number, and described terminal determines that the cell ID in the CoMP participating set of cells comprises:

Described terminal is according to the cell ID and the cell number of the binding of receiving, determines the cell number corresponding district sign received, and definite cell ID corresponding district sub-district that is CoMP participating.

12. method as claimed in claim 9, it is characterized in that, if described index information is a bit, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of described bit belongs to the CoMP participating set of cells, and described terminal determines that the cell ID in the CoMP participating set of cells comprises:

Described terminal is according to the order that receives cell ID, each bit corresponding district sign among the bitmap that determines to receive, according to the sub-district that the value and the described bit corresponding district sign of described bit are determined CoMP participating, the order of each bit is that network side is determined according to the order that sends cell ID among the wherein said bitmap.

13. method as claimed in claim 9, it is characterized in that, if described index information is a bit, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of described bit belongs to the CoMP participating set of cells, described terminal is received the cell ID of binding with cell number, and described terminal determines that the cell ID in the CoMP participating set of cells comprises:

Described terminal is according to the size of the cell number of receiving, the cell ID of receiving is sorted, and according to the cell ID after the ordering, each bit corresponding district sign among the described bitmap that determines to receive, according to the sub-district that the value and the described bit corresponding district sign of described bit are determined CoMP participating, the order of each bit is that network side is determined according to the size of cell number among the wherein said bitmap.

14. a system that determines the sub-district of participation coordinate multipoint CoMP is characterized in that this system comprises:

15. an evolution base station eNB is characterized in that, this eNB comprises:

16. eNB as claimed in claim 15 is characterized in that, described processing module is used for:

According to the order that sends cell ID, determine each cell ID corresponding district numbering in the CoMP participating set of cells, described cell number as index information, is sent the index information of determining to terminal; Or

According to the number of cells in the basic set of described measurement sub-district, determine the quantity of the bit among the bit mapping bitmap, and with each bit as index information, according to the order that sends cell ID, determine each the bit corresponding district sign among the bitmap, and the value of determining the bit of each sub-district correspondence, send described bitmap to terminal, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of wherein said bit belongs to the CoMP participating set of cells.

17. eNB as claimed in claim 15 is characterized in that, described sign sending module is used for:

Determine to measure each cell ID corresponding district numbering in the basic set of sub-district, the cell number and the cell ID of same sub-district are bound cell number and cell ID after terminal sends binding.

18. eNB as claimed in claim 17 is characterized in that, described processing module is used for:

Determine each cell ID corresponding district numbering in the CoMP participating set of cells, described cell number as index information, is sent the described cell number of determining to terminal; Or

According to the number of cells in the basic set of described measurement sub-district, determine the quantity of the bit among the bitmap, and with each bit as index information, size according to the cell number of determining, determine each the bit corresponding district sign among the bitmap, and the value of determining the bit of each sub-district correspondence, send described bitmap to terminal, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of wherein said bit belongs to the CoMP participating set of cells.

19., it is characterized in that described processing module sends index information by a kind of in the following manner to terminal as the described eNB of the arbitrary claim of claim 15～18:

Place the radio resource control RRC signaling to send index information;

Place the media access control MAC control command to send index information;

20. as the described eNB of the arbitrary claim of claim 15～18, it is characterized in that, if described measurement sub-district basic set is measuring assembly Measurement Set, described CoMP participating set of cells is a kind of among report set Reporting Set, cooperative cell set Cooperating Set and the transmission point set Transmission Point;

21. a terminal is characterized in that, this terminal comprises:

22. terminal as claimed in claim 21 is characterized in that, described sub-district determination module is used for:

When the described index information of receiving is cell number, receive the order of cell ID according to described receiver module, determine the described cell number corresponding district sign received, and definite cell ID corresponding district sub-district that is CoMP participating;

Wherein, described cell number is that described network side is determined according to the order that sends cell ID.

23. terminal as claimed in claim 21 is characterized in that, described sub-district determination module is used for:

At the described index information of receiving is cell number, and when described receiver module is received with the cell ID that cell number is bound, the cell ID and the cell number of the binding of receiving according to described receiver module, the cell number corresponding district sign of determining to receive, and definite cell ID corresponding district sub-district that is CoMP participating.

24. terminal as claimed in claim 21 is characterized in that, described sub-district determination module is used for:

When the described index information of receiving is bit, receive the order of cell ID according to described receiver module, each bit corresponding district sign among the bitmap that determines to receive is according to the value of described bit and the sub-district of the definite CoMP participating of described bit corresponding district sign;

Wherein, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of described bit belongs to the CoMP participating set of cells, and the order of each bit is that network side is determined according to the order that sends cell ID among the described bitmap.

25. terminal as claimed in claim 21 is characterized in that, described sub-district determination module is used for:

At the described index information of receiving is bit, and when described receiver module is received with the cell ID that cell number is bound, size according to the cell number of receiving, the cell ID of receiving is sorted, and according to the cell ID after the ordering, each bit corresponding district sign among the described bitmap that determines to receive is according to the value of described bit and the sub-district of the definite CoMP participating of described bit corresponding district sign;

Wherein, whether the sub-district in the described measurement sub-district basic set of this bit correspondence of the value representation of described bit belongs to the CoMP participating set of cells, and the order of each bit is that network side is determined according to the size of cell number among the described bitmap.