CN103997774B - Reduce the method and user equipment of user equipment power consumption - Google Patents

Reduce the method and user equipment of user equipment power consumption Download PDF

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Publication number
CN103997774B
CN103997774B CN201410209051.5A CN201410209051A CN103997774B CN 103997774 B CN103997774 B CN 103997774B CN 201410209051 A CN201410209051 A CN 201410209051A CN 103997774 B CN103997774 B CN 103997774B
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cell
mrow
work song
signal
timing offset
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CN103997774A (en
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魏璟鑫
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the present invention provides a kind of method and user equipment for reducing user equipment power consumption, and methods described includes：Whether, when UE carries out homogeneous-frequency adjacent-domain search, the UE obtains timing offset sign corresponding to the same frequent point, be synchronized cells according to each cell in multiple cells corresponding to the timing offset sign determination same point again and again；If each cell is synchronized cells, the UE receives the signal in the preset time of the serving cell within the search cycle, times of the UE within the search cycle in addition to the preset time closes radio frequency operation unit, and the preset time is the subframe or orthogonal frequency duplex OFDM symbol where the master sync signal and the auxiliary synchronous signals.UE just opens radio frequency operation unit within the search cycle during reception signal, close radio frequency operation unit at other moment, therefore, the method for the present embodiment can shorten the opening time of UE radio frequency operation units, so as to reduce UE power consumption.

Description

Reduce the method and user equipment of user equipment power consumption
Technical field
The present embodiments relate to the communication technology, more particularly to a kind of method for reducing user equipment power consumption and user to set It is standby.
Background technology
In Long-Term Evolution system (Long Term Evolution, abbreviation LTE), user equipment (User Equipment, abbreviation UE) using master sync signal (Primary Synchronization Signal, abbreviation PSS) and it is auxiliary together Walk signal (Secondary Synchronization Signal, abbreviation SSS) and complete adjacent area search, adjacent area search is included with frequency Adjacent area is searched for and the search of alien frequencies adjacent area.Each cell each cycle, such as 5ms, can all send PSS and SSS, specifically, frequency division is double In work (Frequency Division Duplexing, abbreviation FDD) system, each cell sends PSS, time-division in the 0th, 5 subframes In duplexing (Time Division Duplexing, abbreviation TDD) system, each cell sends PSS in the 1st, 6 subframes, no matter FDD System or TDD system, each cell all send SSS in low 0,5 subframes.
UE is also required to carry out homogeneous-frequency adjacent-domain during discontinuous reception (Discontinuous Reception, abbreviation DRX) Search or the search of alien frequencies adjacent area, in the prior art, UE at least needs to receive whole 5ms data when carrying out adjacent area search, also It is to say that UE at least needs to receive the data of at least five subframe, wherein each subframe is 1ms, receiving 5ms data means penetrating for UE (transceiver) will at least open 5ms for frequency working cell, and radio frequency operation unit occupies very in UE DRX stand-by power consumptions Large scale, so as to cause UE stand-by power consumption to increase.In fact, PSS and SSS signals are simply carried in the subframe of part, thus Existing method of reseptance can cause to waste under some scenes.
The content of the invention
The embodiment of the present invention provides a kind of method and user equipment for reducing user equipment power consumption, can reduce user equipment Power consumption.
First aspect present invention provides a kind of method for reducing user equipment power consumption, including
When user equipment (UE) carries out homogeneous-frequency adjacent-domain search, the UE obtains described with timing offset mark again and again corresponding to point To show, whether each cell is synchronized cells in multiple cells according to corresponding to timing offset sign determines the same point again and again, The timing offset is indicated for indicating that each cell is synchronized cells or asynchronous cell；
If each cell is synchronized cells, the UE receives serving cell in the multiple cell within the search cycle Signal in preset time, times of the UE within the search cycle in addition to the preset time close radio frequency operation list Member, the preset time are the subframe where the master sync signal and the auxiliary synchronous signals or orthogonal frequency division multiplex OFDM symbol Number.
With reference to first aspect present invention, in the first possible implementation of first aspect present invention, as the UE For FDD terminal when, the master sync signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, The UE receives the signal in the preset time of the serving cell within the search cycle, including：
The UE received within the search cycle serving cell any one 0 work song frame or any one No. 5 Signal in subframe；
Or
The UE received within the search cycle serving cell any one 0 work song frame or any one No. 5 Signal in the specific OFDM symbol of subframe, the specific OFDM symbol are the master sync signal and auxiliary synchronous signals institute OFDM symbol.
With reference to first aspect present invention, in second of possible implementation of first aspect present invention, as the UE For TDD terminal when, the master sync signal be included in 1 work song frame and 6 work song frames in, the auxiliary synchronous signals include In 0 work song frame and 5 work song frames, the UE receives the signal in the preset time of the serving cell within the search cycle, bag Include：
The UE is received within the search cycle in any one group of 0 work song frame and 1 work song frame of the serving cell Signal, or the UE are received within the search cycle in any one group of 5 work song frames and 6 work song frames of the serving cell Signal, wherein, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
Or
The UE receives any one group of 0 work song frame and the spy of 1 work song frame of the serving cell within the search cycle Determine the signal in OFDM symbol, or, the UE receives any one group of 5 work songs of the serving cell within the search cycle Signal in the specific OFDM symbol of frame and 6 work song frames, wherein, the specific OFDM symbol is the master sync signal and described OFDM symbol where auxiliary synchronous signals, the 0 work song frame and the 1 work song frame are continuous, the 5 work song frame and 6 work song Frame is continuous.
With reference to the first of first aspect present invention and first aspect and second of possible implementation, in the present invention In the third possible implementation of first aspect, the UE obtains the same timing offset corresponding to point again and again and indicates it Before, in addition to：
The UE configures the timing offset sign.
With reference to the third possible implementation of first aspect present invention, in the 4th kind of possibility of first aspect present invention Implementation in, the UE configures the timing offset sign, including：
If the UE is TDD terminal, the UE configures the timing offset and is denoted as indicating each cell For synchronized cells.
With reference to the third possible implementation of first aspect present invention, in the 5th kind of possibility of first aspect present invention Implementation in, the UE configures the timing offset sign, including：
If the UE is FDD terminal, the UE matches somebody with somebody when indicating progress initial configuration to the timing offset The timing offset is put to be denoted as indicating that each cell is asynchronous cell.
With reference to the 5th kind of possible implementation of first aspect present invention, in the 6th kind of possibility of first aspect present invention Implementation in, for the UE after being indicated to the timing offset and carrying out initial configuration, it is inclined that the UE configures the timing Difference sign also includes：
When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without described with frequency When adjacent area is searched for, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells；
Or when the UE carries out the homogeneous-frequency adjacent-domain search, if timing offset sign indicates each cell For asynchronous cell, and the homogeneous-frequency adjacent-domain search result according to corresponding to the asynchronous cell judges that the timing of each cell that searches is inclined When difference is less than timing offset threshold value, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells.
With reference to the 6th kind of possible implementation of first aspect present invention, in the 7th kind of possibility of first aspect present invention Implementation in, the UE, which configures the timing offset sign, also to be included：
After the UE searches in every j homogeneous-frequency adjacent-domain, configure the timing offset and be denoted as indicating that each cell is Asynchronous cell, j are the positive integer more than or equal to 1.
With reference to the first of first aspect present invention and first aspect to the 7th kind of possible implementation, in the present invention In 8th kind of possible implementation of first aspect, the signal bag in the multiple cell in the preset time of serving cell Include：The master sync signal and auxiliary synchronous signals of serving cell, and in the multiple cell the master sync signal of other cells and Auxiliary synchronous signals.
Second aspect of the present invention provides a kind of method for reducing user equipment power consumption, including：
When user equipment (UE) carries out the search of alien frequencies adjacent area, result that the UE searches for according to the alien frequencies adjacent area determines different Again and again point whether there is benchmark cell；
If the alien frequencies frequency has benchmark cell, the UE obtains timing offset sign corresponding to the alien frequencies frequency, Whether each cell is synchronized cells in multiple cells according to corresponding to timing offset sign determines the alien frequencies frequency, described Timing offset is indicated for indicating that each cell is synchronized cells or asynchronous cell；
If each cell is synchronized cells, the UE receives benchmark cell in the multiple cell within the search cycle Signal in preset time, times of the UE within the search cycle in addition to the preset time close radio frequency operation list Member, the preset time are the subframe where the master sync signal and the auxiliary synchronous signals or orthogonal frequency division multiplex OFDM symbol Number.
With reference to second aspect of the present invention, in the first possible implementation of second aspect of the present invention, as the UE For FDD terminal when, the master sync signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, The UE receives the signal in the preset time of the benchmark cell within the search cycle, including：
The UE receives any one 0 work song frame or any one 5 work song frame of the benchmark cell within the search cycle Interior signal；
Or
The UE receives any one 0 work song frame or any one 5 work song frame of the benchmark cell within the search cycle Specific OFDM symbol in signal, where the specific OFDM symbol is the master sync signal and the auxiliary synchronous signals OFDM symbol.
With reference to second aspect of the present invention, in second of possible implementation of second aspect of the present invention, as the UE For TDD terminal when, the master sync signal be included in 1 work song frame and 6 work song frames in, the auxiliary synchronous signals include In 0 work song frame and 5 work song frames, the UE receives the signal in the preset time of the benchmark cell within the search cycle, bag Include：
The UE is received within the search cycle in any one group of 0 work song frame and 1 work song frame of the benchmark cell Signal, or, the UE is received within the search cycle in any one group of 5 work song frames and 6 work song frames of the benchmark cell Signal, wherein, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
Or
The UE receives any one group of 0 work song frame and the spy of 1 work song frame of the benchmark cell within the search cycle Determine the signal in OFDM symbol, or, the UE receives any one group of 5 work songs of the benchmark cell within the search cycle Signal in the specific OFDM symbol of frame and 6 work song frames, the specific OFDM symbol are the master sync signal and described auxiliary same The OFDM symbol where signal is walked, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame connect It is continuous.
With reference to the first of second aspect of the present invention and second aspect and second of possible implementation, in the present invention In the third possible implementation of second aspect, the result that the UE searches for according to the alien frequencies adjacent area determines alien frequencies frequency With the presence or absence of benchmark cell, including：
It is corresponding that UE master sync signals of each cell according to corresponding to the alien frequencies frequency calculate each cell respectively Master sync signal normalized crosscorrelation value, and the auxiliary synchronous signals of each cell are counted respectively according to corresponding to the alien frequencies frequency Calculate auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell；
The UE judges to whether there is at least one cell to be selected in each cell corresponding to the alien frequencies frequency, each to be selected The master sync signal normalized crosscorrelation value of cell is more than default master sync signal normalized crosscorrelation threshold value, and described The auxiliary synchronous signals normalized crosscorrelation value of each cell to be selected is more than default auxiliary synchronous signals normalized crosscorrelation threshold value；
If at least one cell to be selected is not present in each cell corresponding to the alien frequencies frequency, the UE determines described different Again and again benchmark cell is not present in point；
If at least one cell to be selected in each cell corresponding to the alien frequencies frequency be present, the UE determines the alien frequencies There is benchmark cell in frequency, the UE chooses a cell as the benchmark cell from least one cell to be selected.
With reference to the third possible implementation of second aspect of the present invention, in the 4th kind of possibility of second aspect of the present invention Implementation in, the UE chooses a cell as the benchmark cell from least one cell to be selected, including：
The UE chooses master sync signal normalized value or auxiliary synchronous signals normalizing from least one cell to be selected The maximum cell of change value is as the benchmark cell；
Or the UE chooses master sync signal normalized value and auxiliary synchronous signals normalized value from the cell to be selected The maximum cell of sum is as the benchmark cell.
With reference to the third and the 4th kind of possible implementation of second aspect of the present invention, the of second aspect of the present invention In five kinds of possible implementations, UE master sync signals of each cell according to corresponding to the alien frequencies frequency calculate institute respectively State master sync signal normalized crosscorrelation value corresponding to each cell, and according to corresponding to the alien frequencies frequency each cell it is auxiliary same Step signal calculates auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell respectively, including：
UE master sync signal normalized crosscorrelation values according to corresponding to formula (1) calculates each cell step1Ratio：
Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0, 1 ..., NR- 1,For time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is the cell to be calculated Master sync signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length Degree, pss*(n) conjugation for being pss (n), L=64, M=2；
UE auxiliary synchronous signals normalized crosscorrelation values according to corresponding to formula (2) calculates each cell step2Ratio：
Wherein,For time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) waits to count to be described Calculate the time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
With reference to the first of second aspect of the present invention and second aspect to the 5th kind of possible implementation, in the present invention In 6th kind of possible implementation of second aspect, timing offset corresponding to the UE acquisitions alien frequencies frequency indicates it Before, methods described also includes：
The UE configures the timing offset sign.
With reference to the 6th kind of possible implementation of second aspect of the present invention, in the 7th kind of possibility of second aspect of the present invention Implementation in, the UE configures the timing offset sign, including：
If the UE is TDD terminal, the UE configures the timing offset and is denoted as indicating each cell For synchronized cells.
With reference to the 6th kind of possible implementation of second aspect of the present invention, in the 8th kind of possibility of second aspect of the present invention Implementation in, the UE configures the timing offset sign, including：
If the UE is FDD terminal, the UE matches somebody with somebody when indicating progress initial configuration to the timing offset The timing offset is put to be denoted as indicating that each cell is asynchronous cell.
