CN101064899A - Method for measuring adjacent cell and user terminal - Google Patents
Method for measuring adjacent cell and user terminal Download PDFInfo
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- CN101064899A CN101064899A CNA2006101404262A CN200610140426A CN101064899A CN 101064899 A CN101064899 A CN 101064899A CN A2006101404262 A CNA2006101404262 A CN A2006101404262A CN 200610140426 A CN200610140426 A CN 200610140426A CN 101064899 A CN101064899 A CN 101064899A
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Abstract
The invention disclose a method to measure the adjacent section, the method includes: A. determines the measuring type of target adjacent section; B. measuring the adjacent section according to the determined measuring type. The invention also discloses user terminal for measuring the adjacent section. The schedule accords with the variable real condition of bandwidth in the application environment of the third generation movable communication technique long evolution project (LTE), and it can measure the adjacent section in LTE system using the invention.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of method and user terminal of measuring adjacent sub-district.
Background technology
Along with the development of personal digital terminal (PDA) and notebook computer is popularized, and the becoming stronger day by day of cell-phone function, the mobile phone users that comprises PDA, notebook computer and mobile phone wishes to enjoy high-quality service on net anywhere or anytime, (MobileBroadband Wireless Access, MBWA) rise in market in a new mobile broadband wireless access.MBWA market is one, and it can provide the broadband wireless access business parallel with broadband cabled fixedly access towards new markets fixing and that mobile communication merges, supports to move and uses.
At present, the strongest competitor is the third generation (3G) mobile communication technology and global inserting of microwave interoperability (World Interoperability for Microwave Access, WIMAX) technology on the MBWA market.WIMAX adopts fixing/mobile broadband wireless metropolitan area network technology, core net is the IP network of standard, the physical layer of its Radio Link and medium access control (Medium Access Control, MAC) requirement of the Packet data service of demblee form has been considered in Ceng design, can the adaptive wireless channel circumstance, speed can reach per second tens megabits; The core net framework of 3G mobile communication service is cellular mobile communications networks substantially, downloading rate is below 100kbit/s, the 3G system is supporting that IP data service time-frequency spectrum efficient is low, and it is towards the demand of the inadaptability in structure burst type IP data service that is connected and fixed bandwidth.The high speed downlink packet access (HSDPA) and the high speed uplink packet access (HSUPA) that are called as the 3.5G technology can be brought up to downloading rate more than the 10Mbit/s, but HSDPA and HSUPA are subjected to former system constraint bigger, and performance is not ideal enough.On the MBWA market in a period of time, HSDPA, HSUPA will be in a disadvantageous position to the competition of WIMAX.
In order to improve the competitiveness of 3G in emerging MBWA market, third generation partner program (Three Generation Partnership Project, 3GPP) propose and disposed 3G Long Term Evolution (Long Term Evolution, LTE) project, emphatically the aspect of considering mainly comprises and reduces time delay, improves the user's data rate, increases power system capacity and coverage and reasonable 3G spectrum allocation may etc. flexibly, and the target of LTE mainly comprises following content:
(1), support 1.25MHz～20MHz bandwidth greatly to improve peak data rate, for example, under the 20MHz bandwidth, support the peak rate of descending 100Mbps, up 50Mbps;
(2), when keeping existing base station location, improve the cell edge bit rate, and effectively improve spectrum efficiency;
(3), the Access Network time delay is reduced to below the 10ms; The control plane time delay is reduced in the 100ms; Optimize the performance of the following low speed user of 15km/h, high performance service can be provided for the mobile subscriber of 15-120km/h, can support the user of 120-350km/h;
(4), throughput, spectrum efficiency and mobility index will be fully guaranteed in the sub-district of 5km radius, when radius of society increases to 30km, only above index be brought slight reduction;
(5), support multiple carrier bandwidths, narrow band spectrum is divided flexibility of timing etc. when satisfying configuration-system.
In actual applications, subscriber equipment (UE) usually needs to switch to better other sub-districts of signal quality from current Serving cell, to guarantee communication quality.For this reason, cell configuration in the communication system that physical location is close becomes adjacent sub-district, and UE need measure the information of adjacent sub-district, and judges how to carry out the switching of adjacent minizone according to measured information.
In existing 3G communication system, for example (Wideband Code DivisionMultiple Access WCDMA) in the system, from the angle of carrier frequency that cell signal uses, is divided into co-frequency neighbor cell and iso-frequency adjacent community with adjacent sub-district to Wideband Code Division Multiple Access (WCDMA).Wherein, co-frequency neighbor cell is defined as: the carrier frequency of adjacent sub-district and UE identical with the carrier frequency of Serving cell do not need to adjust the common channel information that receiver just can be received described target adjacent section necessity, and then described adjacent sub-district is a co-frequency neighbor cell; Iso-frequency adjacent community is defined as: the carrier frequency of adjacent sub-district and UE different with the carrier frequency of Serving cell must adjust the common channel information that receiver just can be received described target adjacent section necessity, and then described adjacent sub-district is an iso-frequency adjacent community.All UE in same sub-district, its co-frequency neighbor cell, iso-frequency adjacent community are identical; For a UE, its step to the measurement of co-frequency neighbor cell or iso-frequency adjacent community is different: for co-frequency neighbor cell, UE can not adjust the receiver frequency and can measure when carrying out business; For iso-frequency adjacent community, UE then need adjust the receiver frequency in the measurement space of appointment it is measured, and described measurement space is generally up/descending idle time slot (Up-Link/Down-Link Idle Periods) that network side provides.The co-frequency neighbor cell measurement is the measurement to co-frequency neighbor cell information; The iso-frequency adjacent community measurement is the measurement to iso-frequency adjacent community information.
