CN102083156A - District reselection method among wireless access technology and wireless communication terminal - Google Patents
District reselection method among wireless access technology and wireless communication terminal Download PDFInfo
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- CN102083156A CN102083156A CN2009102386316A CN200910238631A CN102083156A CN 102083156 A CN102083156 A CN 102083156A CN 2009102386316 A CN2009102386316 A CN 2009102386316A CN 200910238631 A CN200910238631 A CN 200910238631A CN 102083156 A CN102083156 A CN 102083156A
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Abstract
The invention provides a district reselection method among wireless access technology and a wireless terminal. The district reselection method comprises the following steps; the terminal judges whether to trigger district reselection according to a first reselection starting and measuring threshold value and a first reselection judging threshold value sent by network side when the terminal is not attached to a GPRS; otherwise the terminal judges whether to trigger district reselection according to a second reselection starting and measuring threshold value and a second reselection judging threshold value when the terminal is attached to a GPRS . According to the technical scheme of the invention, the district reselection among the wireless access technology can be realized more accurately and more flexibly.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to residence reselecting and wireless communication terminal between the wireless access technology that is used for wireless communication system.
Background technology
Third generation wireless communication system, as Universal Mobile Telecommunications System, allow mutual between the wireless access network, above-mentioned wireless access network such as the (GSM of Global Mobile Phone system, Global System for Mobilecommunications) and Universal Terrestrial Radio Access Network (UTRAN, UMTS Terrestrial RadioAccess Network).The user equipment (UE) of third generation wireless communication system, as mobile radiotelephone, can support multiple wireless access technology (RAT, Radio Access Technology), for example, can support TD SDMA to insert (TD-SCDMA, Time Division Synchronous Code Divisionmultiple access) and GSM.
At present, third generation communication network such as TD-SCDMA commercial network begin to take shape, but because the restriction of objective condition such as base station selection, and the attenuation characteristic of TD signal itself, making the TD network be difficult to reach with second generation communication network in present stage is the same overburden depth of 2G network, must be the deficiency that the interoperability of 2G and 3G network remedies the third generation communication network such as the TD network coverage by the second generation and third generation communication network.
In the prior art, the gravity treatment mechanism from the GSM network to the TD network generally includes following steps:
Rise to survey step, when the level value (RLA_C) of current GSM Serving cell when reaching certain threshold value, begin the measurement to 3G adjacent area such as TD adjacent area, wherein, this threshold value is by the value decision of parameter Qsearch_I;
Decision steps, when the difference of the RLA_C value of the received signal RSCP value that records on the PCCPCH channel of the TD adjacent area of GSM sub-district and current GSM Serving cell and the adjacent sub-district of all GSM all greater than predetermined threshold value and lasting more than 5 seconds the time, then trigger GSM and TD-SCDMA intersystem cell reselection, wherein, this judging threshold is determined by the value of parameter TDD_Qoffset:
(TD?PCCPCH?RSCP-RLA_C＞TDD_Qoffset)＞＝5s。
But, owing to reasons such as gravity treatment mechanism imperfection, network compatibility problem, terminal certainty of measurement deficiency between system, cause opening terminal has appearred after the interoperability of 2G and 3G and can't effective resident TD network, each terminal network selection problem such as differ greatly.For this reason, proposed a kind of of above-mentioned current mechanism improved mechanism, during this improves mechanism: revise to working the gravity treatment startup measurement threshold value of surveying in the step; And, changed the value of gravity treatment decision threshold between the system in the decision steps into absolute value by relative value.
In realizing process of the present invention, the inventor finds that the residence reselecting (comprising the above-mentioned old mechanism of prior art and the above-mentioned improved new mechanism of prior art) of prior art can't be accurately and realize that neatly GSM is to TD internetwork sub-district gravity treatment, particularly, there are the following problems at least for the residence reselecting of prior art:
Under existing gravity treatment mechanism, optimize to the interdepartmental system reselecting parameters of TD by single 2G, be difficult to realize: the how resident 2G network of voice service, the how resident TD network of data service, advantage is carried in the data service that can't give full play to the TD network;
By existing gravity treatment mechanism, be difficult to realize the load balancing between 2G and 3G system.When the 2G Serving cell is not the strongest sub-district, if satisfy gravity treatment decision threshold between system, the sub-district gravity treatment in the less taking into account system of improved new mechanism, gravity treatment between easier triggering system reselects to the TD network; Thereby if when needing future the 2G network to receive more users, this existing gravity treatment mechanism has reduced the resident probability at the 2G network.
