WO2015109559A1

WO2015109559A1 - Cell reselection method, user equipment, and network device

Info

Publication number: WO2015109559A1
Application number: PCT/CN2014/071462
Authority: WO
Inventors: 徐小英; 舒兵; 郑潇潇; 杨旭东
Original assignee: 华为技术有限公司
Priority date: 2014-01-26
Filing date: 2014-01-26
Publication date: 2015-07-30
Also published as: CN105612783B; CN105612783A

Abstract

Embodiments of the present invention provide a cell reselection method, a user equipment, and a network device. The method comprises: a UE receiving reselection information delivered by a network device, the reselection information comprising a neighboring cell list of a serving cell serving the UE, a measurement identification of at least one to-be-measured inter-frequency neighboring cell, and absolute-priority information of at least one frequency channel number; the UE performing long-cycle measurement of the at least one to-be-measured inter-frequency neighboring cell according to the measurement identification of the to-be-measured inter-frequency neighboring cell and the absolute-priority information of the at least one frequency channel number; and the UE performing cell reselection according to a result of the long-cycle measurement of the at least one to-be-measured inter-frequency neighboring cell and a specified reselection rule. In the method, no matter whether an inter-frequency neighboring cell has an absolute priority and no matter how the priority is high or low, as long as reselection information comprises a measurement identification, a UE performs inter-frequency measurement of a to-be-measured inter-frequency neighboring cell, so that it can be ensured that the UE can find the inter-frequency neighboring cell in time and reselects the inter-frequency neighboring cell.

Description

Cell reselection method, user equipment and network equipment

Technical field

The present invention relates to communication technologies, and in particular, to a cell reselection method, a user equipment, and a network device. Background technique

Wideband Code Division Multiple Access (WCDMA) systems generally use the same frequency macro cell coverage to increase the coverage of the system. The macro cell network can guarantee the coverage of the system, but it cannot guarantee the performance of user equipment (User Equipment, UE for short) in some hotspots. In the hotspot area, the number of UEs is large. Due to the limited capacity of the macro base station corresponding to the macro cell, the macro base station cannot provide good uplink and downlink transmission performance for all UEs, thus affecting the user experience.

In order to solve the above problem, the existing solution is to add a small station in the hot spot area, so that the UE in the hot spot area accesses the network through the small station to reduce the load of the macro base station. The added small station can be the same frequency as the macro base station, or can be different from the macro base station. Since co-channel interference exists between the small station and the macro station of the same frequency, the inter-frequency small station is deployed as much as possible to eliminate the interference between the same frequency. In order to enable the UE in the hotspot area to use the inter-frequency small station to access the network, first, the UE must be able to discover the inter-frequency neighboring cell corresponding to the inter-frequency small station, and then, to enable the UE to reselect the inter-frequency neighboring cell, It is clear that the UE in the non-Cell-DCH state will reselect. The UE has two modes of operation: idle mode (IDLE) and connected mode (CONNECTON). In the connected mode, the UE has four states: Cell-PCH , Cell-FACH, Cell-DCH, and URA-PCH states. The UEs in the non-cell-DCH state are UEs in the IDLE, Cell-PCH, Cell-FACH, and URA-PCH states.

How to enable the UE in the non-Cell-DCH state to discover and reselect the inter-frequency neighboring cell, which will be briefly described below. In the prior art, the absolute priority of the frequency of the cell can be separately described in two cases: The absolute priority of the inter-frequency neighboring cell is not set, or the absolute priority of the inter-frequency neighboring cell is the same priority (Equal) or low priority, that is, the absolute priority of the inter-frequency neighboring cell is the same as the resident cell or The absolute priority of the cell is lower than that of the camped cell. It should be clear that in the prior art, the absolute priority of the cell is divided according to the frequency, and the two cells with the same frequency are used. The absolute priority is the same. In this case, the network side sends a neighbor cell list to the UE, and the UE uses the conventional measurement method to measure the inter-frequency neighboring cell, but the UE performs the inter-frequency measurement, which is conditional, only when the UE currently selects the macro cell. When the quality is poor, the UE performs the inter-frequency measurement. The UE can reselect the inter-frequency neighboring cell if the signal of the macro cell is poor and the selection signal of the inter-frequency neighboring cell is better than the selection signal of the macro cell. If the macro cell signal is good, the UE will not be triggered to perform inter-frequency measurement and cell reselection. In the second case, the absolute priority of the inter-frequency neighboring cell is a high priority, that is, the absolute priority of the inter-frequency neighboring cell is higher than that of the macro cell. In this case, when the quality of the selection signal of the macro cell is higher than a certain threshold. Searching for the inter-frequency neighbor cell with T _search = 60( _S )*N as the period, N is the number of different frequency points, that is, the number of frequencies higher than the priority of the macro cell. After searching for the inter-frequency neighboring cell, the UE performs the inter-frequency measurement with the period of T _measurement = (Ncarrier-1) * T _measureFDD , where N _earrier is the cell carrier frequency (including the frequency of the macro cell), T _measureFDD = 0.64~5.12 Seconds, related to the discontinuous reception DRX cycle. When the measurement result satisfies the reselection condition, the UE reselects to the inter-frequency neighboring cell.

Through the above description, it can be seen that the prior art has the following problems: In order to offload a UE that is not in the Cdl-DCH state to an inter-frequency neighboring cell, in the first case, that is, the absolute priority is not used, or the same, low priority is used. Only when the macro cell signal is poor, the UE performs inter-frequency measurement, and the macro station's signal is not bad in the small station coverage. Therefore, the existing reselection method cannot enable the UE to find the inter-frequency in time. The neighboring cell is reselected to the inter-frequency neighboring cell, so that it cannot serve the purpose of offloading the macro cell. The embodiments of the present invention provide a cell reselection method, a user equipment, and a network device, which can ensure that the UE discovers the inter-frequency neighboring cell in time and reselects the inter-frequency neighboring cell.

A first aspect of the present invention provides a user equipment UE, including:

a receiving module, configured to receive reselection information sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, and a measurement identifier of at least one inter-frequency neighboring cell to be measured that needs to perform long-period measurement And absolute priority information of the at least one frequency point, where the neighbor cell list includes at least one inter-frequency neighboring cell;

a measuring module, configured to perform long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the frequency is The absolute priority of the same cell is the same; And a reselection module, configured to perform cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured.

In the first possible implementation manner of the first aspect of the present invention, the reselection information further includes a measurement configuration parameter, where the measurement module is specifically configured to:

Determining that the selection signal quality level of the serving cell meets a long period measurement condition; determining a first search period T1 according to the neighbor cell list and the measurement configuration parameter, and searching for the at least one to wait according to the first search period T1 Measuring an inter-frequency neighboring cell;

Determining, according to the neighboring cell list and the measurement configuration parameter, a first measurement period T2, and performing long-term measurement on the searched at least one inter-frequency neighboring cell to be measured according to the first measurement period T2.

In a second possible implementation manner of the first aspect of the present disclosure, the measurement configuration parameter includes a search factor S1, and the measurement module is specifically configured to: according to the neighboring cell, when determining the first search period T1 The list obtains the number of different frequency points N1;

The first search period T1 is calculated according to the following formula: T1=60*N1*S1, where N1 is a different frequency point, S1 is a search factor, and S1 is greater than 1.

In a third possible implementation manner of the first aspect of the present invention, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, where the measurement module specifically uses the first search period T1 to:

Obtaining a different frequency point number N1 according to the neighboring cell list;

The first search period T1 is calculated according to the following formula: T1=T _DRX *N1*S1, where T _{DRX is} a discontinuous reception period, N1 is a different frequency frequency point, and S1 is a search factor.

In a fourth possible implementation manner of the first aspect, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, where the measurement module specifically uses the first search period T1 to:

Determining a second measurement period T„ _FDD according to the discontinuous reception period T _DRX _;

The first search period T1 is calculated according to the following formula: Tl=T„ _eFDD *Sl, where T measureFDD is the second measurement period, and S1 is the search factor.

With reference to the first aspect of the present invention and the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the measurement configuration parameter includes a measurement factor S2 and a non- Continuously receiving the period T _DRX , the measuring module determining the first measurement period When T2 is used, specifically;

Determining a second measurement period T„ _FDD according to the discontinuous reception period T _DRX _:

Obtaining a cell frequency point number N _amCT according to the neighbor cell list _;

The first measurement period T2 is calculated according to the following formula: T2=(N _camer -l ) *T measureFDD ^: S2, where T measureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1

With reference to the first aspect of the present invention and the first to fourth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and a measurement Constant T. . _Nstant , the measurement module is specifically configured to: when determining the first measurement period T2:

The first measurement period T2 is calculated according to the following formula: T2 = (N _camer -1 ) *T _nstant *S2 where T. . _Nstant is the measurement constant, T. . _{Nstant is} greater than 0, ^^ is the number of cell carriers, and S2 is the measurement factor.

In a seventh possible implementation manner of the first aspect of the present disclosure, the measuring module is specifically configured to: determine that a selected signal quality level of the serving cell meets a long-period measurement condition; and acquire an inter-frequency frequency point according to the neighbor cell list N1

Calculating a second search period T3 according to the following formula: T3=60*N1, and searching for the at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is an inter-frequency frequency point; according to the neighboring cell List obtains the number of cell frequency points N _amCT;

The second measurement period T_FDD is determined according to the pre-configured discontinuous reception period T _DRX _; the third measurement period T4 is calculated according to the following formula: T4= (N _carner -1 ) *T _measureFDD where T„ _FDD is the second measurement The period, ^ ^ is the number of cell frequency points, and performs long-term measurement on the searched at least one inter-frequency cell to be measured according to the third measurement period T4.

In an eighth possible implementation manner of the first aspect of the present disclosure, the measuring module is specifically configured to: use, according to the UE protocol, or a preset measurement period of the UE, to the at least one inter-frequency cell to be measured Perform long-term measurements.

In a ninth possible implementation manner of the first aspect of the present invention, the measuring module is specifically configured to: perform long-period measurement on the at least one inter-frequency neighboring cell to be measured according to a measurement period that is sent by the network device. With reference to the first aspect of the present invention, and the first to seventh possible implementation manners of the first aspect, in a tenth possible implementation manner of the first aspect of the present disclosure, When the selected signal quality level satisfies the long period measurement condition, it is specifically used to:

Determining the moon that works to cell _{_Srxlev} ServingCell> S prioritysearchX, and _{_Squal} ServingCell> S prioritysearch2, Pui! J determine the selection signal quality level of the serving cell satisfies the long-period measurement condition, wherein,

_Sxlev SemngCell selecting signal level of the serving cell, ^ ¹ u to select the signal quality of the serving cell, ^ ™ ^ ¹ and "." Level of the selection signal w ^A2 assigned to the serving cell for the network-side threshold Value and signal quality thresholds.

