CN103517314A - Wireless resource management method, base station and terminal thereof - Google Patents

Abstract

The present invention is applicable to the field of communication, and provides a method and device for managing wireless resources. The method includes: after the receiving terminal UE completes the measurement of the reference signal time difference of arrival (RSTD) in one or more 22 positioning reference signal positioning measurement opportunities, it sends a wireless Resource control RRC signaling, wherein the RRC signaling includes: RSTD measurement results in one or more positioning reference signal positioning measurement opportunities, and the RSTD measurement results are expressed as reference signal subframe time of arrival TOA of multiple cells or multiple The relative location of the cell refers to the reference signal arrival time difference RSTD of the arrival time of the cell; radio resource management is performed according to the arrival time of the reference signal subframe or the reference signal arrival time difference of multiple cells. The technical solution provided by the specific embodiment of the present invention has the advantage of reducing time delay.

Description

Radio resource management method, base station and terminal

technical field

The invention belongs to the communication field, and in particular relates to a wireless resource management method, a base station and a terminal.

Background technique

The location information of the terminal can be applied to radio resource management, and the auxiliary serving base station manages the radio resources used by the terminal. For example, according to the location information, estimate the distance (D) between the terminal and each neighboring base station, estimate the propagation delay (PD), estimate the path loss (PL), and uplink lead time (TA) and other parameters, which are used to assist radio resource management. The terminal is also called user equipment (UE).

In the LTE (Long Term Evolution) positioning protocol LPP (LTE Positioning Protocol) defined by 3GPP (Third Generation Partnership Project), the measurement process based on OTDOA (Observed Time Difference of Arrival) is as follows:

Each cell sends a positioning reference signal (PRS), where the sending device of the cell can be a different type of transmission point, including a macro base station Macro, a micro base station Micro, a pico base station Pico, and a remote radio frequency RRH;

The service terminal positioning center sends the OTDOA measurement request and the OTDOA auxiliary message to the terminal;

After receiving the OTDOA auxiliary message, the terminal starts RSTD (Reference Signal Time Difference, reference signal arrival time difference) measurement,

The terminal measures the RSTD of the received PRS signal in one or more PRS positioning occasions (positioning occasions), and reports the RSTD measurement result within the specified maximum reporting time. The service terminal positioning center performs positioning calculation according to RSTD.

However, the measurement RSTD report of OTDOA positioning is transparently transmitted to the service terminal positioning center through the LPP layer. Therefore, the serving base station does not analyze the LPP layer signaling, but transparently transmits it to the serving terminal positioning center.

The service terminal location center calculates the location of the UE according to the RSTD, and then radio resource management needs to calculate the distance from the terminal to the neighbor base station i based on the location of the terminal calculated by the service terminal location center and the positions of each base station ${\mathrm{D.}}_i=\sqrt{{(x_{\mathrm{UE}}-x_{e{\mathrm{NB}}_i})}^2+{({\mathrm{the\; y}}_{\mathrm{UE}}-{\mathrm{the\; y}}_{{\mathrm{eNB}}_i})}^2},$ where X _UE and Y _UE are the coordinates of the terminal on the X-axis and Y-axis respectively, X _eNBi and Y _eNBi are the coordinates of eNB _i on the X-axis and Y-axis respectively, and the estimated propagation delay PD _i =D from the terminal to the neighbor base station i _i /c, the estimated path loss PL i from the terminal to the neighbor base station _i = α ₁ log ₁₀ (D _i )+α ₂ log ₁₀ (fc _i )+α ₃ , where c is the speed of light, α ₁ is the distance coefficient, α ₂ For the carrier frequency coefficient, α ₃ environmental path loss constant, fc _i is the carrier frequency.

According to D _i to carry out wireless resource management, there will be a certain delay, including the transmission delay from the UE to the serving base station, the transmission delay from the serving base station to the service terminal positioning center, the calculation and processing delay of the service terminal positioning center, The time delay from the service terminal positioning center to the serving base station, as well as the RRM calculation and processing delay, etc., result in a large time delay in using positioning information to assist radio resource management.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a radio resource management method, aiming at reducing the time delay of positioning-assisted radio resource management and providing a more real-time radio resource management method.