The division of above co-frequency neighbor cell and iso-frequency adjacent community, be to be based upon on the whether identical basis of this sub-district and adjacent center of housing estate frequency: for the adjacent sub-district that centre frequency equates, then be co-frequency neighbor cell, otherwise, if the center carrier frequencies difference then is an iso-frequency adjacent community.But in the communication system of LTE, can not only rely on that the centre frequency of this sub-district and adjacent sub-district is whether identical determines that adjacent sub-district is co-frequency neighbor cell or iso-frequency adjacent community, can not determine thus that the measurement to adjacent sub-district is common frequency measurement or different-frequency measure.This is that the transmission bandwidth of sub-district can be following value: 1.25/2.5/5/10/20MHz because in LTE, and the bandwidth ability minimum value of UE is 10MHz, has caused having in LTE many measurement scenes to need to consider, illustrates as follows:
As shown in Figure 1, sub-district 1 and sub-district 2 are set to adjacent cell relations, and wherein the bandwidth of sub-district 1 is 20MHz, the bandwidth of sub-district 2 is 10MHz, the center carrier frequencies of sub-district 1 and sub-district 2 differs 5MHz, and the Serving cell of UE1 and UE2 is sub-district 1, and the Serving cell of UE3 is sub-district 2.Then according to the definition of prior art: sub-district 1 and sub-district 2 are iso-frequency adjacent community, and all UE in the sub-district 1 are to the different-frequency measure that is measured as of sub-district 2.But as follows from the angle analysis of LTE: the bandwidth ability of UE1, UE2 and UE3 is 10MHz the figure, and their current Serving cells are sub-district 1.For UE1, UE2, need to adjust the signal that the receiver frequency just can receive sub-district 2, therefore to the different-frequency measure that is measured as of sub-district 2.Therefore but for UE3, can adjust the signal that the receiver frequency promptly can receive sub-district 2, to the common frequency measurement that is measured as of sub-district 2;
As shown in Figure 2, sub-district 1 and sub-district 2 are set to adjacent cell relations, wherein the bandwidth of sub-district 1 is 20MHz, the bandwidth of sub-district 2 is 10MHz, sub-district 1 is identical with the center carrier frequencies of sub-district 2, then according to the definition of prior art: sub-district 1 and sub-district 2 are co-frequency neighbor cell, and all UE in the sub-district 1 are to the common frequency measurement that is measured as of sub-district 2.But as follows from the angle analysis of LTE: the bandwidth ability of UE1, UE2 and UE3 is 10MHz the figure, and their current Serving cells are sub-district 1.For UE3, can adjust the signal that the receiver frequency promptly can receive sub-district 2, therefore the measurement to sub-district 2 remains common frequency measurement; For UE1, UE2, need to adjust the signal that the receiver frequency just can receive sub-district 2, therefore to the different-frequency measure that is measured as of sub-district 2.
From above example as can be seen, existing to the definition of co-frequency neighbor cell and iso-frequency adjacent community, common frequency measurement and different-frequency measure and the needs that can not adapt to the LTE communication system on this basis to the method for measurement of cell information.At present, also not at the method for measurement of the adjacent sub-district of LTE system.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of method of measuring information of adjacent cells, can adapt to the needs of the adjacent sub-district of measurement of LTE communication system.This method comprises the steps:
A, determine measuring type of target adjacent section;
B, target adjacent section is measured according to determined measurement type.
Described definite measurement type adopts following any one method:
A1, determine measuring type of target adjacent section according to the centre frequency of the current working frequency range of bandwidth ability, the UE of user terminal UE, target adjacent section and the combination in any of band information or above information;
A2, determine measuring type of target adjacent section according to the combination in any of the centre frequency of the current working frequency range of bandwidth ability, the UE of user terminal UE, target adjacent section and band information or above information and the measurement type of network side indication;
A3, the information of adjacent cells of having stored according to the UE side are determined measuring type of target adjacent section;
A4, determine measuring type of target adjacent section according to the bandwidth ability of user terminal UE and/or the centre frequency and the band information of target adjacent section.
Method A3 comprises: UE stores the information and the corresponding measurement type of the adjacent sub-district of measured mistake; UE searches target adjacent section information in the information of adjacent cells of having stored, with the pairing measurement type of information of the target adjacent section that found as measuring type of target adjacent section.
Determine to measure type according to described method A1 or A4, then described measurement comprises according to the measurement type:
If the measurement type that B11 determines is a common frequency measurement, UE carries out common frequency measurement; Otherwise execution in step B12;
If the measurement type that B12 determines is a different-frequency measure, then UE carries out different-frequency measure according to the measurement space of network side indication.
Described step B12 comprises:
B12a, UE are to the request of network side reporting measurement;
B12b, network side indication UE carry out the measurement space of different-frequency measure; UE carries out different-frequency measure according to the measurement space of network side indication after receiving message.
Described measurement request comprises: the working frequency range that the bandwidth ability of information of adjacent cells, UE, UE are current or the combination in any of above content.