Summary of the invention
The invention provides residence reselecting and wireless communication terminal between a kind of wireless access technology, can't be accurately and realize that neatly GSM is to TD internetwork sub-district gravity treatment with the reselecting method that solves prior art.
To achieve these goals, the invention provides the residence reselecting between a kind of wireless access technology, be used to realize terminal sub-district gravity treatment to the sub-district that second wireless access technology is supported from sub-district that first wireless access technology of current service is supported, wherein, described method comprises the steps:
When terminal is in the state that GPRS do not adhere to, first gravity treatment that described terminal issues according to network side starts measures the threshold value and the first gravity treatment judging threshold, when the level value in the sub-district of the first wireless access technology support of current service satisfies described first gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the described first gravity treatment judging threshold, and terminal triggers the gravity treatment of described sub-district;
When terminal is in the state that GPRS adheres to, second gravity treatment that terminal issues according to network side starts measures the threshold value and the second gravity treatment judging threshold, when the level value in the sub-district of the first current wireless access technology support satisfies described second gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, and terminal triggers the gravity treatment of described sub-district.
Preferably, described residence reselecting, wherein, described first wireless access technology is a Global Mobile Phone system wireless Access Network; Described second wireless access technology is the TDS-CDMA system wireless access network.
Preferably, described residence reselecting, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, and the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
Preferably, described residence reselecting, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment or the second gravity treatment absolute decree threshold value.
Preferably, described residence reselecting, wherein,
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
Preferably, described residence reselecting, wherein, described network side sends described first gravity treatment startup by general wireless packet service system message or Global Mobile Phone system business system message and measures threshold value, the first gravity treatment judging threshold, second gravity treatment startup measurement threshold value and the second gravity treatment judging threshold to described end side.
On the other hand, provide a kind of wireless communication terminal, wherein, comprising:
The parameter receiver module is used to receive first gravity treatment startup measurement threshold value, the first gravity treatment judging threshold, second gravity treatment startup measurement threshold value and the second gravity treatment judging threshold that network side issues;
First judging module, be used for when described terminal is in the state that GPRS do not adhere to, whether first gravity treatment that issues according to network side starts measures threshold value and the judgement of the first gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described first gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described first gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district;
Second judging module, be used for when described terminal is in the state that GPRS adheres to, whether second gravity treatment that issues according to network side starts measures threshold value and the judgement of the second gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described second gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district.
Preferably, described wireless communication terminal, wherein, described first wireless access technology is a Global Mobile Phone system wireless Access Network; Described second wireless access technology is the TDS-CDMA system wireless access network.
Preferably, described wireless communication terminal, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
Preferably, described wireless communication terminal, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment or the second gravity treatment absolute decree threshold value.
Preferably, described wireless communication terminal, wherein,
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
A technical scheme in the technique scheme has following technique effect:
Among the present invention, according to terminal GPRS Mobility Management layer protocol status is the difference of GMM state, network side issues different cell reselection parameters, end side can be carried out sub-district gravity treatment between wireless access technology according to the cell reselection parameters that issues, utilization present invention can be implemented in adopts different cell reselection parameters to carry out sub-district gravity treatment between wireless access technology when terminal is carried out dissimilar business such as circuit domain business with packet switch domain service, as sub-district gravity treatment from the GSM network to the TD network, can realize accurately and the sub-district gravity treatment between wireless access system flexibly, particularly, can realize the differentiation of and packet switch domain service professional to the terminating circuit territory, and then can realize the load sharing of two class business at G net and T net, for example realize that voice service resides in the 2G network more, data service more resides in the TD network, to give full play to the data service carrying advantage of TD network.