In one aspect, the present invention provides a

This technical solution avoids the transmission delay from the service base station to the service terminal positioning center in the traditional method, the calculation processing delay from the service terminal positioning center, and the time delay from the service terminal positioning center to the service base station, and realizes more real-time wireless resource management. .

Description of drawings

FIG. 1 is a flow chart of a method for managing wireless resources provided by a specific embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base station provided by an embodiment of the present invention; and

FIG. 3 is a flow chart of a method for supporting a base station to perform radio resource management provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of a terminal structure diagram provided by an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

At first, introduce the realization background of the specific embodiment of the present invention, OTDOA is a kind of method that supports user location, and OTDOA is a kind of method of user location that standard stipulates, and according to the regulation of standard, can obtain RSTD and time of arrival (Time of arrival) by OTDOA of Arrival, TOA). In actual operation, the above TOA is actually the arrival time of the reference signal subframe.

A cell is identified by a cell ID (identifier), which includes a cell physical layer ID and a cell global ID. A base station may include multiple cells, or only one cell. It is generally considered that a macro base station may include multiple cells, and a micro base station and a pico base station may have a smaller coverage area than a macro base station, and may also include multiple cells. The macro base station can also be connected to remote radio equipment through optical fibers to form a split cell. The remote radio equipment does not include a radio resource management unit. Base stations, such as macro base stations, micro base stations, and pico base stations, all include radio resource management units. Various base stations use x2 interface to communicate.

PRS signals are differentiated by cell physical layer IDs and generate orthogonal signals in the time domain or code domain. The terminal distinguishes different cell signals according to different PRS signals.

The specific embodiment of the present invention provides a radio resource management method, which is executed by a base station eNB, as shown in Figure 1, including:

S11. Receive the radio resource control RRC signaling sent by the UE after completing the measurement of the reference signal arrival time difference RSTD in one or more positioning reference signal PRS positioning opportunities, wherein the RRC signaling includes: one or multiple PRS positioning opportunities RSTD measurement result, the RSTD measurement result is expressed as multiple cell reference signal subframe time of arrival TOA or reference signal subframe arrival time difference RSTD of multiple cells;

Optionally, the above RRC signaling may also include: the cell identity corresponding to the RSTD measurement result; of course, in actual situations, the cell identity may not be included, because the base station can match the order in which the positioning request is sent to determine the cell identity corresponding to the RSTD measurement result. district.

Since the terminal and the serving cell maintain downlink timing, and the system frame number SFN of the serving cell is known, the PRS subframe arrival time of the serving base station can be obtained according to the OTDOA assistance message, that is, the downlink timing of the subframe corresponding to the PRS. However, the arrival time of the PRS subframe of the serving cell can also be similar to that of the neighbor cell, and a more accurate arrival time of the PRS subframe of the serving cell can be obtained by correlating the received PRS signal with the local PRS. Therefore, the measured arrival time of the PRS subframe of each cell is a relative time difference relative to the downlink timing of the subframe corresponding to the PRS.

The time of arrival TOA of M cell reference signal subframes can be expressed as TOA _i , i=0,1,...,M-1;

M-1 cell reference signal subframe arrival time difference RSTD, which can be expressed as RSTD _i , i=1,...,M-1;

RSTD _i =TOA _i -TOA ₀ , when the arrival time of the PRS subframe of the serving base station, the downlink timing of the subframe corresponding to the PRS is used, TOA ₀ is zero, and reporting RSTD is equivalent to reporting TOA. The following is an example of reporting TOA. Among them, TOA ₀ represents the positioning reference cell, which is also the serving cell of the UE.

S12. Perform radio resource management according to the arrival times of reference signal subframes or reference signal arrival time differences of multiple cells.

Since the arrival times or differences of reference signal subframes of multiple cells are sent to the base station through RRC signaling, the base station can parse the RRC signaling. And perform related radio resource management operations according to the content of the signaling.

The method provided by the embodiment of the present invention is to directly send the TOA or RSTD to the serving base station through RRC signaling, and the base station directly performs RRM management, thus reducing the transmission delay from the UE to the serving terminal positioning center, and the calculation of the serving terminal positioning center The processing delay is the delay from the service terminal positioning center to the serving base station, so it has the advantage of small transmission delay.