Determine to measure type according to described method A2, and the measurement type that network side issues is common frequency measurement, then described measurement type according to the sub-district is measured as:
If the measurement type that B21 determines is a common frequency measurement, then UE carries out common frequency measurement to adjacent sub-district, measures the back execution in step B22 that finishes; If the measurement type of determining is a different-frequency measure, then direct execution in step B22;
B22, judge whether do not measure adjacent sub-district in the adjacent cell list in addition, if then go to steps A; Otherwise end process flow process.
Determine to measure type according to described method A2, and the measurement type that network side issues is different-frequency measure, then described measurement type according to the sub-district is measured as:
If the measurement type that B31 determines is a different-frequency measure, then UE carries out different-frequency measure according to measuring indication to adjacent sub-district, measures the back execution in step B32 that finishes; If the measurement type of determining is a common frequency measurement, then direct execution in step B32;
B32, judge whether do not measure adjacent sub-district in the adjacent cell list in addition, if then go to steps A; Otherwise end process flow process.
Further comprise before described definite measuring type of target adjacent section:
AA1, network side issue information of adjacent cells to UE;
AA2, UE are according to the information of adjacent cells of being received, selecting an adjacent sub-district is target adjacent section.
Steps A A1 further comprises: network side is to UE sending measuring gap and/or measurement parameter.
Described message is system message or proprietary measurement control messages.
Further comprise before described definite measuring type of target adjacent section:
Network side selects the adjacent sub-district of UE as target adjacent section.
Described measurement type comprises common frequency measurement and different-frequency measure, and described common frequency measurement is that UE does not adjust the measurement that the receiver frequency is carried out, and described different-frequency measure is to need UE to adjust the measurement that the receiver frequency is carried out.
Described sub-district is the sub-district of the long-term evolution items LTE of 3G (Third Generation) Moblie technology.
The present invention also aims to, propose a kind of user terminal that is used to measure adjacent sub-district, can adapt to the needs of the adjacent sub-district of measurement of LTE communication system.Described user terminal comprises:
Measure the type determination module, be used for definite type that target adjacent section is measured;
Measurement module is used for according to the determined measurement type of measurement type determination module, and according to described measurement parameter target adjacent section is measured.
Described measurement type determination module is further used for sending the different-frequency measure request that is used to ask to measure the space to network side by transceiver module.
Described measurement module is further used for determining measurement parameter.
Described user terminal further comprises transceiver module, is used to receive the system message that is used for indication measurement or the proprietary measurement control messages that issue from network side, and the message that is received is sent to measurement type determination module.
Described measurement module further comprises parameter preservation module, is used to preserve information of adjacent cells and corresponding measurement type, when UE changes sub-district, current place, then deletes the information of adjacent cells and the corresponding measurement type of being preserved.
Described measurement module further comprises judge module, is used to judge whether to finish the measurement to all adjacent sub-districts, according to the outcome measurement module of judging target adjacent section is measured.
Measurement type in the message that described judge module is further used for judging whether receiving according to transceiver module is measured target adjacent section, if then measurement module is measured target adjacent section.
As can be seen from the above technical solutions, the present invention is common frequency measurement or different-frequency measure according to the combination in any decision of the band information of the centre frequency of the working frequency range of UE bandwidth ability, UE, the target adjacent section that will measure, target adjacent section or above information to the measurement of target adjacent section, meet the changeable actual conditions of bandwidth of cell under the LTE applied environment, thereby can realize adjacent cell measurement by using the inventive method to the LTE system.
Description of drawings
Fig. 1 is the schematic diagram of a kind of situation that adjacent center of housing estate frequency is different among the LTE;
Fig. 2 is the schematic diagram of a kind of situation that adjacent center of housing estate frequency is identical among the LTE;
Fig. 3 is a schematic diagram of measuring scene among the LTE;
Fig. 4 has comprised the flow chart of measuring type in the message that network side issues in the embodiment of the invention one, wherein, step 302a is the 1st kind a situation;
Fig. 5 has comprised the flow chart of measuring type in the message that network side issues in the embodiment of the invention one, wherein, step 302a is the 2nd kind a situation;
Fig. 6 is the flow chart of the embodiment of the invention two;
Fig. 7 is the flow chart of the embodiment of the invention three;
Fig. 8 is the flow chart of the embodiment of the invention four;
Fig. 9 is the structural representation of the user terminal of the embodiment of the invention one.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing.
According to the analysis of front, need consider the combination in any of bandwidth ability, UE working frequency range or above-mentioned information of band information, the UE of the centre frequency of adjacent sub-district, adjacent sub-district among the LTE to the division of common frequency measurement, different-frequency measure.So-called working frequency range has reflected the frequency and/or the bandwidth of UE work at present, and working frequency range can represent that for example lower frequency limit is 2120MHz with lower frequency limit and upper limiting frequency, and upper limiting frequency is 2130MHz, and then working frequency range is 2120～2130MHz; The also available centre frequency+bandwidth of working frequency range represents, for example above for the working frequency range of this example can be expressed as: centre frequency 2125MHz, bandwidth 10MHz.If network side has been indicated the measurement type, the UE measurement type that can be adopted in conjunction with indicated measurement type decided more then.
For this reason, provide the definition that is suitable for the LTE applied environment again for common frequency measurement and different-frequency measure:
Common frequency measurement: UE does not need to adjust the receiver frequency, just can receive necessary target adjacent section common channel information, and then UE is to the common frequency measurement that is measured as of described target adjacent section, and described target adjacent section is the co-frequency neighbor cell of UE; Need not to measure this feature of space during according to measurement, this metering system is known as no time slot auxiliary (non-gap assisted) again and measures.