With reference to the 8th kind of possible implementation of second aspect of the present invention, in the 9th kind of possibility of second aspect of the present invention Implementation in, for the UE after being indicated to the timing offset and carrying out initial configuration, it is inclined that the UE configures the timing Difference sign also includes：
When the UE carries out the alien frequencies adjacent area search, if timing offset sign indicates that each cell is asynchronous Cell, and the timing offset of each cell that the alien frequencies adjacent area search result according to corresponding to the asynchronous cell judges to search is less than During timing offset threshold value, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells.
With reference to the 9th kind of possible implementation of second aspect of the present invention, in the tenth kind of possibility of second aspect of the present invention Implementation in, the UE, which configures the timing offset sign, also to be included：
After the UE searches in every j alien frequencies adjacent area, configure the timing offset and be denoted as indicating that each cell is Asynchronous cell, j are the positive integer more than or equal to 1.
With reference to the first of second aspect of the present invention and second aspect to the tenth kind of possible implementation, in the present invention In a kind of tenth possible implementation of second aspect, the signal bag in the multiple cell in the preset time of benchmark cell Include：The master sync signal and auxiliary synchronous signals of benchmark cell, and in the multiple cell the master sync signal of other cells and Auxiliary synchronous signals.
Third aspect present invention provides a kind of user equipment (UE), including
Acquisition module, it is inclined for when the UE carries out homogeneous-frequency adjacent-domain search, obtaining timing corresponding to the same point again and again Difference sign, the timing offset are indicated for indicating that each cell is synchronized cells or asynchronous cell；
Determining module, for each small in multiple cells according to corresponding to the timing offset sign determination same point again and again Whether area is synchronized cells；
Receiving module, if being synchronized cells for each cell, receive within the search cycle and taken in the multiple cell Signal in the preset time for cell of being engaged in, the time within the search cycle in addition to the preset time close radio frequency operation list Member, the preset time are the subframe where the master sync signal and the auxiliary synchronous signals or orthogonal frequency division multiplex OFDM symbol Number.
With reference to third aspect present invention, in the first possible implementation of third aspect present invention, as the UE For FDD terminal when, the master sync signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, The receiving module is specifically used for：
Received within the search cycle in any one 0 work song frame or any one 5 work song frame of the serving cell Signal；
Or
Any one 0 work song frame or any one 5 work song frame of the serving cell are received within the search cycle Signal in specific OFDM symbol, the specific OFDM symbol is where the master sync signal and the auxiliary synchronous signals OFDM symbol.
With reference to third aspect present invention, in second of possible implementation of third aspect present invention, as the UE For TDD terminal when, the master sync signal be included in 1 work song frame and 6 work song frames in, the auxiliary synchronous signals include In 0 work song frame and 5 work song frames, the receiving module is specifically used for：
The signal in any one group of 0 work song frame and 1 work song frame of the serving cell is received within the search cycle, or Person receives the signal in any one group of 5 work song frames and 6 work song frames of the serving cell within the search cycle, wherein, institute State 0 work song frame and the 1 work song frame is continuous, the 5 work song frame and the 6 work song frame are continuous；
Or
Any one group of 0 work song frame of the serving cell and the specific OFDM of 1 work song frame are received within the search cycle Signal in symbol, or, any one group of 5 work song frames and 6 work song frames of the serving cell are received within the search cycle Specific OFDM symbol in signal, wherein, the specific OFDM symbol is the master sync signal and the auxiliary synchronous signals The OFDM symbol at place, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous.
With reference to the first of third aspect present invention and the third aspect and second of possible implementation, in the present invention In the third possible implementation of the third aspect, the UE also includes：
Configuration module, for configuring the timing offset sign.
With reference to the third possible implementation of third aspect present invention, in the 4th kind of possibility of third aspect present invention Implementation in, the configuration module is specifically used for：
If the UE is TDD terminal, configures the timing offset and be denoted as indicating that each cell is same Walk cell.
With reference to the third possible implementation of third aspect present invention, in the 5th kind of possibility of third aspect present invention Implementation in, the configuration module is specifically used for：
If the UE is FDD terminal, when indicating progress initial configuration to the timing offset, institute is configured Timing offset is stated to be denoted as indicating that each cell is asynchronous cell.
With reference to the 5th kind of possible implementation of third aspect present invention, in the 6th kind of possibility of third aspect present invention Implementation in, the configuration module to the timing offset indicate carry out initial configuration after be additionally operable to：
When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without described with frequency When adjacent area is searched for, configure the timing offset and be denoted as indicating that each cell is synchronized cells；
Or when the UE carries out the homogeneous-frequency adjacent-domain search, if timing offset sign indicates each cell For asynchronous cell, and UE homogeneous-frequency adjacent-domain search results according to corresponding to the asynchronous cell judge each cell for searching Timing offset when being less than timing offset threshold value, configure the timing offset and be denoted as indicating that each cell is synchronized cells.
With reference to the 6th kind of possible implementation of third aspect present invention, in the 7th kind of possibility of third aspect present invention Implementation in, the configuration module is additionally operable to：
After being searched in every j homogeneous-frequency adjacent-domain, configure the timing offset and be denoted as indicating that each cell is asynchronous small Area, j are the positive integer more than or equal to 1.
With reference to the first of third aspect present invention and the third aspect to the 7th kind of possible implementation, in the present invention In 8th kind of possible implementation of the third aspect, the signal bag in the multiple cell in the preset time of serving cell Include：The master sync signal and auxiliary synchronous signals of serving cell, and in the multiple cell the master sync signal of other cells and Auxiliary synchronous signals.
Fourth aspect present invention provides a kind of user equipment (UE), including：
First determining module, for the knot when the UE carries out the search of alien frequencies adjacent area, searched for according to the alien frequencies adjacent area Fruit determines that alien frequencies frequency whether there is benchmark cell；
Acquisition module, if benchmark cell be present for the alien frequencies frequency, obtain timing corresponding to the alien frequencies frequency Deviation is indicated, and the timing offset is indicated for indicating that each cell is synchronized cells or asynchronous cell；
Second determining module, in multiple cells according to corresponding to the timing offset sign determination alien frequencies frequency Whether each cell is synchronized cells；
Receiving module, if being synchronized cells for each cell, base in the multiple cell is received within the search cycle Signal in the preset time of quasi- cell, the time within the search cycle in addition to the preset time close radio frequency operation list Member, the preset time are the subframe where the master sync signal and the auxiliary synchronous signals or orthogonal frequency division multiplex OFDM symbol Number.
With reference to fourth aspect present invention, in the first possible implementation of fourth aspect present invention, as the UE For FDD terminal when, the master sync signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, The receiving module is specifically used for：
The letter in any one 0 work song frame or any one 5 work song frame of the benchmark cell is received within the search cycle Number；
Or
Received within the search cycle benchmark cell any one 0 work song frame or any one 5 work song frame it is specific Signal in OFDM symbol, the specific OFDM symbol are the OFDM symbols where the master sync signal and the auxiliary synchronous signals Number.
With reference to fourth aspect present invention, in second of possible implementation of fourth aspect present invention, as the UE For TDD terminal when, the master sync signal be included in 1 work song frame and 6 work song frames in, the auxiliary synchronous signals include In 0 work song frame and 5 work song frames, the receiving module is specifically used for：
The signal in any one group of 0 work song frame and 1 work song frame of the benchmark cell is received within the search cycle, or Person, the signal in any one group of 5 work song frames and 6 work song frames of the benchmark cell is received within the search cycle, wherein, institute State 0 work song frame and the 1 work song frame is continuous, the 5 work song frame and the 6 work song frame are continuous；
Or
Any one group of 0 work song frame of the benchmark cell and the specific OFDM of 1 work song frame are received within the search cycle Signal in symbol, or, any one group of 5 work song frames and 6 work song frames of the benchmark cell are received within the search cycle Specific OFDM symbol in signal, where the specific OFDM symbol is the master sync signal and the auxiliary synchronous signals OFDM symbol, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous.
With reference to the first of fourth aspect present invention and fourth aspect and second of possible implementation, in the present invention In the third possible implementation of fourth aspect, first determining module specifically includes：
Computing unit, the master sync signal for each cell according to corresponding to the alien frequencies frequency calculate described each small respectively Master sync signal normalized crosscorrelation value corresponding to area, and according to corresponding to the alien frequencies frequency each cell auxiliary synchronous signals Auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell is calculated respectively；
Judging unit, for judging to whether there is at least one cell to be selected in each cell corresponding to the alien frequencies frequency, The master sync signal normalized crosscorrelation value of each cell to be selected is more than default master sync signal normalized crosscorrelation threshold value, And it is mutual that the auxiliary synchronous signals normalized crosscorrelation value of each cell to be selected is more than the normalization of default auxiliary synchronous signals Shutdown limit value；
Benchmark cell determining unit, if at least one to be selected small for being not present in each cell corresponding to the alien frequencies frequency Area, it is determined that benchmark cell is not present in the alien frequencies frequency, if existing in each cell corresponding to the alien frequencies frequency at least one Cell to be selected, it is determined that the alien frequencies frequency has benchmark cell, and selection is one small from least one cell to be selected Area is as the benchmark cell.
With reference to the third possible implementation of fourth aspect present invention, in the 4th kind of possibility of fourth aspect present invention Implementation in, the benchmark cell determining unit is specifically used for：
Master sync signal normalized value or auxiliary synchronous signals normalized value are chosen from least one cell to be selected most Big cell is as the benchmark cell；
Or choose master sync signal normalized value and auxiliary synchronous signals normalized value sum most from the cell to be selected Big cell is as the benchmark cell.
With reference to the third and the 4th kind of possible implementation of fourth aspect present invention, the of fourth aspect present invention In five kinds of possible implementations, the computing unit is specifically used for：
The master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0, 1 ..., NR- 1, ri pss(n) it is time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is the cell to be calculated Master sync signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length Degree, pss*(n) conjugation for being pss (n), L=64, M=2；
The auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
Wherein, ri sss(n) it is time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) treats to be described Calculate the time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
With reference to the first of fourth aspect present invention and fourth aspect to the 5th kind of possible implementation, in the present invention In 6th kind of possible implementation of fourth aspect, the UE also includes：
Configuration module, for configuring the timing offset sign.
With reference to the 6th kind of possible implementation of fourth aspect present invention, in the 7th kind of possibility of fourth aspect present invention Implementation in, the configuration module is specifically used for：
If the UE is TDD terminal, configures the timing offset and be denoted as indicating that each cell is same Walk cell.
With reference to the 6th kind of possible implementation of fourth aspect present invention, in the 8th kind of possibility of fourth aspect present invention Implementation in, the configuration module is specifically used for：
If the UE is FDD terminal, when indicating progress initial configuration to the timing offset, institute is configured Timing offset is stated to be denoted as indicating that each cell is asynchronous cell.
With reference to the 8th kind of possible implementation of fourth aspect present invention, in the 9th kind of possibility of fourth aspect present invention Implementation in, the configuration module is additionally operable to：
When the UE carries out the alien frequencies adjacent area search, if timing offset sign indicates that each cell is asynchronous Cell, and UE alien frequencies adjacent area search results according to corresponding to the asynchronous cell judge the timing of each cell that searches When deviation is less than timing offset threshold value, configures the timing offset and be denoted as indicating that each cell is synchronized cells.
With reference to the 9th kind of possible implementation of fourth aspect present invention, in the tenth kind of possibility of fourth aspect present invention Implementation in, the configuration module is additionally operable to：
After being searched in every j alien frequencies adjacent area, configure the timing offset and be denoted as indicating that each cell is asynchronous small Area, j are the positive integer more than or equal to 1.
With reference to the first of fourth aspect present invention and fourth aspect to the tenth kind of possible implementation, in the present invention In a kind of tenth possible implementation of fourth aspect, the signal bag in the multiple cell in the preset time of benchmark cell Include：The master sync signal and auxiliary synchronous signals of benchmark cell, and in the multiple cell the master sync signal of other cells and Auxiliary synchronous signals.
The method and user equipment of the reduction user equipment power consumption of the embodiment of the present invention, UE is according to the timing offset mark of acquisition Show determination with when each cell corresponding to point is synchronized cells again and again, only the preset time of serving cell within the search cycle is inscribed UE The collection of letters number, the time within the search cycle in addition to the preset time close radio frequency operation unit, that is, UE is only receiving master together Just unlatching radio frequency operation unit when walking signal and subframe or OFDM symbol where auxiliary synchronous signals, and its within the search cycle He closes radio frequency operation unit the time.And UE needs to receive the signal in all subframes within the search cycle in the prior art, institute Radio frequency operation unit will be opened within the whole search cycle with UE.Therefore, compared to the prior art, the side of the embodiment of the present invention Method can shorten the opening time of radio frequency operation unit, so as to reach the purpose for reducing UE power consumptions.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the embodiment of the method one that the present invention reduces user equipment power consumption；
Fig. 2 is the flow chart for the embodiment of the method two that the present invention reduces user equipment power consumption；
Fig. 3 is the schematic diagram of FDD frame structures；
Fig. 4 is the flow chart for the embodiment of the method three that the present invention reduces user equipment power consumption；
Fig. 5 is the schematic diagram of tdd frame structure；
Fig. 6 is the flow chart for the embodiment of the method four that the present invention reduces user equipment power consumption；
Fig. 7 is the flow chart for the embodiment of the method five that the present invention reduces user equipment power consumption；
Fig. 8 is the flow chart for the embodiment of the method six that the present invention reduces user equipment power consumption；
Fig. 9 is the structural representation for the UE that the embodiment of the present invention seven provides；
Figure 10 is the structural representation for the UE that the embodiment of the present invention eight provides；
Figure 11 is the structural representation for the UE that the embodiment of the present invention nine provides；
Figure 12 is the structural representation for the UE that the embodiment of the present invention ten provides；
Figure 13 is the structural representation for the UE that the embodiment of the present invention 11 provides；
Figure 14 is the structural representation for the UE that the embodiment of the present invention 12 provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the flow chart for the embodiment of the method one that the present invention reduces user equipment power consumption, and the present embodiment mainly illustrates How homogeneous-frequency adjacent-domain reduces UE power consumption when searching for, as shown in figure 1, the method that the present embodiment provides may comprise steps of：
Step 101, when UE carry out homogeneous-frequency adjacent-domain search when, UE obtain with again and again point corresponding to timing offset sign, according to Timing offset sign determines whether with each cell in multiple cells corresponding to point again and again be synchronized cells.
