CN103813351B - Community measuring method and device - Google Patents
Community measuring method and device Download PDFInfo
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- CN103813351B CN103813351B CN201210445753.4A CN201210445753A CN103813351B CN 103813351 B CN103813351 B CN 103813351B CN 201210445753 A CN201210445753 A CN 201210445753A CN 103813351 B CN103813351 B CN 103813351B
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Abstract
The invention discloses a community measuring method and device, and relates to the wireless communication field; the method comprises the steps of: determining a down symbol of a reference community according to configure parameters of the reference community; determining a down symbol of an adjacent community according to configure parameters of the adjacent community; determining CRS of the adjacent community in a time domain intersection portion of the down symbol of the adjacent community and the down symbol of the reference community; carrying out community measurement in a first frequency domain scope according to the CRS of the adjacent community, wherein the first frequency domain scope is the smaller system band width from the system band width of the adjacent community and the system band width of the reference community, or the first frequency domain scope is a smallest center band width of the system. By employing the scheme, the community measuring device can determine a measuring symbol of the adjacent community in the time domain scope of the reference community according to the system configure parameters, and can carry out community measurement to the measuring symbol in certain frequency domain scope, thereby completing measurement under different community time delay, and the method and device are suitable for the communication system of a time frequency two dimension resource distribution mode, such as an LTE system.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of cell measuring method and device.
Background technology
The development of mobile communication is excessive to speech business plus data service from initial speech business, and data industry
The development of business presents obvious acceleration mode, and increasing user adds 3G (Third Generation) Moblie (abbreviation 3G) system network
Network.User proposes higher requirement to mobile data experience, and the transmittability of 3G system has gradually showed deficiency, then 3G system
The long evolving system (Long Term Evolution, abbreviation LTE) of system arises at the historic moment.
LTE improves and enhances the aerial access technology of 3G, using OFDM (Orthogonal Frequency
Division Multiplexing, abbreviation OFDM) and multiple-input, multiple-output (Multiple-Input Multiple-Output, referred to as
MIMO) as the standard of its wireless network evolution, highest downlink speed 100Mbps (bits per second), upstream rate are designed
50Mbps.LTE technology will greatly promote the experience to mobile communication business for the user, is that operator brings more technology and cost
Advantage.Meanwhile, the leading position of legacy cellular mobile technology has also been consolidated in the appearance of LTE technology.
In mobile radio system, the Seamless Mobile of user equipment (abbreviation UE) is principal character.UE is in a network
State be broadly divided into idle condition and connection status, the therefore mobile management of UE is broadly divided into the mobile management under idle condition
With the mobile management under connection status.Movement under idle condition is mainly realized by cell reselection, and UE is independently carried out；Even
Connect the movement under state mainly to realize by switching, controlled by evolution base station (abbreviation eNodeB) and carry out.And cell reselection
An important evidence with cell switching is exactly the measurement result to Serving cell and adjacent cell for the UE, therefore measures for realizing UE
Seamless Mobile most important.
However, LTE protocol specify only measurement required precision to be reached, do not specify the measuring method of correlation, and
And LTE adopts the resource distribution mode of time-frequency two-dimensional, the measuring method before also cannot using for reference, it is, therefore, desirable to provide a kind of fit
Cell measuring method for LTE system.
Content of the invention
An embodiment of the present invention technical problem to be solved is：Propose one kind and be applied to time frequency two-dimensional resources distribution side
The cell measuring method of formula and device.
A kind of cell measuring method that one side according to embodiments of the present invention provides, including：
Determine the downlink symbol of reference cell according to the configuration parameter of reference cell；Configuration parameter according to adjacent cell determines
The downlink symbol of adjacent cell；Neighbour in determining the time domain common factor of the downlink symbol of adjacent cell and the downlink symbol of reference cell partly
The cell special reference (CRS) of cell；According to the CRS of adjacent cell, carry out cell measurement in the first frequency domain, described
First frequency domain is less system bandwidth in the system bandwidth of adjacent cell and the system bandwidth of reference cell, or, described
First frequency domain is the minimum midbandwidth of system.
As a kind of embodiment of exemplary, the method can also obtain the configuration parameter of reference cell, reference cell
Configuration parameter include the cyclic prefix mode that obtains after the synchronization of reference cell, and obtain from the system information of reference cell
Uplink-downlink configuration pattern, special subframe pattern and the system bandwidth taking；And obtain the configuration parameter of adjacent cell, the configuration of adjacent cell
The time delay of cyclic prefix mode and relative reference cell that parameter obtains after including searching adjacent cell, and from adjacent cell
Uplink-downlink configuration pattern, special subframe pattern and the system bandwidth obtaining in system information.
As a kind of embodiment of exemplary, the downlink symbol of described determination adjacent cell and the downlink symbol of reference cell
Time domain common factor partly in the step of cell special reference CRS of adjacent cell specifically include：Relatively joined according to adjacent cell
Examine the time delay of cell, determine the time domain common factor part of the downlink symbol of adjacent cell and the downlink symbol of reference cell；Little according to neighbour
The cyclic prefix mode in area, the CRS in the descending sub frame of adjacent cell in determining time delay common factor partly；Special according to adjacent cell
Sub-frame mode and cyclic prefix mode, the CRS in the special subframe of adjacent cell in determining time delay common factor partly.