The base station here may include wireless resource scheduling for managing multiple cells, and may be a macro base station, a micro base station, or a pico base station.

In addition, it should be noted that in the technical solution of the embodiment of the present invention, the RSTD measurement result can be sent when one or more PRS positioning opportunities are completed, which further reduces the time delay.

Optionally, the radio resource management above includes any combination of the following items: assisting the terminal to determine a downlink assisted multipoint transmission CoMP measurement set, assisting the terminal to determine whether multiple cells of multi-carrier aggregation CA are suitable for using the same uplink advance amount TA and determine uplink high interference indication HII. Of course, in actual situations, it may also be other radio resource management, such as cell handover.

Optionally, when the radio resource management is to select a downlink CoMP measurement set, the implementation method of S12 specifically includes:

Sort the arrival times of multiple cell reference signal subframes (this sorting can be from high to low, or from low to high), and find the tth cell that satisfies |TOAt–TOAk|<the first preset threshold TOA_TH and the kth cell, TOA _t is the arrival time of the reference signal subframe of the tth cell, and TOA _k is the arrival time of the reference signal subframe of the kth cell; then determine at least one of the tth to the kth cell The transmission point corresponding to the cell (of course, preferably all cells in the tth to kth cells) is the UE downlink ComP measurement set, where TOA_TH may be less than the length of the current cyclic prefix of the base station.

It should be noted that since the CoMP measurement set is only selected in multiple cells in the same frequency layer managed by the serving base station, when the CoMP measurement set is selected, the arrival times of the reference signal subframes of multiple cells are corresponding to multiple cells TOA of the transmission point. The foregoing multiple cells may be multiple cells on the same frequency layer managed by the serving base station matched according to the cell identifiers.

The transmission point here refers to the macro base station and the remote radio equipment connected by optical fiber, which can be multiple remote radio equipment under the same macro base station or a macro base station and multiple remote radio equipment. The radio resource management unit is located in the macro base station.

Optionally, when the RRM is to assist the terminal in determining whether multiple cells of the multi-carrier aggregation CA are suitable for adopting the same uplink advance amount TA, the implementation method of S12 specifically includes:

Obtain the time difference between each positioning cell and serving cell in the plurality of cells sending the positioning reference signal PRS or cell reference signal CRS; send the positioning reference signal PRS or cell reference signal according to each positioning cell and serving cell in the plurality of cells The time difference of CRS determines the cell whose absolute value of the propagation delay difference between cells does not exceed the second preset threshold PD_TH, that is, |TOA _i -ΔPRS _i (TOA _k -ΔPRS _K )|<PD_TH, the determined cell is suitable for using the same As for the uplink advance amount TA, the second threshold can take a typical value of 16Ts, and Ts=1/307200s. The above ΔPRS _i is the time difference between the i-th cell and the serving cell sending the positioning reference signal PRS or the cell reference signal CRS, and ΔPRSk is the time difference between the k-th cell and the serving cell sending the positioning reference signal PRS or the cell reference signal CRS.

It should be noted that since the uplink advance group is selected in multiple cells in different same frequency layers managed by the serving base station, the above-mentioned TOA may be the TOA of the transmission points corresponding to the multiple cells; the above-mentioned multiple cells may be matched according to the cell identifier Multiple cells on different frequency layers managed by the serving base station.

The transmission devices in multiple cells may be different types of transmission points, including macro base station Macro, micro base station Pico, and radio remote RRH.

Optionally, when the RRM performs the uplink high interference indication HII, the implementation method of S12 specifically includes:

Obtaining the time difference between positioning reference signal PRS or cell reference signal CRS sent by each positioning cell and serving cell among the plurality of cells; obtaining the uplink timing advance TA of the terminal; according to the uplink transmission power _PT of the UE, preset the receiver Sensitivity P _R , estimating the UE's uplink interference range UL_Interference_range, and judging whether the eNBi on the same frequency layer as the UE's scheduled resource is in the UE's uplink interference range according to the uplink interference range and uplink timing advance, including:

Judging whether the uplink signal of the UE can reach the base station of cell i, if yes, then judge that the eNBi on the same frequency layer as the resource to be scheduled by the UE is in the uplink interference range of the UE, if not, then judge that the resource to be scheduled by the UE is on the same frequency layer The eNB _i above is not within the UE's uplink interference range;

If it is within the uplink interference range of the UE, the corresponding eNB _i is notified through the uplink HII in the X2 interface that the resource scheduled by the UE has interference.