Timing offset is indicated for indicating that with each cell corresponding to point again and again be synchronized cells or asynchronous cell, same frequency Cell synchronization (synchronous) cell is divided into or asynchronous (asynchronous) is small according to the transmitting big I of timing offset Area, (such as launch time is less than specific threshold) is almost launched in each synchronized cells simultaneously in transmission signal, and asynchronous cell exists The transmitting timing offset of each cell can very greatly (such as launch time is more than or equal to specific threshold) during transmission signal.Such as with 0 and 1 represents timing offset sign, represents that each cell is synchronized cells when the value of timing offset sign is 1, works as timing offset It is asynchronous cell that each cell is represented when the value of sign is 0.
If the 102, each cell is synchronized cells, UE received within the search cycle serving cell in multiple cells it is default when In signal, UE times in addition to preset time within the search cycle close radio frequency operation unit, same based on the preset time Walk the subframe or OFDM symbol where signal and auxiliary synchronous signals.
The function of UE reception signals is completed by the radio frequency operation unit, and closes the radio frequency when that need not receive Working cell.Signal in the multiple cell in the preset time of serving cell includes：The master sync signal of serving cell and The master sync signal and auxiliary synchronous signals of other cells in auxiliary synchronous signals, and the multiple cell.
UE completes homogeneous-frequency adjacent-domain according to master sync signal and auxiliary synchronous signals and searched for, and master sync signal and auxiliary synchronous signals Only carry certain orthogonal frequency division multiplexing (the Orthogonal Frequency Division in the part subframe of unlimited frame Multiplexing, abbreviation OFDM) in symbol, therefore, UE can be received only where master sync signal and auxiliary synchronous signals OFDM symbol or subframe, which ensure that, to be received with the master sync signal of each cell and auxiliary synchronous signals corresponding to frequent point, and Whole signals in search cycle need not all be received.Further, since the transmitting timing offset very little between synchronized cells, That is this is almost simultaneously, so UE is only needed with each cell transmission master sync signal and auxiliary synchronous signals corresponding to point again and again The signal in multiple cells in the preset time of serving cell is received within the search cycle, it becomes possible to enough ensure this with frequent Point corresponding to each synchronized cells master sync signal and auxiliary synchronous signals all receive, the preset time using the time of serving cell as Benchmark, the preset time are the subframe or OFDM symbol where the master sync signal and auxiliary synchronous signals of serving cell.
The present embodiment, when UE each cells according to corresponding to the timing offset of acquisition sign determines same point again and again are synchronized cells When, UE only reception signals in the preset time of serving cell within the search cycle, within the search cycle in addition to the preset time Time closes radio frequency operation unit, that is, only the subframe where master sync signal and auxiliary synchronous signals are received or OFDM are accorded with UE Number when just open radio frequency operation unit, and other times within the search cycle close radio frequency operation unit.And in the prior art UE needs to receive the signal in all subframes within the search cycle, so UE will open radio frequency operation within the whole search cycle Unit.Therefore, compared to the prior art, the method for the present embodiment can shorten the opening time of radio frequency operation unit, so as to reach To the purpose for reducing UE power consumptions.
On the basis of above-described embodiment one, the embodiment of the present invention two carries out detailed to the technical scheme described in embodiment one Explanation, the present embodiment using UE as FDD (Frequency Division Duplexing, abbreviation FDD) terminal exemplified by enter Row explanation, when UE is FDD terminals, master sync signal and auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames.Fig. 2 is The present invention reduces the flow chart of the embodiment of the method two of user equipment power consumption, as shown in Fig. 2 the method that the present embodiment provides can be with Comprise the following steps：
Step 201, when UE carry out homogeneous-frequency adjacent-domain search when, UE obtain with again and again point corresponding to timing offset sign, according to Timing offset sign determines whether with each cell in multiple cells corresponding to point again and again be synchronized cells.
Whether each cell is synchronized cells in UE multiple cells according to corresponding to timing offset sign judges same point again and again, if Each cell is synchronized cells, performs step 202, if each cell is asynchronous cell, performs step 203.
Step 202, UE are in search cycle inscribed any one 0 work song frame or any one 5 work song frame for receiving serving cell Interior signal；Or UE is in search cycle inscribed any one 0 work song frame for receiving serving cell or any one 5 work song frame Signal in specific OFDM symbol, the specific OFDM symbol are the OFDM symbol where master sync signal and auxiliary synchronous signals.
This step is performed when this is synchronized cells with each cell corresponding to frequent point, UE is FDD terminals in the present embodiment, Master sync signal and auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames.Therefore, UE only receives clothes within the search cycle Signal in any one 0 work song frame or any one 5 work song frame of cell of being engaged in, or, UE only receives clothes within the search cycle Signal in any one the 0 work song frame for cell of being engaged in or the specific OFDM symbol of any one 5 work song frame, in the search cycle Other signals do not receive, UE not reception signal when close radio frequency operation unit.UE extracts each cell from the signal received Master sync signal and auxiliary synchronous signals, complete homogeneous-frequency adjacent-domain search.
Specifically, if serving cell have sent a 0 work song frame within the search cycle, then UE only receives the 0 work song frame Signal in the specific OFDM symbol of interior signal or the 0 work song frame；If serving cell only have sent one 5 within the search cycle Work song frame, then UE only receives the signal in the specific OFDM symbol of the signal or the 5 work song frame in the 5 work song frame；If service Cell have sent at least one 0 work song frame and at least one 5 work song frame in the search cycle, then UE can be inscribed in the search cycle The signal in any one 0 work song frame or any one 5 work song frame of serving cell is received, or, UE can be within the search cycle Receive the signal in any one 0 work song frame of serving cell or the specific OFDM symbol of any one 5 work song frame.Certainly, UE The signal in all 0 work song frames and/or all 5 work song frames for receiving serving cell can also be inscribed in the search cycle, or, UE exists The signal in all 0 work song frames of serving cell and/or the specific OFDM symbol of all 5 work song frames is only received in search cycle. In possible implementation, UE can be in the search cycle inscribed work song frame of part 0 and/or the work song of part 5 for receiving serving cell Signal in frame, or, UE only receives the work song frame of part 0 of serving cell and/or the spy of the work song frame of part 5 within the search cycle Determine the signal in OFDM symbol, various embodiments of the present invention are limited not to this.
It should be noted that in each embodiment of the present invention, one subframe of reception namely receives to be carried in the subframe Signal.One cell launched or signal transmission namely corresponding to the cell base station launched in the cell or Person's signal transmits.
Started with UE within discontinuous reception (Discontinuous Reception, the abbreviation DRX) cycle and be with frequency search Example, it is assumed that UE starts 1 wheel homogeneous-frequency adjacent-domain search per N number of DRX cycle, and homogeneous-frequency adjacent-domain search uses the number in M 5 milliseconds (ms) According to both the search cycle was 5Mms, and M is positive integer.If UE is FDD terminals, then UE only receives serving cell in 5Mms and sent 0 work song frame and/or 5 work song frames, optionally, UE receive 5Mms in all 0 work song frames and/or 5 work song frames, or UE receive The work song frame of part 0 and/or 5 work song frames in 5Mms, in a kind of preferred embodiment, UE only receives any one 0 work song in 5Mms Frame or 5 work song frames.
In above-mentioned mode, UE only receives the subframe where master sync signal and auxiliary synchronous signals, and in another way In, UE can only receive the OFDM symbol where master sync signal and auxiliary synchronous signals.When UE is FDD terminals, UE receives clothes Any one 0 work song frame or the specific OFDM symbol of any one 5 work song frame that business cell is sent within the search cycle, this is specific OFDM symbol is the OFDM symbol where master sync signal and auxiliary synchronous signals.Fig. 3 is refer to, Fig. 3 is the signal of FDD frame structures Figure, in FDD frames, a radio frames include 10 subframes, and numbering is respectively 0-9, and each subframe includes two time slots, Mei Geshi Gap includes 6 or 7 OFDM symbols, and auxiliary synchronous signals are included in the second from the bottom of first time slot of 0 work song frame and 5 work song frames In individual OFDM symbol, master sync signal is included in last OFDM symbol of first time slot of 0 work song frame and 5 work song frames Interior, in same subframe, the OFDM symbol where master sync signal and auxiliary synchronous signals is adjacent.UE can only connect in 5Mms Receive most latter two OFDM symbol of any one 0 work song frame or first time slot of any one 5 work song frame, correspondingly, UE's Radio frequency operation unit only needs most being opened in latter two OFDM symbol in first time slot of 0 work song frame and 5 work song frames, at it He closes at the moment, so as to shorten the power consumption of radio frequency operation unit.
Step 203, UE receive the signal in all subframes within the search cycle.
When same each cell corresponding to point again and again is that UE receives the letter in all subframes in the search cycle for asynchronous cell Number, and the master sync signal and auxiliary synchronous signals of each cell are extracted from the signal of reception, complete homogeneous-frequency adjacent-domain search.
The present embodiment, when UE is FDD terminals, UE only receives any one 0 work song of serving cell within the search cycle Signal in frame or any one 5 work song frame, or, UE only receives any one 0 work song of serving cell within the search cycle Signal in the specific OFDM symbol of frame or any one 5 work song frame, is not received, UE is not for other signals in the search cycle Radio frequency operation unit is closed during reception signal.Because UE just opens radio frequency operation unit in reception signal, closed at other moment Radio frequency operation unit is closed, therefore, the method for the present embodiment can shorten the opening time of UE radio frequency operation units, so as to reduce UE power consumption.
On the basis of embodiment one and embodiment two, before UE obtains timing offset sign corresponding to same frequent point, also Including：UE itself configuration timing offset signs.If UE is FDD terminals, UE configuration timing offset signs are specially：UE is to fixed When deviation sign carry out initial configuration when, configuration timing offset be denoted as indicating that each cell is asynchronous cell.UE is inclined to timing After difference sign carries out initial configuration, timing offset sign can be updated in a case where：(1) when the high level of network side equipment When configuring UE and only carry out the measurement of serving cell, and being searched for without homogeneous-frequency adjacent-domain, it is each that UE configuration timing offset is denoted as instruction Cell is synchronized cells.(2) when UE carries out homogeneous-frequency adjacent-domain search, if timing offset sign indicates that each cell is asynchronous small Whether area, the timing offset for each cell that UE homogeneous-frequency adjacent-domain search results according to corresponding to asynchronous cell judge to search are less than UE The timing offset threshold value pre-set, if the timing offset for each cell that UE is searched is less than timing offset threshold value, UE configurations are fixed When deviation be denoted as indicating that each cell is synchronized cells.
Optionally, UE configures timing offset sign and also included：After UE searches in every j homogeneous-frequency adjacent-domain, configuration timing Deviation is denoted as indicating that each cell is asynchronous cell, and j is the positive integer more than or equal to 1.Why will be regularly inclined after search per j times Difference sign is configured to indicate that each cell is asynchronous cell, is to ensure that UE can be quick once there is new asynchronous cell Searched.Specifically, in the event of new asynchronous cell, but timing offset sign is configured as indicating each cell For synchronized cells, then UE only receives the signal in the preset time of serving cell within the search cycle, when being preset without receiving Between outer signal, therefore, UE can not timely have found iso-frequency adjacent community.The scheme of the present embodiment, it is searched for j homogeneous-frequency adjacent-domain Afterwards, by the way that timing offset sign to be configured to indicate that each cell is asynchronous cell, UE is enable to be received within the search cycle all The data that cell is sent, so as to find newly-increased iso-frequency adjacent community in time.
On the basis of above-described embodiment one, the embodiment of the present invention three carries out detailed to the technical scheme described in embodiment one Explanation, the present embodiment using UE as time division duplex (Time Division Duplexing, abbreviation TDD) terminal exemplified by said Bright, when UE is TDD terminal, master sync signal is included in 1 work song frame and 6 work song frames, and auxiliary synchronous signals include In 0 work song frame and 5 work song frames.Fig. 4 reduces the flow chart of the embodiment of the method three of user equipment power consumption, such as Fig. 4 for the present invention Shown, the method that the present embodiment provides may comprise steps of：
Step 301, when UE carry out homogeneous-frequency adjacent-domain search when, UE obtain with again and again point corresponding to timing offset sign, according to Timing offset sign determines whether with each cell in multiple cells corresponding to point again and again be synchronized cells.
