CN101119586B - Method of implementing high speed downlink sharing channel inter-cell handoff - Google Patents
Method of implementing high speed downlink sharing channel inter-cell handoff Download PDFInfo
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- CN101119586B CN101119586B CN200610104195A CN200610104195A CN101119586B CN 101119586 B CN101119586 B CN 101119586B CN 200610104195 A CN200610104195 A CN 200610104195A CN 200610104195 A CN200610104195 A CN 200610104195A CN 101119586 B CN101119586 B CN 101119586B
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Abstract
The present invention discloses a method to switch high-speed downlink shared-channel cells. The method is invented to switch high-speed shared-channels between cells in different nodes B, a technique the prior art fails to provide. The method of the present invention includes the following steps: a wireless network controller determines the targeted cell of high-speed downlink shared-channels in a targeted node B whose mobile terminal needs to be switched to; wherein the targeted node B then establishes a radio link for bearing high-speed shared-resources on the original high-speed downlink shared-channel cell; while the mobile terminal is switched from the original high-speed downlink shared-channel cell to the targeted cell of high-speed downlink shared-channel of the target node B. By adopting the method to determine the target cell and build a radio in the target cell to bear high-speed shared resources, the mobile terminal is switched under the control of the wireless network controller, thus switching mobile terminals within HS-DSCH cells controlled by different nodes B.
Description
Technical field
The present invention relates to TD-SCDMA (Time Division-Synchronization Code Division MultipleAccess, TD SDMA) technology, particularly the implementation method of the high speed descending sharing channel minizone of TD-SCDMA switching.
Background technology
TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA inserts) system and WCDMA (Wide Code Division Multiple Access, the broadband S-CDMA inserts) can support non-symmetrical service well, this is very effective to satisfying the ever-increasing data traffic requirement of mobile communication subscriber.HSDPA (high speed downlink packet access) technology is a kind of technology that provides the high-speed down data business at the multi-user, can be used for satisfying the packet service that has the characteristic of bursting in the down link, as flow data service, interactive application.The HSDPA business realizes in Node B (Node B), to reduce time delay, for this reason, entity-MAC-hs (handling the functional entity of HS-DSCH among the Node B, the access control of MAC:media access control medium) entity of finishing the HSDPA function is arranged in a Node B.HSDPA has introduced a kind of new transmission channel---and high speed descending sharing channel (HS-DSCH), the user shares descending sign indicating number resource and power resource, carries out time division multiplexing.
(there are being a lot of identical points in system aspect the agreement of following for TD-SCDMA system and WCDMA.The realization purpose of switching all is the striding during the sub-district moves of UE (UE, user equipment), and keeps UE and does not interrupt with the communication that inserts side; Perhaps when the signal quality of Serving cell decayed to certain limit, UE can be transformed into the service quality better cell and go.But these two kinds of standards also have the place that is not quite similar aspect the concrete realization switching
In WCDMA, switch and mainly to be divided into direct-cut operation and soft handover, be respectively:, can preferentially use soft handoff procedure if when neighbor cell all is same frequency.Soft handover can insert the notion that side forms grand diversity.Assurance have two or more multi wireless links simultaneously and UE carry out communication, after wherein the quality of a wireless links can reach the requirement of communication quality fully, keep this Radio Link, remaining Radio Link can be deleted, and such benefit is in the communication not can obliterated data; And direct-cut operation is mainly used in alien frequencies, UE has only a wireless links and access side to carry out communication at any time, when doing direct-cut operation, UE needs the original Radio Link of deletion earlier, enable new Radio Link then and carry out communication with the access side, direct-cut operation is compared with soft handover, meeting obliterated data in handoff procedure.Certainly not exclusively by distinguishing with frequency or alien frequencies, it is with under the condition frequently that direct-cut operation also can be used for neighbor cell to the application conditions of soft handover and direct-cut operation.