With reference to the first aspect of the present invention and the first to tenth possible implementation manners of the first aspect, in the eleventh possible implementation manner of the first aspect of the present disclosure, the reselection module is specifically configured to: The long-period measurement result of the at least one inter-frequency neighboring cell to be measured, selecting a target inter-frequency neighboring cell that meets the absolute priority criterion from the at least one inter-frequency neighboring cell to be measured, and reselecting from the serving cell The target inter-frequency neighboring cell;

The absolute priority criterion includes the following five criteria: when the network device does not send the non-serving cell high signal quality threshold and the non-serving cell low signal quality threshold to the UE, the criterion 1 is used. The criterion 2 and the criterion 3, when the network device sends the non-serving cell high signal quality threshold value and the non-serving cell low signal quality threshold to the UE, using criteria 4 and criterion 5;

Criterion 1: Reselect the timer value T _reseleetl in the cell. _{In the n} , if the inter-frequency neighboring cell to be measured includes the measurement identifier, and the selection signal level of the inter-frequency neighboring cell to be measured is greater than the non-serving cell high signal level threshold, the inter-frequency neighbor to be measured is to be measured. Determining, by the cell, a target inter-frequency neighboring cell, reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 2: The timer value T _{reseleetl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute of the inter-frequency neighbor cell to be measured The priority is the same as the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor. a cell, reselected from the serving cell to the target inter-frequency neighboring cell;

Criterion 3: The timer value T _{reseleetl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the serving cell low signal level threshold, or the selection signal of the serving cell The quality value is less than or equal to 0, and the absolute priority of the inter-frequency neighboring cell to be measured is lower than the serving cell, and the selection signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell. And determining the inter-frequency neighboring cell to be measured as a target inter-frequency neighboring cell, and reselecting from the serving cell to the target inter-frequency neighboring cell;

When the device delivers the sum to the UE, the criterion 4 and the criterion 5 are applied;

Criterion 4, reselecting the timer value T _reseleetl in the cell. _{In the n} , if the to-be-measured inter-frequency neighboring cell includes the measurement identifier, and the received signal quality of the inter-frequency neighboring cell to be measured is greater than the non-serving cell high signal quality threshold, the to-be-measured The measurement inter-frequency neighboring cell is determined as a target inter-frequency neighboring cell, and is reselected from the serving cell to the target inter-frequency neighboring cell;

Criterion 5: Reselecting the timer value T _reseleetl in the cell. _n , if the received signal quality of the serving cell is smaller than the non-serving cell high signal quality threshold, or the selection signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured If the received signal quality of the to-be-measured inter-frequency neighboring cell is higher than the foregoing, the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell, and the non-serving cell is low. And determining, by the quality threshold, the inter-frequency neighboring cell to be measured as a target inter-frequency neighboring cell, and reselecting from the serving cell to the target inter-frequency neighboring cell;

The cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, The serving cell low signal level threshold and the serving cell low signal quality threshold are sent by the network device to the UE.

A second aspect of the present invention provides a network device, including:

a generating module, configured to generate reselection information of the user equipment UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, and a measurement identifier of at least one inter-frequency cell to be measured that needs to perform long period measurement, and Absolute priority information of at least one frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

a sending module, configured to send the reselection information to the UE, so that the UE is configured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point. The at least one inter-frequency cell to be measured performs long-period measurement, and performs cell reselection according to the specified reselection criterion according to the long-period measurement result of the at least one inter-frequency cell to be measured.

In a first possible implementation manner of the second aspect of the present invention, the reselection information is further included The configuration parameter is measured, so that the UE determines the first search period T1 and the first measurement period T2 according to the neighbor cell list and the measurement configuration parameter.

In a second possible implementation manner of the second aspect of the present invention, the measurement configuration parameter includes a search factor S1, so that the UE calculates the first search period T1 according to the search factor S1.

In a third possible implementation manner of the second aspect of the present invention, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, so that the UE according to the search factor S1 and the discontinuous reception The period T _DRX calculates the first search period T1.

With reference to the first to third possible implementation manners of the second aspect of the present invention, in a fourth possible implementation manner of the second aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and/or discontinuous reception a period T _DRX , such that the UE calculates the first measurement period T2 according to the measurement factor S2 and the discontinuous reception period T _DRX .

In a fifth possible implementation manner of the second aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and a measurement constant T. . _Nstant to cause the UE to measure the constant T according to the measurement factor S2. . _The first measurement period T2 is calculated by _nstant .

In a sixth possible implementation manner of the second aspect of the present invention, the reselection information further includes a measurement period, so that the UE compares the at least one to be measured according to a measurement period delivered by the network device. The frequency neighboring cell performs long period measurement.

With reference to the second aspect of the present invention and the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner of the second aspect, the network device is a base station or a radio network controller RNC.

A third aspect of the present invention provides a cell reselection method, including:

Receiving, by the user equipment, the reselection information sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least Absolute priority information of a frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The UE performs long-term measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the frequency point is the same The absolute priority of the cell is also the same;

The UE according to the long period measurement result of the at least one inter-frequency cell to be measured, according to the result The specified reselection criteria are used for cell reselection.

In a first possible implementation manner of the third aspect of the present invention, the reselection information further includes a measurement configuration parameter, and the UE is configured according to the measurement identifier of the at least one inter-frequency cell to be measured and the at least one The absolute priority information of the frequency point performs long-term measurement on the at least one inter-frequency cell to be measured, including:

Determining, by the UE, that the selection signal quality level of the serving cell meets a long period measurement condition; the UE determining a first search period T1 according to the neighbor cell list and the measurement configuration parameter, and according to the first search period T1 Searching the at least one inter-frequency neighboring cell to be measured; the UE determining a first measurement period T2 according to the neighboring cell list and the measurement configuration parameter, and searching for the at least the search according to the first measurement period T2 A different frequency neighboring cell to be measured performs long period measurement.

In a second possible implementation manner of the third aspect of the present invention, the measurement configuration parameter includes a search factor S1, and the determining, by the UE, the first search period T1 according to the neighbor cell list and the measurement configuration parameter, including:

The UE acquires the frequency index N1 according to the neighbor cell list;

The UE calculates the first search period T1 according to the following formula: T1=60*N1*S1, where N1 is a different frequency point, S1 is a search factor, and S1 is greater than 1.

In a third possible implementation manner of the third aspect of the present invention, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, and the UE determines, according to the neighbor cell list and the measurement configuration parameter. A search period T1, including:

The UE acquires the frequency index N1 according to the neighbor cell list;

The UE calculates the first search period T1 according to the following formula: T1=T _DRX *N1*S1, where T _{DRX is} a discontinuous reception period, N1 is a different frequency frequency point, and S1 is a search factor.

In a fourth possible implementation manner of the third aspect, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, where the UE determines the first according to the neighbor cell list and the measurement configuration parameter. A search period T1, including:

Determining _{, by} the UE, the second measurement period T _mi according to the discontinuous reception period T _DRX _{; asureFDD;} the UE determining, according to the following formula, that the first search period T1 is calculated according to:

Tl=T _measure FDD*Sl, where T measureFDD is the second measurement period and S1 is the search factor.

In conjunction with the third aspect of the invention and the first to fourth possible implementations of the third aspect, In a fifth possible implementation manner of the third aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and a discontinuous reception period T _DRX , and the UE determines the first measurement period T2 according to the measurement configuration parameter, including ;

The UE determines a second measurement period T _mi according to the discontinuous reception period T _DRX _{; asureFDD;} the UE acquires a cell frequency point number N _amOT according to the neighbor cell list _;

The UE calculates the first measurement period T2 according to the following formula: T2=(N _camer -1 )

TmeasureFDD S2 '†' T _me asureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1

With reference to the third aspect of the present invention and the first to fourth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and a measurement Constant T. . _Nstant , the UE determines a first measurement period T2 according to the measurement configuration parameter, including:

The UE acquires a cell frequency point number N _eamOT according to the neighbor cell list _;

The UE calculates the first measurement period T2 according to the following formula: T2=(N _camer -l ) *T _nstant *S2, where T _ranstant is a measurement constant, T _{ranstant is} greater than 0 ^ is the number of cell carriers, and S2 is at In a seventh possible implementation manner of the third aspect of the present invention, the UE, according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, to the at least one to Measuring inter-frequency neighbor cells for measurement, including:

Determining, by the UE, that a selection signal quality level of the serving cell meets a long period measurement condition;

The UE acquires the frequency index N1 according to the neighbor cell list;

The UE calculates the second search period T3 according to the following formula: T3=60*N1, and searches for the at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is the frequency of the inter-frequency frequency;

The UE acquires a cell frequency point number N _amOT according to the neighbor cell list _;

Determining, by the UE, the second measurement period according to the pre-configured discontinuous reception period T _DRX

T measureFDD

The UE calculates the third measurement period T4 according to the following formula: T4=(N _camer -1 )

TmeasureFDD ' ^ '†'' T _me asureFDD is the second measurement period, N. _a is the frequency of the cell, and according to The third measurement period T4 performs long-term measurement on the searched at least one inter-frequency cell to be measured.

In an eighth possible implementation manner of the third aspect, the UE, according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, to the at least one Long-period measurement of the inter-frequency neighboring cell to be measured, including:

The UE performs long-period measurement on the at least one inter-frequency cell to be measured according to the measurement period agreed by the protocol or the measurement period preset by itself.

In a ninth possible implementation manner of the third aspect, the UE, according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, to the at least one Long-period measurement of the inter-frequency neighboring cell to be measured, including:

The UE performs long-period measurement on the at least one inter-frequency cell to be measured according to the measurement period delivered by the network device.

With reference to the third aspect of the present invention and the first to seventh possible implementation manners of the third aspect, in a tenth possible implementation manner of the third aspect, the UE determines a selection signal of the serving cell The quality level satisfies the long period measurement conditions, including:

Determining, by the UE, ^Srxlev _{s_c} _dl ^{> s of} the serving cell, and Sq al _ServingCell > S _{pr→search2 f} , the _UE determines that the selection signal quality level of the serving cell satisfies the long period measurement condition, where a selection signal level of the serving cell, SqUal _ServingCeU is a selection signal quality of the monthly service cell, and a medical device configured to select a signal level threshold and a signal quality threshold for the serving cell .

With reference to the third aspect of the present invention, and the first to the tenth possible implementation manners of the third aspect, in the eleventh possible implementation manner of the third aspect of the present invention, the UE is to be measured according to the at least one The long-period measurement result of the inter-frequency neighboring cell performs cell reselection according to the specified reselection criteria, including:

Determining, by the UE, a target inter-frequency neighboring cell that meets an absolute priority criterion from the at least one inter-frequency neighboring cell to be measured according to the long-period measurement result of the at least one inter-frequency cell to be measured, the UE The serving cell is reselected to the target inter-frequency neighboring cell;

The absolute priority criterion includes the following five criteria: when the network device does not send the non-serving cell high signal quality threshold and the non-serving cell low signal quality threshold to the UE, the criterion 1 is used. The criterion 2 and the criterion 3, when the network device sends the non-service to the UE Usage criteria for the high signal quality threshold of the cell and the low signal quality threshold of the non-serving cell

4 and guidelines 5;

Criterion 2: The timer value T _{resel ∞ tl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute of the inter-frequency neighbor cell to be measured The priority is the same as the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor. a cell, reselected from the serving cell to the target inter-frequency neighboring cell;

Criterion 3: The timer value T _{resel ∞ tl is} reselected at the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selection signal quality value of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency cell to be measured The level is lower than the serving cell, and the selection signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell. Reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 4, reselecting the timer value T _reseleetl in the cell. _n , if the to-be-measured inter-frequency neighboring cell includes the measurement identifier, and the received signal quality of the inter-frequency neighboring cell to be measured is greater than the non-serving cell high signal quality threshold, the to-be-measured The measurement inter-frequency neighboring cell is determined as a target inter-frequency neighboring cell, and is reselected from the serving cell to the target inter-frequency neighboring cell;

Criterion 5: Reselecting the timer value T _reseleetl in the cell. _n , if the received signal quality of the serving cell is smaller than the non-serving cell high signal quality threshold, or the selection signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured The level is lower than the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor. a cell, the serving cell is reselected to the target inter-frequency neighboring cell;

The cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, The non-serving cell low signal quality threshold, the serving cell low signal level threshold, and the serving cell low signal quality threshold are sent by the network device to the UE.