Whether each cell is synchronized cells in UE multiple cells according to corresponding to timing offset sign judges same point again and again, if Each cell is synchronized cells, performs step 302, if each cell is asynchronous cell, performs step 303.
The signal of step 302, UE in the search cycle inscribed any one group of 0 work song frame and 1 work song frame for receiving serving cell (namely any one combination formed by 0 work song frame and 1 work song frame), or UE is in the search cycle inscribed receipts serving cell Any one group of 5 work song frames and 6 work song frames in signal (namely any one combination formed by 5 work song frames and 6 work song frames)； Or letters of the UE in the specific OFDM symbol of search cycle inscribed any one group of 0 work song frame for receiving serving cell and 1 work song frame Number, or, UE is in the specific OFDM symbol of search cycle inscribed any one group of 5 work song frames for receiving serving cell and 6 work song frames Signal, wherein, the specific OFDM symbol is master sync signal and the OFDM symbol where auxiliary synchronous signals, 0 work song frame and No. 1 Subframe is continuous, and 5 work song frames and 6 work song frames are continuous.
Under a kind of situation, if serving cell only have sent one group of 0 work song frame and 1 work song frame, and No. 0 within the search cycle Subframe and 1 work song frame are continuous, then UE only receives continuous 0 work song frame and 1 work song frame of serving cell within the search cycle Interior signal；If serving cell only have sent 5 work song frames and 6 work song frames, and 5 work song frames and 6 work song frames within the search cycle Continuously, then UE only receives the signal in the continuous 5 work song frame and 6 work song frames of serving cell within the search cycle；If clothes Business cell have sent at least one set of 0 work song frame and 1 work song frame, and at least one set of 5 work song frames and 6 work songs within the search cycle Frame, and 0 work song frame and 1 work song frame are continuous, and 5 work song frames and 6 work song frames are continuous, it is preferable that UE can be inscribed in the search cycle The signal in any one group of 0 work song frame and 1 work song frame of serving cell is received, or, UE is in search cycle inscribed receipts serving cell Any one group of 5 work song frames and 6 work song frames in signal.Certainly, UE can also be in the search cycle inscribed institute for receiving serving cell There is the signal in continuous 0 work song frame and 1 work song frame, and/or, the signal in all continuous 5 work song frame and 6 work song frames； Or signals of the UE in the search cycle inscribed continuous 0 work song frame in part and 1 work song frame for receiving serving cell, and/or, portion The signal divided in continuous 5 work song frame and 6 work song frames, various embodiments of the present invention are limited not to this, still, single 0 Signal UE in work song frame, 1 work song frame, 5 work song frames and 6 work song frames is not received.
Under said circumstances, UE is only received within the search cycle where the master sync signal and auxiliary synchronous signals of serving cell Signal in subframe, and under another situation, UE can only receive master sync signal and auxiliary synchronous signals institute within the search cycle Specific OFDM symbol in signal.Fig. 5 is refer to, Fig. 5 is the schematic diagram of tdd frame structure, the auxiliary synchronous signals in tdd frame In last OFDM symbol of 0 work song frame and 5 work song frames, master sync signal is included in 1 work song frame and 6 work song frames In 3rd OFDM symbol, so that the search cycle remains as 5Mms as an example, UE can only receive 0 work song of serving cell in 5Mms Signal in last OFDM symbol of frame and the 3rd OFDM symbol of 1 work song frame, or, UE can only connect in 5Mms Receive the signal in last OFDM symbol of the work song frame of serving cell 5 and the 3rd OFDM symbol of 6 work song frames.Correspondingly, UE radio frequency operation unit is only needed in last OFDM symbol of 0 work song frame of serving cell and the 3rd of 1 work song frame Opened in OFDM symbol, or, opened in last OFDM symbol of 5 work song frames and the 3rd OFDM symbol of 6 work song frames Open, other moment within the search cycle close radio frequency operation unit, so as to shorten the power consumption of radio frequency operation unit.In addition, It should be noted that although the transmitting timing of synchronized cells is almost identical, by UE receives the transmission signal institute of each cell The path of process may be different, therefore UE may need the extra signal for receiving certain sampled point more, to guarantee to receive To complete master sync signal and auxiliary synchronous signals, for example, UE needs the 3rd OFDM symbols for receiving 1 work song frame and 6 work song frames more The signal of L sampled point after number, L value is relevant with minizone propagation delay, and L can be preset by UE.
Step 303, UE receive the signal in all subframes within the search cycle.
When same each cell corresponding to point again and again is that UE receives the letter in all subframes in the search cycle for asynchronous cell Number, and the master sync signal and auxiliary synchronous signals of each cell are extracted from the signal of reception, complete homogeneous-frequency adjacent-domain search.
The present embodiment, when UE is TDD terminals, UE is received in any one group of 0 work song frame and 1 work song frame of serving cell Signal, or signals of the UE in the search cycle inscribed any one group of 5 work song frames and 6 work song frames for receiving serving cell；Or Person, letters of the UE in the specific OFDM symbol of search cycle inscribed any one group of 0 work song frame for receiving serving cell and 1 work song frame Number, or, UE is in the specific OFDM symbol of search cycle inscribed any one group of 5 work song frames for receiving serving cell and 6 work song frames Signal.Because UE just opens radio frequency operation unit in reception signal, radio frequency operation unit is closed at other moment, therefore, The method of the present embodiment can shorten the opening time of UE radio frequency operation units, so as to reduce UE power consumption.
On the basis of embodiment one and embodiment three, before UE obtains timing offset sign corresponding to same frequent point, also Including：UE itself configuration timing offset signs.If UE is TDD terminals, UE configuration timing offset is denoted as indicating that each cell is Synchronized cells.
Optionally, UE configures timing offset sign and also included：After UE searches in every j homogeneous-frequency adjacent-domain, configuration timing Deviation is denoted as indicating that each cell is asynchronous cell, and j is the positive integer more than or equal to 1.
Fig. 6 is the flow chart for the embodiment of the method four that the present invention reduces user equipment power consumption, the present embodiment and embodiment one Difference to embodiment three is how the main explanation of the present embodiment reduces UE power consumption, such as Fig. 6 when alien frequencies adjacent area is searched for Shown, the method that the present embodiment provides may comprise steps of：
Step 401, when UE carries out the search of alien frequencies adjacent area, the result that UE searches for according to alien frequencies adjacent area determines that alien frequencies frequency is It is no benchmark cell to be present.
Alien frequencies has the concept of serving cell unlike with frequency, therefore, during various embodiments of the present invention are searched in alien frequencies adjacent area Introduce " benchmark cell " concept come replace homogeneous-frequency adjacent-domain search when serving cell.When there is multiple alien frequencies frequencies, Mei Geyi Again and again the corresponding benchmark cell of point, UE need to judge that each alien frequencies frequency whether there is benchmark cell, the present embodiment pin successively The technical scheme of the embodiment of the present invention is illustrated to an alien frequencies frequency.One alien frequencies frequency there may be multiple cells, UE from A cell is selected to select base according to default rule as benchmark cell, UE in multiple cells corresponding to the alien frequencies frequency Quasi- cell.
The result that UE searches for according to alien frequencies adjacent area determines that alien frequencies frequency is specially with the presence or absence of benchmark cell：
First, UE needs to obtain the master sync signal and auxiliary synchronous signals of each cell corresponding to the alien frequencies frequency, according to this The master sync signal of each cell corresponding to alien frequencies frequency calculates master sync signal normalized crosscorrelation value corresponding to each cell respectively, And the auxiliary synchronous signals of each cell according to corresponding to alien frequencies frequency calculate auxiliary synchronous signals corresponding to each cell and normalized respectively Cross correlation value.Need to illustrate when, when UE is carrying out the search of alien frequencies adjacent area for the first time, UE needs to receive within the search cycle all Signal in subframe, then, the master sync signal and auxiliary synchronous signals of each cell are obtained from the signal received, only works as UE Determine that the alien frequencies frequency has benchmark cell according to the search result of first alien frequencies adjacent area, and it is each small corresponding to the alien frequencies frequency Area be synchronized cells after, UE could use the present embodiment scheme, i.e., only within the search cycle reception benchmark cell it is default when Interior signal.
After master sync signal normalized crosscorrelation value corresponding to each cell and auxiliary synchronous signals normalized value is calculated, UE judges to whether there is cell to be selected in each cell corresponding to the alien frequencies frequency, and the master sync signal normalization of the cell to be selected is mutual Correlation is more than default master sync signal normalized crosscorrelation threshold value, and the auxiliary synchronous signals normalization of cell to be selected is mutual Correlation is more than default auxiliary synchronous signals normalized crosscorrelation threshold value.Certain alien frequencies adjacent area is searched for for some alien frequencies frequency Multiple cells may be searched, but UE can only therefrom select 1 cell as benchmark cell.
If cell to be selected is not present in each cell corresponding to alien frequencies frequency, UE determines that benchmark cell is not present in alien frequencies frequency. If cell to be selected in each cell corresponding to alien frequencies frequency be present, UE determines that alien frequencies frequency has a benchmark cell, and UE is from cell to be selected It is middle selection one cell be used as benchmark cell, alternatively, UE chosen from cell to be selected master sync signal normalized value and it is auxiliary together The maximum cell of signal normalization value is walked as benchmark cell, or, UE chooses master sync signal normalization from cell to be selected The cell of value and auxiliary synchronous signals normalized value sum maximum is as benchmark cell.
The master sync signal of UE each cells according to corresponding to alien frequencies frequency calculates master sync signal corresponding to each cell respectively Normalized crosscorrelation value, and the auxiliary synchronous signals of each cell according to corresponding to alien frequencies frequency calculate respectively it is auxiliary corresponding to each cell Synchronizing signal normalized crosscorrelation value, it is specially：
UE master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
Wherein, NRFor the number of UE reception antenna, i represents the index of UE reception antenna, i=0,1 ..., NR- 1,For time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is the master sync signal pair of cell to be calculated Answer time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be time domain sequences length, N=128, pss*(n) it is Pss (n) conjugation, L=64, M=2.
UE auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
Wherein, NRFor the number of UE reception antenna, i represents the index of UE reception antenna, i=0,1 ..., NR-1,For time-domain signal corresponding to the auxiliary synchronous signals of cell to be calculated, sss (n) is the auxiliary synchronous signals pair of cell to be calculated Answer time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be time domain sequences length, N=128, sss*(n) it is Sss (n) conjugation, L=64, M=2.
The search of certain alien frequencies adjacent area may search out multiple cells for some alien frequencies frequency, therefrom select 1 cell conduct Benchmark cell.This just needs the priority for confirming each cell, and each cell is ranked up in other words, highest priority (or Sequence it is most forward) cell elect benchmark cell as.First, Step1Ratio is chosen>Step1Ratio_basecell, and Step2Ratio>Then Step2Ratio_basecell cell, priority is selected from cell to be selected as cell to be selected Highest cell as benchmark cell, wherein, Step1Ratio_basecell is default master sync signal normalized crosscorrelation Threshold value, Step2Ratio_basecell are default auxiliary synchronous signals normalized crosscorrelation threshold value.One kind of this implementation is real In existing mode, preferably Step2Ratio is bigger, it is secondary select Step1Ratio bigger native region priority it is higher, when two cells A, B Compare priority, if A Step2Ratio is more than B Step2Ratio, A priority is higher than B；If A's Step2Ratio is equal to B Step2Ratio, then compares Step1Ratio, if A Step1Ratio is more than B's Step1Ratio, then A priority be higher than B, if A Step1Ratio equal to B Step1Ratio, A and B have it is identical Priority.In another implementation of the present embodiment, the more big then cell of Step2Ratio and Step1Ratio sums it is excellent First level is higher, merely just lists two ways, and other modes can also be used to determine the priority of each cell certainly.When excellent When first level highest cell has multiple, can an optional cell as benchmark cell.
In the present embodiment, after benchmark cell is chosen to some alien frequencies frequency, benchmark cell needs more in a case where Newly：(1) if continuous N1 times of certain cell has higher priority than current benchmark cell, and the cell Step1Ratio is more than Step1Ratio_basecell, and Step2Ratio is more than Step2Ratio_basecell, then by benchmark Cell update is the cell.
If step 402, alien frequencies frequency have benchmark cell, UE obtains timing offset sign corresponding to alien frequencies frequency, according to Timing offset sign determines whether each cell is synchronized cells in multiple cells corresponding to alien frequencies frequency.
Timing offset is indicated for indicating that each cell is synchronized cells or asynchronous in multiple cells corresponding to the alien frequencies frequency Cell.
If step 403, each cell are synchronized cells, UE receives the default of benchmark cell in multiple cells within the search cycle Signal in time, times of the UE within the search cycle in addition to preset time close radio frequency operation unit, and the preset time is Subframe or OFDM symbol where master sync signal and auxiliary synchronous signals.
The specific implementation of the present embodiment can refer to the description in step 102 in embodiment one, repeat no more here, this The difference of step and step 102 is that what UE was received within the search cycle in this step is in the preset time of benchmark cell Signal, and in step 102, what UE was received within the search cycle is the signal in the preset time of serving cell.It is the plurality of small Signal in area in the preset time of benchmark cell includes：The master sync signal and auxiliary synchronous signals of benchmark cell, and it is multiple The master sync signal and auxiliary synchronous signals of other cells in cell.