Further, the present invention can adopt gravity treatment strategy more accurately by in conjunction with relative value thresholding and absolute value thresholding, thereby can be more flexible in and accurate the sub-district gravity treatment between network condition realization wireless access technology.
Description of drawings
Fig. 1 is the schematic flow sheet of the residence reselecting between the wireless access technology of the embodiment of the invention;
Fig. 2 is the GMM state state transitions schematic diagram each other of terminal;
Fig. 3 is the structural representation of the wireless communication terminal of the embodiment of the invention.
Embodiment
For technical problem, technical scheme and advantage that the embodiment of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the schematic flow sheet of the residence reselecting between a kind of wireless access technology of the embodiment of the invention.The method of the embodiment of the invention is used to realize terminal sub-district gravity treatment to the sub-district that second wireless access technology is supported from sub-district that first wireless access technology of current service is supported, for example sub-district gravity treatment from the GSM network to the TD-SCDMA network.As Fig. 1, the method for this embodiment comprises the steps:
Step 101, when terminal is in the state that wireless universal grouping gprs service do not adhere to, first gravity treatment that terminal issues according to network side starts the measurement threshold value and the first gravity treatment judging threshold carries out sub-district gravity treatment judgement, when the level value in the sub-district of the first wireless access technology support of current service satisfies described first gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the gravity treatment mode decision scheme of the described first gravity treatment judging threshold correspondence, and terminal triggers the gravity treatment of described sub-district;
Step 102, when terminal is in the state that GPRS adheres to, second gravity treatment that terminal issues according to network side starts the measurement threshold value and the second gravity treatment judging threshold carries out sub-district gravity treatment judgement, when the level value in the sub-district of the first current wireless access technology support satisfies described second gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, and terminal triggers the gravity treatment of described sub-district.
Preferably, terminal mainly is engaged in circuit domain business such as speech business at the state that GPRS does not adhere to, and is engaged in packet switch domain service such as data business at the state that GPRS adheres to.
The technical scheme of the embodiment of the invention, according to terminal GPRS Mobility Management layer protocol status is the difference of GMM state, network side issues different cell reselection parameters, end side can be carried out sub-district gravity treatment between wireless access technology according to the cell reselection parameters that issues, utilizing the present invention is that circuit domain business and PS business are the interdepartmental system gravity treatment of packet switch domain service by different reselecting parameters control CS business, can realize the load sharing of two class business at G net and T net, realize the how resident 2G network of voice service, the how resident TD network of data service, thus advantage is carried in the data service that can give full play to the TD network.
Preferably, the state that do not adhere to of above-mentioned GPRS comprises: GPRS free time (Idle) state.
Preferably, the state that adheres to of above-mentioned GPRS comprises: ready (Ready) state of GPRS and GPRS (Standby) state of awaiting orders.
In one embodiment of this invention, the above-mentioned first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, and the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is: the signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is: the signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
In another embodiment of the present invention, the above-mentioned first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and/or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and/or the second gravity treatment absolute decree threshold value.
In an embodiment of the present invention, the gravity treatment mode decision scheme of the relative judging threshold correspondence of first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the relative judging threshold correspondence of second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
In realization of the present invention, can in advance first, second gravity treatment be started the corresponding relation of measuring between threshold value and the gravity treatment startup strategy, corresponding relation between first, second gravity treatment judging threshold and the gravity treatment mode decision scheme comprises: the correspondence setting between the corresponding relation between gravity treatment decision threshold and the gravity treatment mode decision scheme and absolute gravity treatment decision threshold and the gravity treatment mode decision scheme is on terminal relatively.
In an embodiment of the present invention, terminal be in gprs service not the reselecting parameters during attachment state comprise: start and measure thresholding Qsearch_I, the gravity treatment decision threshold is promptly carried out the relative value thresholding TDD_Qoffset of different system cell gravity treatment relatively, and absolute gravity treatment decision threshold is promptly carried out the absolute value thresholding TDD_RSCP_Threshold of different system cell gravity treatment; Reselecting parameters when terminal is in the gprs service attachment state comprises: start and measure thresholding Qsearch_P, relatively gravity treatment decision threshold TDD_GPRS_Qoffset, definitely gravity treatment decision threshold TDD_GPRS_RSCP_Threshold.