Among the LTE, the centre carrier frequency of the centre carrier frequency of co-frequency neighbor cell and UE place Serving cell can be the same or different.If identical, see easily that obviously UE can carry out common frequency measurement to adjacent sub-district, comprise 3 kinds of situations altogether, see also (1), (2), (3); If different, also comprise 3 kinds of situations, see also (4), (5), (6):
(1) bandwidth ability of UE equals the transmission bandwidth of adjacent sub-district, and be the situation that UE1 shown in Figure 3 measures sub-district 2: sub-district 1 is identical with the carrier frequency of sub-district 2, and the bandwidth ability of UE1 is 20MHz, and the transmission bandwidth of sub-district 2 is 20MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 does not need to adjust the common channel information that receiver just can be received sub-district 5.So UE2 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 5.Sub-district 5 is the co-frequency neighbor cell of UE2;
(2) bandwidth ability of UE is less than the transmission bandwidth of adjacent sub-district, and be the situation that UE3 shown in Figure 3 measures sub-district 2: sub-district 1 is identical with the carrier frequency of sub-district 2, and the bandwidth ability of UE3 is 10MHz, and the transmission bandwidth of sub-district 2 is 20MHz.The Serving cell of UE3 is sub-district 1, and in such cases, UE3 does not need to adjust the common channel information that receiver just can be received sub-district 2.So UE3 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 2.Sub-district 2 is the co-frequency neighbor cell of UE3;
(3) bandwidth ability of UE is greater than the transmission bandwidth of adjacent sub-district, and be the situation that UE1 shown in Figure 3 measures sub-district 3: sub-district 1 is identical with the carrier frequency of sub-district 2, and the bandwidth ability of UE1 is 20MHz, and the transmission bandwidth of sub-district 3 is 10MHz.The Serving cell of UE1 is sub-district 1, and in such cases, UE1 does not need to adjust the common channel information that receiver just can be received sub-district 3.So UE1 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 3.Sub-district 3 is the co-frequency neighbor cell of UE1.
(4) bandwidth ability of UE equals the transmission bandwidth of adjacent sub-district, and be the situation that UE2 shown in Figure 3 measures sub-district 5: sub-district 1 is different with the carrier frequency of sub-district 5, and the bandwidth ability of UE2 is 10MHz, and the transmission bandwidth of sub-district 5 is 10MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 does not need to adjust the common channel information that receiver just can be received sub-district 5.So UE2 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 5.Sub-district 5 is the co-frequency neighbor cell of UE2;
(5) bandwidth ability of UE is less than the transmission bandwidth of adjacent sub-district, and be the situation that UE4 shown in Figure 3 measures sub-district 1: sub-district 1 is different with the carrier frequency of sub-district 7, and the bandwidth ability of UE4 is 10MHz, and the transmission bandwidth of sub-district 1 is 20MHz.The Serving cell of UE4 is sub-district 7, and in such cases, UE4 does not need to adjust the common channel information that receiver just can be received sub-district 1.So UE4 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 1.Sub-district 1 is the co-frequency neighbor cell of UE1;
(6) bandwidth ability of UE is greater than the transmission bandwidth of adjacent sub-district, and be the situation that UE2 shown in Figure 3 measures sub-district 6: sub-district 1 is different with the carrier frequency of sub-district 6, and the bandwidth ability of UE2 is 10MHz, and the transmission bandwidth of sub-district 6 is 5MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 does not need to adjust the common channel information that receiver just can be received sub-district 6.So UE2 measures or common frequency measurement the co-frequency neighbor cell that is measured as of sub-district 6.Sub-district 6 is the co-frequency neighbor cell of UE2.
Different-frequency measure: UE need adjust the receiver frequency, just can receive the common channel information of necessary target adjacent section, and then UE is to the different-frequency measure that is measured as of described target adjacent section, and described target adjacent section is the iso-frequency adjacent community of UE; Needs are measured this feature according to measuring the space during according to measurement, and this metering system is known as time slot auxiliary (gap assisted) again and measures.
The centre carrier frequency of the centre carrier frequency of iso-frequency adjacent community and UE place Serving cell can be the same or different, if different, sees easily that obviously UE can carry out different-frequency measure to adjacent sub-district, comprises 3 kinds of situations altogether, sees also (1), (2), (3); If identical, also comprise 3 kinds of situations, see also (4), (5), (6):
(1) bandwidth ability of UE equals the transmission bandwidth of adjacent sub-district, and be the situation that UE3 shown in Figure 3 measures sub-district 5: sub-district 1 is different with the carrier frequency of sub-district 5, and the bandwidth ability of UE3 is 10MHz, and the transmission bandwidth of sub-district 5 is 10MHz.The Serving cell of UE3 is sub-district 1, and in such cases, UE3 need adjust the common channel information that receiver just can be received sub-district 5.So UE3 measures the iso-frequency adjacent community that is measured as of sub-district 5.Sub-district 5 is the iso-frequency adjacent community of UE3;
(2) bandwidth ability of UE is less than the transmission bandwidth of adjacent sub-district, and be the situation that UE3 shown in Figure 3 measures sub-district 7: sub-district 1 is identical with the carrier frequency of sub-district 7, and the bandwidth ability of UE3 is 10MHz, and the transmission bandwidth of sub-district 7 is 20MHz.The Serving cell of UE3 is sub-district 1, and in such cases, UE3 need adjust the common channel information that receiver just can be received sub-district 7.So UE3 measures the iso-frequency adjacent community that is measured as of sub-district 7.Sub-district 7 is the iso-frequency adjacent community of UE3;
(3) bandwidth ability of UE is greater than the transmission bandwidth of adjacent sub-district, and be the situation that UE4 shown in Figure 3 measures sub-district 6: sub-district 6 is different with the carrier frequency of sub-district 7, and the bandwidth ability of UE4 is 10MHz, and the transmission bandwidth of sub-district 6 is 5MHz.The Serving cell of UE4 is sub-district 7, and in such cases, UE4 need adjust the common channel information that receiver just can be received sub-district 6.So UE4 measures the iso-frequency adjacent community that is measured as of sub-district 6.Sub-district 6 is the iso-frequency adjacent community of UE4.