A fourth aspect of the present invention provides a cell reselection method, including:

The network device generates the reselection information of the user equipment UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of the at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least one frequency point. Absolute priority information, the neighbor cell list includes at least one inter-frequency neighbor cell;

Sending, by the network device, the reselection information to the UE, to enable the UE to perform the at least the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. A hetero-frequency neighboring cell to be measured performs long-period measurement, and performs cell reselection according to the specified reselection criterion according to the long-period measurement result of the at least one inter-frequency cell to be measured.

In a first possible implementation manner of the fourth aspect of the present invention, the reselection information further includes a measurement configuration parameter, so that the UE determines the first search period according to the neighbor cell list and the measurement configuration parameter. T1 and the first measurement period T2.

In a second possible implementation manner of the fourth aspect of the present invention, the measurement configuration parameter includes a search factor S1, so that the UE calculates the first search period T1 according to the search factor S1.

In a third possible implementation manner of the fourth aspect of the present invention, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, so that the UE according to the search factor SI and the discontinuous reception The period T _DRX calculates the first search period T1.

With reference to the first to third possible implementation manners of the fourth aspect of the present invention, in a fourth possible implementation manner of the fourth aspect, the measurement configuration parameter includes a measurement factor S2 and/or discontinuous reception a period T _DRX , such that the UE calculates the first measurement period T2 according to the measurement factor S2 and the discontinuous reception period T _DRX .

In a fifth possible implementation manner of the fourth aspect of the present invention, the measurement configuration parameter includes a measurement factor S2 and a measurement constant T. . _Nstant to cause the UE to measure the constant T according to the measurement factor S2. . _The first measurement period T2 is calculated by _nstant .

In a sixth possible implementation manner of the fourth aspect of the present invention, the reselection information further includes a measurement period, so that the UE performs the at least one waiting according to the measurement period delivered by the network device. The inter-frequency neighboring cell is measured for long-period measurement. With reference to the fourth aspect of the present invention and the first to sixth possible implementation manners of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the network device is a base station or a radio network controller RNC.

The cell reselection method, the user equipment, and the network device provided by the embodiment of the present invention, the network device sends the reselection information to the UE, and the UE measures the at least one inter-frequency neighboring cell to be measured included in the reselection information sent by the network device. The identifier and the absolute priority information of the at least one frequency point are used to perform long-path inter-frequency measurement on the UE. Regardless of whether the inter-frequency neighboring cell has absolute priority or priority, the UE needs to measure if the re-selection information includes the measurement identifier. The inter-frequency neighboring cell performs the inter-frequency measurement, so that the UE can timely discover the inter-frequency neighboring cell and reselect the inter-frequency neighboring cell. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

2 is a schematic structural diagram of another user equipment according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of a cell reselection method according to an embodiment of the present invention;

FIG. 5 is a flowchart of another cell reselection method according to an embodiment of the present invention;

FIG. 6 is a flowchart of still another cell reselection method according to an embodiment of the present invention;

FIG. 7 is a flowchart of still another cell reselection method according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of still another user equipment according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another network device according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 1, the user equipment UE provided in this embodiment includes: a receiving module 11, a measuring module 12, and a reselecting module 13.

The receiving module 11 is configured to receive reselection information sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, and at least one measurement identifier of the inter-frequency cell to be measured that needs to perform long period measurement, and Absolute priority information of at least one frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The measuring module 12 is configured to perform long-period measurement on at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the cell with the same frequency point is absolutely The priority is also the same;

The reselection module 13 is configured to perform cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured.

In this embodiment, the reselection information sent by the network device includes a neighbor cell list of the serving cell of the UE, a measurement identifier of the at least one inter-frequency cell to be measured that needs to perform long-term measurement, and absolute priority information of the at least one frequency point. . The measurement identifier is used to indicate that the UE performs long-term inter-frequency measurement on the inter-frequency neighboring cell to be measured. The neighboring cell list includes multiple inter-frequency neighboring cells and different frequency-frequency points used by each neighboring cell. In the prior art, the serving cell usually has a maximum of 32 inter-frequency neighboring cells, and the serving cell usually has at most two. Different frequency points, but the present invention does not limit the number of inter-frequency neighbor cells and the number of different frequency points.

Assuming that the frequency of the current serving cell is fl, and the frequency of some inter-frequency neighboring cells is f2, there are two frequency points in the current system, and the absolute priority information of the frequency point is the absolute priority of the cell using the frequency point. If the absolute priority of the frequency point fl included in the reselection information is higher than the absolute priority of the frequency point Ω, the absolute priority of all cells using the frequency point fl is higher than the absolute priority of the cell using the frequency point f2. It is assumed that the current serving cell of the UE uses the frequency point fl. If the first neighboring cell in the inter-frequency neighboring cell of the UE also uses the frequency point fl, the absolute priority of the first neighboring cell is the same as the absolute priority of the serving cell, if the UE The second neighboring cell in the inter-frequency neighboring cell uses the frequency point n, and the absolute priority of the frequency point β is higher than the frequency point fi, then the absolute priority of the second neighboring cell is higher than the serving cell, if the absolute frequency of the frequency point f2 The priority is lower than the frequency point fl, then the absolute of the second neighboring cell The priority is lower than the serving cell. Of course, in the actual situation, the reselection information may not include the absolute priority information of the frequency point. In this case, there is no priority relationship between the cells.

In this embodiment, the measurement module 12 performs long-period measurement on the inter-frequency neighboring cell according to the measurement identifier of the inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. In this embodiment, the inter-frequency neighboring cell has The absolute priority and the priority are not included. As long as the reselection information includes the measurement identifier, the UE performs the inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring that the UE discovers the inter-frequency neighboring cell in time and reselects the inter-frequency neighboring cell. . Different from the prior art, in the prior art, when the priority of the inter-frequency neighboring cell is not set, or the priority of the inter-frequency neighboring cell is lower than or equal to the serving cell, only when the quality of the selection signal of the current serving cell is poor, the UE The inter-frequency measurement is performed. If the current serving cell signal quality is good and the inter-frequency measurement condition cannot be met, the UE does not actively perform the inter-frequency measurement, so the UE cannot reselect the inter-frequency neighbor cell. The method of the embodiment can ensure that the UE can perform inter-frequency measurement in any situation, timely discover the inter-frequency neighboring cell, and reselect the inter-frequency neighboring cell, thereby achieving the purpose of sharing the load for the macro cell currently served by the UE. At the same time, the uplink and downlink transmission performance of the UE in the hot spot area can be ensured, and the user experience is improved.

After the UE completes the long-period measurement, the UE performs cell reselection according to the long-period measurement result of the inter-frequency neighboring cell to be measured. Specifically, the UE may follow the H criterion or the R criterion specified in the 3GPP protocol or based on the loose measurement and the absolute priority. The criterion is reselected, and the UE selects a target inter-frequency neighboring cell that meets the H criterion or the R criterion from at least one inter-frequency neighboring cell to be measured, and the UE reselects from the serving cell to the target inter-frequency neighboring cell.

The following briefly describes the following H and R criteria. The H criterion applies to the HCS case and the R criterion applies to the case where there is no HCS.

The following parameters refer to the R criterion, and the specific calculation formula is as follows: Rs = Qmeas - s + Qhysts, Rn = Qmeas_n - Qoffsets - n, where Qmeas_s is the received signal quality value of the serving cell, which can be expressed as a common pilot channel The Receive Signal Code Power (RSCP) of the Common Pilot Channel (CPICH) can also be expressed as the ratio of the per-chip fraction to the power density of the CPICH (received Energy per chip divided by the power density, Referred to as Ec/No), Qmeas-n is the received signal quality value of the neighboring cell, Qhysts is the cell reselection hysteresis, and Qoffsets-n is the difference of the received signal quality values of the two cells. The criterion for cell reselection is: If Rn and Rs continuously measured can maintain Rn>Rs within the detection time, reselection is required. If Qhysts is set too large, it will cause the cell reselection to have no chance to execute when it should be executed. Qhysts is set too small and will cause ping pong reselection.

The following parameters refer to the H criterion. The specific calculation formula is as follows: Hs = Qmeas, s - Qhcs, Hn = Qmeas, n - Qhcs, n - TOn * Ln, the meaning of each parameter in the Η criterion, please refer to the relevant in 3GPP TS 25.304 Description, this is prior art and will not be described again.

In this embodiment, the UE may also adopt the following absolute priority criterion based on the loose measurement, where the absolute priority criterion includes the following five criteria, when the network device does not send the non-serving cell high to the UE. When the signal quality threshold value and the non-serving cell low signal quality threshold value are used, the network device sends the non-serving cell high signal quality threshold value to the UE and uses the criterion 1, the criterion 2, and the criterion 3. When the non-serving cell has a low signal quality threshold, the criteria 4 and 5 are used;

Criterion 3: The timer value T _{reseleetl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selection signal quality value of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency cell to be measured The level is lower than the serving cell, and the selection signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell. Reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 4, reselecting the timer value T _reseleetl in the cell. _{In the n} , if the to-be-measured inter-frequency neighboring cell includes the measurement identifier, and the received signal quality of the inter-frequency neighboring cell to be measured is greater than the non-serving cell high signal quality threshold, the to-be-measured The measurement inter-frequency neighboring cell is determined as a target inter-frequency neighboring cell, and is reselected from the serving cell to the target inter-frequency neighboring cell; Criterion 5, in the cell reselection timer value T _{resel ∞ tl} . _n , if the received signal quality of the serving cell is smaller than the non-serving cell high signal quality threshold, or the selection signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured The level is lower than the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, and is reselected from the serving cell to the target inter-frequency neighboring cell;

The cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, The serving cell low signal level threshold and the serving cell low signal quality threshold are sent by the network device to the UE. The non-serving cell high signal quality threshold and the non-serving cell low signal quality threshold network device may or may not be delivered.

The non-serving cell mentioned in the above five standards refers to the inter-frequency neighboring cell of the UE.

In the UE provided by the embodiment, the measurement module performs a long-period difference on the UE according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point included in the reselection information sent by the network device. Frequency measurement, regardless of whether the inter-frequency neighboring cell has absolute priority or priority, as long as the reselection information includes the measurement identifier, the measurement module performs inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring that the UE discovers the inter-frequency in time. The neighboring cell is reselected to the inter-frequency neighboring cell.

FIG. 2 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. As shown in FIG. 2, the user equipment UE provided in this embodiment includes: a receiving module 21, a measuring module 22, and a reselecting module 23.

The receiving module 21 is configured to receive reselection information that is sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of the at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least one The absolute priority information of the frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The measuring module 22 is configured to perform long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the cell with the same frequency point is absolutely The priority is also the same;

The reselection module 23 is configured to perform cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured. In this embodiment, the measurement module 22 can perform long-period measurement on the inter-frequency neighboring cell to be measured in the following four manners. The following four measurement modes are respectively introduced.

The first measurement mode: the reselection information may further include a measurement configuration parameter, where the measurement configuration parameter is used by the UE to determine the search period and the measurement period. The measurement module 22 is specifically configured to: firstly, determine that the selected signal quality of the serving cell meets the long period measurement condition; then, determine the first search period T1 according to the neighbor cell list and the measurement configuration parameter, and search for at least one to be performed according to the first search period T1. The first measurement period T2 is determined according to the neighbor cell list and the measurement configuration parameter, and the searched at least one inter-frequency cell to be measured is subjected to long period measurement according to the first measurement period T2.

When the determining module quality level of the serving cell meets the long-period measurement condition, the measuring module 22 is specifically configured to: determine the monthly service cell

> Spri M , and

Sq al _SemngCell > S _{prwntysearch2} , then determining that the selected signal quality level of the serving cell satisfies the long-period measurement condition, where ^eV& TM^ "is the selection signal level of the serving cell, ^Μβ TM^« is the selected signal quality of the serving cell, ^S p ^Ri - and ^s p → are the selection signal level threshold and signal quality threshold for the serving cell to be configured on the network side.