As a kind of embodiment of exemplary, the described configuration parameter according to reference cell determines the descending of reference cell
The step of symbol specifically includes：According to the uplink-downlink configuration pattern of reference cell, determine the descending sub frame of reference cell and special
Subframe；Special subframe pattern according to reference cell and cyclic prefix mode, determine descending in the special subframe of reference cell
Symbol；Wherein, the downlink symbol of reference cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
As a kind of embodiment of exemplary, the described configuration parameter according to adjacent cell determines the downlink symbol of adjacent cell
Step specifically include：According to the uplink-downlink configuration pattern of adjacent cell, determine descending sub frame and the special subframe of adjacent cell；According to
The special subframe pattern of adjacent cell and cyclic prefix mode, determine the downlink symbol in the special subframe of adjacent cell；Wherein, adjacent little
The downlink symbol in area includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
As a kind of embodiment of exemplary, the described CRS according to adjacent cell, carry out cell in the first frequency domain
The step of measurement specifically includes：In the first frequency domain, linear averaging is carried out to the power of the CRS of adjacent cell, obtain this neighbour little
The Reference Signal Received Power RSRP in area；Or, in the first frequency domain, the power of the symbol of the CRS with adjacent cell is entered
Row linear averaging, obtains the carrier received signal intensity instruction RSSI of adjacent cell.
As a kind of embodiment of exemplary, also include：According to the cyclic prefix mode of reference cell, determine with reference to little
CRS in the descending sub frame in area；Special subframe pattern according to reference cell and cyclic prefix mode, determine the spy of reference cell
CRS in different subframe；According to the CRS of reference cell, carry out cell measurement, described second frequency domain in the second frequency domain
For the system bandwidth of reference cell, or, the second frequency domain is the minimum midbandwidth of system.
As a kind of embodiment of exemplary, the described CRS according to reference cell, carry out little in the second frequency domain
The step of region measurement specifically includes：In the second frequency domain, linear averaging is carried out to the power of the CRS of reference cell, be somebody's turn to do
The RSRP of reference cell；Or, in the second frequency domain, the power of the symbol of the CRS with reference cell is linearly put down
All, obtain the RSSI of reference cell.
A kind of cell measurement device that another aspect according to embodiments of the present invention provides, including：
Examine cell downlink symbol determining unit, for determining the descending symbol of reference cell according to the configuration parameter of reference cell
Number；Adjacent cell downlink symbol determining unit, for determining the downlink symbol of adjacent cell according to the configuration parameter of adjacent cell；With reference to letter
Number determining unit is little for the neighbour in determining the time domain common factor of the downlink symbol of adjacent cell and the downlink symbol of reference cell partly
Cell special reference CRS in area；And cell measurement unit, for the CRS according to adjacent cell, in the first frequency domain
Carry out cell measurement, described first frequency domain is less system in the system bandwidth of adjacent cell and the system bandwidth of reference cell
Regiment commander is wide, or, described first frequency domain is the minimum midbandwidth of system.
As a kind of embodiment of exemplary, also include：Configuration parameter acquiring unit, for obtaining joining of reference cell
Put parameter, the configuration parameter of reference cell includes the cyclic prefix mode obtaining after the synchronization of reference cell, and from reference to little
Uplink-downlink configuration pattern, special subframe pattern and the system bandwidth obtaining in the system information in area；And obtain the configuration of adjacent cell
Parameter, the configuration parameter of adjacent cell include searching adjacent cell after obtain cyclic prefix mode and relative reference cell when
Prolong, and uplink-downlink configuration pattern, special subframe pattern and the system bandwidth obtaining from the system information of adjacent cell.
As a kind of embodiment of exemplary, described reference signal determining unit includes：Ginseng downlink symbol is occured simultaneously and is determined
Subelement, determines the downlink symbol of adjacent cell and the descending of reference cell for according to adjacent cell relative to the time delay of reference cell
The time domain common factor part of symbol；Adjacent cell reference signal determination subelement, for the cyclic prefix mode according to adjacent cell, determines
Time delay occur simultaneously partly in the descending sub frame of adjacent cell in CRS；Special subframe pattern according to adjacent cell and Cyclic Prefix mould
Formula, the CRS in the special subframe of adjacent cell in determining time delay common factor partly.
As a kind of embodiment of exemplary, described reference cell downlink symbol determining unit, specifically for according to ginseng
Examine the uplink-downlink configuration pattern of cell, determine descending sub frame and the special subframe of reference cell；Special son according to reference cell
Frame pattern and cyclic prefix mode, determine the downlink symbol in the special subframe of reference cell；Wherein, the descending symbol of reference cell
Number include the downlink symbol in whole symbols and its special subframe of its descending sub frame.