Table 1 is in the embodiment of the invention, starts the value of measurement thresholding Qsearch_I and the example that gravity treatment starts the corresponding relation between the strategy; Table 2 is an example of the corresponding relation between relative gravity treatment decision threshold TDD_Qoffset and the gravity treatment mode decision scheme; Table 3 is an example of the corresponding relation between absolute gravity treatment decision threshold TDD_RSCP_Threshold and the gravity treatment mode decision scheme.Content in table 1, table 2, the table 3 can be disposed according to demand by operator.
Table 1
Table 2
Table 3
The corresponding relation that value that start to measure thresholding Qsearch_P and gravity treatment start between the strategy can be identical with above-mentioned table 1, also can difference; Relatively gravity treatment decision threshold TDD_GPRS_Qoffset can be identical with above-mentioned table 2 with corresponding relation between the gravity treatment mode decision scheme, also can difference; Absolute gravity treatment decision threshold TDD_GPRS_RSCP_Threshold can be identical with above-mentioned table 3 with corresponding relation between the gravity treatment mode decision scheme, also can difference.Utilize embodiments of the invention, exemplarily, when all utilizing the corresponding relation of table to carry out the sub-district gravity treatment when GPRS is in different GMM state, the value of Qsearch_I and Qsearch_P can be inequality; The value of TDD_Qoffset and TDD_GPRS_Qoffset can be inequality; The value of TDDRSCP_Threshold and TDD_GPRS_Qoffset can be inequality.Exemplarily, in the GSM idle condition, when the Qsearch_I value that issues when network side is 5,, then is lower than-during 78dBm, starts when the GSM signal the TD-SCDMA cell measurement according to table 1; In the GSM armed state, when the Qsearch P value that issues when network side is 9, according to table 1, when the GSM signal is higher than-during 86dBm, starts the TD-SCDMA cell measurement.
In one embodiment of the invention, network side sends to terminal with the value of above-mentioned 6 reselecting parameters; Terminal still is not attachment state of GPRS according to present located GMM state for the GPRS attachment state, determine to carry out the sub-district gravity treatment, still carry out the sub-district gravity treatment according to the value of Qsearch_P, TDD_GPRS_Qoffset, TDD_GPRS_RSCP_Threshold according to the value of Qsearch_I, TDD_Qoffset, TDD_RSCP_Threshold.Preferably, network side issues the value of above-mentioned parameter by broadcast.Exemplarily, if when network has grouping (PBCCH, Packet Broadcast Control Channel), then the system message PSI 3quater that issues by PBCCH is gprs system message 3quater, and above-mentioned 6 parameters are handed down to terminal; If network does not have PBCCH, then the SI 2quarter message that issues by Broadcast Control Channel (BCCH, Broadcast ControlChannel) is gsm system message 2quater, and above-mentioned 6 parameters are handed down to terminal.
Preferably, after terminal receives the parameter value that above-mentioned network side issues, on the basis of above-mentioned parameter value, increase a fixing amount of bias, and utilize the threshold value that has increased amount of bias to carry out above-mentioned gravity treatment startup or gravity treatment mode decision scheme.
The present invention has overcome the deficiency of existing GSM to TD-SCDMA intersystem cell reselection mechanism, in interdepartmental system gravity treatment judgement, adopt relative value thresholding and absolute value thresholding simultaneously, can be more flexibly according to the interdepartmental system sub-district gravity treatment of network condition realization from GSM to the TD network.For example, gravity treatment mechanism according to prior art, only consider the absolute field strength or the relative value of TD adjacent area, the situation of the following user's of influence perception then can occur: fine in 2G network field intensity and current business quality, but just switch to the TD network owing to TD adjacent area field intensity reaches the absolute thresholding of gravity treatment; Perhaps current 2G network field intensity and quality of service are poor, but because TD adjacent area field intensity does not reach the gravity treatment relative threshold and call drop.And adopt technical scheme of the present invention, and considering the gravity treatment thresholding of relative value and absolute value simultaneously, then can overcome the above problems.