The measurement module 22 starts the search of the inter-frequency neighboring cell after determining that the selected signal quality of the serving cell meets the long-period measurement condition, and the measurement module 22 can specifically determine the first search period by using the following methods:

(1) When the measurement configuration parameter includes the search factor S1, the measurement module 22 is specifically configured to: first, obtain the different frequency frequency point number N1 according to the neighbor cell list; and then calculate the first search according to the following formula: Period Tl: T1=60*N1*S1, where N1 is the frequency of the different frequency, S1 is the search factor, and S1 is greater than 1. Since S1 is greater than 1, the first search period T1 is greater than the search period in the existing high-priority measurement mechanism, and the first search period T1 becomes larger, so that the search frequency of the UE is reduced, and the consumption of the terminal battery can be reduced.

(2) When the measurement configuration parameter includes a discontinuous reception period (DRX) T _DRX and a search factor S1, the measurement module 22 is specifically configured to: first, obtain according to the neighbor cell list when determining the first search period T1 The frequency index number N1 is calculated according to the following formula: T1 = T _DRX * N1 * S1, where T _{DRX is} a discontinuous reception period, N1 is a different frequency point, and S1 is a search factor.

(3) When the measurement configuration parameters include the discontinuous reception period T _DRX and the search factor S1, the measurement When determining the first search period T1, the module 22 is specifically configured to: firstly, determine a second measurement period T _mi according to the discontinuous reception period T _DRX _{; asureFDD;} and then, according to the following formula, determine the first search period T1 according to the calculation: T1= T measureFDD *S1, where T measureFDD is the second measurement period and SI is the search factor.

It should be noted that the search factor S1 and the discontinuous reception period T _DRX may not be included in the measurement configuration parameter, but the network side and the UE agree in advance, or the network side configures these parameters when the UE accesses the network. Give UE

The measurement module 22 determines the first measurement period T2 according to the neighbor cell list and the measurement configuration parameter, and can adopt the following two methods:

In one implementation, the measurement configuration parameters include a measurement factor S2 and a discontinuous reception period

T _D RX, the measurement module 22 is specifically used when determining the first measurement period T2; first, determining the second measurement period T _mi according to the discontinuous reception period T _DRX _{; asureFDD;} and then acquiring the cell frequency point number N according to the neighbor cell list _earnCT; Finally, calculate the first measurement period T2 according to the following formula: T2= (N _camer -l )

T measureFDD S2 '†' T _me asureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1. Since S2 is greater than 1, the first measurement period T2 is greater than the measurement period in the existing high-priority measurement mechanism, and the first measurement period T2 becomes larger, so that the measurement frequency of the UE is reduced, and the consumption of the terminal battery can be reduced.

In another implementation manner, the measurement configuration parameter includes the measurement factor S2 and the measurement constant _Tnstant measurement module 22, when determining the first measurement period T2, specifically for: first, acquiring the cell frequency point number N according to the neighbor cell list. _amCT; Then, the first measurement period T2 is calculated according to the following formula: T2 = carrier- constant *S2, where 1 constant is a measurement constant, 1 constant is greater than 0 N carrier is the number of cell carriers, and S2 is a measurement factor.

It should be noted that the measurement factor S2 and the measurement constant T. . _{The nstant} and the discontinuous reception period T _DRX may not be included in the measurement configuration parameter, but the network side and the UE pre-agreed, or the network side configures these parameters to the UE when the UE accesses the network.

The second measurement mode: the existing high-priority measurement method, the measurement module 22 is specifically configured to: First, determine that the selected signal quality of the serving cell meets the long-period measurement condition; and then, according to the neighbor cell list, obtain the different frequency frequency point N1, Calculating a second search period T3 according to the following formula: T3=60*N1, and searching for at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is an inter-frequency frequency point; finally, acquiring a cell frequency according to the neighbor cell list Points N _eamOT; according to The pre-configured discontinuous reception period T _DRX determines the second measurement period T _{mi; the asureFDD} calculates the third measurement period T4 according to the following formula: T4=(N _camer - 1 ) T _me asiireFDD, ^ '†' , T _me asureFDD J, J —− The measurement period, ^ ^ is the number of cell frequency points, and performs long-term measurement on the searched at least one inter-frequency cell to be measured according to the third measurement period T4.

It should be clarified that, although in the second measurement mode, the second search period and the third measurement period are the same as the high-priority search period and measurement period in the prior art, the present embodiment is different from the prior art. The method of the embodiment carries the measurement information and the absolute priority information of the frequency point in the reselection signal, and the UE performs the inter-frequency measurement according to the measurement indication and the absolute priority information of the frequency point, and if the serving cell receives the measurement indication The measurement is started when the signal quality meets the long-period measurement condition, and the same measurement mechanism is used for all the inter-frequency neighbor cells to be measured. Different from the prior art, only when the priority of the inter-frequency neighboring cell is higher than the service is smaller, the measurement is performed according to the method of the embodiment, and the low-frequency inter-frequency neighboring cell and the non-priority inter-frequency neighboring cell are used. The inter-frequency measurement cannot be performed according to the method in this embodiment. For the low-frequency inter-frequency neighboring cell and the non-priority inter-frequency neighboring cell, the UE performs the inter-frequency measurement only when the selection signal quality of the current serving cell is poor. If the current serving cell signal quality is good and the condition of the inter-frequency measurement cannot be met, the UE does not actively perform the inter-frequency measurement, and thus the UE cannot reselect the inter-frequency neighboring cell. The method of this embodiment can guarantee

The UE can perform the inter-frequency measurement in any case, find the inter-frequency neighboring cell in time, and re-select the inter-frequency neighboring cell to achieve the purpose of sharing the load for the macro cell currently served by the UE, and ensure that the hot spot UE is good. Uplink and downlink transmission performance to enhance the user experience.

In the third measurement mode, the measurement module 22 is specifically configured to: perform long-period measurement on at least one inter-frequency neighbor cell to be measured according to a measurement period preset by the UE protocol or preset by the UE. In this manner, the measurement period is preset by the UE itself, and then the UE completes the search and measurement of the inter-frequency neighbor cell to be measured in the measurement period.

In the fourth measurement mode, the measurement module 22 is specifically configured to: perform long-period measurement on at least one inter-frequency cell to be measured according to a measurement period sent by the network device. In this manner, the measurement period is determined by the network side, and then sent to the UE, and the UE completes the search and measurement of the inter-frequency neighboring cell to be measured in the measurement period according to the measurement period sent by the network side.

In this embodiment, the reselection module 23 is specifically configured to: select, according to a long period measurement result of the at least one inter-frequency neighbor cell to be measured, a target inter-frequency that conforms to the H criterion or the R criterion from the at least one inter-frequency cell to be measured. The neighboring cell is reselected from the serving cell to the target inter-frequency neighboring cell. In the UE provided by the embodiment, the measurement module performs a long-period difference on the UE according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point included in the reselection information sent by the network device. Frequency measurement, regardless of whether the inter-frequency neighboring cell has absolute priority or priority, as long as the reselection information includes the measurement identifier, the measurement module performs inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring that the UE discovers the inter-frequency in time. The neighboring cell is reselected to the inter-frequency neighboring cell.

FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in FIG. 3, the network device provided in this embodiment includes: a generating module 31 and a sending module 32.

The generating module 31 is configured to generate reselection information of the UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, and at least one measurement identifier of the inter-frequency cell to be measured that needs to perform long period measurement, and at least Absolute priority information of a frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The sending module 32 is configured to send the reselection information to the UE, so that the UE compares at least one different frequency to be measured according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. The cell performs long-period measurement, and performs cell reselection according to the specified reselection criterion according to the long-period measurement result of at least one inter-frequency cell to be measured.

Optionally, the reselection information further includes a measurement configuration parameter, so that the UE determines the first search period T1 and the first measurement period T2 according to the neighbor cell list and the measurement configuration parameter.

Optionally, the measuring configuration parameter includes a search factor S1 to cause the UE to calculate the first search period T1 according to the search factor S1.

Optionally, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1 to enable the UE to calculate the first search period T1 according to the search factor S1 and the discontinuous reception period T _DRX .

Optionally, the measuring configuration parameter comprises a measurement factor S2 and/or a discontinuous reception period T _DRX , so that the UE calculates the first measurement period T2 according to the measurement factor S2 and the discontinuous reception period T _DRX .

Optionally, the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _Nstant , so that the UE is based on the measurement factor S2 and the measurement constant T. . _Nstant calculates the first measurement period T2.

Optionally, the reselection information further includes a measurement period, so that the UE performs long-period measurement on the at least one inter-frequency cell to be measured according to the measurement period delivered by the network device.

In this embodiment, the network device is a base station or a radio network controller (RNC). The network device provided in this embodiment sends the reselection information to the UE, where the reselection information includes at least one measurement identifier of the inter-frequency neighboring cell to be measured and absolute priority information of the at least one frequency point, so that the UE according to the weight Selecting information for long-term inter-frequency measurement, regardless of whether the inter-frequency neighboring cell has priority or priority, as long as the re-selection information includes the measurement identifier, the UE performs inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring the UE. The inter-frequency neighboring cell is discovered in time and re-selected to the inter-frequency neighboring cell.

FIG. 4 is a flowchart of a cell reselection method according to an embodiment of the present invention. As shown in FIG. 4, the method provided in this embodiment includes the following steps:

Step 101: The UE receives the reselection information sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of the at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least one frequency. The absolute priority information of the point, the neighbor cell list includes at least one inter-frequency neighbor cell.

Assuming that the frequency of the current serving cell is fl, and the frequency of some inter-frequency neighboring cells is f2, there are two frequency points in the current system, and the absolute priority information of the frequency point is the absolute priority of the cell using the frequency point. If the absolute priority of the frequency point fl included in the reselection information is higher than the absolute priority of the frequency point Ω, the absolute priority of all cells using the frequency point fl is higher than the absolute priority of the cell using the frequency point Ω. It is assumed that the current serving cell of the UE uses the frequency point fl. If the first neighboring cell in the inter-frequency neighboring cell of the UE also uses the frequency point fl, the absolute priority of the first neighboring cell is the same as the absolute priority of the serving cell, if the UE The second neighboring cell in the inter-frequency neighboring cell uses the frequency point n, and the absolute priority of the frequency point β is higher than the frequency point fi, then the absolute priority of the second neighboring cell is higher than the serving cell, if the absolute frequency of the frequency point Ω If the priority is lower than the frequency fi, the absolute priority of the second neighboring cell is lower than that of the serving cell. Of course, in the actual situation, the reselection information may not include the absolute priority information of the frequency point. In this case, there is no priority relationship between the cells. Step 102: The UE performs long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the cell priority of the same frequency is The same is true.

In this embodiment, the UE performs long-period measurement on the inter-frequency neighboring cell according to the measurement identifier of the inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. In this embodiment, whether the inter-frequency neighboring cell has absolute or not The priority and the priority are as follows. As long as the re-selection information includes the measurement identifier, the UE performs the inter-frequency measurement on the measured inter-frequency neighboring cell, so that the UE can timely discover the inter-frequency neighboring cell and reselect the inter-frequency neighboring cell. Different from the prior art, in the prior art, when the priority of the inter-frequency neighboring cell is not set, or the absolute priority of the inter-frequency neighboring cell is lower than or equal to the serving cell, only when the quality of the selection signal of the current serving cell is poor, the UE The inter-frequency measurement is performed. If the current serving cell signal quality is good and the inter-frequency measurement condition cannot be met, the UE does not actively perform the inter-frequency measurement, so the UE cannot reselect the inter-frequency neighbor cell. The method of the embodiment can ensure that the UE can perform inter-frequency measurement in any situation, timely discover the inter-frequency neighboring cell, and reselect the inter-frequency neighboring cell, thereby achieving the purpose of sharing the load for the macro cell currently served by the UE. At the same time, the uplink and downlink transmission performance of the UE in the hot spot area can be ensured, and the user experience is improved.