The present embodiment, when being searched in alien frequencies adjacent area, UE is that each alien frequencies frequency selects a benchmark cell, and then judging should Whether each cell corresponding to alien frequencies frequency is synchronized cells, if each cell corresponding to the alien frequencies frequency is synchronized cells, then UE only receives the signal in the preset time of benchmark cell, the time outside preset time within the search cycle within the search cycle Close radio frequency operation unit, that is, UE is only when receiving master sync signal and subframe or OFDM symbol where auxiliary synchronous signals Radio frequency operation unit is just opened, and the other times within the search cycle close radio frequency operation unit.And UE is needed in the prior art All subframes in the search cycle are received, so UE will open radio frequency operation unit within the whole search cycle.Therefore, and Prior art is compared, and the method for the present embodiment can shorten the opening time of radio frequency operation unit, and UE power consumptions are reduced so as to reach Purpose.
Fig. 7 is the flow chart for the embodiment of the method five that the present invention reduces user equipment power consumption, and the present embodiment is to embodiment Four further describe, is illustrated in the present embodiment so that UE is FDD terminals as an example, when UE is FDD terminals, as shown in fig. 7, The method of the offer of the present embodiment comprises the following steps：
Step 501, when UE carries out the search of alien frequencies adjacent area, the result that UE searches for according to alien frequencies adjacent area judges that alien frequencies frequency is It is no benchmark cell to be present.
The specific implementation of this step can refer to the description of step 401 in example IV, repeat no more here, if alien frequencies There is benchmark cell in frequency, then perform step 502, if alien frequencies frequency is not present benchmark cell and performs step 503.
Step 502, UE obtain timing offset sign corresponding to alien frequencies frequency, judge alien frequencies frequency according to timing offset sign Whether each cell is synchronized cells in corresponding multiple cells.
If the judged result of this step is yes, step 504 is performed, if the judged result of this step is no, performs step 503。
503rd, UE receives the signal in all subframes within the search cycle.
If benchmark cell is not present in alien frequencies frequency, or when each cell corresponding to alien frequencies frequency is asynchronous cell, performs this step Suddenly, UE receives the signal in all subframes within the search cycle, and the master sync signal of each cell is extracted from the signal of reception And auxiliary synchronous signals, complete the search of alien frequencies adjacent area.
504th, UE is received within the search cycle in any one 0 work song frame or any one 5 work song frame of benchmark cell Signal；Or UE received within the search cycle benchmark cell any one 0 work song frame or any one 5 work song frame it is specific Signal in OFDM symbol, the specific OFDM symbol are the OFDM symbol where master sync signal and auxiliary synchronous signals.
The specific implementation of this step can refer to the description of step 202 in embodiment two, repeat no more here, this step Difference with step 202 is：This step reception signal on the basis of the time of benchmark cell, and it is small to service in step 202 Reception signal on the basis of the time in area.
The present embodiment, when UE is FDD terminals, if UE has benchmark cell, and each cell is same corresponding to alien frequencies frequency Cell is walked, then UE only receives the letter in any one 0 work song frame or any one 5 work song frame of benchmark cell within the search cycle Number, or, UE within the search cycle only receive benchmark cell any one 0 work song frame or any one 5 work song frame it is specific Signal in OFDM symbol, do not received for other signals in the search cycle, UE not reception signal when close radio frequency operation list Member.Because UE just opens radio frequency operation unit in reception signal, radio frequency operation unit, therefore, this reality are closed at other moment The opening time of UE radio frequency operation units can be shortened by applying the method for example, so as to reduce UE power consumption.
On the basis of example IV and embodiment five, before UE obtains timing offset sign corresponding to alien frequencies frequency, also Including：UE itself configuration timing offset signs.If UE is FDD terminals, UE configuration timing offset signs, it is specially：UE configurations are fixed When deviation be denoted as indicating that each cell is synchronized cells.UE to timing offset after progress initial configuration is indicated, in following feelings Timing offset sign is updated under condition：When UE carries out the search of alien frequencies adjacent area, if timing offset sign indicates each cell For asynchronous cell, the timing offset for each cell that UE alien frequencies adjacent area search results according to corresponding to asynchronous cell judge to search is The no timing offset threshold value pre-set less than UE, if the timing offset for each cell that UE is searched is less than timing offset threshold value, UE configuration timing offset is denoted as indicating that each cell is synchronized cells.
During in order to ensure to occur new asynchronous cell, UE can be searched quickly, and in the present embodiment, UE is in every j After secondary alien frequencies adjacent area search, configuration timing offset is denoted as indicating that each cell is asynchronous cell, and j is just whole more than or equal to 1 Number.
Fig. 8 is the flow chart for the embodiment of the method six that the present invention reduces user equipment power consumption, and the present embodiment is to embodiment Four further describe, is illustrated in the present embodiment so that UE is TDD terminals as an example, when UE is TDD terminals, as shown in figure 8, The method of the offer of the present embodiment comprises the following steps：
Step 601, when UE carries out the search of alien frequencies adjacent area, the result that UE searches for according to alien frequencies adjacent area judges that alien frequencies frequency is It is no benchmark cell to be present.
The specific implementation of this step can refer to the description of step 401 in example IV, repeat no more here, if alien frequencies There is benchmark cell in frequency, then perform step 602, if alien frequencies frequency is not present benchmark cell and performs step 603.
Step 602, UE obtain timing offset sign corresponding to alien frequencies frequency, judge alien frequencies frequency according to timing offset sign Whether each cell is synchronized cells in corresponding multiple cells.
If the judged result of this step is yes, step 604 is performed, if the judged result of this step is no, performs step 603。
603rd, UE receives the signal in all subframes within the search cycle.
If benchmark cell is not present in alien frequencies frequency, or when each cell corresponding to alien frequencies frequency is asynchronous cell, performs this step Suddenly, UE receives the signal in all subframes within the search cycle, and the master sync signal of each cell is extracted from the signal of reception And auxiliary synchronous signals, complete the search of alien frequencies adjacent area.
604th, UE receives the signal in any one group of 0 work song frame and 1 work song frame of benchmark cell within the search cycle, or Person, UE receive the signal in any one group of 5 work song frames and 6 work song frames of benchmark cell within the search cycle；Or UE exists The signal in any one group of 0 work song frame of benchmark cell and the specific OFDM symbol of 1 work song frame is received in search cycle, or, UE receives the signal in any one group of 5 work song frames of benchmark cell and the specific OFDM symbol of 6 work song frames within the search cycle, its In, the specific OFDM symbol is the OFDM symbol where master sync signal and auxiliary synchronous signals, and 0 work song frame and 1 work song frame are continuous, 5 work song frames and 6 work song frames are continuous.
The specific implementation of this step can refer to implement three in step 302 description, repeat no more here, this step with The difference of step 302 is：This step reception signal on the basis of the time of benchmark cell, and with serving cell in step 302 Time on the basis of reception signal.
The present embodiment, when UE is TDD terminals, UE receives any one group of 0 work song frame of benchmark cell within the search cycle With the signal in the signal in 1 work song frame, or any one group of 5 work song frames and 6 work song frames of reception benchmark cell；Or UE The signal in any one group of 0 work song frame of benchmark cell and the specific OFDM symbol of 1 work song frame is received within the search cycle, or Person, receive the signal in any one group of 5 work song frames of benchmark cell and the specific OFDM symbol of 6 work song frames.Because UE is being received Radio frequency operation unit is just opened during signal, closes radio frequency operation unit at other moment, therefore, the method for the present embodiment can contract The opening time of short UE radio frequency operations unit, so as to reduce UE power consumption.
On the basis of example IV and embodiment six, before UE obtains timing offset sign corresponding to same frequent point, also Including：UE configuration timing offset signs.If UE is TDD terminals, UE configuration timing offset is denoted as indicating each cell for synchronously Cell.Optionally, after UE searches in every j homogeneous-frequency adjacent-domain, configuration timing offset is denoted as indicating that each cell is asynchronous cell, J is the positive integer more than or equal to 1.
Fig. 9 is the structural representation for the UE that the embodiment of the present invention seven provides, as shown in figure 9, the UE of the present embodiment can be wrapped Include：Acquisition module 11, determining module 12 and receiving module 13.
Wherein, acquisition module 11, for when the UE carries out homogeneous-frequency adjacent-domain search, obtaining corresponding to the same point again and again Timing offset is indicated, and the timing offset is indicated for indicating that each cell is synchronized cells or asynchronous cell；
Determining module 12, the timing offset sign for being obtained according to acquisition module 11 determine described with point pair again and again Whether each cell is synchronized cells in the multiple cells answered；
Receiving module 13, for if it is determined that module 12 determines that each cell is synchronized cells, being then inscribed in the search cycle The signal in the preset time of serving cell in the multiple cell is received, within the search cycle in addition to the preset time Time closes radio frequency operation unit, the preset time be the master sync signal and subframe where the auxiliary synchronous signals or Orthogonal frequency division multiplex OFDM symbol.
Wherein, the signal in the multiple cell in the preset time of serving cell includes：The main synchronous letter of serving cell Number and auxiliary synchronous signals, and the multiple cell in other cells master sync signal and auxiliary synchronous signals.
When the UE is FDD terminal, the master sync signal and the auxiliary synchronous signals are all contained in No. 0 In subframe and 5 work song frames, the receiving module 13 is specifically used for：Any of the serving cell is received within the search cycle Signal in one 0 work song frame or any one 5 work song frame；Or the serving cell is received within the search cycle Signal in the specific OFDM symbol of any one 0 work song frame or any one 5 work song frame, the specific OFDM symbol is described OFDM symbol where master sync signal and the auxiliary synchronous signals.
When the UE is TDD terminal, the master sync signal is included in 1 work song frame and 6 work song frames, institute Auxiliary synchronous signals are stated in 0 work song frame and 5 work song frames, the receiving module 13 is specifically used for：Within the search cycle The signal in any one group of 0 work song frame and 1 work song frame of the serving cell is received, or institute is received within the search cycle The signal in any one group of 5 work song frames and 6 work song frames of serving cell is stated, wherein, the 0 work song frame and the 1 work song frame connect Continuous, the 5 work song frame and the 6 work song frame are continuous；Or any one of the serving cell is received within the search cycle Signal in the specific OFDM symbol of 0 work song frame of group and 1 work song frame, or, it is small that the service is received within the search cycle Signal in any one group of 5 work song frames in area and the specific OFDM symbol of 6 work song frames, wherein, the specific OFDM symbol is institute The OFDM symbol where master sync signal and the auxiliary synchronous signals is stated, the 0 work song frame and the 1 work song frame are continuous, and described 5 Work song frame and the 6 work song frame are continuous.
The device of the present embodiment, can be used for perform embodiment one to embodiment three technical scheme, its realization principle and Technique effect is similar, and here is omitted.
Figure 10 is the structural representation for the UE that the embodiment of the present invention eight provides, and as shown in Figure 10, the device of the present embodiment exists On the basis of Fig. 9 shown device structures, further, it can also include：Configuration module 14, it is described fixed for being configured for the UE When deviation indicate.
The configuration module 14 is specifically used for：If the UE is TDD terminal, the timing offset mark is configured It is shown as indicating that each cell is synchronized cells.If the UE is FDD terminal, indicated to the timing offset When carrying out initial configuration, configure the timing offset and be denoted as indicating that each cell is asynchronous cell.
If the UE is FDD terminals, the configuration module 14 is after progress initial configuration is indicated to the timing offset It is additionally operable to：When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without described with frequency When adjacent area is searched for, configure the timing offset and be denoted as indicating that each cell is synchronized cells；Or carry out institute in the UE When stating homogeneous-frequency adjacent-domain search, if timing offset sign indicates that each cell is asynchronous cell, and the UE is according to institute The timing offset for stating each cell that homogeneous-frequency adjacent-domain search result corresponding to asynchronous cell judges to search is less than timing offset threshold value When, configure the timing offset and be denoted as indicating that each cell is synchronized cells.
Further, the configuration module 14 is additionally operable to：After being searched in every j homogeneous-frequency adjacent-domain, it is inclined to configure the timing Difference is denoted as indicating that each cell is asynchronous cell, to guarantee to find newly-increased iso-frequency adjacent community in time, j be more than etc. In 1 positive integer.
The device of the present embodiment, can be used for perform embodiment one to embodiment three technical scheme, its realization principle and Technique effect is similar, and here is omitted.
Figure 11 is the structural representation for the UE that the embodiment of the present invention nine provides, as shown in figure 11, the UE that the present embodiment provides Including：First determining module 21, acquisition module 22, the second determining module 23 and receiving module 24.
Wherein, the first determining module 21, for when the UE carries out the search of alien frequencies adjacent area, being searched according to the alien frequencies adjacent area The result of rope determines that alien frequencies frequency whether there is benchmark cell；
Acquisition module 22, for when the first determining module 21 determines that the alien frequencies frequency has benchmark cell, obtaining institute State timing offset corresponding to alien frequencies frequency to indicate, the timing offset is indicated for indicating that each cell is synchronized cells or different Walk cell；
Second determining module 23, the timing offset sign for being obtained according to acquisition module 22 determine the alien frequencies frequency Whether each cell is synchronized cells in multiple cells corresponding to point；
Receiving module 24, for when it is synchronized cells that the second determining module 23, which determines each cell, in the search cycle The interior signal received in the multiple cell in the preset time of benchmark cell, removes the preset time within the search cycle The outer time closes radio frequency operation unit, and the preset time is the son where the master sync signal and the auxiliary synchronous signals Frame or orthogonal frequency division multiplex OFDM symbol.
Wherein, the signal in the multiple cell in the preset time of benchmark cell includes：The main synchronous letter of benchmark cell Number and auxiliary synchronous signals, and the multiple cell in other cells master sync signal and auxiliary synchronous signals.
