CN101262698A - Switch control method of dual-mode terminal between different systems under dual idle state - Google Patents

Switch control method of dual-mode terminal between different systems under dual idle state Download PDF

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Publication number
CN101262698A
CN101262698A CNA2007101304127A CN200710130412A CN101262698A CN 101262698 A CN101262698 A CN 101262698A CN A2007101304127 A CNA2007101304127 A CN A2007101304127A CN 200710130412 A CN200710130412 A CN 200710130412A CN 101262698 A CN101262698 A CN 101262698A
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network
terminal
dual
described terminal
scdma
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张春国
黄河
沙秀斌
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ZTE Corp
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ZTE Corp
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Abstract

The invention relates to a switching control method for switching between heterogeneous systems when in the dual standby of a double-mode terminal. Although not any part of the last generation mature network side is required to be modified and the double-mode terminal is not required to have a measurement capability of the heterogeneous system, the switching control among the heterogeneous systems of the terminal can be realized. The double-mode terminal is connected with a first network and a second network and is in dual standby condition of a first network mode or a second network mode. The method comprises the following steps: (a) the terminal is connected with a service and a radio network controller of the first network judges whether the service can be loaded by the second network, if yes, the next step (b) is executed; (b) the radio network controller judges whether the location of the terminal meets switching conditions, if yes, the terminal is triggered to be switched from the first network to the second network.