(4) bandwidth ability of UE equals the transmission bandwidth of adjacent sub-district, and be the situation that UE2 shown in Figure 3 measures sub-district 3: sub-district 1 is identical with the carrier frequency of sub-district 3, and the bandwidth ability of UE2 is 10MHz, and the transmission bandwidth of sub-district 3 is 10MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 need adjust the common channel information that receiver just can be received sub-district 3.So UE2 measures the iso-frequency adjacent community that is measured as of sub-district 3.Sub-district 3 is the iso-frequency adjacent community of UE2;
(5) bandwidth ability of UE is less than the transmission bandwidth of adjacent sub-district, and be the situation that UE2 shown in Figure 3 measures sub-district 2: sub-district 1 is identical with the carrier frequency of sub-district 2, and the bandwidth ability of UE2 is 10MHz, and the transmission bandwidth of sub-district 2 is 20MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 need adjust the common channel information that receiver just can be received sub-district 2.So UE2 measures the iso-frequency adjacent community that is measured as of sub-district 2.Sub-district 2 is the iso-frequency adjacent community of UE2;
(6) bandwidth ability of UE is greater than the transmission bandwidth of adjacent sub-district, and be the situation that UE2 shown in Figure 3 measures sub-district 4: sub-district 1 is identical with the carrier frequency of sub-district 4, and the bandwidth ability of UE2 is 10MHz, and the transmission bandwidth of sub-district 4 is 5MHz.The Serving cell of UE2 is sub-district 1, and in such cases, UE2 need adjust the common channel information that receiver just can be received sub-district 4.So UE2 measures the iso-frequency adjacent community that is measured as of sub-district 4.Sub-district 4 is the iso-frequency adjacent community of UE2.
According to above analysis, with four specific embodiments the present invention program is further specified below.
Embodiment one: the flow process of present embodiment such as Fig. 4 or shown in Figure 5 comprise the steps:
Step 401: network side sending system message or proprietary measurement control messages, comprise in the message but be not limited to measure the combination in any of type, measurement parameter, information of adjacent cells or above information, also can comprise in the message and measure space information, if this information spinner is in order to tell the measurement space of carrying out different-frequency measure; Wherein, measure type and comprise common frequency measurement or different-frequency measure, measurement parameter can be Es/Io etc., and information of adjacent cells is including but not limited to the combination in any of the band information of cell ID, sub-district, the centre frequency of sub-district or above information.The band information of described sub-district has reflected the bandwidth of sub-district, can use lower frequency limit and represent that also directly dedicated bandwidth is represented.For example, the centre frequency of sub-district is 2122.5MHz, and transmission bandwidth is 5MHz, and then band information can be represented with 2120MHz or 2125MHz, or represents with 5MHz, or represents with 2120MHz and 2125MHz.Described information of adjacent cells can not distinguished adjacent sub-district, also can distinguish co-frequency neighbor cell and iso-frequency adjacent community, co-frequency neighbor cell herein refers to that the centre frequency of this sub-district is identical with the centre frequency of UE sub-district of living in, and iso-frequency adjacent community refers to that the centre frequency of this sub-district is different with the centre frequency of UE sub-district of living in.
Here, the network side information compatibility of message that network side issues and prior art, because network side is not known the bandwidth ability of UE, the division of this co-frequency neighbor cell and iso-frequency adjacent community does not have directive significance for the measurement of UE, and UE receives that still needing to distinguish adjacent sub-district after the message is co-frequency neighbor cell or iso-frequency adjacent community.In order to be distinguished with the co-frequency neighbor cell and the iso-frequency adjacent community of reality, below will the identical co-frequency neighbor cell that is divided into and iso-frequency adjacent community be called pseudo-co-frequency neighbor cell and pseudo-iso-frequency adjacent community according to the centre frequency of center of housing estate frequency and UE sub-district of living in.
Step 402: if UE is in Idle state at present, UE measures the signal of current place Serving cell, if measurement result satisfies certain conditions or criterion, then according to system message that is received or proprietary measurement control messages, starts the measurement to adjacent sub-district.
The signal quality of described certain conditions or criterion ordinary representation current service cell is not good, UE may leave current service cell or other need carry out the situation of sub-district switching/gravity treatment, for example, described specified conditions are that measurement result is less than predefined threshold value; The present invention does not limit the particular content of described specified conditions or criterion.After perhaps UE receives system message or proprietary measurement control messages, do not measure current place Serving cell signal and the direct measurement that starts adjacent sub-district, this situation normally network side indication UE is measured.
If UE is in busy attitude, then UE starts the measurement to adjacent sub-district according to system message that is received or proprietary measurement control messages.