It should be noted that since the HII is an X2 interface definition field, the TOA in the above HII is the TOA of the transmission points corresponding to multiple cells. The foregoing multiple cells may be multiple cells managed by non-serving base stations matched according to cell identifiers.

It should be noted that the above-mentioned method for judging whether the uplink signal of the UE can reach the base station of the cell i may specifically be as follows:

Judging whether (TA_ref/2+TOA ₀ +TOA _i -ΔPRS _i )×c<UL_Interference_range-L _offset is true, if so, it is judged that there is interference, that is, the UE uplink signal can reach the base station of cell i, which is within the UE's uplink interference range, such as No, it is judged that there is no interference, that is, the uplink signal of the UE cannot reach the base station of cell i, and is not in the uplink interference range of the UE; where UL_Interference_range indicates the interference range of the UE, and L _offset indicates the offset margin (can be zero or non-zero positive number), c represents the speed of light, and TA_ref is the uplink timing advance of the serving cell.

The transmitting device of the cell can be different types of transmission points, including macro base station, micro base station Micro, and pico base station Pico, but does not include remote radio frequency. Since the macro base station directly allocates resources for remote radio frequency, the X2 interface is not used to coordinate resources. .

The embodiment of the present invention also provides a base station, as shown in Figure 2, the base station includes:

The receiving unit 21 is configured to receive the radio resource control RRC signaling sent by the terminal after completing the measurement of the reference signal time difference of arrival (RSTD) in one or more positioning reference signal positioning measurement opportunities, wherein the RRC signaling includes: one or more positioning reference signals The RSTD measurement result of the signal positioning measurement opportunity, the RSTD measurement result is expressed as the arrival time of reference signal subframes of multiple cells or the difference of arrival time of reference signal subframes of multiple cells relative to the arrival time of positioning reference cells, and the RSTD of multiple cells The reference signal subframe arrival time or the reference signal subframe arrival time difference of multiple cells relative to the positioning reference cell arrival time is sent to the management unit 22;

The management unit 22 is configured to perform radio resource management according to the arrival time of reference signal subframes or the difference in arrival time of reference signal subframes of multiple cells.

Optionally, the radio resource management above includes any combination of the following items: assisting the terminal to determine a downlink assisted multipoint transmission CoMP measurement set, assisting the terminal to determine whether multiple cells of multi-carrier aggregation CA are suitable for using the same uplink advance amount TA and determine uplink high interference indication HII.

Optionally, the above RRC signaling may also include:

The RSTD measurement result corresponds to a cell identifier for each cell.

Optionally, when the radio resource management is to select a downlink CoMP measurement set, the management unit 22 is further used to:

Sorting the arrival times of the multiple cell reference signal subframes, looking for the t-th cell and the k-th cell that satisfy |TOA _t -TOA _k |<the first preset threshold, where TOA _t is the reference of the t-th cell Signal subframe arrival time, TOA _k is the reference signal subframe arrival time of the kth cell; then determine that the transmission point corresponding to at least one cell in the tth to kth cells is the UE downlink ComP measurement set, where The first preset threshold is smaller than the length of the current cyclic prefix of the base station.

Optionally, when the radio resource management assists the terminal in determining the determined timing advance set of the multi-carrier aggregation CA, the management unit 22 further includes:

Obtain the time difference between positioning reference signal PRS or cell reference signal CRS sent by each positioning cell and serving cell in multiple cells; find the time difference that satisfies |TOA _i –ΔPRS _i –(TOA _k –ΔPRS _k )|<the second preset threshold The i-th cell and the k-th cell, TOA _i is the arrival time of the reference signal subframe of the i-th cell, TOA _k is the arrival time of the reference signal subframe of the k-th cell, ΔPRS _i is the arrival time of the i-th cell and the serving cell The time difference between sending the positioning reference signal PRS or the cell reference signal CRS, ΔPRS _k is the time difference between the k-th cell and the serving cell sending the positioning reference signal PRS or the cell reference signal CRS; when the i-th cell and the k-th cell are in different When the uplink resource on the frequency layer serves the terminal at the same time, the same uplink timing advance TA is used for the i-th cell and the k-th cell.