As a kind of embodiment of exemplary, described adjacent cell downlink symbol determining unit, specifically for little according to neighbour
The uplink-downlink configuration pattern in area, determines descending sub frame and the special subframe of adjacent cell；Special subframe pattern according to adjacent cell and
Cyclic prefix mode, determines the downlink symbol in the special subframe of adjacent cell；Wherein, to include it descending for the downlink symbol of adjacent cell
Downlink symbol in whole symbols of subframe and its special subframe.
As a kind of embodiment of exemplary, described cell measurement unit, specifically for right in the first frequency domain
The power of the CRS of adjacent cell carries out linear averaging, obtains the RSRP of this adjacent cell；Or, to carrying in the first frequency domain
The power of the symbol of the CRS of adjacent cell carries out linear averaging, obtains the RSSI of adjacent cell.
As a kind of embodiment of exemplary, described reference signal determining unit, it is additionally operable to following according to reference cell
Ring prefix pattern, determines the CRS in the descending sub frame of reference cell；Special subframe pattern according to reference cell and Cyclic Prefix
Pattern, determines the CRS in the special subframe of reference cell；Described cell measurement unit, is additionally operable to the CRS according to reference cell,
Carry out cell measurement in the second frequency domain, described second frequency domain is the system bandwidth of reference cell, or, described the
Two frequency domain are the minimum midbandwidth of system.
The cell measurement scheme being provided based on the present invention, cell measurement device can be according to system configuration parameter with reference to little
Determine the measurement symbol of adjacent cell in the time domain scale in area, and in certain frequency domain, cell survey is carried out to measurement symbol
Amount is such that it is able to complete measurement it is adaptable to the communication system of the time frequency two-dimensional resources method of salary distribution, example under different cell time delays
As LTE system etc..
By the detailed description to the exemplary embodiment of the present invention referring to the drawings, the further feature of the present invention and its
Advantage will be made apparent from.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used
So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 illustrates the schematic flow sheet of an exemplary embodiment of cell measuring method of the present invention.
Fig. 2 illustrates the schematic flow sheet of another exemplary embodiment of cell measuring method of the present invention.
Fig. 3 illustrates the schematic flow sheet of the further exemplary embodiment of cell measuring method of the present invention.
Fig. 4 illustrates reference cell of the present invention 1 time subframe of pattern 0 to the ascending-descending subframes distribution schematic diagram of subframe 9.
Fig. 5 illustrates reference cell of the present invention 1 time subframe of pattern 9 to the ascending-descending subframes distribution schematic diagram of subframe 8.
Fig. 6 illustrates the ascending-descending subframes distribution and time delay relation of one exemplary reference cell of the present invention and its adjacent cell
Schematic diagram.
Fig. 7 illustrates the structural representation of an exemplary embodiment of cell measurement device of the present invention.
Fig. 8 illustrates the structural representation of another exemplary embodiment of cell measurement device of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, and never conduct to the present invention and its application or makes
Any restriction.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
Unless specifically stated otherwise, the part otherwise illustrating in these embodiments and positioned opposite, the digital table of step
Reach formula and numerical value does not limit the scope of the invention.
Simultaneously it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
When in the case of, described technology, method and apparatus should be considered authorize description a part.Institute that is shown here and discussing
Have in example, any occurrence should be construed as merely exemplary, not as restriction.Therefore, exemplary embodiment
Other examples can have different values.
In the present invention, because the different districts on same frequency might have different system times and system bandwidth,
And a frequency can be received with the system time of a cell and system bandwidth, therefore, the present invention will be used as reception benchmark
Cell be referred to as reference cell, reference cell can be for example Serving cell.
Fig. 1 illustrates the schematic flow sheet of an exemplary embodiment of cell measuring method of the present invention.As shown in figure 1, should
The method of embodiment can be executed by cell measurement device, and cell measurement device can be for example various mobile terminals etc., but not
It is limited to this.The method specifically includes following steps：
S102, determines the downlink symbol of reference cell according to the configuration parameter of reference cell.
Wherein, the configuration parameter of reference cell for example can include the cell ID of reference cell, cyclic prefix mode, on
Downstream arrangements pattern, special subframe pattern, system bandwidth etc., but not limited to this.The cell ID of reference cell and Cyclic Prefix
Pattern can obtain after the synchronization of reference cell.Uplink-downlink configuration pattern, special subframe pattern and system bandwidth can be from ginsengs
Examine in the system information of cell and obtain, for example can from the Master Information Block of reference cell (Master Information Block,
Abbreviation MIB) and the middle acquisition of system information block (System Information Blocks, abbreviation SIB).
The downlink symbol of reference cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.Make
For a kind of determination method of exemplary reference cell downlink symbol：
It is possible, firstly, to according to the uplink-downlink configuration pattern of reference cell, determine the descending sub frame of reference cell and special son
Frame, for example, with reference to the uplink-downlink configuration table shown in table 1, has 7 kinds of uplink-downlink configuration patterns, every kind of uplink-downlink configuration pattern is all
Specify that the corresponding relation of the subframe type that subframe sequence number is transmitted with it, subframe type includes sub-frame of uplink (being represented with U), descending
Subframe (being represented with D) and special subframe (being represented with S).