Described startup further comprises the measurement of adjacent sub-district:
Step 402a:UE selects one as target adjacent section from the described adjacent sub-district of adjacent cell list of the system message that received or proprietary measurement control messages, UE can have following behavior:
1, checks whether preserved, if then described target adjacent section is measured according to measurement type of being preserved and measurement parameter to described measuring type of target adjacent section and measurement parameter; Otherwise go to step 402b, be situation shown in Figure 4;
2, do not check whether preserve described measuring type of target adjacent section and measurement parameter, go to step 402b, be situation shown in Figure 5;
This step specifically is divided into following several situation:
Situation 1: common frequency measurement is carried out in network side indication, and UE determines that target adjacent section can carry out common frequency measurement, and then UE carries out common frequency measurement to adjacent sub-district;
Situation 2: network side indication is carried out different-frequency measure and not have to indicate the target adjacent section frequency range of measuring, and UE determines that target adjacent section can carry out different-frequency measure, and then UE carries out different-frequency measure to adjacent sub-district;
Situation 3: the target adjacent section frequency range that different-frequency measure and indication are measured is carried out in network side indication, and UE judges whether indicated frequency range can carry out different-frequency measure, if could UE would carry out different-frequency measure to indicated target adjacent section;
Situation 4: network side indication carrying out common frequency measurement, UE judges and can not carry out common frequency measurement, if perhaps network side is indicated and is carried out different-frequency measure, UE judges and can not carry out different-frequency measure, then UE does not measure described target adjacent section, continue to measure next adjacent sub-district,, then finish to measure if there is not next adjacent sub-district.
402c, UE check the measurement of whether having finished described all the adjacent sub-districts of information of adjacent cells in receiving system message or the proprietary measurement control messages, if then finish to measure, otherwise go to step 402a;
The measurement type of described preservation and measurement parameter after UE changes Serving cell just the measurement to UE do not had directive significance, so UE can delete measurement type and the measurement parameter preserved after changing Serving cell.
In the above step of present embodiment, for the measurement type that network side issues, UE need independently judge to measure again; Network side is the indication measurement type not, is directly judged to distinguish by UE to be common frequency measurement or different-frequency measure, and is as described below:
Wherein, also can not comprise the measurement type in described system message of step 401 or the proprietary measurement control messages, and only comprise information of adjacent cells, also can comprise in the message and measure space information, if this information spinner is in order to tell the measurement space of carrying out different-frequency measure;
Then step 402b is: UE judges that according to the centre frequency of self bandwidth ability, working frequency range, target adjacent section, the band information of target adjacent section or the combination in any of above information the measurement to this sub-district is common frequency measurement or different-frequency measure.
This step specifically is divided into following several situation:
Situation 1:UE determines that target adjacent section can carry out common frequency measurement, and that is to say that UE is in the work at present frequency range just can the adjacent sub-district of measurement target, and then UE carries out common frequency measurement to described target adjacent section;
Situation 2:UE determines that target adjacent section can carry out different-frequency measure, that is to say that UE need adjust working frequency range and measure described target adjacent section, the information of the described target adjacent section of UE report network side then, and different-frequency measure is carried out in request; After network side is received message afterwards, determine the time slot that UE measures, this message is handed down to UE, UE carries out different-frequency measure at the time slot that requires to adjacent sub-district according to the indication of network side after receiving message;
Situation 3:UE determines that target adjacent section can carry out common frequency measurement and also can carry out different-frequency measure, at this moment, usually acquiescence is preferentially selected common frequency measurement, certainly do not get rid of UE yet and give network side this situation report, the UE of network side indication afterwards carries out the situation of different-frequency measure, and the processing mode of this situation is with situation 2.
Embodiment two: the bandwidth ability of the known UE of network side, and, determine concrete measurement type and indicate UE to measure according to information of adjacent cells and UE bandwidth ability by network side.
The flow process of present embodiment comprises the steps: as shown in Figure 6
Step 601: network side determines to measure type according to the combination in any of centre frequency, band information or the above information of the working frequency range of UE, UE bandwidth ability, the adjacent sub-district of UE.The adjacent sub-district of UE has a plurality of, and then network side need determine to measure type for each adjacent sub-district.Detailed process is as follows:
Select an adjacent sub-district as target adjacent section earlier, judge whether UE can carry out common frequency measurement to selected target adjacent section, if can, determine that then the measurement type of UE is a common frequency measurement; If cannot, determine that then the measurement type of UE is a different-frequency measure;
After network side is finished aforesaid operations to an adjacent sub-district in the cell list, select another the adjacent sub-district in the cell list to proceed aforesaid operations, the measurement type has been determined in all adjacent sub-districts in to cell list, and then execution in step 602.
Step 602: network side issues special measuring controlling message, includes but not limited to selected each information of adjacent cells of network side in the step 601 in the message and to the measurement type of adjacent sub-district.Because UE may preserve the information of the adjacent sub-district of having measured, therefore described special measuring controlling message not necessarily all is handed down to UE to the full content of information of adjacent cells at every turn, and the information of adjacent cells that comprises in the described special measuring controlling message is including but not limited to the centre frequency of adjacent cell ID, band information, adjacent sub-district or the combination in any of above information.
Step 603:UE measures adjacent sub-district according to the measurement type in the proprietary measurement control messages of being received.
Embodiment three: network side indication UE carries out common frequency measurement, combination in any according to centre frequency, adjacent sub-district band information or the above information of working frequency range, UE bandwidth ability and the adjacent sub-district of UE, determine to measure type, only issue the co-frequency neighbor cell information that to carry out common frequency measurement.
