CN103634859A - Cell reselection method and device - Google Patents
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- 238000005259 measurement Methods 0.000 claims abstract description 171
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
- H04W36/008375—Determination of triggering parameters for hand-off based on historical data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Disclosed is a cell reselection method. A UE dynamically regulates an intra-frequency measurement trigger threshold in case of cell reselection, and performs the cell reselection according to the regulated intra-frequency measurement trigger threshold. Also disclosed at the same time is a cell reselection device. The solution of the present invention can allow each UE to have an intra-frequency measurement trigger threshold in line with its own circumstances and to perform intra-frequency measurement of adjacent cells more reasonably, saving the quantity of electricity of the UEs and improving the endurance capability of the UEs.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to the method and apparatus of a kind of universal mobile telecommunications system (UMTS, Universal Mobile Telecommunications System) small area gravity treatment.
Background technology
In 3G (Third Generation) Moblie and follow-up evolution system thereof, wireless access network consists of a plurality of RNSs.Each RNS comprises a radio network controller (RNC, Radio NetworkController), a plurality of Node B (NodeB) and a large amount of subscriber equipmenies (UE, User Equipment).When UE Cong Yige community moves to another community, cause cell reselection or switching.The difference of cell reselection and switching is whether UE and network have set up special-purpose control and data channel, that is: when not setting up special-purpose control and data channel, UE Cong Yige community moves to another community, causes cell reselection (Cellreselection); When foundation has special-purpose control and data channel, UE Cong Yige community moves to another community, causes and switches (Handover).
It is example that the terminal of take moves (frequently) on same frequency, and the process that UE realizes cell reselection is as follows:
Step 101: in current service cell, UE receives and storage system message (SIB from the broadcast channel of current service cell, System Information Block), the parameter such as required threshold parameter and timer and while obtaining the Neighboring Cell List of current service cell and cell reselection from SIB.
Step 102:UE periodically measures received signal quality and the intensity of current service cell pilot signal, and the common frequency measurement that disposes cell reselection in system message triggers thresholding (S
intrasearch) during parameter, UE is according to S
intrasearchjudge whether to carry out interior measurement of frequency of neighbor cell; S when Serving cell
qualvalue is greater than S
intrasearchduring threshold value, UE does not carry out the common frequency measurement of neighbor cell, the S when Serving cell
qualvalue is less than or equal to S
intrasearchduring threshold value, UE carries out common frequency measurement to neighbor cell, performs step 103;
Described S
qual=CPICH Ec/No-Q
qualmin, the pilot signal quality that CPICH Ec/No is community, Q
qualminquality minimum essential requirement rank for community;
If there is no the S of allocating cell gravity treatment in system message
intrasearchparameter, UE just carries out common frequency measurement to neighbor cell without judgement.
Step 103:UE carries out in common frequency measurement process neighbor cell, when measuring pilot signal strength and the quality of neighbor cell, be all greater than the threshold value that meets resident condition, and the grade point of described neighbor cell is during higher than Serving cell, UE is using described neighbor cell as the community that meets reselection conditions, when common frequency measurement process finishes, from all communities that meet reselection conditions, choose grade point Gao community as optimal target re-selecting cell, when described target re-selecting cell is at timer T
reselectwhile remaining most suitable in duration, UE gravity treatment is to described target re-selecting cell.
Above-mentioned is terminal frequently in the rule and method of neighbor cell measurement and gravity treatment, from cell reselection measuring process in above frequency, can find out S
intrasearchconfiguration select extremely important.If arrange too littlely, can cause UE to measure and open hysteresis, gravity treatment not in time, causes accessing success rate and reduces.If what arrange is too large, although easily trigger too early the common frequency measurement to neighbor cell, also just easily carry out the gravity treatment of co-frequency cell, can increase the weight of the measurement burden of UE, the UE electric weight of consumption is also more.In existing network, find S
intrasearchvalue unreasonable, can consume UE electric weight quickly, causes user to continue a journey experiencing declining.