Step 103: The UE performs cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency neighbor cell to be measured.

After the UE completes the long-period measurement, the UE performs cell reselection according to the long-period measurement result of the inter-frequency neighboring cell to be measured. Specifically, the UE may follow the H criterion or the R criterion specified in the 3GPP protocol or the absolute priority based on the loose measurement. The criterion is reselected, and the UE selects a target inter-frequency neighboring cell that meets the H criterion or the R criterion from at least one inter-frequency neighboring cell to be measured, and the UE reselects from the serving cell to the target inter-frequency neighboring cell.

The following parameters refer to the R criterion. The specific calculation formula is as follows: Rs = Qmeas_ s + Qhysts,

Rn = Qmeas - n - Qoffsets - n, where Qmeas_s is the received signal quality value of the serving cell, that is, the received signal power of the Primary Common Control Physical Channel (P-CCPCH) (Receive Signal Code) Power, referred to as RSCP, Qmeas—n is the received signal quality value of the neighboring cell, Qhysts is the cell reselection hysteresis, and Qoffsets—n is the difference of the received signal quality values of the two cells. The criterion for cell reselection is: If continuously measured Rn and Rs can If Rn>Rs is maintained during the detection time, reselection is required. If the parameter is set too large, it will cause the cell reselection to have no chance to execute when it should be executed. If the parameter is set too small, it will cause the ping pong to reselect.

In this embodiment, the UE may also adopt the following absolute priority criterion based on the loose measurement, where the absolute priority criterion includes the following five criteria, when the network device does not send the non-serving cell high to the UE. When the signal quality threshold value and the low non-serving cell low signal quality threshold value are used, the network device sends the non-serving cell high signal quality threshold to the UE by using the criterion 1, the criterion 2, and the criterion 3. And the low signal quality threshold of the non-serving cell, using criterion 4 and criterion 5;

Criterion 1: Reselect the timer value T _resel∞tl in the cell. _{In the n} , if the inter-frequency neighboring cell to be measured includes the measurement identifier, and the selection signal level of the inter-frequency neighboring cell to be measured is greater than the non-serving cell high signal level threshold, the inter-frequency neighbor to be measured is to be measured. Determining, by the cell, a target inter-frequency neighboring cell, reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 2: The timer value T _{reseleetl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute of the inter-frequency neighbor cell to be measured The priority is the same as the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency a neighboring cell, reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 4, reselecting the timer value T _reseleetl in the cell. _n , if the to-be-measured inter-frequency neighboring cell includes the measurement identifier, and the received signal quality of the inter-frequency neighboring cell to be measured is greater than the And determining, by the non-serving cell, a high-signal quality threshold, determining the inter-frequency neighboring cell to be measured as a target inter-frequency neighboring cell, and reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 5: Reselecting the timer value T _reseleetl in the cell. _n , if the received signal quality of the serving cell is smaller than the non-serving cell high signal quality threshold, or the selection signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured The level is lower than the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor. a cell, reselected from the serving cell to the target inter-frequency neighboring cell;

The cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, The serving cell low signal level threshold and the serving cell low signal quality threshold are sent by the network device to the UE. The non-serving cell high signal quality threshold and the non-serving cell low signal quality threshold network device may or may not be delivered. The non-serving cell mentioned in the above five standards refers to an inter-frequency neighboring cell of the UE.

In the method provided by the embodiment, the UE performs long-period inter-frequency on the UE according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point included in the reselection information sent by the network device. Measurement, regardless of whether the inter-frequency neighboring cell has a priority or a priority, as long as the re-selection information includes the measurement identifier, the UE performs the inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring that the UE discovers the inter-frequency neighboring cell in time. And reselect to the inter-frequency neighboring cell.

The technical solutions of the method embodiment shown in FIG. 4 are described in detail below by using several specific embodiments.

The UE performs long-period measurement on at least one inter-frequency cell to be measured according to the measurement identifier of the inter-frequency neighboring cell and the absolute priority information of the frequency point, and can adopt the following four methods, the first measurement mode, adopting the existing high priority The second measurement method adopts the measurement mechanism provided by the present invention; the third measurement mode, the UE performs measurement according to the measurement method defined by itself; and the fourth measurement mode, the UE performs the measurement cycle according to the network device. measuring. The following measurement methods are described separately.

FIG. 5 is a flowchart of another cell reselection method according to an embodiment of the present invention. The method provided in this embodiment is applicable to the following scenarios: The inter-frequency neighboring cell has no frequency priority and the priority of the inter-frequency neighboring cell The priority of the serving cell and the inter-frequency neighboring cell is lower than that of the serving cell and the inter-frequency neighboring cell. The priority is equal to the serving cell. As shown in FIG. 5, the method provided in this embodiment includes the following steps: Step 201: A UE receives reselection information delivered by a network device, where reselection information includes a neighbor cell list of a serving cell of the UE, and needs to perform a long period. The measured measurement identifier of the at least one inter-frequency neighbor cell to be measured, the absolute priority information of the at least one frequency point, and the measurement configuration parameter, where the neighbor cell list includes at least one inter-frequency neighbor cell.

In this embodiment, the reselection information further includes a measurement configuration parameter, where the measurement configuration parameter is used by the UE to determine a search period and a measurement period.

Step 202: The UE determines that the selected signal quality level of the serving cell meets the long period measurement condition.

The UE determines that the selected signal quality level of the serving cell meets the long-period measurement condition, specifically: the UE determines the Srxlev _ServingCell > S _{prioritysearchX of the} monthly cell, and Squal _ServingCeU > S _{prioritysearch2} , when determining that the selection signal quality level of the current serving cell satisfies the above In two conditions, the UE determines that the selected signal quality level of the serving cell satisfies the long period measurement condition, where is the selection signal level of the serving cell, "is the selected signal quality of the serving cell, ^". "^^1 and ^S are the selection signal level threshold and signal quality threshold for the serving cell to be configured on the network side.

If the UE determines that the selected signal quality of the serving cell does not satisfy the long period measurement condition, the UE stops performing long period measurement on the UE. The UE can measure the indicated frequency point and other frequency points according to a normal measurement period, and the normal measurement period is shorter than the measurement period of the long period measurement. When the quality of the selection signal of the serving cell is poor, the UE can be reselected as soon as possible. To a suitable inter-frequency neighbor cell.

Step 203: The UE determines a first search period T1 according to the neighbor cell list and the measurement configuration parameter, and searches for at least one inter-frequency neighbor cell to be measured according to the first search period T1.

After determining that the selected signal quality of the serving cell meets the long-period measurement condition, the UE starts searching for the inter-frequency neighboring cell. The first search period T1 is determined by the following three methods: When the measurement configuration parameter includes the search factor S1 The UE determines the first search period T1 according to the multiple neighbor cell list and the measurement configuration parameter, specifically: first, the UE acquires the different frequency frequency point N1 according to the neighbor cell list; then, the UE calculates the first search period T1 according to the following formula: T1= 60*N1*S1, where N1 is a different frequency point, S1 is a search factor, and S1 is greater than 1. Since S1 is greater than 1, the first search period T1 is greater than the search period in the existing high-priority measurement mechanism, and the first search period T1 becomes larger, so that the search frequency of the UE is reduced, and the consumption of the terminal battery can be reduced.

When the measurement configuration parameters include discontinuous reception (DRX) During the period T _DRX and the search factor SI, the UE determines the first search period T1 according to the neighbor cell list and the measurement configuration parameter, specifically: first, the UE acquires the different frequency point number N1 according to the neighbor cell list; then, the UE calculates the first according to the following formula. The search period T1: T1=T _DRX *N1*S1, where T _{DRX is} a discontinuous reception period, N1 is a different frequency point, and S1 is a search factor.

When the measurement configuration parameter includes the discontinuous reception period T _DRX and the search factor S1, the UE determines the first search period T1 according to the multiple neighbor cell list and the measurement configuration parameter, specifically: first, the UE determines the second measurement period T„ _FDD according to the T _DRX. _; then, UE determines a first search period Tl calculated according to the _formula: Tl = T measureFDD * Sl, wherein, T_ _FDD second measurement period, S1 is the search factor.

Step 204: The UE determines a first measurement period T2 according to the neighbor cell list and the measurement configuration parameter, and performs long-period measurement on the searched at least one inter-frequency cell to be measured according to the first measurement period T2.

After searching for the inter-frequency neighboring cell, the UE measures the inter-frequency neighboring cell to be measured according to the first measurement period T2, and the first measurement period T2 is determined by the following two methods:

When the measurement configuration parameter includes the measurement factor S2 and the discontinuous reception period T _DRX , the UE determines the first measurement period T2 according to the measurement configuration parameter, specifically: first, the UE determines the second measurement period T according to the T _DRX , where the UE according to the T _{The DRX} determines the second measurement period _TsureFDD is a prior art, and is not described in detail herein. Then, the UE acquires the cell frequency point number N _earnCT according to the multiple neighbor cell lists _; finally, the UE calculates the first measurement period T2 according to the following formula: T2 = (N _camer -1 )

*T _measure FDD*S2, where T measureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1. Since S2 is greater than 1, the first measurement period T2 is greater than the measurement period in the existing high-priority measurement mechanism, and the first measurement period T2 becomes larger, so that the measurement frequency of the UE is reduced, and the consumption of the terminal battery can be reduced.

When the measurement configuration parameter includes the measurement factor S2 and the measurement constant T, the UE determines the first measurement period T2 according to the measurement configuration parameter, specifically: first, the UE acquires the cell frequency number N _earnCT according to the neighbor cell list, and then the UE calculates the first according to the following formula. A measurement period T2: T2 = (N _{camer -} l ) * T _{e nstant} * S2, where T _e . _Nstant is the measurement constant, T _e . _{Nstant is} greater than 0 N _eamer is the number of cell carriers, S2 is the measurement factor.

Step 205: The UE performs cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured.

The UE performs cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured, specifically: the UE according to the long period measurement result of the at least one inter-frequency cell to be measured, from at least A target inter-frequency neighboring cell that meets the H criterion or the R criterion is selected in a different-frequency neighboring cell to be measured, and the UE reselects from the serving cell to the target inter-frequency neighboring cell.

In the method provided by the embodiment, the UE determines the search period of the long period measurement according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point included in the reselection information sent by the network device. The measurement period first searches for the inter-frequency neighboring cell to be measured according to the search period, and then measures the searched inter-frequency neighboring cell to be measured. The method in this embodiment does not prioritize or prioritize the inter-frequency neighboring cell. If the reselection information includes the measurement identifier, the UE performs the inter-frequency measurement on the measurement of the inter-frequency neighboring cell, thereby ensuring that the UE discovers the inter-frequency neighboring cell in time and reselects the inter-frequency neighboring cell.

FIG. 6 is a flowchart of still another cell reselection method according to an embodiment of the present invention. The method provided in this embodiment is applicable to the following scenarios: The inter-frequency neighboring cell has no frequency priority and the priority of the inter-frequency neighboring cell The priority of the serving cell and the inter-frequency neighboring cell is lower than that of the serving cell and the inter-frequency neighboring cell is equal to the serving cell. The long-term measurement method in this embodiment adopts the existing high-priority measurement mechanism, which will be specifically described below. As shown in FIG. 6, the method provided in this embodiment includes the following steps:

Step 301: The UE receives the reselection information sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, and at least one measurement identifier of the inter-frequency cell to be measured that needs to perform long period measurement, at least one frequency. The absolute priority information of the point.