The flow process of present embodiment comprises the steps: as shown in Figure 7
Step 701: network side is according to known UE place adjacent cells of cells, select a target adjacent section earlier, and, judge whether UE can carry out common frequency measurement to adjacent sub-district, if can according to the current working frequency range of bandwidth ability, the UE of UE and the information of target adjacent section, add co-frequency neighbor cell information, and the next adjacent sub-district of continuation judgement, if cannot, then continue to judge next adjacent sub-district, if there has not been next adjacent sub-district, then finish to judge.
Step 702: network side issues special measuring controlling message, includes but not limited to selected each co-frequency neighbor cell information of network side in the step 701 in the message and is common frequency measurement to the measurement type of adjacent sub-district.Described information of adjacent cells is including but not limited to the information and/or the centre frequency of adjacent sub-district frequency range.
Step 703:UE carries out common frequency measurement according to the indication in the proprietary measurement control messages of being received to co-frequency neighbor cell.
Embodiment four: network side indication UE carries out different-frequency measure, simultaneously according to bandwidth ability and the information of adjacent cells of UE, determines to measure type, only issues the iso-frequency adjacent community information that can carry out different-frequency measure.
The flow process of present embodiment comprises the steps: as shown in Figure 8
Step 801: network side is according to known UE place adjacent cells of cells, select a target adjacent section earlier, and, judge whether UE can carry out different-frequency measure to adjacent sub-district according to the bandwidth ability of UE, the position of UE sub-district of living in and the information of target adjacent section, if can, add iso-frequency adjacent community information, and determine the space of measurement, and continue to judge next adjacent sub-district, if cannot, then continue to judge next adjacent sub-district,, then finish to judge if there has not been next adjacent sub-district.
Step 802: network side issues special measuring controlling message, includes but not limited to selected each iso-frequency adjacent community information of network side in the step 801 in the message, measures the space and be different-frequency measure to the measurement type of adjacent sub-district.Described information of adjacent cells is including but not limited to adjacent sub-district band information and/or centre frequency.
Step 803:UE carries out different-frequency measure according to the indication in the proprietary measurement control messages of being received to iso-frequency adjacent community.
Among the above each embodiment, network side is all wanted to issue the message that is used for indication measurement to UE earlier, and UE measures according to this message then.If UE has preserved information of adjacent cells, then can also adopt following mode to determine the measurement type of adjacent sub-district:
According to certain conditions, UE starts the measurement to adjacent sub-district voluntarily, and described certain conditions may be that the signal quality of current service cell is not good, UE may leave current service cell or other need carry out situation of sub-district switching/gravity treatment etc.;
UE chooses an adjacent sub-district wantonly as target adjacent section from the information of adjacent cells of being preserved, whether and judge can the adjacent sub-district of measurement target in the work at present frequency range, if, then to the common frequency measurement that is measured as of target adjacent section, otherwise to the different-frequency measure that is measured as of target adjacent section.
After having determined the measurement type, then can proceed to measure according to above-mentioned arbitrary embodiment.
In the actual LTE system, can select the combination in any of the described variety of way of above embodiment to realize measurement to adjacent sub-district.
Realize that to being used to the UE of the adjacent sub-district of above-mentioned measurement method describes again below.The UE of embodiment one correspondence comprises as shown in Figure 9 as lower module:
Measure type determination module 920, be used for definite type that target adjacent section is measured, concrete mode can adopt any one mode described in the embodiment one; When determining that measuring type is different-frequency measure, this module can also send the different-frequency measure request that is used to ask to measure the space by transceiver module to network side;
Can further include parameter in the described measurement module 930 and preserve module 931, be used to preserve fixed measurement type and measurement parameter, when UE changes sub-district, current place, then delete measurement type and the measurement parameter of being preserved; Also can further comprise judge module 932, being used to judge whether can be according to described measurement categorical measures target adjacent section, and judges whether to finish the measurement to all adjacent sub-districts, according to the result who judges target adjacent section is measured.
Wherein, if network side is the indication measurement type not, then measure type determination module 920 determined measurement types and necessarily can be used for the adjacent sub-district of measurement target, whether judge module 932 just need not again to judging according to described measurement categorical measures target adjacent section.
Among embodiment two, embodiment three or the embodiment four, determine to measure type and finished by network side, UE need not determine to measure type again, so the UE of embodiment two～embodiment four compares with embodiment one, can save measurement type determination module 920.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (21)
1, a kind of method of measuring adjacent sub-district is characterized in that, this method comprises the steps:
A, determine measuring type of target adjacent section;
B, target adjacent section is measured according to determined measurement type.
2, method according to claim 1 is characterized in that, described definite measurement type adopts following any one method:
A1, determine measuring type of target adjacent section according to the centre frequency of the current working frequency range of bandwidth ability, the UE of user terminal UE, target adjacent section and the combination in any of band information or above information;
A2, determine measuring type of target adjacent section according to the combination in any of the centre frequency of the current working frequency range of bandwidth ability, the UE of user terminal UE, target adjacent section and band information or above information and the measurement type of network side indication;
A3, the information of adjacent cells of having stored according to the UE side are determined measuring type of target adjacent section;
A4, determine measuring type of target adjacent section according to the bandwidth ability of user terminal UE and/or the centre frequency and the band information of target adjacent section.