Under a kind of situation, when the UE is FDD terminal, the master sync signal and the auxiliary synchronous signals It is all contained in 0 work song frame and 5 work song frames, the receiving module 24 is specifically used for：It is small that the benchmark is received within the search cycle Signal in any one 0 work song frame or any one 5 work song frame in area；Or that the benchmark is received within the search cycle is small Signal in any one 0 work song frame in area or the specific OFDM symbol of any one 5 work song frame, the specific OFDM symbol are OFDM symbol where the master sync signal and the auxiliary synchronous signals.
Under another situation, when the UE is TDD terminal, the master sync signal is included in 1 work song frame In 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, and the receiving module 24 is specifically used for： The signal in any one group of 0 work song frame and 1 work song frame of the benchmark cell is received in the search cycle, or, described The signal in any one group of 5 work song frames and 6 work song frames of the benchmark cell is received in search cycle, wherein, the 0 work song frame Continuous with the 1 work song frame, the 5 work song frame and the 6 work song frame are continuous；Or described in being received within the search cycle Signal in any one group of 0 work song frame of benchmark cell and the specific OFDM symbol of 1 work song frame, or, in the search cycle Signal in the specific OFDM symbol of interior any one group of 5 work song frames for receiving the benchmark cell and 6 work song frames, it is described specific OFDM symbol is the OFDM symbol where the master sync signal and the auxiliary synchronous signals, the 0 work song frame and 1 work song Frame is continuous, and the 5 work song frame and the 6 work song frame are continuous.
The UE of the present embodiment, it can be used for performing example IV to the technical scheme of embodiment six, its realization principle and skill Art effect is similar, and here is omitted.
Figure 12 is the structural representation for the UE that the embodiment of the present invention ten provides, and as shown in figure 12, the device of the present embodiment exists On the basis of Figure 11 shown device structures, further, it can also include：Configuration module 25, for for described in UE configurations Timing offset indicates.
The configuration module 25 is specifically used for：If the UE is TDD terminal, the timing offset mark is configured It is shown as indicating that each cell is synchronized cells.If the UE is FDD terminal, configuration module 25 is to described fixed When deviation sign carry out initial configuration when, configure the timing offset and be denoted as indicating that each cell is asynchronous cell.
When the UE is FDD terminals, the configuration module 25 is additionally operable to：The alien frequencies adjacent area search is carried out in the UE When, if timing offset sign indicates that each cell is asynchronous cell, and the UE is corresponding according to the asynchronous cell The search result timing offset of each cell that judges to search in alien frequencies adjacent area when being less than timing offset threshold value, configure the timing Deviation is denoted as indicating that each cell is synchronized cells.
Further, configuration module 25 is additionally operable to：After being searched in every j alien frequencies adjacent area, the timing offset mark is configured It is shown as indicating that each cell is asynchronous cell, j is the positive integer more than or equal to 1.
In the present embodiment, first determining module 21 specifically includes：Computing unit 211, judging unit 212 and benchmark are small Area's determining unit 213.
Computing unit 211, described in the master sync signal for each cell according to corresponding to the alien frequencies frequency calculates respectively Master sync signal normalized crosscorrelation value corresponding to each cell, and according to corresponding to the alien frequencies frequency each cell auxiliary synchronization Signal calculates auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell respectively；
Judging unit 212, for judging in each cell corresponding to the alien frequencies frequency with the presence or absence of at least one to be selected small Area, the master sync signal normalized crosscorrelation value of each cell to be selected are more than default master sync signal normalized crosscorrelation thresholding Value, and the auxiliary synchronous signals normalized crosscorrelation value of each cell to be selected is more than the normalization of default auxiliary synchronous signals mutually Correlation threshold；
Benchmark cell determining unit 213, if at least one treat to be not present in each cell corresponding to the alien frequencies frequency Select cell, it is determined that benchmark cell is not present in the alien frequencies frequency, if existing at least in each cell corresponding to the alien frequencies frequency One cell to be selected, it is determined that the alien frequencies frequency has benchmark cell, and chooses one from least one cell to be selected Individual cell is as the benchmark cell.
The computing unit 211 is specifically used for：
The master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0, 1 ..., NR- 1, ri pss(n) it is time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is the cell to be calculated Master sync signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length Degree, pss*(n) conjugation for being pss (n), L=64, M=2；
The auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
Wherein,For time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) waits to count to be described Calculate the time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
Benchmark cell determining unit 213 is specifically used for：Master sync signal is chosen from least one cell to be selected to return The cell of one change value or auxiliary synchronous signals normalized value maximum is as the benchmark cell；Or selected from the cell to be selected The cell of master sync signal normalized value and auxiliary synchronous signals normalized value sum maximum is taken as the benchmark cell.
The UE of the present embodiment, it can be used for performing example IV to the technical scheme of embodiment six, its realization principle and skill Art effect is similar, and here is omitted.
It should be noted that above-mentioned functional module division is only a kind of embodiment therein, in embodiment, Those skilled in the art can do different functional module divisions as the case may be under the description with reference to the various embodiments described above To perform the above method, the function of the present invention is completed, reaches the effect of the present invention.In embodiment, above-mentioned each module can To be software module, these software modules have the hard of runs software function by computer processor, CUP, logic circuit etc. Part equipment is run to perform method described above.Above-mentioned software module can also be hardware component, such as by SDN framework In interchanger in each corresponding hardware component perform.Those skilled in the art, can be with reference in the case of the various embodiments described above Description of each corresponding hardware component in each embodiment in the controller is carried out modification accordingly (this modification can be with Software, the form modification of firmware, either hardware) or new hardware component is added to complete the function and effect of the present invention.
Figure 13 is the structural representation for the UE that the embodiment of the present invention 11 provides, as shown in figure 13, the UE300 of the present embodiment Including：Processor 31, memory 32, receiver 33 and system bus 34, between processor 31, memory 32 and receiver 33 It can connect and communicate by bus 34.Wherein, processor 31 can be central processing unit (central processing unit, CPU), application specific integrated circuit (application-specific integrated circuit, ASIC) etc..Memory 32 can With including：Random access memory (random access memory, RAM), read-only storage (read-only memory, ROM), disk etc. has the entity of store function.The memory 32, for storing computer executed instructions 321；The processing Device 31, for running the computer executed instructions 321, to perform previous embodiment one to the method and its group of embodiment three Close.
Wherein, processor 31, it is described corresponding with point again and again for when user equipment (UE) carries out homogeneous-frequency adjacent-domain search, obtaining Timing offset sign, according to timing offset sign determine it is described with point again and again corresponding in multiple cells each cell whether For synchronized cells, the timing offset is indicated for indicating that each cell is synchronized cells or asynchronous cell；
If each cell is synchronized cells, receiver 33 receives serving cell in the multiple cell within the search cycle Preset time in signal, and within the search cycle time in addition to the preset time close radio frequency operation unit, The preset time is the subframe or orthogonal frequency division multiplex OFDM symbol where the master sync signal and the auxiliary synchronous signals.
Wherein, the signal in the multiple cell in the preset time of serving cell includes：The main synchronous letter of serving cell Number and auxiliary synchronous signals, and the multiple cell in other cells master sync signal and auxiliary synchronous signals.
Under a kind of situation, when the UE is FDD terminal, the master sync signal and the auxiliary synchronous signals It is all contained in 0 work song frame and 5 work song frames, receiver 33 is specifically used for：The serving cell is received within the search cycle Any one 0 work song frame or any one 5 work song frame in signal；Or the service is received within the search cycle Signal in any one 0 work song frame of cell or the specific OFDM symbol of any one 5 work song frame, the specific OFDM symbol For the OFDM symbol where the master sync signal and the auxiliary synchronous signals.
Under another situation, when the UE is TDD terminal, the master sync signal is included in 1 work song frame In 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, and receiver 33 is specifically used for：Searched described The signal in any one group of 0 work song frame and 1 work song frame of the serving cell is received in the rope cycle, or the UE searches described The signal in any one group of 5 work song frames and 6 work song frames of the serving cell is received in the rope cycle, wherein, the 0 work song frame and The 1 work song frame is continuous, and the 5 work song frame and the 6 work song frame are continuous；Or the clothes are received within the search cycle Signal in any one group of 0 work song frame of cell of being engaged in and the specific OFDM symbol of 1 work song frame, or, the UE is in the search The signal in any one group of 5 work song frames of the serving cell and the specific OFDM symbol of 6 work song frames is received in cycle, wherein, The specific OFDM symbol is the master sync signal and the OFDM symbol where the auxiliary synchronous signals, the 0 work song frame and The 1 work song frame is continuous, and the 5 work song frame and the 6 work song frame are continuous.
In the present embodiment, before processor 31 obtains timing offset sign corresponding to the same frequent point, it is additionally operable to：Configuration The timing offset sign.Processor 31 configures the timing offset sign, is specially：If the UE is that TDD is whole End, then configure the timing offset and be denoted as indicating that each cell is synchronized cells.If the UE is that FDD is whole End, processor 31 configure the timing offset and are denoted as described in instruction when indicating progress initial configuration to the timing offset Each cell is asynchronous cell.
When UE is FDD terminals, processor 31 to the timing offset after progress initial configuration is indicated, processor 31 It is additionally operable to：When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without described with frequency When adjacent area is searched for, configure the timing offset and be denoted as indicating that each cell is synchronized cells；Or carry out institute in the UE When stating homogeneous-frequency adjacent-domain search, if timing offset sign indicates that each cell is asynchronous cell, and according to described asynchronous small The timing offset for each cell that homogeneous-frequency adjacent-domain search result corresponding to area judges to search is less than timing offset threshold value, then configures institute Timing offset is stated to be denoted as indicating that each cell is synchronized cells.
Further, processor 31 is additionally operable to when configuring the timing offset sign：Searched in every n homogeneous-frequency adjacent-domain Afterwards, configure the timing offset to be denoted as indicating that each cell is asynchronous cell, n is the positive integer more than or equal to 1.
The UE of the present embodiment, it can be used for performing embodiment one to the technical scheme of embodiment three, its realization principle and skill Art effect is similar, and here is omitted.
Figure 14 is the structural representation for the UE that the embodiment of the present invention 12 provides, as shown in figure 14, the U400 of the present embodiment Including：Processor 41, memory 42, receiver 43 and system bus 44, between processor 41, memory 42 and receiver 43 It can connect and communicate by bus 44.Wherein, processor 41 can be central processing unit (central processing unit, CPU), application specific integrated circuit (application-specific integrated circuit, ASIC) etc..Memory 42 can With including：Random access memory (random access memory, RAM), read-only storage (read-only memory, ROM), disk etc. has the entity of store function.The memory 42, for storing computer executed instructions 421；The processing Device 41, for running the computer executed instructions 421, to perform previous embodiment four to the method and its group of embodiment six Close.
Wherein, processor 41, it is true according to the result that the alien frequencies adjacent area is searched for for when UE carries out the search of alien frequencies adjacent area Determine alien frequencies frequency and whether there is benchmark cell；
If there is benchmark cell, processor 41, for obtaining timing corresponding to the alien frequencies frequency partially in the alien frequencies frequency Difference sign, whether it is synchronous small according to each cell in multiple cells corresponding to the timing offset sign determination alien frequencies frequency Area, the timing offset are indicated for indicating that each cell is synchronized cells or asynchronous cell；
If each cell is synchronized cells, receiver 43, for receiving base in the multiple cell within the search cycle Signal in the preset time of quasi- cell, and the time closing radio frequency operation within the search cycle in addition to the preset time Unit, the preset time are the subframe or orthogonal frequency division multiplex OFDM where the master sync signal and the auxiliary synchronous signals Symbol.Wherein, the signal in the multiple cell in the preset time of benchmark cell includes：The master sync signal of benchmark cell and The master sync signal and auxiliary synchronous signals of other cells in auxiliary synchronous signals, and the multiple cell.
The result that processor 41 is searched for according to the alien frequencies adjacent area determines that alien frequencies frequency whether there is benchmark cell, specifically For：First, the master sync signal of each cell according to corresponding to the alien frequencies frequency calculates main same corresponding to each cell respectively Signal normalization cross correlation value is walked, and according to corresponding to the alien frequencies frequency described in the auxiliary synchronous signals of each cell calculate respectively Auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell；Then, judge in each cell corresponding to the alien frequencies frequency whether At least one cell to be selected be present, the master sync signal normalized crosscorrelation value of each cell to be selected is more than default main synchronous letter Number normalized crosscorrelation threshold value, and the auxiliary synchronous signals normalized crosscorrelation value of each cell to be selected be more than it is default Auxiliary synchronous signals normalized crosscorrelation threshold value；If it is not present in each cell corresponding to the alien frequencies frequency at least one to be selected Cell, it is determined that benchmark cell is not present in the alien frequencies frequency；If exist at least in each cell corresponding to the alien frequencies frequency One cell to be selected, it is determined that the alien frequencies frequency has benchmark cell, and chooses one from least one cell to be selected Individual cell is as the benchmark cell.
The processor 41 chooses a cell as the benchmark cell from least one cell to be selected, specifically For：Maximum small of master sync signal normalized value or auxiliary synchronous signals normalized value is chosen from least one cell to be selected Area is as the benchmark cell；Or selection master sync signal normalized value and auxiliary synchronous signals are returned from the cell to be selected The maximum cell of one change value sum is as the benchmark cell.