Description

Method for handover control during the two standby of dual-mode terminal between different system
Technical field
The present invention relates to the wireless communication technique field, the control method that the dual-mode terminal that relates in particular to no isosystem measurement ability switches in different system when two standby.
Background technology
TD-SCDMA is as a kind of emerging network technology, and networking is an incremental process, and the operator that generally builds the TD-SCDMA network often runs the 2G network of comparative maturity simultaneously.According to market and network operation present situation, the TD-SCDMA networking initial stage does not need to set up the new net of an independence, all standing, and should consider to realize as required, by stages on existing 2G network foundation all standing of TD-SCDMA.Based on this, the TD-SCDMA networking at first will consider in the dense urban that a large amount of speech businesses and data traffic requirement are arranged, urban district, airport, the emphasis main line of communication and tourist attractions networking and guarantees the continuous covering in these zones, and suburb and rural cover and then still carried by original 2G wireless network.The 2G network has the covering of high-quality, sufficient site, loyal customer group, and these competitive advantages must be made full use of.This has just determined TD-SCDMA, must be local city or the hot zones of covering, and utilize existing 2G network to replenish the covering of other deficiency in significant period of time at first stage of construction.Must produce switching to guarantee stride the continuous covering of mobile communications network in the marginal zone of TD-SCDMA and 2G network boundary this moment.
According to 3GPP agreement regulation, carry out different system and switch, need terminal to have the measurement capability of different system cell signal quality, and finish between system by reorientation standard agreement process between the network terminal system and to switch.This just requires terminal must realize the measurement of different system, and needs modification 2G network side just can make dual-mode terminal incision 2G network.The 2G network of comparative maturity has GSM, CDMA IS-95, PCS etc. at present, for the time being GPRS, CDMA 2000-1x etc. is also calculated in the scope of the ripe 2G network of previous generation here.
The operator of operation TD-SCDMA network might move one or more of top ripe 2G network simultaneously, the TD-SCDMA terminal is developed simultaneously have the function of switching to these ripe 2G networks unrealistic.At the TD-SCDMA network operation initial stage, the dual-mode terminal that can have quite a few TD-SCDMA and ripe 2G technology, these special dual-mode terminals can't accomplish to detect simultaneously the ability of 2G adjacent cell signal quality in the TD-SCDMA system that is just using, can not finish switching between system by repositioning process between the system of agreement regulation.And this Terminal Type is incited somebody to action long-term existence afterwards as a kind of special dual-mode terminal.Therefore, need at present a kind of for this dual-mode terminal method for handover control between different system when two standby.
Summary of the invention
Method for handover control when technical problem to be solved by this invention provides the two standby of a kind of dual-mode terminal between different system, need not to revise any part of the ripe network side of previous generation, do not need dual-mode terminal to have the isosystem measurement ability yet, can realize the switching controls between the different system of terminal.
In order to solve the problems of the technologies described above, method for handover control when the invention provides the two standby of a kind of dual-mode terminal between different system, described dual-mode terminal connects first network and second network, described dual-mode terminal is in first network formats/second network formats double standby state, said method comprising the steps of:
(a) described terminal has connected business in first network, and the radio network controller of this first network judges whether this business is that second network can carry, if carry out next step;
(b) described radio network controller judges whether this terminal position satisfies switching condition, if then trigger described terminal and switch to second network from first network.
Further, said method also can have following characteristics: in described step (a), the business that described terminal connects in first network is following one or more: session service, stream class service, background business, interactive service.
Further, said method also can have following characteristics: in described step (b), described switching condition is meant that described terminal is positioned at edge cell, and perhaps described terminal is positioned at non-edge cell and can't switches at Home Network.
Further, said method also can have following characteristics: described terminal can't be switched in Home Network and is meant, the signal quality of described terminal place Serving cell and adjacent sub-district all is lower than predetermined threshold value, perhaps described terminal place Serving cell, adjacent area and all transship with the load of coverage cell.
Further, said method also can have following characteristics: described radio network controller is netted interior measurement by measuring the described terminal of control messages order, judges according to the measurement report that described terminal is returned whether the signal quality of described terminal place Serving cell and adjacent sub-district all is lower than default threshold value.
Further, said method also can have following characteristics: whether the load that described radio network controller is assessed described terminal place Serving cell by startup load evaluation algorithm transships, if, then judge the adjacent area and with the load of coverage cell overload whether all, if then carry out network and switch.
Further, said method also can have following characteristics: described first network formats is the 3G network standard, and described second network formats is the ripe network formats of previous generation.
Further, said method also can have following characteristics: described 3G network standard is TD-SCDMA or WCDMA, and the ripe network formats of described previous generation is following a kind of: GSM, CDMA IS-95, PCS, GPRS, CDMA 2000-1x.
Further, said method also can have following characteristics: when described second standard was GSM, in described step (a), the ripe network of described previous generation institute can loaded service be speech business.
The method of the invention does not need to revise any part of ripe 2G technical network side, does not need dual-mode terminal to have the isosystem measurement ability yet, can realize the switching controls between the different system of terminal, and guarantees the continuity of customer service.The present invention is applicable to that TD-SCDMA switches to the different system of GSM, CDMA IS-95, PCS, GPRS, CDMA 2000-1x etc., in addition, is applicable to that also the different system between other any 2 wireless systems is switched, realize simple, exploitation can dominate the market rapidly fast, has very high practical value.
Description of drawings
Fig. 1 is for switching to the overview flow chart of 2G network formats from the TD-SCDMA standard;
Fig. 2 determines the flow chart of switching time during variation for the adjacent cell quality of Serving cell and TD-SCDMA;
Fig. 3 determines the flow chart of switching time when being the Serving cell traffic overload;
Fig. 4 determines the flow chart of switching time when entering the TD-SCDMA edge cell for terminal.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