Optionally, when the radio resource management indicates HII for uplink high interference, the management unit 22 further includes:

Obtain the time difference between each positioning cell and the serving cell in the plurality of cells for sending the positioning reference signal PRS or cell reference signal CRS; obtain the uplink timing advance TA of the terminal, and estimate the terminal according to the uplink transmission power of the terminal The uplink interference range of the terminal, judge whether the distance from the terminal to each base station is smaller than the uplink interference range of the terminal according to the uplink timing advance amount of the terminal, the uplink interference range and the uplink interference range, for example, the distance from the terminal to the base station of cell i is smaller than the uplink interference range of the terminal In the interference range, the uplink high interference indication UL HII in the X2 interface is used to notify the base station of cell i that there is interference on the resource scheduled by the terminal.

The base station provided by the embodiment of the present invention directly sends TOA or RSTD to the base station through RRC signaling, and the base station directly performs RRM management, which reduces the transmission delay from the UE to the service terminal positioning center, and the calculation and processing time of the service terminal positioning center The delay is the delay from the service terminal positioning center to the serving base station, so it has the advantage of small transmission delay.

An embodiment of the present invention also provides a method for supporting a base station to perform wireless resource management, as shown in FIG. 3 , including:

S31. The RSTD measurement result obtained after the reference signal arrival time difference RSTD measurement in one or more positioning reference signal positioning measurement opportunities is completed, and the RSTD measurement result is expressed as the arrival time of multiple cell reference signal subframes or the relative The reference signal arrival time difference of the positioning reference cell arrival time;

S32. Send RRC signaling to the base station, where the RRC signaling includes: RSTD measurement results of one or more positioning reference signal positioning measurement opportunities.

The method provided by the embodiment of the present invention sends RRC signaling to the base station so that the base station performs RRM management through the TOA or RSTD connection of the RRC signaling, which reduces the transmission delay from the UE to the service terminal positioning center, and the service terminal positioning center The calculation and processing delay of the service terminal location center to the service base station delay, so it has the advantage of small transmission delay.

The embodiment of the present invention also provides a terminal, as shown in Figure 4, including:

The measuring unit 41 is used to obtain the RSTD measurement result obtained after one or more positioning reference signal positioning measurement opportunities are completed. The reference signal arrival time difference of the relative positioning reference cell arrival time of multiple cells;

The sending unit 42 is configured to send RRC signaling to the base station, where the RRC signaling includes: RSTD measurement results of one or more positioning reference signal positioning measurement opportunities.

Optionally, the above terminal also includes:

The receiving instruction unit 43 is configured to control the sending unit 32 to send RRC signaling through the QoS level indication or direct indication in the positioning request when the received positioning request is based on the radio resource management service.

The terminal provided by the embodiment of the present invention sends RRC signaling to the base station so that the base station performs RRM management through the TOA or RSTD connection of the RRC signaling, which reduces the transmission delay from the UE to the service terminal positioning center, and the service terminal positioning center The calculation and processing delay of the service terminal location center to the service base station delay, so it has the advantage of small transmission delay.

In the above units and system embodiments, the included modules or units are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional module are also It is only for the convenience of distinguishing each other, and is not intended to limit the protection scope of the present invention.

Those skilled in the art can understand that all or part of the steps of the technical solutions provided by the embodiments of the present invention can be completed by program instructions and related hardware. For example, it can be completed by running a program on a computer. The program can be stored in a readable storage medium, such as random access memory, magnetic disk, optical disk, etc.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (14)

1. a management method for Radio Resource, is characterized in that, described method comprises:

The reference signal time of advent poor RSTD of receiving terminal in completing one or many location reference signals location survey chance sends radio resource control RRC signaling after measuring, wherein said RRC signaling comprises: the RSTD measurement result of one or many location reference signals location survey chance, and it is poor the time of advent that described RSTD measurement result is expressed as the reference signal of a plurality of cell reference signals subframe TOA time of advent or relative positioning reference cell, a plurality of community time of advent;

According to the reference signal subframe time of advent of a plurality of communities or the reference signal poor RRM that the carries out time of advent.