And two kinds of switching modes are also arranged in TD-SCDMA: direct-cut operation and baton handover, baton handover are similar with the mechanism of direct-cut operation in essence.The implementation of direct-cut operation is very similar with implementation among the WCDMA, all is that UE needs the original Radio Link of deletion earlier, enables new Radio Link then and inserts side and carry out communication.The difference of TD-SCDMA system and WCDMA system is that the terminal of TD-SCDMA can only be supported a wireless links, therefore aloft on the interface, the terminal of TD-SCDMA pattern can only with the sub-district interactive information under the base stations control.
In the TD-SCDMA system, the sub-district that has the HSDPA function is called the HS-DSCH sub-district. when a UE with HD-DSCH business when a HS-DSCH sub-district switches to another HS-DSCH sub-district, the switching of HS-DSCH minizone can take place. because the HS-DSCH Radio Link is carried on that wireless links of this sub-district, when a UE when a sub-district switches to another sub-district, UE need delete the Radio Link of former sub-district and set up new Radio Link in new sub-district, and the high-speed shared resource that UE is assigned with also needs to switch on the Radio Link of new sub-district from the Radio Link of former sub-district.
Summary of the invention
For defective and the deficiency that overcomes prior art, the implementation method that the object of the present invention is to provide a kind of portable terminal that has been assigned with high-speed shared resource to switch in the high speed descending sharing channel minizone of the minizone of different Node B switching.
In order to achieve the above object, the implementation method that switch a kind of high speed descending sharing channel of the present invention minizone may further comprise the steps:
(1) radio network controller is determined the high speed descending sharing channel Target cell in the target node b that portable terminal will switch; Described step (1) is specially: (11) radio network controller sends measuring control information to portable terminal; Described measuring control information comprises: require the adjacent co-frequency cell of the former sub-district of terminal to report high speed descending sharing channel and/or the information of adjacent different frequency cell signal quality; (12) after portable terminal is received this measuring control information, send measurement report information to radio network controller; (13) radio network controller is determined the high speed descending sharing channel Target cell according to this measurement report information; Wherein, described Target cell and described former sub-district are on different Node B;
(2) target node b is set up the Radio Link of carrying high-speed shared resource on the high speed descending sharing channel Target cell;
(3) portable terminal switches to the high speed descending sharing channel Target cell of target node b from the former sub-district of the high speed descending sharing channel of origin node B.
As a further improvement on the present invention, described measurement report information comprises: the adjacent co-frequency cell of the former sub-district of high speed descending sharing channel that terminal records and/or adjacent different frequency cell signal quality.
As a further improvement on the present invention, described step (2) is specially:
(21A) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up the Radio Link that carries high-speed shared resource at Target cell;
(22A) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure.
As a further improvement on the present invention, described step (2) is specially:
(21B) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up Radio Link at Target cell;
(22B) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure;
(23B) in the moment of radio network controller appointment, target node b carries high-speed shared resource by synchronized radio link reconfiguration procedure on the Radio Link of Target cell.
As a further improvement on the present invention, described step (2) is specially:
(21C) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up Radio Link at Target cell;
(22C) in the moment of radio network controller appointment, target node b carries high-speed shared resource by synchronized radio link reconfiguration procedure on the Radio Link of Target cell;
(23C) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure.
As a further improvement on the present invention, described step (3) is specially:
(31) portable terminal switches to the high speed descending sharing channel Target cell of target node b in the moment of radio network controller appointment from the former sub-district of the high speed descending sharing channel of origin node B by physical channel reconfiguration course or transmission channel reconfiguration course.
As a further improvement on the present invention, also comprise after the described step (3):
(4) radio network controller is by the Radio Link of the former sub-district of Radio Link delete procedure order origin node B deletion high speed descending sharing channel.
As a further improvement on the present invention, described step (1) is preceding also comprises:
(A) terminal has been set up radio bearer in the former sub-district of high speed descending sharing channel, and has set up the high speed descending sharing channel Radio Link, and terminal is in the dedicated mode state.