Processor 41 calculates each cell respectively in the master sync signal of each cell according to corresponding to the alien frequencies frequency Corresponding master sync signal normalized crosscorrelation value, and the auxiliary synchronous signals of each cell according to corresponding to the alien frequencies frequency divide When not calculating auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell, it is specifically used for：
The master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0, 1 ..., NR- 1, ri pss(n) it is time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is the cell to be calculated Master sync signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length Degree, pss*(n) conjugation for being pss (n), L=64, M=2.
The auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
Wherein, ri sss(n) it is time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) treats to be described Calculate the time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
Under a kind of situation of the present embodiment, when the UE is FDD terminal, the master sync signal and described Auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, and receiver 43 is specifically used for：The base is received within the search cycle Signal in any one 0 work song frame or any one 5 work song frame of quasi- cell；Or the base is received within the search cycle Signal in any one 0 work song frame of quasi- cell or the specific OFDM symbol of any one 5 work song frame, the specific OFDM symbols OFDM symbol number for the master sync signal and where the auxiliary synchronous signals.
Under another situation of the present embodiment, when the UE is TDD terminal, the master sync signal includes In 1 work song frame and 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, and receiver 43 is specifically used for： The signal in any one group of 0 work song frame and 1 work song frame of the benchmark cell is received within the search cycle, or, in institute The signal in any one group of 5 work song frames and 6 work song frames that the benchmark cell is received in the search cycle is stated, wherein, 0 work song Frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；Or institute is received within the search cycle The signal in any one group of 0 work song frame of benchmark cell and the specific OFDM symbol of 1 work song frame is stated, or, in the search week The signal in any one group of 5 work song frames of the benchmark cell and the specific OFDM symbol of 6 work song frames is received in phase, it is described specific OFDM symbol is the OFDM symbol where the master sync signal and the auxiliary synchronous signals, the 0 work song frame and 1 work song Frame is continuous, and the 5 work song frame and the 6 work song frame are continuous.
Further, processor 41 is additionally operable to before timing offset sign corresponding to the alien frequencies frequency is obtained：For institute State UE and configure the timing offset sign.Processor 41 is specifically used for when configuring the timing offset sign：If the UE is TDD terminal, then configure the timing offset and be denoted as indicating that each cell is synchronized cells.If the UE is frequency Divide duplexing FDD terminals, then when indicating progress initial configuration to the timing offset, configure the timing offset and be denoted as indicating Each cell is asynchronous cell.
When the UE is FDD terminals, processor 41 is also used after progress initial configuration is indicated to the timing offset In：When the UE carries out the alien frequencies adjacent area search, if timing offset sign indicates that each cell is asynchronous cell, And the timing offset of each cell that judges to search of the alien frequencies adjacent area search result according to corresponding to the asynchronous cell be less than it is described Timing offset threshold value, then configure the timing offset and be denoted as indicating that each cell is synchronized cells.
Processor 41 is additionally operable to：After being searched in every j alien frequencies adjacent area, configure the timing offset and be denoted as described in instruction Each cell is asynchronous cell, and j is the positive integer more than or equal to 1.
The UE of the present embodiment, it can be used for performing example IV to the technical scheme of embodiment six, its realization principle and skill Art effect is similar, and here is omitted.
Each module of above-mentioned UE embodiments or the specific implementation of unit can refer to before embodiment of the method.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (42)

  1. A kind of 1. method for reducing user equipment power consumption, it is characterised in that including
    When user equipment (UE) carries out homogeneous-frequency adjacent-domain search, the UE is obtained with timing offset sign again and again corresponding to point, according to The timing offset sign determines whether each cell is synchronized cells in same multiple cells corresponding to point again and again, the timing Deviation is indicated for indicating that each cell is synchronized cells or asynchronous cell；
    If each cell is synchronized cells, the UE receives the default of serving cell in the multiple cell within the search cycle Signal in time, times of the UE within the search cycle in addition to the preset time close radio frequency operation unit, institute Preset time is stated as the subframe or orthogonal frequency division multiplex OFDM symbol where master sync signal and auxiliary synchronous signals.
  2. 2. according to the method for claim 1, it is characterised in that when the UE is FDD terminal, the master is same Step signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, and the UE receives the clothes within the search cycle Signal in the preset time for cell of being engaged in, including：
    The UE receives any one 0 work song frame or any one 5 work song frame of the serving cell within the search cycle Interior signal；
    Or
    The UE receives any one 0 work song frame or any one 5 work song frame of the serving cell within the search cycle Specific OFDM symbol in signal, where the specific OFDM symbol is the master sync signal and the auxiliary synchronous signals OFDM symbol.
  3. 3. according to the method for claim 1, it is characterised in that when the UE is TDD terminal, the master is same Walk signal to be included in 1 work song frame and 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, the UE The signal in the preset time of the serving cell is received within the search cycle, including：
    The UE receives the signal in any one group of 0 work song frame and 1 work song frame of the serving cell within the search cycle, Or the UE receives the signal in any one group of 5 work song frames and 6 work song frames of the serving cell within the search cycle, Wherein, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
    Or
    The UE received within the search cycle serving cell any one group of 0 work song frame and 1 work song frame it is specific Signal in OFDM symbol, or, the UE receives any one group of 5 work song frames of the serving cell within the search cycle With the signal in the specific OFDM symbol of 6 work song frames, wherein, the specific OFDM symbol is the master sync signal and described auxiliary OFDM symbol where synchronizing signal, the 0 work song frame and the 1 work song frame are continuous, the 5 work song frame and the 6 work song frame Continuously.
  4. 4. according to the method any one of claim 1-3, it is characterised in that the UE obtains described corresponding with point again and again Timing offset sign before, in addition to：
    The UE configures the timing offset sign.
  5. 5. according to the method for claim 4, it is characterised in that the UE configures the timing offset sign, including：
    If the UE is TDD terminal, the UE configures the timing offset and is denoted as indicating that each cell is same Walk cell.
  6. 6. according to the method for claim 4, it is characterised in that the UE configures the timing offset sign, including：
    If the UE is FDD terminal, the UE configures institute when indicating progress initial configuration to the timing offset Timing offset is stated to be denoted as indicating that each cell is asynchronous cell.
  7. 7. according to the method for claim 6, it is characterised in that the UE is initially matched somebody with somebody to timing offset sign After putting, the UE, which configures the timing offset sign, also to be included：
    When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without the homogeneous-frequency adjacent-domain During search, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells；
    Or when the UE carries out the homogeneous-frequency adjacent-domain search, if timing offset sign indicates that each cell is different Walk cell, and the homogeneous-frequency adjacent-domain search result according to corresponding to the asynchronous cell judges that the timing offset of each cell that searches is small When timing offset threshold value, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells.
  8. 8. according to the method for claim 7, it is characterised in that the UE, which configures the timing offset sign, also to be included：
    After the UE searches in every j homogeneous-frequency adjacent-domain, configure the timing offset and be denoted as indicating that each cell is asynchronous Cell, j are the positive integer more than or equal to 1.
  9. 9. the method according to any one of claim 1-3,5-8, it is characterised in that serving cell in the multiple cell Preset time in signal include：The master sync signal and auxiliary synchronous signals of serving cell, and its in the multiple cell The master sync signal and auxiliary synchronous signals of his cell.
  10. A kind of 10. method for reducing user equipment power consumption, it is characterised in that including：
    When user equipment (UE) carries out the search of alien frequencies adjacent area, the result that the UE searches for according to the alien frequencies adjacent area determines alien frequencies frequency Point whether there is benchmark cell；
    If the alien frequencies frequency has benchmark cell, the UE obtains timing offset sign corresponding to the alien frequencies frequency, according to The timing offset sign determines whether each cell is synchronized cells in multiple cells corresponding to the alien frequencies frequency, the timing Deviation is indicated for indicating that each cell is synchronized cells or asynchronous cell；
    If each cell is synchronized cells, the UE receives the default of benchmark cell in the multiple cell within the search cycle Signal in time, times of the UE within the search cycle in addition to the preset time close radio frequency operation unit, institute Preset time is stated as the subframe or orthogonal frequency division multiplex OFDM symbol where master sync signal and auxiliary synchronous signals.
  11. 11. according to the method for claim 10, it is characterised in that when the UE is FDD terminal, the master Synchronizing signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, described in the UE is received within the search cycle Signal in the preset time of benchmark cell, including：
    The UE is received within the search cycle in any one 0 work song frame or any one 5 work song frame of the benchmark cell Signal；
    Or
    The UE receives any one 0 work song frame or the spy of any one 5 work song frame of the benchmark cell within the search cycle Determine the signal in OFDM symbol, the specific OFDM symbol is the OFDM where the master sync signal and the auxiliary synchronous signals Symbol.
  12. 12. according to the method for claim 10, it is characterised in that when the UE is TDD terminal, the master Synchronizing signal is included in 1 work song frame and 6 work song frames, and the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, described UE receives the signal in the preset time of the benchmark cell within the search cycle, including：
    The UE receives the signal in any one group of 0 work song frame and 1 work song frame of the benchmark cell within the search cycle, Or the UE receives the letter in any one group of 5 work song frames and 6 work song frames of the benchmark cell within the search cycle Number, wherein, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
    Or
    The UE received within the search cycle benchmark cell any one group of 0 work song frame and 1 work song frame it is specific Signal in OFDM symbol, or, the UE receives any one group of 5 work song frames of the benchmark cell within the search cycle With the signal in the specific OFDM symbol of 6 work song frames, the specific OFDM symbol is the master sync signal and the auxiliary synchronization OFDM symbol where signal, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous.
  13. 13. according to the method any one of claim 10-12, it is characterised in that the UE is according to the alien frequencies adjacent area The result of search determines that alien frequencies frequency whether there is benchmark cell, including：
    UE master sync signals of each cell according to corresponding to the alien frequencies frequency calculate main corresponding to each cell respectively Synchronizing signal normalized crosscorrelation value, and the auxiliary synchronous signals of each cell calculate institute respectively according to corresponding to the alien frequencies frequency State auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell；
    The UE judges to whether there is at least one cell to be selected in each cell corresponding to the alien frequencies frequency, each cell to be selected Master sync signal normalized crosscorrelation value be more than default master sync signal normalized crosscorrelation threshold value, it is and described each The auxiliary synchronous signals normalized crosscorrelation value of cell to be selected is more than default auxiliary synchronous signals normalized crosscorrelation threshold value；
    If at least one cell to be selected is not present in each cell corresponding to the alien frequencies frequency, the UE determines the alien frequencies frequency Benchmark cell is not present in point；
    If at least one cell to be selected in each cell corresponding to the alien frequencies frequency be present, the UE determines the alien frequencies frequency Benchmark cell be present, the UE chooses a cell as the benchmark cell from least one cell to be selected.
  14. 14. according to the method for claim 13, it is characterised in that the UE chooses from least one cell to be selected One cell as the benchmark cell, including：
    The UE chooses master sync signal normalized value or auxiliary synchronous signals normalized value from least one cell to be selected Maximum cell is as the benchmark cell；
    Or the UE chooses master sync signal normalized value and auxiliary synchronous signals normalized value sum from the cell to be selected Maximum cell is as the benchmark cell.
  15. 15. according to the method for claim 14, it is characterised in that the UE each cells according to corresponding to the alien frequencies frequency Master sync signal calculate master sync signal normalized crosscorrelation value corresponding to each cell respectively, and according to the alien frequencies The auxiliary synchronous signals of each cell corresponding to frequency calculate auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell respectively, Including：
    UE master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
    <mrow> <mi>S</mi> <mi>t</mi> <mi>e</mi> <mi>p</mi> <mn>1</mn> <mi>R</mi> <mi>a</mi> <mi>t</mi> <mi>i</mi> <mi>o</mi> <mo>=</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <msub> <mi>N</mi> <mi>R</mi> </msub> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <mfrac> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>m</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>M</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>n</mi> <mo>=</mo> <mi>m</mi> <mi>L</mi> </mrow> <mrow> <mi>m</mi> <mi>L</mi> <mo>+</mo> <mi>L</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mi>pss</mi> <mo>*</mo> </msup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>p</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>p</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>
    Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0,1 ..., NR- 1, ri pss(n) it is time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is that the master of the cell to be calculated is same Walk signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length, pss* (n) conjugation for being pss (n), L=64, M=2；
    UE auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
    <mrow> <mi>S</mi> <mi>t</mi> <mi>e</mi> <mi>p</mi> <mn>2</mn> <mi>R</mi> <mi>a</mi> <mi>t</mi> <mi>i</mi> <mi>o</mi> <mo>=</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <msub> <mi>N</mi> <mi>R</mi> </msub> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <mfrac> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>m</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>M</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>n</mi> <mo>=</mo> <mi>m</mi> <mi>L</mi> </mrow> <mrow> <mi>m</mi> <mi>L</mi> <mo>+</mo> <mi>L</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mi>sss</mi> <mo>*</mo> </msup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>s</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>s</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>
    Wherein, ri sss(n) it is time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) is described to be calculated Time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
  16. 16. according to the method any one of claim 10-12,14,15, it is characterised in that the UE obtains described different Again and again before timing offset sign corresponding to point, methods described also includes：
    The UE configures the timing offset sign.
  17. 17. according to the method for claim 16, it is characterised in that the UE configures the timing offset sign, including：
    If the UE is TDD terminal, the UE configures the timing offset and is denoted as indicating that each cell is same Walk cell.