Table 1 uplink-downlink configuration table
It is then possible to according to the special subframe pattern of reference cell and cyclic prefix mode, determine the special of reference cell
Downlink symbol in subframe, for example, with reference to the special subframe allocation list shown in table 2, has 9 kinds of special subframe configuration modes, often
Plant special subframe configuration mode and all specify that descending pilot frequency time slot (Downlink Pilot under different cyclic prefix modes
Time Slot, abbreviation DwPTS) quantity, the downlink symbol of special subframe is DwPTS.In addition, except DwPTS, special subframe
Also include uplink pilot time slot (Uplink Pilot Time Slot, abbreviation UpPTS) and protection interval (abbreviation GP).
Table 2 special subframe allocation list
S104, determines the downlink symbol of adjacent cell according to the configuration parameter of adjacent cell.
Wherein, the configuration parameter of adjacent cell for example can include the cell ID of adjacent cell, cyclic prefix mode, relatively ginseng
Examine the time delay of cell, uplink-downlink configuration pattern, special subframe pattern, system bandwidth etc., but not limited to this.The cell mark of adjacent cell
Know, cyclic prefix mode obtains after may search for adjacent cell with the time delay of relative reference cell.Uplink-downlink configuration pattern, spy
Different sub-frame mode, system bandwidth can obtain from the system information of adjacent cell, for example can from the Master Information Block of adjacent cell with
Obtain in system information block.Adjacent cell can have one or more.
Wherein, the downlink symbol of adjacent cell includes the descending symbol in whole symbols and its special subframe of its descending sub frame
Number.Similar to the determination method of reference cell downlink symbol, when determining adjacent cell downlink symbol, can be upper and lower according to adjacent cell
Row configuration mode, determines descending sub frame and the special subframe of adjacent cell；Special subframe pattern according to adjacent cell and Cyclic Prefix
Pattern, determines the downlink symbol in the special subframe of adjacent cell.
S106, the adjacent cell in determining the time domain common factor of the downlink symbol of adjacent cell and the downlink symbol of reference cell partly
Cell special reference (Cell-specific Reference Signal, abbreviation CRS).
Determine method as a kind of exemplary adjacent cell CRS, can according to adjacent cell relative to reference cell time delay, really
Determine the time domain common factor part of the downlink symbol of adjacent cell and the downlink symbol of reference cell, the then Cyclic Prefix according to adjacent cell
Pattern, the CRS in the descending sub frame of adjacent cell in determining time delay common factor partly, and the special subframe pattern according to adjacent cell and
Cyclic prefix mode, the CRS in the special subframe of adjacent cell in determining time delay common factor partly.
S108, according to the CRS of adjacent cell, carries out cell measurement in the first frequency domain, and the first frequency domain is adjacent little
Less system bandwidth in the system bandwidth of the system bandwidth in area and reference cell, or, the first frequency domain is that system is minimum
Midbandwidth, for example, in LTE system, the first frequency domain can be system center 1.08MHz bandwidth.
Cell measurement includes：Reference Signal Received Power (abbreviation RSRP), carrier received signal intensity indicate (referred to as
RSSI), Reference Signal Received Quality (abbreviation RSRQ) etc..In the first frequency domain, line is entered to the power of the CRS of adjacent cell
Mild-natured equal, obtain the Reference Signal Received Power RSRP of this adjacent cell.This RSRP represents the absolute work(of the reference signal receiving
Rate.In the first frequency domain, linear averaging is carried out to the power of the symbol of the CRS with adjacent cell, obtain the carrier wave of adjacent cell
Received signal strength indicator RSSI.RSRQ can be calculated according to RSRP and RSSI, this RSRQ represent reference signal power with
Receive the relative ratio of general power, specifically can be calculated using equation below：
RSRQ=N × RSRP/RSSI,
Wherein, N represents the number of (i.e. in the first frequency domain) Resource Block (abbreviation RB) Measurement bandwidth Nei.
In addition, when carrying out measurement of correlation, all or part of signal in adjacent cell CRS can be selected to be used for meter
Calculate.When selecting the whole signals in adjacent cell CRS to be used for survey calculation, with respect to selected section signal, measurement can be shortened
Persistent period, provide certainty of measurement.
Above-mentioned cell measuring method, can determine adjacent cell according to system configuration parameter in the time domain scale of reference cell
Measurement symbol, and in certain frequency domain, cell measurement is carried out such that it is able in different cells to measurement symbol
Measurement is completed it is adaptable to communication system of the time frequency two-dimensional resources method of salary distribution, such as LTE system etc. under prolonging.
The present invention can also measure to reference cell.Fig. 2 illustrates another example of cell measuring method of the present invention
The schematic flow sheet of property embodiment.As shown in Fig. 2 the method for this embodiment also include on the basis of embodiment illustrated in fig. 1 with
Lower step：
S210, according to the cyclic prefix mode of reference cell, determines the CRS in the descending sub frame of reference cell.