As a further improvement on the present invention, the moment of described radio network controller appointment is: radio network controller sends to the Connection Frame Number of the appointment that comprises in Node B or the mobile terminal message, wherein, includes activationary time in the described Connection Frame Number.
After adopting above-mentioned method, by determining Target cell, and after Target cell is set up Radio Link carrying high-speed shared resource, portable terminal can be finished switching under the control of radio network controller, reached the switching of portable terminal HS-DSCH minizone under different Node B control, and existing protocol has been done well to replenish.
Description of drawings
Fig. 1 is the schematic diagram that UE sets up radio bearer in the prior art in resident current area;
Fig. 2 is the flow chart that embodiment is switched in the HS-DSCH minizone of the present invention in different nodes B;
Fig. 3 is the flow chart that another embodiment is switched in the HS-DSCH minizone of the present invention in different nodes B.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, set up the schematic diagram of radio bearer at persistent district for terminal.
(101) terminal sends radio bearer to radio network controller and sets up request message;
(102) radio network controller sends Radio Link to Node B and sets up request message;
(103) Node B returns to the foundation of radio network controller Radio Link and finishes message;
(104) radio network controller returns to terminal radio bearer foundation and finishes message.
A UE resides in a HS-DSCH sub-district, and has been assigned with high-speed shared resource, and this moment, UE was in CELL_DCH (private resource) state.When the channel quality of UE descends (as: arrival cell boarder) when arriving the threshold value of certain setting, UE is by the relevant information of measurement report notice RNC current area, RNC is provided with a threshold value for the signal quality of this UE in advance, when the signal quality of UE descends and surpassed this set point, UE can trigger dependent event, to the RNC reporting measurement reports, after RNC receives the measurement report of UE, think the current place of UE the sub-district discomfort be combined into this UE and continue to provide and served, RNC thinks that UE has entered the switch area.At this moment, RNC sends to UE and measures control request message, require UE to measure the signal quality of neighbor cell, comprise several neighbor cell lists (may comprise adjacent co-frequency cell tabulation and adjacent alien frequencies cell list) in this message, RNC will be according to the UE feedback measurement report, and which sub-district decision UE switches to.
As shown in Figure 2, the embodiments of the invention flow process may further comprise the steps:
(201) UE and RNC set up process by radio bearer, set up radio bearer in former sub-district, and have set up a HS-PDSCH Radio Link;
(202) RNC sends to UE and measures control messages, comprise 1g incident (" Change of best cell ") and/or 2a incident (" Change of best frequency ") in the message, require UE to report the measurement result of adjacent co-frequency cell and/or adjacent alien-frequency district;
(203) UE sends measurement report to RNC, comprises the measurement result of 1g incident and/or 2a incident, reports the signal quality of adjacent co-frequency cell and/or adjacent alien-frequency district; RNC determines that one is the Target cell that UE switches with frequency or alien frequencies HS-DSCH sub-district, and Target cell belongs to different Node B with former sub-district, i.e. direct-cut operation between the Inter Node B HS-DSCH sub-district;
The switching of beginning Inter Node B HS-DSCH minizone;