Step 302: The UE determines that the selected signal quality level of the serving cell meets the long period measurement condition. The UE determines that the selected signal quality level of the serving cell meets the long period measurement condition, specifically:

The UE determines the S ^rX ^ ^{eV of the} monthly traffic cell, and when J^ determines that the selection signal quality level of the current serving cell satisfies the above two conditions, the UE determines that the service The selected signal quality level of the cell satisfies the long-period measurement condition, where is the selection signal level of the serving cell, "is the selected signal quality of the serving cell, i and ^S - the selection signal level threshold of the network side configured to the serving cell Value and signal quality threshold. When the UE determines that the selected signal quality level of the serving cell does not satisfy the long period measurement condition, the UE stops performing long period measurement on the UE.

Step 303: The UE acquires the different frequency frequency point N1 according to the neighbor cell list, and calculates a second search period T3 according to the following formula: T3=60*N1, and searches for at least one inter-frequency neighbor cell to be measured according to the second search period T3, where , N1 is the number of different frequency points.

Step 304: The UE acquires the cell frequency point N _eamCT according to the neighbor cell list, determines a second measurement period T„ _FDD according to the pre-configured discontinuous reception period T _DRX , and calculates a third measurement period T4 according to the following formula: T4= (N _Camer -1 ) *T _measureFDD , then perform long-term measurement on the searched at least one _inter -frequency cell to be measured according to the third measurement period T4.

Where τ measureFDD is the second measurement period, and N _eamOT is the number of cell frequency points.

Although the second search period and the third measurement period are the same as the high-priority search period and the measurement period in the prior art, the present embodiment is different from the prior art, and the method of the embodiment is reselected. The signal carries the measurement indication and the priority information of the frequency point, and the UE performs the inter-frequency measurement according to the measurement indication and the priority information of the frequency point, and starts to measure if the signal quality of the serving cell satisfies the long-period measurement condition after receiving the measurement indication, All inter-frequency neighbor cells to be measured are measured using the same measurement mechanism. Different from the prior art, only when the absolute priority of the inter-frequency neighboring cell is higher than the service is less than, the measurement is performed according to the method in this embodiment, for the low-priority inter-frequency neighboring cell and the non-prioritized inter-frequency neighboring cell. The inter-frequency measurement cannot be performed according to the method in this embodiment. For the low-priority inter-frequency neighboring cell and the non-priority inter-frequency neighboring cell, the UE performs the inter-frequency measurement only when the selection signal quality of the current serving cell is poor. If the current serving cell signal quality is good and the condition of the inter-frequency measurement cannot be met, the UE does not actively perform the inter-frequency measurement, and thus the UE cannot reselect the inter-frequency neighboring cell. The method of the embodiment can ensure that the UE can perform inter-frequency measurement in any situation, timely discover the inter-frequency neighboring cell, and reselect the inter-frequency neighboring cell, thereby achieving the purpose of sharing the load for the macro cell currently served by the UE. At the same time, it can ensure good uplink and downlink transmission performance of the UE in the hot spot area and improve the user experience.

Step 305: The UE selects, according to the long-period measurement result of the at least one inter-frequency cell to be measured, a target inter-frequency neighboring small cell that meets the absolute priority criterion from the at least one inter-frequency cell to be measured. In the area, the UE reselects from the serving cell to the target inter-frequency neighboring cell.

If there are multiple inter-frequency neighboring cells that meet the reselection criteria, and the priorities of the multiple inter-frequency neighboring cells are the same, the UE sorts the multiple inter-frequency neighboring cells to be measured according to the signal quality, and selects a signal quality. The best inter-frequency neighboring cell is used as the target inter-frequency neighboring cell, and then the UE reselects to the target inter-frequency neighboring cell with the best signal quality. If there are multiple inter-frequency neighboring cells that meet the reselection criteria, and the priorities of the multiple inter-frequency neighboring cells are different, the UE preferentially selects the inter-frequency neighboring cell with the higher priority, and then selects the high-priority inter-frequency neighbor from the high priority. The inter-frequency neighboring cell with the best signal quality is selected as the target inter-frequency neighboring cell in the cell, and then the UE reselects the target inter-frequency neighboring cell with the best signal quality.

In the method provided by the embodiment, the UE determines the search period of the long period measurement according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point included in the reselection information sent by the network device. The measurement period, the method in this embodiment, whether the inter-frequency neighboring cell has an absolute priority or a priority level, the UE performs the inter-frequency measurement on the measured inter-frequency neighboring cell as long as the re-selection information includes the measurement identifier, thereby ensuring the UE The inter-frequency neighboring cell is discovered in time and re-selected to the inter-frequency neighboring cell. Therefore, the load balancing of the macro cell currently served by the UE is achieved, and the uplink and downlink transmission performance of the UE in the hot spot area can be ensured, and the user experience is improved.

It should be noted that, in addition to the measurement methods provided in the foregoing Embodiment 2 and Embodiment 3, the UE performs long-period measurement on at least one inter-frequency neighbor cell to be measured according to a preset measurement period, or The measurement period delivered by the network device performs long-term measurement on at least one inter-frequency cell to be measured.

In addition, in the embodiments of the present invention, the UE is in the non-Cell-DCH state, and only the UE in the non-Cell-DCH state will reselect. The UE has two modes of operation: an idle mode (IDLE) and a connection mode ( CONNECTON), the UE has four states in connected mode: Cell-PCH, Cell-FACH, Cell-DCH and URA-PCH states. UEs in the non-cell-DCH state are UEs in the IDLE, Cell-PCH, Cell-FACH, and URA-PCH states.

FIG. 7 is a flowchart of still another cell reselection method according to an embodiment of the present invention. As shown in FIG. 7, the cell reselection method provided in this embodiment includes the following steps:

Step 401: The network device generates reselection information of the UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of the at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least one frequency point. Absolute priority information, the neighbor cell list includes at least one inter-frequency neighbor cell. Step 402: The network device sends the reselection information to the UE, so that the UE performs a long period on the at least one inter-frequency cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point. Measuring, and performing cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured.

Optionally, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1, so that the UE calculates the first search period T1 according to the search factor S1 and the discontinuous reception period T _DRX .

Optionally, the measurement configuration parameter includes a measurement factor S2 and a discontinuous reception period T _DRX , so that the UE calculates the first measurement period T2 according to the measurement factor S2 and the discontinuous reception period T _DRX .

In this embodiment, the network device is a base station or a radio network controller RNC.

The network device provided in this embodiment sends the reselection information to the UE, where the reselection information includes at least one measurement identifier of the inter-frequency neighboring cell to be measured and absolute priority information of the at least one frequency point, so that the UE according to the weight Selecting information for long-term inter-frequency measurement, regardless of whether the inter-frequency neighboring cell has priority or priority, as long as the re-selection information includes the measurement identifier, the UE performs inter-frequency measurement on the measured inter-frequency neighboring cell, thereby ensuring the UE. The inter-frequency neighboring cell is discovered in time and re-selected to the inter-frequency neighboring cell.

FIG. 8 is a schematic structural diagram of still another user equipment according to an embodiment of the present invention. As shown in FIG. 8, the user equipment 400 provided in this embodiment includes: a processor 41, a memory 42 and a receiver 43, wherein the memory 42 and Receiver 43 is coupled to processor 41 via a bus. Memory 42 is used to store instructions. When user equipment 400 is in operation, memory 42 is in communication with processor 41, such that processor 41 performs the cell reselection method provided by the present invention.

The receiver 43 is configured to receive reselection information that is sent by the network device, where the reselection information includes a neighbor cell list of the serving cell of the UE, and at least one inter-frequency neighbor cell to be measured that needs to perform long period measurement. The measurement identifier and the absolute priority information of the at least one frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The processor 41 is configured to perform long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement identifier of the at least one inter-frequency cell to be measured and the absolute priority information of the at least one frequency point, where the cell with the same frequency is preferentially The same level;

The processor 41 is further configured to: perform cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency neighbor cell to be measured.

Optionally, the reselection information further includes a measurement configuration parameter, where the processor 41 is specifically configured to: determine that the selected signal quality level of the serving cell meets the long period measurement condition; and determine the first search period T1 according to the neighbor cell list and the measurement configuration parameter, And searching for at least one inter-frequency neighboring cell to be measured according to the first search period T1; determining a first measurement period T2 according to the neighbor cell list and the measurement configuration parameter, and searching for at least one to-be-measured inter-frequency neighbor according to the first measurement period T2 The cell performs long period measurements.

Optionally, the measurement configuration parameter includes a search factor S1. When determining the first search period T1, the processor 41 is specifically configured to: obtain the different frequency frequency point number N1 according to the neighbor cell list; and calculate the first search period T1 according to the following formula: T1= 60*N1*S1, where N1 is the frequency of different frequency points, S1 is the search factor, and S1 is greater than 1

Optionally, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1. When determining the first search period T1, the processor 41 is specifically configured to: obtain the different frequency frequency point N1 according to the neighbor cell list; A search period T1 : T1 = T _DRX * N1 * S1, where T _{DRX is} a discontinuous reception period, N1 is a different frequency point, and S1 is a search factor.

Optionally, the measurement configuration parameter includes a discontinuous reception period T _DRX and a search factor S1. When determining the first search period T1, the processor 41 is specifically configured to: determine the second measurement period T _FDD according to the discontinuous reception period T _DRX _; determining a first search period T1 calculated according to the following _{equation: Tl = T measure FDD * Sl} , where, T measureFDD second measurement period, S1 is the search factor.

Optionally, the measurement configuration parameter includes a measurement factor S2 and a discontinuous reception period T _DRX . When determining the first measurement period T2, the processor 41 is specifically configured to: determine the second measurement period according to the discontinuous reception period T _DRX . Obtain the number of cell frequency points N according to the neighbor cell list. _amCT; calculate the first measurement period T2 according to the following formula: T2 = (N _carrier -1 ) *T FDD*S2, where TmeasureFDD is the second measurement period, N. _amOT For the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1. Optionally, the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _Nstant , the processor 41 calculates the first measurement period _Τ2 according to the following formula: T2 = (N _carrier -1 ) *T constant : S2, where T. . _Nstant is the measurement constant, T. . _{Nstant is} greater than 0, ^^ is the number of cell carriers, and S2 is the measurement factor.

Optionally, the processor 41 is specifically configured to: determine that the selected signal quality level of the serving cell meets the long period measurement condition; acquire the different frequency frequency point number N1 according to the neighbor cell list; and calculate the second search period T3 according to the following formula: T3=60*N1 And searching for at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is an inter-frequency frequency point; acquiring a cell frequency point number N _carrier according to the neighboring cell list; determining a second according to the pre-configured discontinuous reception period T _DRX The measurement period T„ _{FDD ; the} third measurement period T4 is calculated according to the following formula: T4=(N _camer -l )*T _measureFDD , where T _measureFDD is the second measurement period, ^ ^ is the number of cell frequency points, and according to the third measurement The period T4 performs long period measurement on the searched at least one inter-frequency cell to be measured.

Optionally, the processor 41 is specifically configured to: perform long-period measurement on the at least one inter-frequency neighbor cell to be measured according to a measurement period preset by the UE protocol or preset by the UE.

Optionally, the processor 41 measurement module is specifically configured to:

Performing a long period on the at least one inter-frequency neighboring cell to be measured according to the measurement period delivered by the network device. In this embodiment, when determining that the quality of the selection signal of the serving cell meets the long-term measurement condition, the processor 41 is specifically configured to: determine the service. "^ ¹ ^'^"〉^ of the community. ^ ', and Sq al _SemngCell > S _pmntysearch2 , then determine that the selection signal level quality of the serving cell satisfies the long-period measurement condition, where ^eV& TM^ "is the selection signal level of the serving cell," is the selection signal quality of the serving cell, ^S p ^ri — and s — ¹ are the selection signal level and signal quality that the network side configures to the serving cell.