S212, the special subframe pattern according to reference cell and cyclic prefix mode, determine the special subframe of reference cell
In CRS.
S214, according to the CRS of reference cell, carries out cell measurement in the second frequency domain, and the second frequency domain is ginseng
Examine the system bandwidth of cell, or, the second frequency domain is the minimum midbandwidth of system, for example, in LTE system, second
Frequency domain can be the center 1.08MHz bandwidth of system.
Similar to adjacent cell, the cell measurement of reference cell can include：To reference cell in the second frequency domain
The power of CRS carries out linear averaging, obtains the RSRP of this reference cell；To with reference cell in the second frequency domain
The power of the symbol of CRS carries out linear averaging, obtains the RSSI of reference cell.Can be calculated according to RSRP and RSSI
RSRQ, specific formula for calculation is identical with the computing formula in adjacent cell, repeats no more here.
It should be noted that the measurement order in no particular order to reference cell and adjacent cell.
Above-mentioned cell measuring method, not only can measure to adjacent cell, and reference cell can also be measured, from
And be that device in the communication system of the time frequency two-dimensional resources method of salary distribution provides foundation when carrying out cell reselection and cell switching,
To realize the Seamless Mobile of device.
An example is set forth below, to make the solution of the present invention clearer.Fig. 3 illustrates cell measuring method of the present invention
Further exemplary embodiment schematic flow sheet.As shown in figure 3, the method for this embodiment comprises the following steps：
S302, reference cell is synchronous, obtains the configuration parameters such as cell ID and the cyclic prefix mode of reference cell.
S304, obtain reference cell system information, including uplink-downlink configuration pattern,
The configuration parameters such as special subframe pattern, system bandwidth.
For example, the uplink-downlink configuration pattern of reference cell is pattern 1, understands in conjunction with table 1, the up-downgoing of subframe 0 to subframe 9
Subframe is distributed as shown in figure 4, wherein oblique line portion represents its downlink symbol.Because, under this pattern 1, subframe 0 is descending sub frame,
One or more subframes are also descending sub frame afterwards, therefore can be used for measuring together with subframe 0.Here pattern is resequenced,
Fig. 5 shows subframe 9 to the ascending-descending subframes distribution of subframe 8.
S306, searches for adjacent cell, the cell ID of acquisition adjacent cell, the relatively time delay of reference cell, cyclic prefix mode
Deng configuration parameter.
S308, obtains the system information of each adjacent cell, including the uplink-downlink configuration pattern of adjacent cell, special subframe
The configuration parameters such as pattern, system bandwidth.
For example, two adjacent cells have been searched, the uplink-downlink configuration pattern of adjacent cell 1 is pattern 2, its relative reference cell
Time delay be time delay 1, the uplink-downlink configuration pattern of adjacent cell 2 is pattern 1, and the time delay of its reference cell relatively is time delay 2, according to
From subframe 9 to the order of subframe 8, then the ascending-descending subframes distribution and time delay relation of reference cell and its adjacent cell is as shown in Figure 6.
S310, the configuration parameter according to reference cell selects CRS in its downlink symbol, carries out in the second frequency domain
Cell measurement.
As shown in fig. 6, the meshing of reference cell represents the downlink symbol part of reference cell.Reference cell is come
Say, downlink symbol partly in CRS may serve to measure, Measurement bandwidth is the system bandwidth of reference cell or system
Center 1.08MHz bandwidth.
S312, the configuration parameter according to adjacent cell and the configuration parameter of reference cell, determine that the two occurs simultaneously in downlink symbol
Partial CRS, carries out cell measurement in the first frequency domain.
As shown in fig. 6, the meshing of adjacent cell represents the downlink symbol common factor part of adjacent cell and reference cell, grid
Partial CRS measures for adjacent cell, and oblique line portion represents and is not received by adjacent cell due to what cell time delay caused
Downlink symbol region.Measurement bandwidth is less system bandwidth or system in adjacent cell and the system bandwidth both reference cell
Center 1.08MHz bandwidth.
Above-mentioned cell measuring method, the time domain scale that cell measurement device can be according to system configuration parameter in reference cell
Interior determine adjacent cell measurement symbol, and in certain frequency domain to measurement symbol carry out cell measurement such that it is able to
Measurement is completed it is adaptable to communication system of the time frequency two-dimensional resources method of salary distribution, such as LTE system etc. under different cell time delays.
Furthermore it is also possible to measure to reference cell, thus existing for the device in the communication system of the time frequency two-dimensional resources method of salary distribution
Carry out providing foundation, to realize the Seamless Mobile of device when cell reselection and cell switching.