In prior art standard, S
intrasearchparameter is by RNC static state setting and broadcast to UE, S
intrasearchthe value of parameter is generally rule of thumb to get a fixing value, all the same to all UE in Serving cell.In fact the concrete condition of each UE is different, such as the position in community, translational speed, electric quantity conditions etc.The S of fixed single
intrasearchparameter value is the concrete condition of adaptive each UE of having no idea.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and apparatus of cell reselection, can save UE electric weight, improves the flying power of UE.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of a kind of cell reselection provided by the invention, the method comprises:
Common frequency measurement during UE dynamic community adjusting gravity treatment triggers thresholding, triggers thresholding carry out cell reselection according to the common frequency measurement after adjusting.
In such scheme, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
The common frequency measurement of UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding.
In such scheme, the common frequency measurement of described UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding, for:
UE, before co-frequency cell gravity treatment successfully occurs, records the homogeneous-frequency adjacent-domain number of having measured and measures the time consuming; UE is successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than time that maximum homogeneous-frequency adjacent-domain number thresholding and/or described measurement consume, be greater than maximum time during thresholding, adjust common frequency measurement downwards and trigger thresholding; When described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward common frequency measurement and trigger thresholding.
In such scheme, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
The common frequency measurement of UE during according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding.
In such scheme, the common frequency measurement trigger gate of described UE during according to the gravity treatment of state of charge dynamic community adjusting is limited to:
UE, according to the dump energy of self, is divided into different state of charge, and UE selects different common frequency measurements to trigger thresholding when different state of charge carries out cell reselection.
In such scheme, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
Common frequency measurement during UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding.
In such scheme, common frequency measurement during described UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding, for:
UE is according to the dump energy of self, be divided into different state of charge, at different state of charge, select different common frequency measurements to trigger thresholding, maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding, before co-frequency cell gravity treatment successfully occurs, the time that the homogeneous-frequency adjacent-domain number that record has been measured and measurement consume, successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than maximum homogeneous-frequency adjacent-domain number thresholding, and/or time of consuming of described measurement is greater than maximum time during thresholding, adjust the common frequency measurement that current electric quantity state is corresponding downwards and trigger thresholding, when described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward the common frequency measurement that current electric quantity state is corresponding and trigger thresholding.
The device of a kind of cell reselection provided by the invention, this device comprises: dynamic adjusting module and cell reselection module, wherein,
Dynamic adjusting module, the common frequency measurement during for dynamic community adjusting gravity treatment triggers thresholding, and the common frequency measurement after adjusting is triggered to thresholding notifying cell gravity treatment module;
Cell reselection module, carries out cell reselection for triggering thresholding according to the common frequency measurement after adjusting.
In such scheme, described dynamic adjusting module, triggers thresholding specifically for the common frequency measurement according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume.
In such scheme, described dynamic adjusting module, the common frequency measurement when according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding.
In such scheme, described dynamic adjusting module, specifically for according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement, consume time dynamic community adjusting gravity treatment time common frequency measurement trigger thresholding.
The invention provides a kind of method and apparatus of cell reselection, the common frequency measurement during gravity treatment of UE dynamic community adjusting triggers thresholding, triggers thresholding carry out cell reselection according to the common frequency measurement after adjusting; So, can make each UE have to meet the common frequency measurement of s own situation to trigger thresholding, more reasonably carry out measuring in the frequency of neighbor cell, save UE electric weight, improve the flying power of UE.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that the present invention realizes cell reselection;
Fig. 2 is the structural representation that the present invention realizes the device of cell reselection;
Fig. 3 is the method flow schematic diagram that the embodiment of the present invention one realizes cell reselection;
Fig. 4 is the method flow schematic diagram that the embodiment of the present invention two realizes cell reselection;
Fig. 5 is the method flow schematic diagram that the embodiment of the present invention three realizes cell reselection.
Embodiment
Basic thought of the present invention is: the common frequency measurement during gravity treatment of UE dynamic community adjusting triggers thresholding, triggers thresholding carry out cell reselection according to the common frequency measurement after adjusting.
Below by drawings and the specific embodiments, the present invention is described in further detail.