2. method according to claim 1, it is characterized in that, described RRM comprises following every middle combination in any: auxiliary described terminal is determined descending assistance multicast communication CoMP measuring assembly, assisted described terminal to determine whether a plurality of communities of multi-carrier polymerizing CA are applicable to adopting identical up lead TA and determine up high interference indication HII.

3. method according to claim 1, is characterized in that, described RRC signaling also comprises:

The cell identifier that RSTD measurement result is corresponding with each community and frequency layer information.

4. according to the method described in any one in claim 1-3, it is characterized in that, when RRM is determined descending CoMP measuring assembly for auxiliary described terminal, the described reference signal subframe according to a plurality of communities is carried out RRM and comprise the time of advent:

Reference signal subframe to described a plurality of communities sorts the time of advent, finds and meets | TOA<sub TranNum="204">t</sub>-TOA<sub TranNum="205">k</sub>| t community and k the community of the<the first default thresholding, TOA<sub TranNum="206">t</sub>the reference signal subframe time of advent of t community, TOA<sub TranNum="207">k</sub>it is the reference signal subframe time of advent of k community; Determine that individual transfer point corresponding at least one community to k community of t is the descending ComP measuring assembly of described UE, wherein the first default thresholding is less than the length of the current Cyclic Prefix in base station.

5. according to the method described in any one in claim 1-3, it is characterized in that, when RRM, for auxiliary described terminal, determine multi-carrier polymerizing CA and really fix time while gathering in advance, described reference signal time of advent according to a plurality of communities is poor carries out RRM and comprises:

Obtain the time difference that each cell of origin in a plurality of communities and Serving cell send location reference signals PRS or cell reference signals CRS;

Find and meet | TOA<sub TranNum="212">i</sub>– Δ PRS<sub TranNum="213">i</sub>– (TOA<sub TranNum="214">k</sub>– Δ PRS<sub TranNum="215">k</sub>) | i community and k the community of the<the second default thresholding, TOA<sub TranNum="216">i</sub>the reference signal subframe time of advent of i community, TOA<sub TranNum="217">k</sub>the reference signal subframe time of advent of k community, Δ PRS<sub TranNum="218">i</sub>the time difference that i community and Serving cell send location reference signals PRS or cell reference signals CRS, Δ PRS<sub TranNum="219">k</sub>it is the time difference that k community and Serving cell send location reference signals PRS or cell reference signals CRS; When i community and k community have respectively ascending resource on different frequency layer simultaneously for described Terminal Service, i community and k community are adopted to identical up Timing Advance TA.

6. according to the method described in any one in claim 1-3, it is characterized in that, when RRM is up high interference indication HII, described according to the reference signal subframe time of advent of a plurality of communities or reference signal time of advent poorly carrying out RRM and comprise:

Obtain the time difference that each cell of origin in a plurality of communities and Serving cell send location reference signals PRS or cell reference signals CRS;

Obtain the up Timing Advance TA of described terminal;

According to the uplink transmission power of described terminal, estimate the uplink interference scope of described terminal, according to the uplink interference scope of the up Timing Advance of described terminal and terminal, judge whether the distance of terminal Dao Ge base station is less than the uplink interference scope of terminal, as terminal is less than the uplink interference scope of terminal to the distance of the base station of cell i, in the resource by terminal scheduling described in the base station of the up high interference indication HII， notifying cell i in X2 interface, exist and disturb.

7.Yi Zhong base station, is characterized in that, described base station comprises:

Receiving element, for receiving terminal, at the reference signal poor RSTD time of advent that completes one or many location reference signals location survey chance, after measuring, send radio resource control RRC signaling, wherein this RRC signaling comprises: the RSTD measurement result of one or many location reference signals location survey chance, described RSTD measurement result is expressed as the reference signal subframe time of advent of a plurality of communities or the reference signal of relative positioning reference cell, a plurality of community time of advent is poor the time of advent, and by the reference signal subframe time of advent of described a plurality of communities or the reference signal poor administrative unit that the sends to time of advent,

Administrative unit, for according to the reference signal subframe time of advent of a plurality of communities or reference signal time of advent the poor RRM that carries out.