Fig. 7 illustrates the structural representation of an exemplary embodiment of cell measurement device of the present invention.As shown in fig. 7, should
The device of embodiment includes：
Reference cell downlink symbol determining unit 702, determines reference cell for the configuration parameter according to reference cell
Downlink symbol；
Adjacent cell downlink symbol determining unit 704, for determining the descending symbol of adjacent cell according to the configuration parameter of adjacent cell
Number；
Reference signal determining unit 706, for determine the downlink symbol of adjacent cell and the downlink symbol of reference cell when
Domain occur simultaneously partly in adjacent cell CRS；And
Cell measurement unit 708, for the CRS according to adjacent cell, carries out cell measurement in the first frequency domain, and first
Frequency domain is less system bandwidth in the system bandwidth of adjacent cell and the system bandwidth of reference cell, or, the first frequency domain
Scope is the minimum midbandwidth of system.
Fig. 8 illustrates the structural representation of another exemplary embodiment of cell measurement device of the present invention.As shown in figure 8,
The device of this embodiment also includes：Configuration parameter acquiring unit 810, for obtaining the configuration parameter of reference cell, reference cell
Configuration parameter include the cyclic prefix mode that obtains after the synchronization of reference cell, and obtain from the system information of reference cell
Uplink-downlink configuration pattern, special subframe pattern and the system bandwidth taking；And obtain the configuration parameter of adjacent cell, the configuration of adjacent cell
The time delay of cyclic prefix mode and relative reference cell that parameter obtains after including searching adjacent cell, and from adjacent cell
Uplink-downlink configuration pattern, special subframe pattern and the system bandwidth obtaining in system information.
Based on the embodiment shown in Fig. 7 or Fig. 8, reference cell downlink symbol determining unit 702, specifically can be used for root
According to the uplink-downlink configuration pattern of reference cell, determine descending sub frame and the special subframe of reference cell；Spy according to reference cell
Different sub-frame mode and cyclic prefix mode, determine the downlink symbol in the special subframe of reference cell；Wherein, under reference cell
Row symbol includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
Based on the embodiment shown in Fig. 7 or Fig. 8, adjacent cell downlink symbol determining unit 704, specifically can be used for basis
The uplink-downlink configuration pattern of adjacent cell, determines descending sub frame and the special subframe of adjacent cell；Special subframe mould according to adjacent cell
Formula and cyclic prefix mode, determine the downlink symbol in the special subframe of adjacent cell；Wherein, the downlink symbol of adjacent cell includes it
Downlink symbol in whole symbols of descending sub frame and its special subframe.
Based on the embodiment shown in Fig. 7 or Fig. 8, reference signal determining unit 706 includes：
Downlink symbol common factor determination subelement, determines adjacent cell for according to adjacent cell relative to the time delay of reference cell
The time domain common factor part of the downlink symbol of downlink symbol and reference cell；And
Adjacent cell reference signal determination subelement, for the cyclic prefix mode according to adjacent cell, determines time delay common factor portion
The CRS in the descending sub frame of adjacent cell in point；Special subframe pattern according to adjacent cell and cyclic prefix mode, determine time delay
The CRS in the special subframe of adjacent cell in occuring simultaneously partly.
Based on the embodiment shown in Fig. 7 or Fig. 8, cell measurement unit 708, specifically can be used in the first frequency domain
The power of the interior CRS to adjacent cell carries out linear averaging, obtains the RSRP of this adjacent cell；Or, right in the first frequency domain
The power of the symbol of the CRS with adjacent cell carries out linear averaging, obtains the RSSI of adjacent cell.Can be counted according to RSRP and RSSI
Calculation obtains RSRQ, and specific formula for calculation may be referred to aforementioned.
Based on the embodiment shown in Fig. 7 or Fig. 8, reference signal determining unit 706, it is additionally operable to following according to reference cell
Ring prefix pattern, determines the CRS in the descending sub frame of reference cell；Special subframe pattern according to reference cell and Cyclic Prefix
Pattern, determines the CRS in the special subframe of reference cell.Accordingly, cell measurement unit 708, is additionally operable to according to reference cell
CRS, carry out cell measurement in the second frequency domain, the second frequency domain be reference cell system bandwidth, or, second
Frequency domain is the minimum midbandwidth of system.
Cell measurement unit 708, when measuring to reference cell, specifically in the second frequency domain to reference
The power of the CRS of cell carries out linear averaging, obtains the RSRP of this reference cell；To with reference to little in the second frequency domain
The power of the symbol of the CRS in area carries out linear averaging, obtains the RSSI of reference cell.Can be calculated according to RSRP and RSSI
RSRQ, specific formula for calculation is identical with the computing formula in adjacent cell, repeats no more here.