The present invention realizes a kind of method of cell reselection, and as shown in Figure 1, the method comprises following step:
Common frequency measurement during step 201:UE dynamic community adjusting gravity treatment triggers thresholding;
This step can be: the common frequency measurement of UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding;
Concrete, UE, before co-frequency cell gravity treatment successfully occurs, records the homogeneous-frequency adjacent-domain number of having measured and measures the time consuming; UE is successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than time that maximum homogeneous-frequency adjacent-domain number thresholding and/or described measurement consume, be greater than maximum time during thresholding, adjust common frequency measurement downwards and trigger thresholding; When described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward common frequency measurement and trigger thresholding;
The statistics starting point of the time that described measurement consumes is that UE has just successfully accessed Serving cell, source, and terminal is attached most importance to and chosen a new Serving cell;
Described maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding all can predefine or configuration; Described predefine is exactly the value that provides maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding in agreement; Described configuration be exactly RNC by system message by maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and the value of minimum time thresholding configure to UE;
The amplitude of described downward adjustment and the amplitude adjusting upward also can predefine or configurations;
Further, UE, after adjusting common frequency measurement triggering thresholding, deletes the homogeneous-frequency adjacent-domain number recording before co-frequency cell gravity treatment successfully occurs, the time that measurement consumes.
This step can be also: the common frequency measurement of UE during according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding;
Concrete, UE is according to the dump energy of self, be divided into different state of charge, as: good (dump energy >=50%), (50% > dump energy >=20%), alarm (dump energy < 20%); UE selects different common frequency measurements to trigger thresholding when different state of charge carries out cell reselection; Here, the common frequency measurement of selecting when state of charge is good triggers the common frequency measurement that thresholding selects when to be greater than state of charge be general and triggers thresholding, and the common frequency measurement of selecting when state of charge is general triggers thresholding and is greater than the common frequency measurement of selecting when state of charge is alarm and triggers thresholding;
Above-mentioned state of charge interval value, can adjust as required.
This step can also be: common frequency measurement during UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding;
Concrete, UE is according to the dump energy of self, be divided into different state of charge, as: good (dump energy >=50%), (50% > dump energy >=20%), alarm (dump energy < 20%), at different state of charge, select different common frequency measurements to trigger thresholding, maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding, before co-frequency cell gravity treatment successfully occurs, the time that the homogeneous-frequency adjacent-domain number that record has been measured and measurement consume, successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than maximum homogeneous-frequency adjacent-domain number thresholding, and/or time of consuming of described measurement is greater than maximum time during thresholding, adjust the common frequency measurement that current electric quantity state is corresponding downwards and trigger thresholding, when described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward the common frequency measurement that current electric quantity state is corresponding and trigger thresholding.
Step 202:UE triggers thresholding according to the common frequency measurement after adjusting and carries out cell reselection;
UE triggers in the frequency that thresholding judges whether to carry out neighbor cell and measures according to the common frequency measurement after adjusting; S when Serving cell
qualvalue is greater than described common frequency measurement trigger gate in limited time, and UE does not carry out the common frequency measurement of neighbor cell, the S when Serving cell
qualvalue is less than or equal to described common frequency measurement trigger gate in limited time, and UE carries out common frequency measurement to neighbor cell;
Described S
qual=CPICH Ec/No-Q
qualmin, the pilot signal quality that CPICH Ec/No is community, Q
qualminquality minimum essential requirement rank for community;
UE carries out in common frequency measurement process neighbor cell, when measuring pilot signal strength and the quality of neighbor cell, be all greater than the threshold value that meets resident condition, and the grade point of described neighbor cell is during higher than Serving cell, UE is using described neighbor cell as the community that meets reselection conditions, when common frequency measurement process finishes, from all communities that meet reselection conditions, choose grade point Gao community as optimal target re-selecting cell, when described target re-selecting cell is at timer T
reselectwhile remaining most suitable in duration, UE gravity treatment is to described target re-selecting cell.