The described dual-mode terminal of present embodiment relates to two kinds of network formats, comprises the ripe network formats (second standard) of TD-SCDMA standard (first standard) and a kind of previous generation, as GSM, CDMA IS-95, PCS, GPRS, CDMA 2000-1x etc.Therefore, this dual-mode terminal has three kinds of standby modes, the single standby of first standard, the single standby of second standard and the two standbies of the first/the second standard.Two standby characteristics of dual-mode terminal make it can reside in simultaneously in TD-SCDMA network and the 2G network, and while paging receiving in two networks, this just makes when this Terminal Type is in connection status in the TD-SCDMA network, some business can switch to the 2G network, core net can be by the 2G part of this terminal of paging, set up the conversation back and switch user's face, thereby guarantee the continuity of customer service.
Dual-mode terminal is under dual standby mode, and the different system switching controls flow process from first standard (as TD-SCDMA) to the second standard network may further comprise the steps as shown in Figure 1:
Step 101, described terminal certain sub-district in the TD-SCDMA network has connected certain business (or claiming to be in connection status), the business that the radio network controller of TD-SCDMA network (RNC) is judged the TD-SCDMA network carrying whether by target 2G network the energy loaded service, if, execution in step 102, otherwise, continue normal flow;
What may carry this moment is session service, stream class service, background business or interactive service, and wherein, session service comprises speech business and visual telephone service; Interactive service comprises that mainly mobile e-business, download-type games amusement and WWW browse etc.; The stream business mainly comprises one-way business such as audio stream and video flowing; Background business mainly is that the class business is transmitted in storage, comprises Email, short message service, information service etc.If second standard is GSM, then switchable have only speech business.
Because RNC understands each professional characteristic, can judge; If there are a plurality of business simultaneously, but will be switched over, and other business may be broken for the 2G loaded service.
Step 102, RNC judges whether terminal is switched to the 2G network, if, execution in step 103, otherwise, forward step 105 to;
RNC judges according to certain criterion whether terminal is switched to the 2G network, and described decision rule is exactly that RNC determines opportunity of switching to the 2G network, satisfies one of following three conditions and can trigger this terminal and switch to ripe 2G network from TD-SCDMA:
As UE during in non-edge cell, Serving cell and neighboring cell signal quality be variation all, and business can be carried in the ripe 2G network, this class situation generally appears at TD-SCDMA and covers when appearance is weak distinguishes or be about to enter the blind area, handling process will specifically describe in follow-up first embodiment as shown in Figure 2;
As UE during in non-edge cell, the Serving cell traffic overload, in the time of carrying out load balancing, this situation generally appear at Serving cell, adjacent area and the situation of all transshipping with coverage cell under, handling process will specifically describe in follow-up second embodiment as shown in Figure 3;
When UE is in edge cell, system configuration is to be triggered to the switching of ripe 2G network once entering this sub-district, this is that the edge cell of TD-SCDMA is used as the transition region that 2G, 3G switch, and handling process will specifically describe in follow-up the 3rd embodiment as shown in Figure 4.
Described Serving cell is the current resident sub-district of UE; The adjacent area is the only geographical adjacent sub-district of; Be meant the sub-district that covers same geographic area with coverage cell.
Step 103, described dual-mode terminal are carried out the preparation to ripe 2G network switching from TD-SCDMA, as forbid that other algorithm works on, forbids between transfer period that the dynamic radio carrying is controlled, all measurements of having initiated are cut off etc.;
Step 104 starts the different system switching flow to the 2G network, and the 2G part of TD-SCDMA core net paging 2G end side uses call flow to finish switching;
The TD-SCDMA network uses the 2G part of paging flow process to 2G ICQ dual-mode terminal, the 2G partial response paging of dual-mode terminal, after success was set up and called out, the TD-SCDMA network disconnected the TD-SCDMA part of dual-mode terminal again, thereby realized that TD-SCDMA switches to the business of ripe 2G network.
Step 105, court verdict are that dual-mode terminal does not switch to the 2G network, carry out other flow process (carry out this business as continuing in the TD-SCDMA network, also might call drop, discharge wherein partial service etc.).
First embodiment
The adjacent sub-district of Serving cell and TD-SCDMA is the method for handover control during variation all, as shown in Figure 2, may further comprise the steps:
Step 201, dual-mode terminal certain sub-district in the TD-SCDMA network is in connection status, and 3G network institute loaded service can be moved in target 2G network at present;
Step 202, RNC nets interior measurement (interior frequently and inter-frequency measurement) by measuring the control messages command terminal, measures the signal quality of the adjacent sub-district of Serving cell and TD-SCDMA;
The purpose of measuring in netting is to judge whether and need switches in the TD-SCDMA net.
Step 203, terminal is measured Serving cell and the adjacent sub-district of TD-SCDMA according to measuring control messages, reports to the radio network controller return measurement after measurement is finished;
Step 204, RNC adjudicates according to measurement report, if the signal quality of the adjacent sub-district of Serving cell and TD-SCDMA all is lower than default threshold value, then execution in step 206, otherwise, execution in step 205;
Step 205, court verdict are that dual-mode terminal does not switch to the 2G network;
Step 206, court verdict are that dual-mode terminal switches to the 2G network.
Second embodiment
Method for handover control during the Serving cell overload as shown in Figure 3, may further comprise the steps:
Step 301, dual-mode terminal certain sub-district in the TD-SCDMA network is in connection status, and 3G network institute loaded service can be moved in target 2G network at present;
Step 302, RNC starts the load evaluation algorithm, according to every index of system's operation the load condition of Serving cell is assessed;
Step 303 follows according to the load evaluation result to judge whether the load of Serving cell transships, if, execution in step 304, otherwise execution in step 305;
Step 304 judges whether adjacent sub-district of TD-SCDMA and the TD-SCDMA sub-district that covers together all transship, if, execution in step 306, otherwise execution in step 305;
The purpose that the load of three kinds of sub-districts is assessed is to judge whether and need switches in the TD-SCDMA net.
Step 305, court verdict are that dual-mode terminal does not switch to the 2G network;
Step 306, court verdict are that dual-mode terminal switches to the 2G network.
The 3rd embodiment
Method for handover control when dual-mode terminal enters the TD-SCDMA edge cell as shown in Figure 4, may further comprise the steps:
Step 401, dual-mode terminal certain sub-district in the TD-SCDMA network is in connection status, and 3G network institute loaded service can be moved in target 2G network at present;
Step 402, RNC reading system configuration information, if Serving cell is configured to " cutting the 2G system once entering this sub-district ", then execution in step 404, otherwise execution in step 403;
That is to say, the edge cell of TD-SCDMA is used as the transition region that 2G, 3G switch, just switch as long as enter this sub-district.
Step 403, court verdict are that dual-mode terminal does not switch to the 2G network;
Step 404, court verdict are that dual-mode terminal switches to the 2G network.
The method for handover control of Fig. 4 is very practical at first stage of construction for the TD-SCDMA network, is a kind of method that exchanges business continuance with sacrifice outermost layer cell capacity for.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention; for example; for other 3G systems except that the TD-SCDMA system; as WCDMA; method for handover control of the present invention still is suitable for; in addition; switching between any two wireless systems all can be adopted the method for the invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (9)