Above-mentioned cell measurement device determines the survey of adjacent cell in the time domain scale of reference cell according to system configuration parameter
Quantity symbol, and in certain frequency domain, cell measurement is carried out such that it is able under different cell time delays to measurement symbol
Complete measurement it is adaptable to communication system of the time frequency two-dimensional resources method of salary distribution, such as LTE system etc..Furthermore it is also possible to reference
Cell measures, thus carrying out cell reselection and cell for the device in the communication system of the time frequency two-dimensional resources method of salary distribution
Foundation is provided, to realize the Seamless Mobile of device during switching.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can pass through hardware
To complete it is also possible to the hardware being instructed correlation by program is completed, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (15)
1. a kind of cell measuring method, including：
Determine the downlink symbol of reference cell according to the configuration parameter of reference cell, reference cell is little as reception benchmark
Area；
Determine the downlink symbol of adjacent cell according to the configuration parameter of adjacent cell；
The cell of the adjacent cell in determining the time domain common factor of the downlink symbol of adjacent cell and the downlink symbol of reference cell partly is special
Use reference signal CRS；
According to the CRS of adjacent cell, carry out cell measurement in the first frequency domain, described first frequency domain for adjacent cell is
Less system bandwidth in the wide system bandwidth with reference cell of regiment commander, or, described first frequency domain is that system is minimum
Midbandwidth.
2. method according to claim 1 is it is characterised in that also include：
Obtain the configuration parameter of reference cell, before the configuration parameter of reference cell includes the circulation obtaining after the synchronization of reference cell
Louver moudling formula, and uplink-downlink configuration pattern, special subframe pattern and the system bandwidth obtaining from the system information of reference cell；
Obtain the configuration parameter of adjacent cell, the configuration parameter of adjacent cell includes the Cyclic Prefix mould obtaining after searching adjacent cell
The time delay of formula and relative reference cell, and obtain from the system information of adjacent cell uplink-downlink configuration pattern, special subframe
Pattern and system bandwidth.
3. method according to claim 1 and 2 is it is characterised in that the described configuration parameter according to reference cell determines ginseng
The step examining the downlink symbol of cell specifically includes：
According to the uplink-downlink configuration pattern of reference cell, determine descending sub frame and the special subframe of reference cell；
Special subframe pattern according to reference cell and cyclic prefix mode, determine the descending symbol in the special subframe of reference cell
Number；
Wherein, the downlink symbol of reference cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
4. method according to claim 1 and 2 is it is characterised in that the described configuration parameter according to adjacent cell determines that neighbour is little
The step of the downlink symbol in area specifically includes：
According to the uplink-downlink configuration pattern of adjacent cell, determine descending sub frame and the special subframe of adjacent cell；
Special subframe pattern according to adjacent cell and cyclic prefix mode, determine the downlink symbol in the special subframe of adjacent cell；
Wherein, the downlink symbol of adjacent cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
5. method according to claim 1 and 2 it is characterised in that the downlink symbol of described determination adjacent cell with reference to little
The time domain common factor of the downlink symbol in area partly in the step of cell special reference CRS of adjacent cell specifically include：
According to adjacent cell relative to reference cell time delay, determine the downlink symbol of adjacent cell and the downlink symbol of reference cell when
Domain common factor part；
According to the cyclic prefix mode of adjacent cell, the CRS in the descending sub frame of adjacent cell in determining time delay common factor partly；
Special subframe pattern according to adjacent cell and cyclic prefix mode, the special son of the adjacent cell in determining time delay common factor partly
CRS in frame.
6. method according to claim 1 is it is characterised in that the described CRS according to adjacent cell, in the first frequency domain
The step carrying out cell measurement specifically includes：
In the first frequency domain, linear averaging is carried out to the power of the CRS of adjacent cell, the reference signal obtaining this adjacent cell connects
Receive power RSRP；Or,
In the first frequency domain, linear averaging is carried out to the power of the symbol of the CRS with adjacent cell, obtain the load of adjacent cell
Ripple received signal strength indicator RSSI.
7. method according to claim 1 and 2 is it is characterised in that also include：
According to the cyclic prefix mode of reference cell, determine the CRS in the descending sub frame of reference cell；
Special subframe pattern according to reference cell and cyclic prefix mode, determine the CRS in the special subframe of reference cell；
According to the CRS of reference cell, carry out cell measurement in the second frequency domain, described second frequency domain is reference cell
System bandwidth, or, described second frequency domain is the minimum midbandwidth of system.
8. method according to claim 7 is it is characterised in that the described CRS according to reference cell, in the second frequency domain
The step inside carrying out cell measurement specifically includes：
In the second frequency domain, linear averaging is carried out to the power of the CRS of reference cell, obtain the RSRP of this reference cell；Or
Person,
In the second frequency domain, linear averaging is carried out to the power of the symbol of the CRS with reference cell, obtain reference cell
RSSI.
9. a kind of cell measurement device, including：
Reference cell downlink symbol determining unit, for determining the descending symbol of reference cell according to the configuration parameter of reference cell
Number, reference cell is as the cell receiving benchmark；
Adjacent cell downlink symbol determining unit, for determining the downlink symbol of adjacent cell according to the configuration parameter of adjacent cell；
Reference signal determining unit, for determining the time domain common factor portion of the downlink symbol of adjacent cell and the downlink symbol of reference cell
Cell special reference CRS of the adjacent cell in point；And
Cell measurement unit, for the CRS according to adjacent cell, carries out cell measurement, described first frequency in the first frequency domain
Domain scope is less system bandwidth in the system bandwidth of adjacent cell and the system bandwidth of reference cell, or, described first frequency
Domain scope is the minimum midbandwidth of system.