In order to realize said method, the present invention also provides a kind of device of cell reselection, and this device is arranged in UE, and as shown in Figure 2, this device comprises: dynamic adjusting module 11 and cell reselection module 12, wherein,
Cell reselection module 12, carries out cell reselection for triggering thresholding according to the common frequency measurement after adjusting;
Described dynamic adjusting module 11, triggers thresholding specifically for the common frequency measurement according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume;
Concrete, described dynamic adjusting module 11, before co-frequency cell gravity treatment successfully occurs, records the homogeneous-frequency adjacent-domain number of having measured and measures the time consuming; Successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than time that maximum homogeneous-frequency adjacent-domain number thresholding and/or described measurement consume, be greater than maximum time during thresholding, adjust common frequency measurement downwards and trigger thresholding; When described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward common frequency measurement and trigger thresholding;
Or, described dynamic adjusting module 11, the common frequency measurement when according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding;
Concrete, described dynamic adjusting module 11 is according to the dump energy of self place UE, be divided into different state of charge, as: good (dump energy >=50%), (50% > dump energy >=20%), alarm (dump energy < 20%); When carrying out cell reselection, different state of charge notify different common frequency measurements to trigger thresholding to cell reselection module 12;
Or, described dynamic adjusting module 11, specifically for according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement, consume time dynamic community adjusting gravity treatment time common frequency measurement trigger thresholding;
Concrete, described dynamic adjusting module 11 is according to the dump energy of self place UE, be divided into different state of charge, as: good (dump energy >=50%), (50% > dump energy >=20%), alarm (dump energy < 20%), at different state of charge, select different common frequency measurements to trigger thresholding, maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding, before co-frequency cell gravity treatment successfully occurs, the time that the homogeneous-frequency adjacent-domain number that record has been measured and measurement consume, successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than the maximum homogeneous-frequency adjacent-domain number thresholding that current electric quantity state is corresponding, and/or time of consuming of described measurement is greater than maximum time that current electric quantity state is corresponding during thresholding, adjust the common frequency measurement that current electric quantity state is corresponding downwards and trigger thresholding, when described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding that current electric quantity state is corresponding and described measurement consume while being less than minimum time thresholding corresponding to current electric quantity state, adjust upward the common frequency measurement that current electric quantity state is corresponding and trigger thresholding.
Below in conjunction with specific embodiment, describe implementation procedure and the principle of method of the present invention in detail.
Embodiment 1
In the present embodiment, the common frequency measurement of UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment and while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding, realizes the method for cell reselection as shown in Figure 3, comprises following step:
Step 301, UE accepts SIB message from broadcast channel, and required parameter while obtaining the Neighboring Cell List of Serving cell and cell reselection from SIB, comprising: common frequency measurement triggers thresholding S
intrasearch, maximum homogeneous-frequency adjacent-domain number thresholding N
intrasearchl, maximum time thresholding T
intrasearchl, minimum homogeneous-frequency adjacent-domain number thresholding N
intrasearch2, minimum time thresholding T
intrasearch2with timer duration T
reselectdeng;
Step 302, UE periodically measures received signal quality and the intensity of current service cell pilot signal;
Step 303, the S of UE judgement Serving cell
qualwhether value is greater than S
intrasearchthreshold value, when being greater than, UE does not carry out the common frequency measurement of neighbor cell, and flow process finishes; When being not more than, perform step 304;
Described S
qual=CPICH Ec/No-Q
qualmin, the pilot signal quality that CPICH Ec/No is community, Q
qualminquality minimum essential requirement rank for community;
Step 304, UE carries out measuring in frequency to the homogeneous-frequency adjacent-domain in Neighboring Cell List;
Step 305, the time that the homogeneous-frequency adjacent-domain number that UE record is measured and measurement consume;
Step 306, UE carries out cell reselection;
Concrete, UE carries out in measuring process homogeneous-frequency adjacent-domain, when measuring pilot signal strength and the quality of neighbor cell, be all greater than the threshold value that meets resident condition, and the grade point of described neighbor cell is during higher than Serving cell, UE is using described neighbor cell as the community that meets reselection conditions, when common frequency measurement process finishes, from all communities that meet reselection conditions, choose grade point Gao community as optimal target re-selecting cell, when described target re-selecting cell is at timer T
reselectwhile remaining most suitable in duration, UE gravity treatment is to described target re-selecting cell;
Step 307, UE is successfully carrying out after the gravity treatment of co-frequency cell, judges that described homogeneous-frequency adjacent-domain number is no to be greater than maximum homogeneous-frequency adjacent-domain number thresholding N
intrasearchl, when being greater than, perform step 308; Otherwise perform step 309;
Step 308, UE adjusts S automatically downwards
intrasearchfor S
intrasearch(new), perform step 313;
Concrete, S
intrasearch(new)=S
intrasearch-delta, delta is predefined amplitude;
This step is because UE has excessively done the measurement of unnecessary homogeneous frequency adjacent area, so will reduce common frequency measurement, triggers thresholding, thereby makes gravity treatment become difficult, reduces unnecessary homogeneous-frequency adjacent-domain and measures.