1. the method for handover control between different system during the two standby of dual-mode terminal, described dual-mode terminal connects first network and second network, and described dual-mode terminal is in first network formats/second network formats double standby state, said method comprising the steps of:
(a) described terminal has connected business in first network, and the radio network controller of this first network judges whether this business is that second network can carry, if carry out next step;
(b) described radio network controller judges whether this terminal position satisfies switching condition, if then trigger described terminal and switch to second network from first network.
2. the method for claim 1 is characterized in that, in described step (a), the business that described terminal connects in first network is following one or more: session service, stream class service, background business, interactive service.
3. the method for claim 1 is characterized in that, in described step (b), described switching condition is meant that described terminal is positioned at edge cell, and perhaps described terminal is positioned at non-edge cell and can't switches at Home Network.
4. method as claimed in claim 3, it is characterized in that, described terminal can't be switched in Home Network and is meant that the signal quality of described terminal place Serving cell and adjacent sub-district all is lower than predetermined threshold value, perhaps described terminal place Serving cell, adjacent area and all transship with the load of coverage cell.
5. method as claimed in claim 4, it is characterized in that, described radio network controller is netted interior measurement by measuring the described terminal of control messages order, judges according to the measurement report that described terminal is returned whether the signal quality of described terminal place Serving cell and adjacent sub-district all is lower than default threshold value.
6. method as claimed in claim 4, it is characterized in that, whether the load that described radio network controller is assessed described terminal place Serving cell by startup load evaluation algorithm transships, if, then judge the adjacent area and with the load of coverage cell overload whether all, if then carry out network and switch.
7. the method for claim 1 is characterized in that, described first network formats is the 3G network standard, and described second network formats is the ripe network formats of previous generation.
8. method as claimed in claim 7 is characterized in that, described 3G network standard is TD-SCDMA or WCDMA, and the ripe network formats of described previous generation is following a kind of: GSM, CDMAIS-95, PCS, GPRS, CDMA 2000-1x.
9. method as claimed in claim 8 is characterized in that, when described second standard was GSM, in described step (a), the ripe network of described previous generation institute can loaded service be speech business.
CNA2007101304127A 2007-03-09 2007-07-18 Switch control method of dual-mode terminal between different systems under dual idle state Pending CN101262698A (en)