(204) setting up process by Radio Link, is the moment of target Node B appointment at RNC, and target Node B sets up a wireless links at Target cell.High-speed shared resource still only is carried on the Radio Link of former sub-district;
204a) RNC sends Radio Link to target Node B and sets up request message (Radio Link setup requestmessage);
204b) target Node B sets up to RNC response Radio Link and finishes message (Radio Link setup completemessage);
(205) by synchronized radio link reconfiguration procedure, Node B deletes the high-speed shared resource on the Radio Link of former sub-district in the moment of RNC appointment;
205a) RNC → former Node B sends radio link reconfiguration and prepares message (Radio Link reconfigurationprepare message), and RNC indication Node B deletes high-speed shared resource on the Radio Link of former sub-district;
205b) former Node B → RNC returns the ready message of radio link reconfiguration (Radio L ink reconfiguration readymessage);
205c) RNC → former Node B sends radio link reconfiguration and submits message (Radio Link reconfigurationCommit message) to, and Node B deletes the high-speed shared resource of carrying on the Radio Link of former sub-district in the moment of RNC appointment;
(206) by synchronized radio link reconfiguration procedure, Node B carries high-speed shared resource in the moment of RNC appointment on the Radio Link of Target cell;
206a) RNC → target Node B sends radio link reconfiguration and prepares message (Radio Link reconfigurationprepare message), and RNC indication Node B carries high-speed shared resource on the Radio Link of Target cell;
206b) target Node B → RNC returns the ready message of radio link reconfiguration (Radio L ink reconfigurationready message);
206c) RNC → target Node B sends radio link reconfiguration and submits message (Radio Link reconfigurationCommit message) to, Node B the RNC appointment the time be engraved on the Target cell Radio Link and carry high-speed shared resource;
Wherein, about step (205) and (206), also available first step (206) back step (205) promptly earlier in the Radio Link carrying high-speed shared resource of the Target cell of target Node B, is deleted high-speed shared resource then on the Radio Link in the former sub-district of former Node B;
(207) RNC sends physical channel reconfiguration request message/transmission channel reconfiguration request message to UE, comprises the wireless link information of target HS-DSCH sub-district in this message;
(208) MAC-hs of UE (handling the functional entity of HS-DSCH among the Node B, the access control of MAC:media access control medium) entity need restart; The UE deletion is set up Radio Link and has been carried high-speed shared resource in target HS-DSCH sub-district simultaneously at the Radio Link of former HS-DSCH sub-district, and the success back is returned physical channel to RNC and reshuffled the message that the message/transfer channel of success is reshuffled success;
Above-mentioned (207) and (208) are by physical channel reconfiguration course or transmission channel reconfiguration course, and RNC order UE switches to Target cell in the moment of appointment.Particularly, UE can be according to the parameter information of RNC configuration, disconnects and the Radio Link of former sub-district, and sets up Radio Link with Target cell;
(209) by Radio Link delete procedure (Radio Link Deletion procedure), RNC orders the Radio Link of former Node B deletion in former HS-DSCH sub-district.
209a) RNC sends Radio Link deletion request message (Radio Link Deletion requestmessage) to former Node B;
209b) former Node B sends Radio Link deletion response message (Radio Link Deletion responsemessage) to RNC.
Wherein, described RNC is the moment of Node B or UE appointment, is meant that RNC sends to the CFN value (connect frame number Connection Frame Number, each CFN value unique value in the TD-SCDMA system) that comprises an appointment in the message of Node B and UE.