Step 309, UE judges whether the time that described measurement consumes is greater than maximum time thresholding T
intrasearchl, when being greater than, perform step 310, otherwise perform step 311;
Step 310, UE adjusts S automatically downwards
intrasearchfor S
intrasearch(new), perform step 313;
Concrete, S
intrasearch(new)=S
intrasearch-delta, delta is predefined amplitude;
This step is because UE has excessively done the measurement of unnecessary homogeneous frequency adjacent area, so will reduce common frequency measurement, triggers thresholding, thereby makes gravity treatment become difficult, reduces unnecessary homogeneous-frequency adjacent-domain and measures.
Step 311, UE judges whether that described homogeneous-frequency adjacent-domain number is less than minimum homogeneous-frequency adjacent-domain number thresholding N
intrasearch2, and time of consuming of described measurement be less than minimum time thresholding T
intrasearch2, in described homogeneous-frequency adjacent-domain number, be less than minimum homogeneous-frequency adjacent-domain number thresholding N
intrasearch2, and time of consuming of described measurement be less than minimum time thresholding T
intrasearch2time, perform step 312, otherwise perform step 313;
Step 312, UE adjusts upward S automatically
intrasearchfor S
intrasearch(new), perform step 313;
Concrete, S
intrasearch(new)=S
intrasearch+ delta, delta is predefined amplitude;
This step is because gravity treatment not too easily occurs UE, triggers thresholding, thereby make gravity treatment become easier so will improve common frequency measurement, avoids the access success rate causing not in time because of gravity treatment to reduce.
Step 313, after gravity treatment completes, the time that the homogeneous-frequency adjacent-domain number that UE records while removing co-frequency cell gravity treatment and measurement consume.
Embodiment 2
In the present embodiment, common frequency measurement when UE carrys out dynamic community adjusting gravity treatment according to dump energy state triggers thresholding, realizes the method for cell reselection as shown in Figure 4, comprises following step:
Step 401, UE accepts SIB message from broadcast channel, and required parameter while obtaining the Neighboring Cell List of this Serving cell and cell reselection from SIB, comprising: normal common frequency measurement triggers thresholding S
intrasearch, economize on electricity common frequency measurement triggers thresholding S
intrasearch (batterysaving)with timer duration T
reselectetc. parameter, described S
intrasearch (battery saving)compare S
intrasearchvalue little;
Step 402, UE is according to the dump energy information of battery, be divided into different state of charge, comprise: good (dump energy >=50%), general (50% > dump energy >=20%), alarm (dump energy < 20%);
Step 403, when state of charge is while being good, UE selected common frequency measurement trigger gate when cell reselection is limited to S
intrasearch;
Step 404, when state of charge is while being general, UE selected common frequency measurement trigger gate when cell reselection is limited to S
intrasearchand S
intrasearch (batterysaving)mean value;
Step 405, when state of charge is alarm, UE selected common frequency measurement trigger gate when cell reselection is limited to S
intrasearch (battery saving);
In the present embodiment, due to S
intrasearch (batterysaving)compare S
intrasearchlittle, at common frequency measurement trigger gate, be limited to S
intrasearch (batterysaving)time, trigger UE the measurement number of times of homogeneous-frequency adjacent-domain is just reduced, more save the electric weight of UE.
Step 406, UE carries out normal cell reselection process.