  18. 18. according to the method for claim 16, it is characterised in that the UE configures the timing offset sign, including：
    If the UE is FDD terminal, the UE configures institute when indicating progress initial configuration to the timing offset Timing offset is stated to be denoted as indicating that each cell is asynchronous cell.
  19. 19. according to the method for claim 18, it is characterised in that the UE is carried out initially to timing offset sign After configuration, the UE, which configures the timing offset sign, also to be included：
    When the UE carries out the alien frequencies adjacent area search, if timing offset sign indicates that each cell is asynchronous small Area, and the timing offset of each cell that judges to search of the alien frequencies adjacent area search result according to corresponding to the asynchronous cell be less than it is fixed When deviation threshold when, the UE configures the timing offset and is denoted as indicating that each cell is synchronized cells.
  20. 20. according to the method for claim 19, it is characterised in that the UE, which configures the timing offset sign, also to be included：
    After the UE searches in every j alien frequencies adjacent area, configure the timing offset and be denoted as indicating that each cell is asynchronous Cell, j are the positive integer more than or equal to 1.
  21. 21. according to the method any one of claim 10-12, it is characterised in that benchmark cell in the multiple cell Preset time in signal include：The master sync signal and auxiliary synchronous signals of benchmark cell, and its in the multiple cell The master sync signal and auxiliary synchronous signals of his cell.
  22. A kind of 22. user equipment (UE), it is characterised in that including
    Acquisition module, for when the UE carries out homogeneous-frequency adjacent-domain search, obtaining with timing offset sign, institute again and again corresponding to point Timing offset is stated to indicate for indicating that each cell is synchronized cells or asynchronous cell；
    Determining module, it is for each cell in multiple cells according to corresponding to the timing offset sign determination same point again and again No is synchronized cells；
    Receiving module, if being synchronized cells for each cell, received within the search cycle serviced in the multiple cell it is small Signal in the preset time in area, the time within the search cycle in addition to the preset time close radio frequency operation unit, The preset time is the subframe or orthogonal frequency division multiplex OFDM symbol where master sync signal and auxiliary synchronous signals.
  23. 23. UE according to claim 22, it is characterised in that when the UE is FDD terminal, the master is same Step signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, and the receiving module is specifically used for：
    The letter in any one 0 work song frame or any one 5 work song frame of the serving cell is received within the search cycle Number；
    Or
    Received within the search cycle serving cell any one 0 work song frame or any one 5 work song frame it is specific Signal in OFDM symbol, the specific OFDM symbol are the OFDM symbols where the master sync signal and the auxiliary synchronous signals Number.
  24. 24. UE according to claim 22, it is characterised in that when the UE is TDD terminal, the master is same Walk signal to be included in 1 work song frame and 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, described to connect Module is received to be specifically used for：
    The signal in any one group of 0 work song frame and 1 work song frame of the serving cell, Huo Zhe are received within the search cycle The signal in any one group of 5 work song frames and 6 work song frames of the serving cell is received in the search cycle, wherein, described No. 0 Subframe and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
    Or
    Any one group of 0 work song frame of the serving cell and the specific OFDM symbol of 1 work song frame are received within the search cycle Interior signal, or, any one group of 5 work song frames and the spy of 6 work song frames of the serving cell are received within the search cycle Determine the signal in OFDM symbol, wherein, the specific OFDM symbol is the master sync signal and auxiliary synchronous signals place OFDM symbol, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous.
  25. 25. according to the UE any one of claim 22-24, it is characterised in that the UE also includes：
    Configuration module, for configuring the timing offset sign.
  26. 26. UE according to claim 25, it is characterised in that the configuration module is specifically used for：
    If the UE is TDD terminal, configures the timing offset and be denoted as indicating that each cell is synchronous small Area.
  27. 27. UE according to claim 25, it is characterised in that the configuration module is specifically used for：
    If the UE is FDD terminal, when indicating progress initial configuration to the timing offset, configuration is described fixed When deviation be denoted as indicating that each cell is asynchronous cell.
  28. 28. UE according to claim 27, it is characterised in that the configuration module is indicating progress to the timing offset It is additionally operable to after initial configuration：
    When the high level of network side equipment configures the measurement that the UE only carries out the serving cell, and without the homogeneous-frequency adjacent-domain During search, configure the timing offset and be denoted as indicating that each cell is synchronized cells；
    Or when the UE carries out the homogeneous-frequency adjacent-domain search, if timing offset sign indicates that each cell is different Cell is walked, and each cell that UE homogeneous-frequency adjacent-domain search results according to corresponding to the asynchronous cell judge to search is determined When deviation when being less than timing offset threshold value, configure the timing offset and be denoted as indicating that each cell is synchronized cells.
  29. 29. UE according to claim 28, it is characterised in that the configuration module is additionally operable to：
    After being searched in every j homogeneous-frequency adjacent-domain, configure the timing offset and be denoted as indicating that each cell is asynchronous cell, j For the positive integer more than or equal to 1.
  30. 30. the UE according to any one of claim 22-24,26-29, it is characterised in that serviced in the multiple cell Signal in the preset time of cell includes：The master sync signal and auxiliary synchronous signals of serving cell, and the multiple cell In other cells master sync signal and auxiliary synchronous signals.
  31. A kind of 31. user equipment (UE), it is characterised in that including：
    First determining module, it is true according to the result that the alien frequencies adjacent area is searched for for when the UE carries out the search of alien frequencies adjacent area Determine alien frequencies frequency and whether there is benchmark cell；
    Acquisition module, if benchmark cell be present for the alien frequencies frequency, obtain timing offset corresponding to the alien frequencies frequency Sign, the timing offset are indicated for indicating that each cell is synchronized cells or asynchronous cell；
    Second determining module, for each small in multiple cells according to corresponding to the timing offset sign determination alien frequencies frequency Whether area is synchronized cells；
    Receiving module, if being synchronized cells for each cell, it is small that benchmark in the multiple cell is received within the search cycle Signal in the preset time in area, the time within the search cycle in addition to the preset time close radio frequency operation unit, The preset time is the subframe or orthogonal frequency division multiplex OFDM symbol where master sync signal and auxiliary synchronous signals.
  32. 32. UE according to claim 31, it is characterised in that when the UE is FDD terminal, the master is same Step signal and the auxiliary synchronous signals are all contained in 0 work song frame and 5 work song frames, and the receiving module is specifically used for：
    The signal in any one 0 work song frame or any one 5 work song frame of the benchmark cell is received within the search cycle；
    Or
    Any one 0 work song frame of the benchmark cell or the specific OFDM of any one 5 work song frame are received within the search cycle Signal in symbol, the specific OFDM symbol are the OFDM symbol where the master sync signal and the auxiliary synchronous signals.
  33. 33. UE according to claim 31, it is characterised in that when the UE is TDD terminal, the master is same Walk signal to be included in 1 work song frame and 6 work song frames, the auxiliary synchronous signals are included in 0 work song frame and 5 work song frames, described to connect Module is received to be specifically used for：
    The signal in any one group of 0 work song frame and 1 work song frame of the benchmark cell is received within the search cycle, or, The signal in any one group of 5 work song frames and 6 work song frames of the benchmark cell is received within the search cycle, wherein, described 0 Work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous；
    Or
    Any one group of 0 work song frame of the benchmark cell and the specific OFDM symbol of 1 work song frame are received within the search cycle Interior signal, or, any one group of 5 work song frames and the spy of 6 work song frames of the benchmark cell are received within the search cycle Determine the signal in OFDM symbol, the specific OFDM symbol is the OFDM where the master sync signal and the auxiliary synchronous signals Symbol, the 0 work song frame and the 1 work song frame are continuous, and the 5 work song frame and the 6 work song frame are continuous.
  34. 34. according to the UE any one of claim 31-33, it is characterised in that first determining module specifically includes：
    Computing unit, the master sync signal for each cell according to corresponding to the alien frequencies frequency calculate each cell pair respectively The master sync signal normalized crosscorrelation value answered, and the auxiliary synchronous signals of each cell according to corresponding to the alien frequencies frequency are distinguished Calculate auxiliary synchronous signals normalized crosscorrelation value corresponding to each cell；
    Judging unit, for judging to whether there is at least one cell to be selected in each cell corresponding to the alien frequencies frequency, each The master sync signal normalized crosscorrelation value of cell to be selected is more than default master sync signal normalized crosscorrelation threshold value, and The auxiliary synchronous signals normalized crosscorrelation value of each cell to be selected is more than default auxiliary synchronous signals normalized crosscorrelation door Limit value；
    Benchmark cell determining unit, if at least one cell to be selected to be not present in each cell corresponding to the alien frequencies frequency, Then determine that benchmark cell is not present in the alien frequencies frequency, if existing in each cell corresponding to the alien frequencies frequency at least one to be selected Cell, it is determined that the alien frequencies frequency has benchmark cell, and chooses a cell from least one cell to be selected and make For the benchmark cell.
  35. 35. UE according to claim 34, it is characterised in that the benchmark cell determining unit is specifically used for：
    It is maximum to choose from least one cell to be selected master sync signal normalized value or auxiliary synchronous signals normalized value Cell is as the benchmark cell；
    Or to choose from the cell to be selected master sync signal normalized value and auxiliary synchronous signals normalized value sum maximum Cell is as the benchmark cell.
  36. 36. UE according to claim 35, it is characterised in that the computing unit is specifically used for：
    The master sync signal normalized crosscorrelation value step1Ratio according to corresponding to formula (1) calculates each cell：
    <mrow> <mi>S</mi> <mi>t</mi> <mi>e</mi> <mi>p</mi> <mn>1</mn> <mi>R</mi> <mi>a</mi> <mi>t</mi> <mi>i</mi> <mi>o</mi> <mo>=</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <msub> <mi>N</mi> <mi>R</mi> </msub> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <mfrac> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>m</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>M</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>n</mi> <mo>=</mo> <mi>m</mi> <mi>L</mi> </mrow> <mrow> <mi>m</mi> <mi>L</mi> <mo>+</mo> <mi>L</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mi>pss</mi> <mo>*</mo> </msup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>p</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>p</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>
    Wherein, NRFor the number of the reception antenna of the UE, i represents the index of the reception antenna of the UE, i=0,1 ..., NR- 1, ri pss(n) it is time-domain signal corresponding to the master sync signal of cell to be calculated, pss (n) is that the master of the cell to be calculated is same Walk signal corresponding to time-domain signal sampling after time domain sequences, n=0,1 ..., N-1, N be the time domain sequences length, pss* (n) conjugation for being pss (n), L=64, M=2；
    The auxiliary synchronous signals normalized crosscorrelation value step2Ratio according to corresponding to formula (2) calculates each cell：
    <mrow> <mi>S</mi> <mi>t</mi> <mi>e</mi> <mi>p</mi> <mn>2</mn> <mi>R</mi> <mi>a</mi> <mi>t</mi> <mi>i</mi> <mi>o</mi> <mo>=</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <msub> <mi>N</mi> <mi>R</mi> </msub> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <mfrac> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>m</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>M</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <munderover> <mi>&amp;Sigma;</mi> <mrow> <mi>n</mi> <mo>=</mo> <mi>m</mi> <mi>L</mi> </mrow> <mrow> <mi>m</mi> <mi>L</mi> <mo>+</mo> <mi>L</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mi>sss</mi> <mo>*</mo> </msup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>s</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>0</mn> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mn>1</mn> </mrow> </munderover> <msup> <mrow> <mo>|</mo> <msubsup> <mi>r</mi> <mi>i</mi> <mrow> <mi>s</mi> <mi>s</mi> <mi>s</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> <mo>|</mo> </mrow> <mn>2</mn> </msup> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>
    Wherein, ri sss(n) it is time-domain signal corresponding to the auxiliary synchronous signals of the cell to be calculated, sss (n) is described to be calculated Time domain sequences after time-domain signal sampling corresponding to the auxiliary synchronous signals of cell, sss*(n) conjugation for being sss (n).
  37. 37. according to the UE any one of claim 31-33,35,36, it is characterised in that the UE also includes：
    Configuration module, for configuring the timing offset sign.
  38. 38. the UE according to claim 37, it is characterised in that the configuration module is specifically used for：
    If the UE is TDD terminal, configures the timing offset and be denoted as indicating that each cell is synchronous small Area.
  39. 39. the UE according to claim 37, it is characterised in that the configuration module is specifically used for：
    If the UE is FDD terminal, when indicating progress initial configuration to the timing offset, configuration is described fixed When deviation be denoted as indicating that each cell is asynchronous cell.
  40. 40. the UE according to claim 39, it is characterised in that the configuration module is additionally operable to：
    When the UE carries out the alien frequencies adjacent area search, if timing offset sign indicates that each cell is asynchronous small Area, and UE alien frequencies adjacent area search results according to corresponding to the asynchronous cell judge that the timing of each cell that searches is inclined When difference is less than timing offset threshold value, configures the timing offset and be denoted as indicating that each cell is synchronized cells.
  41. 41. UE according to claim 40, it is characterised in that the configuration module is additionally operable to：
    After being searched in every j alien frequencies adjacent area, configure the timing offset and be denoted as indicating that each cell is asynchronous cell, j For the positive integer more than or equal to 1.
  42. 42. according to the UE any one of claim 31-33, it is characterised in that benchmark cell in the multiple cell Signal in preset time includes：The master sync signal and auxiliary synchronous signals of benchmark cell, and other in the multiple cell The master sync signal and auxiliary synchronous signals of cell.
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