As shown in Figure 3, the another embodiment of the present invention flow process may further comprise the steps:
(301) UE and RNC set up process by radio bearer, set up radio bearer in former sub-district, and have set up a HS-PDSCH Radio Link;
(302) RNC sends to UE and measures control messages, comprise 1g incident (" Change of best cell ") and/or 2a incident (" Change of best frequency ") in the message, require UE to report the measurement result of adjacent co-frequency cell and/or adjacent alien-frequency district;
(303) UE sends measurement report to RNC, comprises the measurement result of 1g incident and/or 2a incident, reports the signal quality of adjacent co-frequency cell and/or adjacent alien-frequency district; RNC determines that one is the Target cell that UE switches with frequency or alien frequencies HS-DSCH sub-district, and Target cell belongs to different Node B with former sub-district, i.e. direct-cut operation between the Inter Node B HS-DSCH sub-district;
The switching of beginning Inter Node B HS-DSCH minizone;
(304) set up process by Radio Link, at RNC is the moment of target Node B appointment, target Node B sets up a wireless links at Target cell, requires target Node B at the newly-built wireless links of Target cell, and requires to carry high-speed shared resource on this Radio Link;
304a) RNC sends Radio Link to target Node B and sets up request message (Radio Link setup requestmessage),, require target Node B at the newly-built wireless links of Target cell, and require to carry high-speed shared resource on this Radio Link;
304b) target Node B sets up to RNC response Radio Link and finishes message (Radio Link setup completemessage), and target Node B has carried a wireless links at Target cell, and carries high-speed shared resource on this Radio Link;
(305) by synchronized radio link reconfiguration procedure, Node B deletes the high-speed shared resource on the Radio Link of former sub-district in the moment of RNC appointment;
305a) RNC → former Node B sends radio link reconfiguration and prepares message (Radio Link reconfigurationprepare message), and RNC indication Node B deletes high-speed shared resource on the Radio Link of former sub-district;
305b) former Node B → RNC returns the ready message of radio link reconfiguration (Radio L ink reconfigurationready message);
305c) RNC → former Node B sends radio link reconfiguration and submits message (Radio Link reconfigurationCommit message) to, and Node B deletes the high-speed shared resource of carrying on the Radio Link of former sub-district in the moment of RNC appointment;
(306) RNC sends physical channel reconfiguration request message/transmission channel reconfiguration request message to UE, comprises the wireless link information of target HS-DSCH sub-district in this message;
(307) MAC-hs of UE (handling the functional entity of HS-DSCH among the Node B, the access control of MAC:media access control medium) entity need restart; The UE deletion is set up Radio Link and has been carried high-speed shared resource in target HS-DSCH sub-district simultaneously at the Radio Link of former HS-DSCH sub-district, and the success back is returned physical channel to RNC and reshuffled the message that the message/transfer channel of success is reshuffled success;
Above-mentioned (306) and (307) are by physical channel reconfiguration course or transmission channel reconfiguration course, and RNC order UE switches to Target cell in the moment of appointment.Particularly, UE can be according to the parameter information of RNC configuration, disconnects and the Radio Link of former sub-district, and sets up Radio Link with Target cell;
(308) by Radio Link delete procedure (Radio Link Deletion procedure), RNC orders the Radio Link of former Node B deletion in former HS-DSCH sub-district.
308a) RNC sends Radio Link deletion request message (Radio Link Deletion requestmessage) to former Node B;
308b) former Node B sends Radio Link deletion response message (Radio Link Deletion responsemessage) to RNC.
Wherein, described RNC is the moment of Node B or UE appointment, is meant that RNC sends to the CFN value (connect frame number Connection Frame Number, each CFN value unique value in the TD-SCDMA system) that comprises an appointment in the message of Node B and UE.
The present invention is by determining Target cell, and after Target cell is set up Radio Link carrying high-speed shared resource, portable terminal can be finished switching under the control of radio network controller, reached the switching of portable terminal HS-DSCH minizone under different Node B control, and existing protocol has been done well to replenish.