Embodiment 3
Common frequency measurement during in the present embodiment, UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding, realizes the method for cell reselection as shown in Figure 5, comprises following step:
Step 501, UE accepts SIB message from broadcast channel, and required parameter while obtaining the Neighboring Cell List of this Serving cell and cell reselection from SIB, comprising: the different common frequency measurements that different state of charge are corresponding trigger thresholdings, maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding, minimum time thresholding and timer duration T
reselect;
Step 502, UE is according to the dump energy information of battery, be divided into different state of charge, comprise: good (dump energy >=50%), general (50% > dump energy >=20%), alarm (dump energy < 20%);
In this step, when state of charge is while being good, the value of each parameter that UE adopts when cell reselection is as shown in table 1;
| Parameter name | Value |
| Common frequency measurement triggers thresholding S intrasearch(used) | S intrasearch |
| Maximum homogeneous-frequency adjacent-domain number thresholding N intrasearch1(used) | N intrasearch1 |
| Maximum time thresholding T intrasearchl(used) | T intrasearch1 |
| Minimum homogeneous-frequency adjacent-domain number thresholding N intrasearch2(used) | N intrasearch2 |
| Minimum time thresholding T intrasearch2(used) | T intrasearch2 |
Table 1
When state of charge is while being general, the value of each parameter that UE adopts when cell reselection is as shown in table 2;
| Parameter name | Value |
| Common frequency measurement triggers thresholding S intrasearch(used) | (S intrasearch+S intrasearch(battery saving))/2 |
| Maximum homogeneous-frequency adjacent-domain number thresholding N intrasearch1(used) | (N intrasearch1+N intrasearch1(battery saving))/2 |
| Maximum time thresholding T intrasearch1(used) | (T intrasearch1+T intrasearch1(battery saving))/2 |
| Minimum homogeneous-frequency adjacent-domain number thresholding N intrasearch2(used) | (N intrasearch2+N intrasearch2(battery saving))/2 |
| Minimum time thresholding T intrasearch2(used) | (T intrasearch2+T intrasearch2(battery saving))/2 |
Table 2
When state of charge is alarm, the value of each parameter that UE adopts when cell reselection is as shown in table 3;
| Parameter name | Value |
| Common frequency measurement triggers thresholding S intrasearch(used) | S intrasearch(battery saving) |
| Maximum homogeneous-frequency adjacent-domain number thresholding N intrasearch1(used) | N intrasearch1(battery saving) |
| Maximum time thresholding T intrasearch1(used) | T intrasearch1(battery saving) |
| Minimum homogeneous-frequency adjacent-domain number thresholding N intrasearch2(used) | N intrasearch2(battery saving) |
| Minimum time thresholding T intrasearch2(used) | T intrasearch2(battery saving) |
Table 3
Step 503, UE carries out cell reselection, the time that the homogeneous-frequency adjacent-domain number that record is measured and measurement consume;
Step 504, when UE meets reselection conditions in adjacent area, chooses described adjacent area;
Step 505, UE is successfully carrying out after the gravity treatment of co-frequency cell, judges that described homogeneous-frequency adjacent-domain number is no to be greater than the maximum homogeneous-frequency adjacent-domain number thresholding N that current electric quantity state is corresponding
intrasearch1 (used), when being greater than, perform step 506; Otherwise perform step 507;
Step 506, UE adjusts S corresponding to current electric quantity state automatically downwards
intrasearch (used)for S
intrasearch(new), perform step 511;
Concrete, S
intrasearch(new)=S
intrasearch (used)-delta, delta is predefined amplitude.
Step 507, UE judges whether the time that described measurement consumes is greater than the T that current electric quantity state is corresponding
intrasearch1 (used), when being greater than, perform step 508, otherwise perform step 509;
Step 508, UE adjusts S automatically downwards
intrasearch (used)for S
intrasearch(new), perform step 511;
Concrete, S
intrasearch(new)=S
intrasearch (used)-delta, delta is predefined amplitude.
Step 509, UE judges whether that described homogeneous-frequency adjacent-domain number is less than the N that current electric quantity state is corresponding
intrasearch2 (used), and time of consuming of described measurement be less than T
intrasearch2 (used), in described homogeneous-frequency adjacent-domain, number is less than the N that current electric quantity state is corresponding
intrasearch2, and time of consuming of described measurement be less than T
intrasearch2time, perform step 510, otherwise perform step 511;
Step 510, UE adjusts upward S automatically
intrasearch (used)for S
intrasearch(new), perform step 511;
Concrete, S
intrasearch(new)=S
intrasearch (used)+ delta, delta is predefined amplitude.
Step 511, after gravity treatment completes, the time that the homogeneous-frequency adjacent-domain number that UE records while removing co-frequency cell gravity treatment and measurement consume.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (11)
1. a method for cell reselection, is characterized in that, the method comprises:
Common frequency measurement during subscriber equipment (UE) dynamic community adjusting gravity treatment triggers thresholding, triggers thresholding carry out cell reselection according to the common frequency measurement after adjusting.