3, method according to claim 2 is characterized in that, method A3 comprises: UE stores the information and the corresponding measurement type of the adjacent sub-district of measured mistake; UE searches target adjacent section information in the information of adjacent cells of having stored, with the pairing measurement type of information of the target adjacent section that found as measuring type of target adjacent section.
4, method according to claim 2 is characterized in that, determines to measure type according to described method A1 or A4, and then described measurement comprises according to the measurement type:
If the measurement type that B11 determines is a common frequency measurement, UE carries out common frequency measurement; Otherwise execution in step B12;
If the measurement type that B12 determines is a different-frequency measure, then UE carries out different-frequency measure according to the measurement space of network side indication.
5, method according to claim 4 is characterized in that, described step B12 comprises:
B12a, UE are to the request of network side reporting measurement;
B12b, network side indication UE carry out the measurement space of different-frequency measure; UE carries out different-frequency measure according to the measurement space of network side indication after receiving message.
6, method according to claim 5 is characterized in that, described measurement request comprises: the working frequency range that the bandwidth ability of information of adjacent cells, UE, UE are current or the combination in any of above content.
7, method according to claim 2 is characterized in that, determine to measure type according to described method A2, and the measurement type that network side issues is common frequency measurement, and then described measurement type according to the sub-district is measured as:
If the measurement type that B21 determines is a common frequency measurement, then UE carries out common frequency measurement to adjacent sub-district, measures the back execution in step B22 that finishes; If the measurement type of determining is a different-frequency measure, then direct execution in step B22;
B22, judge whether do not measure adjacent sub-district in the adjacent cell list in addition, if then go to steps A; Otherwise end process flow process.
8, method according to claim 2 is characterized in that, determine to measure type according to described method A2, and the measurement type that network side issues is different-frequency measure, and then described measurement type according to the sub-district is measured as:
If the measurement type that B31 determines is a different-frequency measure, then UE carries out different-frequency measure according to measuring indication to adjacent sub-district, measures the back execution in step B32 that finishes; If the measurement type of determining is a common frequency measurement, then direct execution in step B32;
B32, judge whether do not measure adjacent sub-district in the adjacent cell list in addition, if then go to steps A; Otherwise end process flow process.
9, method according to claim 1 is characterized in that, further comprises before described definite measuring type of target adjacent section:
AA1, network side issue information of adjacent cells to UE;
AA2, UE are according to the information of adjacent cells of being received, selecting an adjacent sub-district is target adjacent section.
10, method according to claim 9 is characterized in that, steps A A1 further comprises: network side is to UE sending measuring gap and/or measurement parameter.
11, method according to claim 9 is characterized in that, described message is system message or proprietary measurement control messages.
12, method according to claim 1 is characterized in that, further comprises before described definite measuring type of target adjacent section:
Network side selects the adjacent sub-district of UE as target adjacent section.
13, according to each described method of claim 1 to 8, it is characterized in that, described measurement type comprises common frequency measurement and different-frequency measure, and described common frequency measurement is that UE does not adjust the measurement that the receiver frequency is carried out, and described different-frequency measure is to need UE to adjust the measurement that the receiver frequency is carried out.
According to each described method of claim 1 to 12, it is characterized in that 14, described sub-district is the sub-district of the long-term evolution items LTE of 3G (Third Generation) Moblie technology.
15, a kind of user terminal that is used to measure adjacent sub-district is characterized in that, described user terminal comprises:
Measure the type determination module, be used for definite type that target adjacent section is measured;
Measurement module is used for according to the determined measurement type of measurement type determination module, and according to described measurement parameter target adjacent section is measured.
16, user terminal according to claim 15 is characterized in that, described measurement type determination module is further used for sending the different-frequency measure request that is used to ask to measure the space to network side by transceiver module.
17, user terminal according to claim 15 is characterized in that, described measurement module is further used for determining measurement parameter.
18, user terminal according to claim 15, it is characterized in that, described user terminal further comprises transceiver module, be used to receive the system message that is used for indication measurement or the proprietary measurement control messages that issue from network side, and the message that is received is sent to measurement type determination module.
19, user terminal according to claim 15, it is characterized in that, described measurement module further comprises parameter preservation module, be used to preserve information of adjacent cells and corresponding measurement type, when UE changes sub-district, current place, then delete the information of adjacent cells and the corresponding measurement type of being preserved.
20, according to each described user terminal of claim 15 to 19, it is characterized in that, described measurement module further comprises judge module, is used to judge whether to finish the measurement to all adjacent sub-districts, according to the outcome measurement module of judging target adjacent section is measured.
21, user terminal according to claim 20, it is characterized in that, measurement type in the message that described judge module is further used for judging whether receiving according to transceiver module is measured target adjacent section, if then measurement module is measured target adjacent section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101404262A CN101064899A (en) | 2006-04-29 | 2006-09-30 | Method for measuring adjacent cell and user terminal |
| PCT/CN2007/001435 WO2007128226A1 (en) | 2006-04-29 | 2007-04-28 | A method and ue for measuring the adjacent cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610077982.X | 2006-04-29 | ||
| CN200610077982 | 2006-04-29 | ||
| CNA2006101404262A CN101064899A (en) | 2006-04-29 | 2006-09-30 | Method for measuring adjacent cell and user terminal |
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| CN101064899A true CN101064899A (en) | 2007-10-31 |
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| CNA2006101404262A Pending CN101064899A (en) | 2006-04-29 | 2006-09-30 | Method for measuring adjacent cell and user terminal |
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| WO (1) | WO2007128226A1 (en) |
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