Claims (5)
1. the implementation method switched of a high speed descending sharing channel minizone is characterized in that this method is applied to TD-SCDMA system TD-SCDMA, may further comprise the steps:
(1) radio network controller is determined the high speed descending sharing channel Target cell in the target node b that portable terminal will switch; Described step (1) is specially: (11) radio network controller sends measuring control information to portable terminal; Described measuring control information comprises: require the adjacent co-frequency cell of the former sub-district of terminal to report high speed descending sharing channel and/or the information of adjacent different frequency cell signal quality; (12) after portable terminal is received this measuring control information, send measurement report information to radio network controller; (13) radio network controller is determined the high speed descending sharing channel Target cell according to this measurement report information; Wherein, described Target cell and described former sub-district are on different Node B;
(2) target node b is set up the Radio Link of carrying high-speed shared resource on the high speed descending sharing channel Target cell; Described step (2) is specially:
(21A) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up the Radio Link that carries high-speed shared resource at Target cell;
(22A) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure;
Perhaps, described step (2) is specially:
(21B) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up Radio Link at Target cell;
(22B) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure;
(23B) in the moment of radio network controller appointment, target node b carries high-speed shared resource by synchronized radio link reconfiguration procedure on the Radio Link of Target cell;
Perhaps, described step (2) is specially:
(21C) in the moment of radio network controller appointment, target node b is set up process by Radio Link and is set up Radio Link at Target cell;
(22C) in the moment of radio network controller appointment, target node b carries high-speed shared resource by synchronized radio link reconfiguration procedure on the Radio Link of Target cell;
(23C) in the moment of radio network controller appointment, origin node B deletes high-speed shared resource on the Radio Link of former sub-district by synchronized radio link reconfiguration procedure;
(3) portable terminal switches to the high speed descending sharing channel Target cell of target node b in the moment of radio network controller appointment from the former sub-district of the high speed descending sharing channel of origin node B by physical channel reconfiguration course or transmission channel reconfiguration course.
2. the implementation method switched of 1 described high speed descending sharing channel minizone as requested, it is characterized in that described measurement report information comprises: the adjacent co-frequency cell of the former sub-district of high speed descending sharing channel that terminal records and/or adjacent different frequency cell signal quality.
3. according to the implementation method of the described high speed descending sharing channel of claim 1 minizone switching, it is characterized in that described step also comprises after (3):
(4) radio network controller is by the Radio Link of the former sub-district of Radio Link delete procedure order origin node B deletion high speed descending sharing channel.
4. according to the implementation method of the described high speed descending sharing channel of claim 1 minizone switching, it is characterized in that described step (1) is preceding also to be comprised:
(A) terminal has been set up radio bearer in the former sub-district of high speed descending sharing channel, and has set up the high speed descending sharing channel Radio Link, and terminal is in the dedicated mode state.
5. the implementation method of switching according to the described high speed descending sharing channel of claim 1 minizone, it is characterized in that, the moment of described radio network controller appointment is: radio network controller sends to the Connection Frame Number of the appointment that comprises in Node B or the mobile terminal message, wherein, include activationary time in the described Connection Frame Number.
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| CN200610104195A CN101119586B (en) | 2006-08-04 | 2006-08-04 | Method of implementing high speed downlink sharing channel inter-cell handoff |
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| CN101959265B (en) * | 2009-07-16 | 2013-01-16 | 电信科学技术研究院 | Relay switching method, system and equipment |
| CN102165808A (en) * | 2009-11-10 | 2011-08-24 | 高通股份有限公司 | Method and apparatus to support HSDPA ACK/CQI operation during baton handover in TD-SCDMA systems |
| CN102348218B (en) * | 2010-08-02 | 2016-04-20 | 电信科学技术研究院 | The method of controlling terminal carrier channel under multiple carrier systems and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1735271A (en) * | 2005-06-30 | 2006-02-15 | 凯明信息科技股份有限公司 | Hard handoff method and device and TD-SCDMA system using same method and device |
| CN1747598A (en) * | 2005-08-12 | 2006-03-15 | 凯明信息科技股份有限公司 | Hard switch method and apparatus and TD-SCDMA system therewith |
| CN1802004A (en) * | 2005-01-07 | 2006-07-12 | 华为技术有限公司 | Switching control method for rapid physical downlink shared channel service cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1802004A (en) * | 2005-01-07 | 2006-07-12 | 华为技术有限公司 | Switching control method for rapid physical downlink shared channel service cell |
| CN1735271A (en) * | 2005-06-30 | 2006-02-15 | 凯明信息科技股份有限公司 | Hard handoff method and device and TD-SCDMA system using same method and device |
| CN1747598A (en) * | 2005-08-12 | 2006-03-15 | 凯明信息科技股份有限公司 | Hard switch method and apparatus and TD-SCDMA system therewith |
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