2. method according to claim 1, is characterized in that, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
The common frequency measurement of UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding.
3. method according to claim 2, is characterized in that, the common frequency measurement of described UE according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume triggers thresholding, for:
UE, before co-frequency cell gravity treatment successfully occurs, records the homogeneous-frequency adjacent-domain number of having measured and measures the time consuming; UE is successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than time that maximum homogeneous-frequency adjacent-domain number thresholding and/or described measurement consume, be greater than maximum time during thresholding, adjust common frequency measurement downwards and trigger thresholding; When described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward common frequency measurement and trigger thresholding.
4. method according to claim 1, is characterized in that, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
The common frequency measurement of UE during according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding.
5. method according to claim 4, is characterized in that, the common frequency measurement trigger gate of described UE during according to the gravity treatment of state of charge dynamic community adjusting is limited to:
UE, according to the dump energy of self, is divided into different state of charge, and UE selects different common frequency measurements to trigger thresholding when different state of charge carries out cell reselection.
6. method according to claim 1, is characterized in that, the common frequency measurement trigger gate during gravity treatment of described UE dynamic community adjusting is limited to:
Common frequency measurement during UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding.
7. method according to claim 6, is characterized in that, common frequency measurement during described UE consumes according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement time dynamic community adjusting gravity treatment triggers thresholding, for:
UE is according to the dump energy of self, be divided into different state of charge, at different state of charge, select different common frequency measurements to trigger thresholding, maximum homogeneous-frequency adjacent-domain number thresholding, maximum time thresholding, minimum homogeneous-frequency adjacent-domain number thresholding and minimum time thresholding, before co-frequency cell gravity treatment successfully occurs, the time that the homogeneous-frequency adjacent-domain number that record has been measured and measurement consume, successfully carrying out after the gravity treatment of co-frequency cell, judge whether the time that described homogeneous-frequency adjacent-domain number and/or described measurement consume surpasses corresponding thresholding, when described homogeneous-frequency adjacent-domain number is greater than maximum homogeneous-frequency adjacent-domain number thresholding, and/or time of consuming of described measurement is greater than maximum time during thresholding, adjust the common frequency measurement that current electric quantity state is corresponding downwards and trigger thresholding, when described homogeneous-frequency adjacent-domain number is less than time that minimum homogeneous-frequency adjacent-domain number thresholding and described measurement consume while being less than minimum time thresholding, adjust upward the common frequency measurement that current electric quantity state is corresponding and trigger thresholding.
8. a device for cell reselection, is characterized in that, this device comprises: dynamic adjusting module and cell reselection module, wherein,
Dynamic adjusting module, the common frequency measurement during for dynamic community adjusting gravity treatment triggers thresholding, and the common frequency measurement after adjusting is triggered to thresholding notifying cell gravity treatment module;
Cell reselection module, carries out cell reselection for triggering thresholding according to the common frequency measurement after adjusting.
9. device according to claim 8, is characterized in that, described dynamic adjusting module triggers thresholding specifically for the common frequency measurement according to homogeneous-frequency adjacent-domain number measured before successful gravity treatment, while measuring the time dynamic community adjusting gravity treatment consume.
10. device according to claim 8, is characterized in that, described dynamic adjusting module, and the common frequency measurement when according to the gravity treatment of state of charge dynamic community adjusting triggers thresholding.
11. devices according to claim 8, it is characterized in that, described dynamic adjusting module, specifically for according to homogeneous-frequency adjacent-domain number measured before state of charge, successful gravity treatment and measurement, consume time dynamic community adjusting gravity treatment time common frequency measurement trigger thresholding.
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| CN201210302685.6A CN103634859A (en) | 2012-08-23 | 2012-08-23 | Cell reselection method and device |
| PCT/CN2013/080852 WO2014029269A1 (en) | 2012-08-23 | 2013-08-05 | Cell reselection method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302685.6A CN103634859A (en) | 2012-08-23 | 2012-08-23 | Cell reselection method and device |
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| CN103634859A true CN103634859A (en) | 2014-03-12 |
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