Fig. 2 is the GMM state state transitions schematic diagram each other of terminal.As Fig. 2, terminal can be changed between GPRS idle condition and the ready state of GPRS, and changes between ready state of GPRS and GPRS armed state.When the GMM of terminal state changed, its cell reselection parameters that adopts also respective change was to adapt with current GMM state.
In another embodiment of the present invention, a gravity treatment decision threshold only adopts absolute value; Terminal adopts existing gravity treatment mechanism in the GSM idle condition, utilizes the thresholding of the value of Qsearch_I and TDD_Qoffset as sub-district gravity treatment startup and judgement; Terminal is ready and armed state at GSM, utilizes the thresholding of the value of Qsearch_P and TDD_GPRS_Qoffset as sub-district gravity treatment startup and judgement.Particularly, comprising:
1) starts different system cell measuring process
Initial terminal resides on the GSM sub-district, the signal strength signal intensity that measures this sub-district of GSM when terminal reaches predetermined gravity treatment and starts when measuring threshold value, this gravity treatment starts measures threshold value is handed down to terminal by the GSM cell broadcast messages parameter Qsearch_I decision, terminal increases a fixing amount of bias and obtains this gravity treatment startup measurement threshold value on the Qsearch_I basis, terminal begins to start the measurement to the adjacent sub-district of different system TD-SCDMA.
2) sub-district gravity treatment enforcement of the judgment process
Suppose that the TD-SCDMA neighboring area signal intensity that terminal is measured is Rtd-scdma, when the value of Rtd-scdma is greater than TDD_Qoffset within a certain period of time, terminal will be carried out the gravity treatment of TD-SCDMA sub-district.
End side is after execution GPRS adheres to, the GMM state transfers Ready to, enable Qsearch_P, TDD_GPRS_Qoffset replace original Qsearch_I, TDD_Qoffset this moment, and the same when starting measuring process and gravity treatment judging process with above-mentioned IDLE state.
After terminal GMM state transfers Standby to from Ready, still adopt Qsearch_P, TDD_GPRS_Qoffset as the thresholding that starts measuring process and gravity treatment judging process.
Only transferring IDLE to from Ready at terminal GMM state is after terminal goes GPRS to adhere to, and just reactivates Qsearch_I, TDD_Qoffset and replaces Qsearch_P, TDD_GPRS_Qoffset as the thresholding that starts measuring process and gravity treatment judging process.
Fig. 3 is the structural representation of the wireless communication terminal of the embodiment of the invention.As Fig. 3, this wireless communication terminal comprises: parameter receiver module 301 is used to receive first gravity treatment startup measurement threshold value, the first gravity treatment judging threshold, second gravity treatment startup measurement threshold value and the second gravity treatment judging threshold that network side issues; First judging module 302, be used for when described terminal is in the state that GPRS do not adhere to, whether first gravity treatment that issues according to network side starts measures threshold value and the judgement of the first gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described first gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described first gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district; Second judging module 303, be used for when described terminal is in the state that GPRS adheres to, whether second gravity treatment that issues according to network side starts measures threshold value and the judgement of the second gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described second gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district.
Preferably, described wireless communication terminal, wherein, described first wireless access technology is the gsm wireless Access Network; Described second wireless access technology is the TD-SCDMA wireless access network.
Preferably, described wireless communication terminal, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
Preferably, described wireless communication terminal, wherein, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment or the second gravity treatment absolute decree threshold value.
Preferably, described residence reselecting, wherein, the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district; The gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the described principle of the embodiment of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. the residence reselecting between a wireless access technology is used to realize terminal sub-district gravity treatment to the sub-district that second wireless access technology is supported from sub-district that first wireless access technology of current service is supported, it is characterized in that described method comprises the steps:
When terminal is in the state that GPRS do not adhere to, first gravity treatment that described terminal issues according to network side starts measures the threshold value and the first gravity treatment judging threshold, when the level value in the sub-district of the first wireless access technology support of current service satisfies described first gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the described first gravity treatment judging threshold, and terminal triggers the gravity treatment of described sub-district;
When terminal is in the state that GPRS adheres to, second gravity treatment that terminal issues according to network side starts measures the threshold value and the second gravity treatment judging threshold, when the level value in the sub-district of the first current wireless access technology support satisfies described second gravity treatment and starts the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, and the signal strength values in the sub-district of the described second wireless access technology support is when satisfying the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, and terminal triggers the gravity treatment of described sub-district.