In this embodiment, when the processor performs cell reselection according to the specified reselection criterion according to the long period measurement result of the at least one inter-frequency cell to be measured, the processor 41 is specifically configured to: according to at least one inter-frequency cell to be measured The long-period measurement result selects a target inter-frequency neighboring cell that meets the absolute priority criterion from at least one inter-frequency neighboring cell to be measured, and reselects from the serving cell to the target inter-frequency neighboring cell.

The absolute priority criterion includes the following five criteria, when the network device does not send a non-serving cell high signal quality threshold and a non-serving cell low signal quality threshold to the UE. When using the criterion 1, the criterion 2, and the criterion 3, when the network device sends the non-serving cell high signal quality threshold value and the non-serving cell low signal quality threshold value to the UE, use criteria 4 and criterion 5;

Criterion 2: The timer value T _{resel ∞ tl is} reselected in the cell. _n , if the selection signal level of the serving cell is smaller than the low signal level threshold of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute of the inter-frequency neighbor cell to be measured The priority is the same as the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency a neighboring cell, reselecting from the serving cell to the target inter-frequency neighboring cell;

Criterion 5, in the cell reselection timer value T _{resel ∞ tl} . _n , if the received signal quality of the serving cell is smaller than the non-serving cell high signal quality threshold, or the selection signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured The level is lower than the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, and the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor. a cell, reselecting from the serving cell to the target inter-frequency neighboring cell;

The cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold a value, a non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, the serving cell low signal level threshold, and a The low signal quality threshold of the serving cell is sent by the network device to the UE.

The user equipment provided in this embodiment can be used to perform the method shown in FIG. 4-6. The specific implementation manners and technical effects are similar, and details are not described herein again.

FIG. 9 is a schematic structural diagram of another network device according to an embodiment of the present invention. As shown in FIG. 9, the network device 500 provided in this embodiment includes: a processor 51, a memory 52, and a transmitter 53, wherein the memory 52 and The transmitter 53 is coupled to the processor 51 via a bus. The memory 52 stores instructions. When the network device 500 is in operation, the processor 51 communicates with the memory 52 to perform the cell reselection method provided by the present invention.

The processor 51 is configured to generate reselection information of the user equipment UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, and at least one measurement identifier of the inter-frequency cell to be measured that needs to perform long period measurement, and Absolute priority information of at least one frequency point, the neighbor cell list includes at least one inter-frequency neighboring cell;

The processor 51 controls the transmitter 53 to send reselection information to the UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of at least one inter-frequency cell to be measured that needs to perform long period measurement, and at least one frequency point. The absolute priority information, the neighboring cell list includes at least one inter-frequency neighboring cell, so that the UE according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point to the at least one inter-frequency difference to be measured The cell performs long-period measurement, and performs cell reselection according to the specified reselection criterion according to the long-period measurement result of at least one inter-frequency cell to be measured.

Optionally, the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _Nstant to make the UE root According to the measurement factor S2 and the measurement constant T. . _Nstant calculates the first measurement period T2.

The network device provided in this embodiment may be used to perform the method shown in FIG. 7. The specific implementation manners and technical effects are similar, and details are not described herein again.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, when executed, The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. A user equipment UE, characterized by: including:

A receiving module configured to receive reselection information issued by a network device. The reselection information includes a list of neighboring cells of the serving cell of the UE and a measurement identifier of at least one inter-frequency neighboring cell to be measured that requires long-period measurement. And absolute priority information of at least one frequency point, the neighbor cell list includes at least one inter-frequency neighbor cell;

A measurement module, configured to perform long-period measurement on the at least one inter-frequency neighboring cell to be measured based on the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point, where, frequency Cells with the same points have the same priority;

A reselection module, configured for the UE to perform cell reselection according to the specified reselection criteria based on the long-period measurement results of the at least one inter-frequency neighboring cell to be measured.

2. The UE according to claim 1, wherein the reselection information also includes measurement configuration parameters, and the measurement module is specifically used to:

Determine that the selected signal quality level of the serving cell satisfies the long-period measurement condition; determine a first search period T1 according to the neighbor cell list and the measurement configuration parameter, and search the at least one to-be-served cell according to the first search period T1. Measure inter-frequency neighboring cells;

A first measurement period T2 is determined according to the neighbor cell list and the measurement configuration parameter, and a long-period measurement is performed on the searched at least one inter-frequency neighboring cell to be measured according to the first measurement period T2.

3. The UE according to claim 2, wherein the measurement configuration parameters include a search factor S1, and when determining the first search period T1, the measurement module is specifically configured to: according to the neighbor cell list Get the number of inter-frequency points N1;

The first search period Tl is calculated according to the following formula: T1=60*N1*S1, where N1 is the number of inter-frequency points, S1 is the search factor, and S1 is greater than 1.

4. The UE according to claim 2, wherein the measurement configuration parameters include a discontinuous reception period T _DRX and a search factor S1, and when the measurement module determines the first search period T1, it is specifically used to: :

Obtain the number of inter-frequency points N1 according to the neighbor cell list;

The first search period Tl is calculated according to the following formula: T1= T _DRX *N1*S1, where T _DRX is the discontinuous reception period, N1 is the number of inter-frequency points, and S1 is the search factor.

5. The UE according to claim 2, wherein the measurement configuration parameters include a discontinuous reception period T _DRX and a search factor S1, and when the measurement module determines the first search period T1, it is specifically used to: :

Determine the second measurement period T mi according to the discontinuous reception period T _DRX _{; asureFDD;}

The first search period Tl is determined according to the calculation according to the following formula: Tl=T„ _eFDD *Sl, where T measureFDD is the second measurement period and S1 is the search factor.

6. The UE according to any one of claims 2 to 5, characterized in that, the measurement configuration parameters include a measurement factor S2 and a discontinuous reception period _TDRX , and the measurement module determines the first measurement period At T2, it is specifically used;

Obtain the number of cell frequency points N _{amCT according to the neighbor cell list;}

The first measurement period T2 is calculated according to the following formula: T2= (N _camer -l) *T measureFDD ^: S2, where τ measureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1

7. The method UE according to any one of claims 2 to 5, wherein the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _nstant , when the measurement module determines the first measurement period T2, it is specifically used to:

Obtain the cell frequency number _{NeamCT according to the neighbor cell list;}

The first measurement period T2 is calculated according to the following formula: T2= (N _camer -1) *T _nstant *S2 where, T. . _nstant is the measurement constant, T. . _nstant is greater than 0, ^ ^ is the number of cell carriers, and S2 is the measurement factor.

8. The UE according to claim 1, wherein the measurement module is specifically configured to: determine that the selected signal quality level of the serving cell satisfies the long-period measurement condition; obtain the number of inter-frequency points N1 according to the neighbor cell list

Calculate the second search period T3 according to the following formula: T3=60*N1, and search the at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is the number of inter-frequency points; according to the neighboring cell List to obtain the number of cell frequency points N _amCT;

The second measurement period T_FDD is determined according to the preconfigured discontinuous reception period T _DRX _; the third measurement period T4 is calculated according to the following formula: T4= (N _carner -1) *T _measureFDD where, T measureFDD is the second measurement period , ^ ^ is the number of cell frequency points, and according to the above The long-period measurement is performed on the searched at least one inter-frequency neighboring cell to be measured during the measurement period T4.

9. The UE according to claim 1, characterized in that the measurement module is specifically configured to: perform measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement period agreed in the UE protocol or preset by the UE. Long-term measurement.

10. The UE according to claim 1, wherein the measurement module is specifically configured to: perform long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement period issued by the network device.

11. The UE according to any one of claims 2 to 8, characterized in that, when determining that the selected signal quality level of the serving cell satisfies the long-period measurement condition, the measurement module is specifically used to:

It is determined that Srxlev _ServingCeU > S _{prioritysearchX} of the serving cell, and Squal _ServingCeU > S _{prioritysearch2} , and then it is determined that the selected signal quality level of the serving cell satisfies the long period measurement condition, where,

Sxlev _SemngCell is the selected signal level of the serving cell, ^1u is the selected signal quality of the serving cell, and "'."'w ^A2 is the selected signal level threshold and selection configured by the network side for the serving cell Signal quality threshold.

12. The UE according to any one of claims 1-11, characterized in that the reselection module is specifically used for:

According to the long-period measurement results of the at least one inter-frequency neighboring cell to be measured, select a target inter-frequency neighboring cell that meets the absolute priority criterion from the at least one inter-frequency neighboring cell to be measured, and reselect from the serving cell Go to the target inter-frequency neighboring cell;

Wherein, the absolute priority criteria include the following five criteria. When the network device does not deliver a non-serving cell high signal quality threshold value and a non-serving cell low signal quality threshold value to the UE, criterion 1 is used. , Criterion 2 and Criterion 3. When the network device delivers the high signal quality threshold value of the non-serving cell and the low signal quality threshold value of the non-serving cell to the UE, Criterion 4 and Criterion 5 are used;

Criterion 1: The cell reselection timer value T _reseleetl . Within _n , if the inter-frequency neighbor cell to be measured contains the measurement identifier, and the selected signal level of the inter-frequency neighbor cell to be measured is greater than the high signal level threshold of the non-serving cell, then the inter-frequency neighbor cell to be measured is The cell is determined as the target inter-frequency neighboring cell, and the serving cell is reselected to the target inter-frequency neighboring cell;

Criterion 2: The cell reselection timer value T _resel∞tl . Within _n , if the serving cell is selected The signal level is less than the low signal level threshold value of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighbor cell to be measured is the same as the serving cell, so If the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell, and the serving cell is reselected to The target inter-frequency neighboring cell;

Criterion 3: The cell reselection timer value T _reseleetl . Within _n , if the selected signal level of the serving cell is less than the low signal level threshold value of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighboring cell to be measured is level is lower than the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell , reselect from the serving cell to the target inter-frequency neighboring cell;

Criterion 4: Reselect the timer value T _reseleetl in the cell. Within _n , if the inter-frequency neighboring cell to be measured contains the measurement identifier, and the received signal quality of the inter-frequency neighboring cell to be measured is greater than the high signal quality threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is Measure the inter-frequency neighboring cell and determine it as the target inter-frequency neighboring cell, and reselect the serving cell to the target inter-frequency neighboring cell;

Criterion 5: Reselect the timer value T _reseleetl in the cell. Within _n , if the received signal quality of the serving cell is less than the high signal quality threshold of the non-serving cell, or the selected signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighboring cell to be measured is level is lower than that of the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor Cell, reselect from the serving cell to the target inter-frequency neighboring cell;

Wherein, the cell reselection timer value T _reseleetl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, The low signal level threshold of the serving cell and the low signal quality threshold of the serving cell are delivered to the UE by the network device.

13. A network device, characterized by including:

Generating module, configured to generate reselection information of the user equipment UE, where the reselection information includes a neighbor cell list of the serving cell of the UE, a measurement identifier of at least one inter-frequency neighbor cell to be measured that needs to be measured for a long period, and Absolute priority information of at least one frequency point, and the neighbor cell list includes at least one inter-frequency neighbor cell; A sending module configured to send the reselection information to the UE, so that the UE selects the reselection information based on the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. At least one inter-frequency neighboring cell to be measured performs long-period measurement, and cell reselection is performed according to specified reselection criteria based on the long-period measurement result of the at least one inter-frequency neighboring cell to be measured.

14. The network device according to claim 13, wherein the reselection information further includes measurement configuration parameters, so that the UE determines the first search period according to the neighbor cell list and the measurement configuration parameters. T1 and the first measurement period T2.

15. The network device according to claim 14, wherein the measurement configuration parameters include a search factor S1, so that the UE calculates the first search period T1 according to the search factor S1.