10. device according to claim 9 is it is characterised in that also include：
Configuration parameter acquiring unit, for obtaining the configuration parameter of reference cell, the configuration parameter of reference cell is included with reference to little
After area's synchronization obtain cyclic prefix mode, and from the system information of reference cell obtain uplink-downlink configuration pattern,
Special subframe pattern and system bandwidth；And obtaining the configuration parameter of adjacent cell, the configuration parameter of adjacent cell includes searching adjacent little
The time delay of the cyclic prefix mode and the relative reference cell that obtain after area, and from the system information of adjacent cell acquisition upper
Downstream arrangements pattern, special subframe pattern and system bandwidth.
11. devices according to claim 9 or 10, it is characterised in that described reference cell downlink symbol determining unit, have
Body is used for
According to the uplink-downlink configuration pattern of reference cell, determine descending sub frame and the special subframe of reference cell；
Special subframe pattern according to reference cell and cyclic prefix mode, determine the descending symbol in the special subframe of reference cell
Number；
Wherein, the downlink symbol of reference cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
12. devices according to claim 9 or 10 it is characterised in that described adjacent cell downlink symbol determining unit, specifically
For
According to the uplink-downlink configuration pattern of adjacent cell, determine descending sub frame and the special subframe of adjacent cell；
Special subframe pattern according to adjacent cell and cyclic prefix mode, determine the downlink symbol in the special subframe of adjacent cell；
Wherein, the downlink symbol of adjacent cell includes the downlink symbol in whole symbols and its special subframe of its descending sub frame.
13. devices according to claim 9 or 10 are it is characterised in that described reference signal determining unit includes：
Downlink symbol common factor determination subelement, determines the descending of adjacent cell for according to adjacent cell relative to the time delay of reference cell
The time domain common factor part of the downlink symbol of symbol and reference cell；And
Adjacent cell reference signal determination subelement, for the cyclic prefix mode according to adjacent cell, in determining time delay common factor partly
The descending sub frame of adjacent cell in CRS；Special subframe pattern according to adjacent cell and cyclic prefix mode, determine that time delay is occured simultaneously
CRS in the special subframe of the adjacent cell in partly.
14. devices according to claim 9 it is characterised in that described cell measurement unit, specifically for
In the first frequency domain, linear averaging is carried out to the power of the CRS of adjacent cell, the reference signal obtaining this adjacent cell connects
Receive power RSRP；Or,
In the first frequency domain, linear averaging is carried out to the power of the symbol of the CRS with adjacent cell, obtain the load of adjacent cell
Ripple received signal strength indicator RSSI.
15. devices according to claim 9 or 10, it is characterised in that described reference signal determining unit, are additionally operable to basis
The cyclic prefix mode of reference cell, determines the CRS in the descending sub frame of reference cell；Special subframe mould according to reference cell
Formula and cyclic prefix mode, determine the CRS in the special subframe of reference cell；
Described cell measurement unit, is additionally operable to the CRS according to reference cell, carries out cell measurement, institute in the second frequency domain
State the system bandwidth that the second frequency domain is reference cell, or, described second frequency domain is the minimum midbandwidth of system.
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| CN201210445753.4A CN103813351B (en) | 2012-11-09 | 2012-11-09 | Community measuring method and device |
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| CN201210445753.4A CN103813351B (en) | 2012-11-09 | 2012-11-09 | Community measuring method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130086A1 (en) * | 2009-05-12 | 2010-11-18 | 华为技术有限公司 | Configuration method of mobile terminal measuring cell, radio resources control device and terminal |
| CN102098265A (en) * | 2011-03-08 | 2011-06-15 | 华为技术有限公司 | Method and device for determining reference signal received power (RSRP) |
| CN102201879A (en) * | 2011-06-20 | 2011-09-28 | 合肥东芯通信股份有限公司 | Measurement method and device for interference noise of long term evolution (LTE) system |
| WO2012112101A1 (en) * | 2011-02-15 | 2012-08-23 | Telefonaktiebolaget L M Ericsson (Publ) | Configuration of reference signal transmission bandwidth |
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2012
- 2012-11-09 CN CN201210445753.4A patent/CN103813351B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130086A1 (en) * | 2009-05-12 | 2010-11-18 | 华为技术有限公司 | Configuration method of mobile terminal measuring cell, radio resources control device and terminal |
| WO2012112101A1 (en) * | 2011-02-15 | 2012-08-23 | Telefonaktiebolaget L M Ericsson (Publ) | Configuration of reference signal transmission bandwidth |
| CN102098265A (en) * | 2011-03-08 | 2011-06-15 | 华为技术有限公司 | Method and device for determining reference signal received power (RSRP) |
| CN102201879A (en) * | 2011-06-20 | 2011-09-28 | 合肥东芯通信股份有限公司 | Measurement method and device for interference noise of long term evolution (LTE) system |
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| CN103813351A (en) | 2014-05-21 |
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