2. residence reselecting according to claim 1 is characterized in that, described first wireless access technology is a Global Mobile Phone system wireless Access Network; Described second wireless access technology is the TDS-CDMA system wireless access network.
3. residence reselecting according to claim 1, it is characterized in that, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, and the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
4. residence reselecting according to claim 1, it is characterized in that, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment or the second gravity treatment absolute decree threshold value.
5. according to claim 3 or 4 described residence reselectings, it is characterized in that,
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
6. according to each described residence reselecting among the claim 1-4, it is characterized in that described network side sends described first gravity treatment by general wireless packet service system message or Global Mobile Phone system business system message and starts measurement threshold value, the first gravity treatment judging threshold, second gravity treatment startup measurement threshold value and the second gravity treatment judging threshold to described end side.
7. a wireless communication terminal is characterized in that, comprising:
The parameter receiver module is used to receive first gravity treatment startup measurement threshold value, the first gravity treatment judging threshold, second gravity treatment startup measurement threshold value and the second gravity treatment judging threshold that network side issues;
First judging module, be used for when described terminal is in the state that GPRS do not adhere to, whether first gravity treatment that issues according to network side starts measures threshold value and the judgement of the first gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described first gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described first gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district;
Second judging module, be used for when described terminal is in the state that GPRS adheres to, whether second gravity treatment that issues according to network side starts measures threshold value and the judgement of the second gravity treatment judging threshold and triggers from sub-district that first wireless access technology of current service is supported to the sub-district gravity treatment of the sub-district that second wireless access technology is supported, and the level value in the sub-district of the first wireless access technology support of described current service is when satisfying described second gravity treatment and starting the gravity treatment of measuring the threshold value correspondence and start strategy, triggering is to the measurement of the sub-district of described second wireless access technology support, when the signal strength values in the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the described second gravity treatment judging threshold correspondence, trigger the gravity treatment of described sub-district.
8. wireless communication terminal according to claim 7 is characterized in that, described first wireless access technology is a Global Mobile Phone system wireless Access Network; Described second wireless access technology is the TDS-CDMA system wireless access network.
9. according to the described wireless communication terminal of claim 7, it is characterized in that, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment and the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment and the second gravity treatment absolute decree threshold value
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described first gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment and the gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence simultaneously;
The gravity treatment mode decision scheme that the signal strength values of the sub-district of the described second wireless access technology support satisfies the described second gravity treatment judging threshold correspondence is:
The signal strength values of the sub-district of the described second wireless access technology support satisfies the gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment and the gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence simultaneously.
10. wireless communication terminal according to claim 7, it is characterized in that, the described first gravity treatment judging threshold comprises: the relative judging threshold of first gravity treatment or the first gravity treatment absolute decree threshold value, the described second gravity treatment judging threshold comprises: the relative judging threshold of second gravity treatment or the second gravity treatment absolute decree threshold value.
11. according to claim 9 or 10 described wireless communication terminals, it is characterized in that,
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described first gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described first gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described first gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described first gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the relative judging threshold correspondence of described second gravity treatment is: when the signal strength values height of the sub-district that the signal strength values of the sub-district that described second wireless access technology is supported is supported than first wireless access technology of described current service and both differences during greater than the relative judging threshold of described second gravity treatment, trigger the gravity treatment of described sub-district;
The gravity treatment mode decision scheme of the described second gravity treatment absolute decree threshold value correspondence is: when the signal strength values of the sub-district of the described second wireless access technology support is higher than the described second gravity treatment absolute decree threshold value, trigger the gravity treatment of described sub-district.
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