16. The network device according to claim 14, characterized in that, the measurement configuration parameters include a discontinuous reception period T _DRX and a search factor S1, so that the UE performs the operation according to the search factor S1 and the discontinuous reception Period _TDRX calculates the first search period Tl.

17. The network device according to any one of claims 14 to 16, characterized in that the measurement configuration parameters include measurement factor S2 and/or discontinuous reception period _TDRX , so that the UE can perform The first measurement period T2 is calculated using the factor S2 and the discontinuous reception period T _DRX .

18. The network device according to any one of claims 14 to 16, characterized in that the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _nstant , so that the UE is based on the measurement factor S2 and the measurement constant T. . _nstant calculates the first measurement period T2.

19. The network device according to claim 13, wherein the reselection information further includes a measurement period, so that the UE measures the at least one abnormality to be measured according to the measurement period issued by the network device. Frequency neighboring cells perform long-period measurements.

20. The network device according to any one of claims 13-19, characterized in that the network device is a base station or a radio network controller RNC.

21. A cell reselection method, characterized by including:

The user equipment UE receives reselection information sent by the network device. The reselection information includes a neighbor cell list of the UE's serving cell, a measurement identifier of at least one inter-frequency neighbor cell to be measured that needs to be measured for a long period, and at least Absolute priority information of a frequency point, the neighbor cell list includes at least one inter-frequency neighbor cell;

The UE performs the measurement according to the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the at least one The absolute priority information of frequency points is used to perform long-period measurement on the at least one inter-frequency neighboring cell to be measured, wherein cells with the same frequency points also have the same priority;

The UE performs cell reselection according to the specified reselection criteria based on the long-period measurement result of the at least one inter-frequency neighboring cell to be measured.

22. The method according to claim 21, wherein the reselection information further includes measurement configuration parameters, and the UE performs the measurement according to the measurement identification of the at least one inter-frequency neighboring cell to be measured and the at least one frequency. The point's priority information performs long-period measurement on the at least one inter-frequency neighboring cell to be measured, including:

The UE determines that the selected signal level quality of the serving cell meets the long-period measurement condition;

The UE determines a first search period T1 according to the neighbor cell list and the measurement configuration parameters, and searches the at least one inter-frequency neighbor cell to be measured according to the first search period T1; The cell list and the measurement configuration parameters determine a first measurement period T2, and the at least one inter-frequency neighboring cell to be measured is searched for a long-period measurement based on the first measurement period T2.

23. The method according to claim 22, wherein the measurement configuration parameters include a search factor S1, and the UE determines the first search period T1 based on the neighbor cell list and the measurement configuration parameters, including:

The UE obtains the number of inter-frequency points N1 according to the neighbor cell list;

The UE calculates the first search period Tl according to the following formula: T1=60*N1*S1, where,

N1 is the number of inter-frequency points, S1 is the search factor, and S1 is greater than 1.

24. The method according to claim 22, wherein the measurement configuration parameters include discontinuous reception period T _DRX and search factor S1, and the UE determines the first cell according to the neighbor cell list and the measurement configuration parameters. The search period T1 includes:

The UE calculates the first search period Tl according to the following formula: T1=T _DRX *N1*S1, where T _DRX is the discontinuous reception period, N1 is the number of inter-frequency points, and S1 is the search factor.

25. The method according to claim 22, wherein the measurement configuration parameters include discontinuous reception period T _DRX and search factor S1, and the UE determines the first cell according to the neighbor cell list and the measurement configuration parameters. The search period T1 includes: The UE determines the second measurement period T _mi;asureFDD according to the discontinuous reception period T _DRX ; the UE determines the first search period T1 according to the following formula:

T1=T measureFDD SI , where τ measureFDD is the second measurement period and SI is the search factor.

26. The method according to any one of claims 22 to 25, wherein the measurement configuration parameters include a measurement factor S2 and a discontinuous reception period _TDRX , and the UE determines the first measurement parameter according to the measurement configuration parameters. The measurement period T2 includes;

The UE determines the second measurement period T _mi;asureFDD according to the discontinuous reception period T _DRX ; the UE obtains the cell frequency point number NeamOT according to the neighbor cell list _;

The UE calculates the first measurement period T2 according to the following formula: T2= (N _camer -1 measureFDD ^: S2, where T measureFDD is the second measurement period, ^ ^ is the number of cell carriers, S2 is the measurement factor, and S2 is greater than 1

27. The method according to any one of claims 22 to 25, characterized in that the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _nstant , the UE determines the first measurement period T2 according to the measurement configuration parameters, including;

The UE obtains the cell frequency number N _{amOT according to the neighbor cell list;}

The UE calculates the first measurement period T2 according to the following formula: T2= (N _camer - l ) *T _nstant *S2, where T _stant is a measurement constant, T _stant is greater than 0, ^ ^ is the number of cell carriers, S2 for

28. The method according to claim 21, wherein the UE determines the at least one frequency point based on the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. Measure the inter-frequency neighboring cells to be measured, including:

The UE determines that the selected signal quality level of the serving cell meets the long-period measurement condition;

The UE calculates the second search period T3 according to the following formula: T3=60*N1, and searches the at least one inter-frequency neighboring cell to be measured according to the second search period T3, where N1 is the number of inter-frequency points;

The UE determines the second measurement period T measureFDD according to the preconfigured discontinuous reception period T _DRX ; The UE calculates the third measurement period T4 according to the following formula: T4= (N _camer -1)

TmeasureFDD ' ^ '†'' T _me asureFDD is the second measurement period, N. _a is the number of cell frequency points, and long-period measurement is performed on the at least one inter-frequency neighbor cell to be measured that is searched for according to the third measurement period T4.

29. The method according to claim 21, wherein the UE determines the at least one inter-frequency neighbor cell to be measured based on the measurement identifier of the at least one inter-frequency neighbor cell to be measured and the absolute priority information of the at least one frequency point. Measure inter-frequency neighbor cells for long-period measurements, including:

The UE performs long-period measurement on the at least one inter-frequency neighboring cell to be measured according to a preset measurement period.

30. The UE performs long-period measurement on the at least one inter-frequency neighboring cell to be measured based on the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point, including:

The UE performs long-period measurement on the at least one inter-frequency neighboring cell to be measured according to the measurement period issued by the network device.

31. The method according to any one of claims 22-28, wherein the UE determines that the selected signal quality level of the serving cell satisfies the long-period measurement condition, including: the UE determines that the selected signal quality level of the serving cell satisfies the long-period measurement condition. ^Srxlev s of service community; ^>

, and Sq al _ServmgCdl > S _pmntysearch ^ Then the _UE determines that the selected signal quality level of the serving cell satisfies the long-period measurement condition, where is the selected signal level of the serving cell, is the serving cell The selected signal quality is the selected signal level threshold and signal quality threshold configured by the network side for the serving cell.

32. The method according to any one of claims 21-31, characterized in that the UE performs cell reselection according to the specified reselection criteria based on the long-period measurement results of the at least one inter-frequency neighboring cell to be measured. Choose from:

The UE selects a target inter-frequency neighboring cell that meets the absolute priority criterion from the at least one inter-frequency neighboring cell to be measured based on the long-period measurement result of the at least one inter-frequency neighboring cell to be measured, and the UE selects a target inter-frequency neighboring cell from the at least one inter-frequency neighboring cell to be measured. The serving cell is reselected to the target inter-frequency neighboring cell;

Wherein, the absolute priority criteria include the following five criteria. When the network device does not deliver a non-serving cell high signal quality threshold value and a non-serving cell low signal quality threshold value to the UE, criterion 1 is used. , Criterion 2 and Criterion 3, when the network device delivers the non-server When the high signal quality threshold value of the serving cell and the low signal quality threshold value of the non-serving cell are determined, the use criteria

4 and Guideline 5;

Criterion 2: The cell reselection timer value T _resel∞tl . Within _n , if the selected signal level of the serving cell is less than the low signal level threshold of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute value of the inter-frequency neighboring cell to be measured is The priority is the same as the serving cell, and the selected signal level of the inter-frequency neighbor cell to be measured is greater than the low signal level threshold of the non-serving cell, then the inter-frequency neighbor cell to be measured is determined as the target inter-frequency neighbor Cell, reselect from the serving cell to the target inter-frequency neighboring cell;

Criterion 3: The cell reselection timer value T _resel∞tl . Within _n , if the selected signal level of the serving cell is less than the low signal level threshold value of the serving cell, or the selected signal quality value of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighboring cell to be measured is level is lower than the serving cell, and the selected signal level of the inter-frequency neighboring cell to be measured is greater than the low signal level threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighboring cell , reselect from the serving cell to the target inter-frequency neighboring cell;

Criterion 5: Reselect the timer value T _reseleetl in the cell. Within _n , if the received signal quality of the serving cell is less than the high signal quality threshold of the non-serving cell, or the signal level of the serving cell is less than or equal to 0, and the absolute priority of the inter-frequency neighboring cell to be measured is level is lower than that of the serving cell, and the received signal quality of the inter-frequency neighboring cell to be measured is higher than the low signal quality threshold of the non-serving cell, then the inter-frequency neighboring cell to be measured is determined as the target inter-frequency neighbor Cell, reselect from the serving cell to the target inter-frequency neighboring cell;

Wherein, the cell reselection timer value T _resel∞tl . _n , the non-serving cell high signal level threshold, the non-serving cell low signal level threshold, the non-serving cell high signal quality threshold, the non-serving cell low signal quality threshold, The low signal level threshold value of the serving cell and the The serving cell low signal quality threshold is delivered by the network device to the UE.

33. A cell reselection method, characterized by including:

The network device generates reselection information for the user equipment UE. The reselection information includes a neighbor cell list of the UE's serving cell, a measurement identifier of at least one inter-frequency neighbor cell to be measured that needs to be measured for a long period, and at least one frequency point. Absolute priority information, the neighbor cell list includes at least one inter-frequency neighbor cell;

The network device sends the reselection information to the UE, so that the UE selects the at least one frequency based on the measurement identifier of the at least one inter-frequency neighboring cell to be measured and the absolute priority information of the at least one frequency point. An inter-frequency neighboring cell to be measured performs long-period measurement, and based on the long-period measurement results of at least one inter-frequency neighboring cell to be measured, cell reselection is performed according to specified reselection criteria.

34. The method according to claim 33, wherein the reselection information further includes measurement configuration parameters, so that the UE determines the first search period T1 according to the neighbor cell list and the measurement configuration parameters. and the first measurement period T2.

35. The method according to claim 33, characterized in that the measurement configuration parameters include a search factor S1, so that the UE calculates the first search period according to the search factor S1

tl

36. The method according to claim 33, characterized in that, the measurement configuration parameters include a discontinuous reception period T _DRX and a search factor S1, so that the UE performs the operation according to the search factor S1 and the discontinuous reception period T _DRX calculates the first search period T1.

37. The method according to any one of claims 34 to 36, characterized in that the measurement configuration parameters include a measurement factor S2 and a discontinuous reception period T _DRX , so that the UE can perform the measurement according to the measurement factor S2 and The discontinuous reception period T _DRX is used to calculate the first measurement period T2.

38. The method according to any one of claims 34 to 36, wherein the measurement configuration parameters include a measurement factor S2 and a measurement constant T. . _nstant , so that the UE is based on the measurement factor S2 and the measurement constant T. . _nstant calculates the first measurement period T2.

39. The method according to claim 33, characterized in that the reselection information further includes a measurement period, so that the UE determines the at least one to-be-measured value according to the measurement period issued by the network device. Inter-frequency neighboring cells perform long-period measurements.

40. The method according to any one of claims 33 to 39, characterized in that the network device is a base station or a radio network controller RNC.