8. base station according to claim 7, it is characterized in that, described RRM comprises following every middle combination in any: auxiliary described terminal is determined descending assistance multicast communication CoMP measuring assembly, assisted described terminal to determine whether a plurality of communities of multi-carrier polymerizing CA are applicable to adopting identical up lead TA and determine up high interference indication HII.

9. base station according to claim 7, is characterized in that, described RRC signaling also comprises:

The cell identifier that RSTD measurement result is corresponding with each community and frequency layer information.

10. base station according to claim 9, is characterized in that, when RRM is that while selecting descending CoMP measuring assembly, described administrative unit is further used for:

Reference signal subframe to described a plurality of communities sorts the time of advent, finds and meets | TOA<sub TranNum="237">t</sub>– TOA<sub TranNum="238">k</sub>| t community and k the community of the<the first default thresholding, TOA<sub TranNum="239">t</sub>the reference signal subframe time of advent of t community, TOA<sub TranNum="240">k</sub>it is the reference signal subframe time of advent of k community; Determine that individual transfer point corresponding at least one community to k community of t is the descending ComP measuring assembly of described terminal, wherein the first default thresholding is less than the length of the current Cyclic Prefix in base station.

11. base stations according to claim 9, is characterized in that, determine multi-carrier polymerizing CA really fix time while gathering in advance when the auxiliary described terminal of RRM, and described administrative unit further comprises:

Obtain the time difference that each cell of origin in a plurality of communities and Serving cell send location reference signals PRS or cell reference signals CRS; Find and meet | TOA<sub TranNum="244">i</sub>-Δ PRS<sub TranNum="245">i</sub>(TOA<sub TranNum="246">k</sub>-Δ PRS<sub TranNum="247">k</sub>) | i community and k the community of the<the second default thresholding, TOA<sub TranNum="248">i</sub>the reference signal subframe time of advent of i community, TOA<sub TranNum="249">k</sub>the reference signal subframe time of advent of k community, Δ PRS<sub TranNum="250">i</sub>be the time difference that i community and Serving cell send location reference signals PRS or cell reference signals CRS, Δ PRSk is the time difference that k community and Serving cell send location reference signals PRS or cell reference signals CRS; When i community and k community have respectively ascending resource on different frequency layer simultaneously for described Terminal Service, i community and k community are adopted to identical up Timing Advance TA.

12. base stations according to claim 9, is characterized in that, when RRM is up high interference indication HII, described administrative unit further comprises:

Obtain the time difference that each cell of origin in a plurality of communities and Serving cell send location reference signals PRS or cell reference signals CRS; Obtain the up Timing Advance TA of described terminal, according to the uplink transmission power of described terminal, estimate the uplink interference scope of described terminal, according to the uplink interference scope of the up Timing Advance of described terminal and terminal and uplink interference scope, judge whether the distance of terminal Dao Ge base station is less than the uplink interference scope of terminal, as terminal is less than the uplink interference scope of terminal to the distance of the base station of cell i, in the resource by terminal scheduling described in the base station of the up high interference indication HII， notifying cell i in X2 interface, exist and disturb.

Support base station to carry out the method for RRM for 13. 1 kinds, it is characterized in that, described method comprises:

The RSTD measurement result that reference signal time of advent, poor RSTD obtained after measuring in completing one or many location reference signals location survey chance, it is poor the time of advent that described RSTD measurement result is expressed as the reference signal of a plurality of cell reference signals subframe times of advent or relative positioning reference cell, a plurality of community time of advent;

To base station, send RRC signaling, described RRC signaling comprises: the RSTD measurement result of one or many location reference signals location survey chance.

14. 1 kinds of terminals, is characterized in that, described terminal comprises:

Measuring unit, for the RSTD measurement result that the reference signal time of advent completing one or many location reference signals location survey chance, poor RSTD obtained after measuring, it is poor the time of advent that described RSTD measurement result is expressed as the reference signal of a plurality of cell reference signals subframe times of advent or relative positioning reference cell, a plurality of community time of advent;

Transmitting element, for send RRC signaling to base station, described RRC signaling comprises: the RSTD measurement result of one or many location reference signals location survey chance.

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