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Cited By (11)

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WO2011041966A1 (en) * 2009-10-10 2011-04-14 中兴通讯股份有限公司 Method and system for selecting network standard
CN102111815A (en) * 2011-02-28 2011-06-29 华为技术有限公司 Method and device for controlling load balance
CN102264096A (en) * 2011-08-15 2011-11-30 中兴通讯股份有限公司 Wireless communication terminal and network switching method thereof
CN102917425A (en) * 2012-11-15 2013-02-06 中国联合网络通信集团有限公司 Operator network switching method and device
CN102917426A (en) * 2012-11-15 2013-02-06 中国联合网络通信集团有限公司 Operator network switching method and device for IOT (Internal of Things) terminal
CN101932044B (en) * 2009-06-26 2013-04-24 华为技术有限公司 Method for acquiring system information of different systems, equipment and communication system thereof
CN103188729A (en) * 2011-12-31 2013-07-03 中兴通讯股份有限公司 Method and device for service balance
CN104185233A (en) * 2014-09-17 2014-12-03 陕西浩瀚新宇科技发展有限公司 Dual-mode mobile terminal switching method
WO2015042832A1 (en) * 2013-09-26 2015-04-02 华为技术有限公司 Method for feeding back information and wireless network control node
CN110621047A (en) * 2019-11-06 2019-12-27 Oppo（重庆）智能科技有限公司 Operator network switching method and device and computer readable storage medium
CN113055963A (en) * 2021-03-30 2021-06-29 联想(北京)有限公司 Information processing method and service equipment of communication network

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932044B (en) * 2009-06-26 2013-04-24 华为技术有限公司 Method for acquiring system information of different systems, equipment and communication system thereof
WO2011041966A1 (en) * 2009-10-10 2011-04-14 中兴通讯股份有限公司 Method and system for selecting network standard
US8867416B2 (en) 2011-02-28 2014-10-21 Huawei Technologies Co., Ltd. Method and apparatus for controlling load balance
CN102111815A (en) * 2011-02-28 2011-06-29 华为技术有限公司 Method and device for controlling load balance
CN102111815B (en) * 2011-02-28 2013-12-18 华为技术有限公司 Method and device for controlling load balance
CN102264096A (en) * 2011-08-15 2011-11-30 中兴通讯股份有限公司 Wireless communication terminal and network switching method thereof
CN102264096B (en) * 2011-08-15 2018-01-16 深圳市中兴物联科技有限公司 A kind of wireless communication terminal and its method for switching network
CN103188729A (en) * 2011-12-31 2013-07-03 中兴通讯股份有限公司 Method and device for service balance
CN102917426A (en) * 2012-11-15 2013-02-06 中国联合网络通信集团有限公司 Operator network switching method and device for IOT (Internal of Things) terminal
CN102917425B (en) * 2012-11-15 2015-04-29 中国联合网络通信集团有限公司 Operator network switching method and device
CN102917426B (en) * 2012-11-15 2015-04-29 中国联合网络通信集团有限公司 Operator network switching method and device for IOT (Internal of Things) terminal
CN102917425A (en) * 2012-11-15 2013-02-06 中国联合网络通信集团有限公司 Operator network switching method and device
WO2015042832A1 (en) * 2013-09-26 2015-04-02 华为技术有限公司 Method for feeding back information and wireless network control node
CN104185233A (en) * 2014-09-17 2014-12-03 陕西浩瀚新宇科技发展有限公司 Dual-mode mobile terminal switching method
CN104185233B (en) * 2014-09-17 2018-05-04 陕西浩瀚新宇科技发展有限公司 A kind of mode mobile terminal switching method
CN110621047A (en) * 2019-11-06 2019-12-27 Oppo（重庆）智能科技有限公司 Operator network switching method and device and computer readable storage medium
CN113055963A (en) * 2021-03-30 2021-06-29 联想(北京)有限公司 Information processing method and service equipment of communication network
CN113055963B (en) * 2021-03-30 2022-08-19 联想(北京)有限公司 Information processing method and service equipment of communication network

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