CN101087447A - A method for user terminal to switch across zones in cluster system - Google Patents
A method for user terminal to switch across zones in cluster system Download PDFInfo
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- CN101087447A CN101087447A CN 200610083136 CN200610083136A CN101087447A CN 101087447 A CN101087447 A CN 101087447A CN 200610083136 CN200610083136 CN 200610083136 CN 200610083136 A CN200610083136 A CN 200610083136A CN 101087447 A CN101087447 A CN 101087447A
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Abstract
A group user end exceeding switching method includes: group user end which is in state of receiving operation detects signal of destination area, judges whether it fulfills switching trigger condition, if it is, switching request information is sent; current area reports the switching request information received, network side obtains destination area identification and ensures whether the destination area possesses channel of the group; if it is, informs user terminal which applies for switching; if it is not, new group call channel will be built in the destination area and activated, then informs user terminal the information of destination area via current area; the user terminal is switched to corresponding channel of destination area and sends affirmance message. The invention can lead user terminal which is in state of receiving operation to accomplish exceeding switching under condition that wireless resource is saved effectively, network side can manage user terminal position precisely.
Description
Technical field
The present invention relates to handover switching method of user terminal in the group system of the 3rd generation (3G) mobile communication, more particularly, the present invention relates to a kind of method based on user terminal handover in the group system of TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA inserts) technology.
Background technology
Wireless cluster communication system hereinafter to be referred as group system, is a kind of mobile communication system that is mainly used in command scheduling, is widely used in fields such as government bodies, energy traffic, airport harbour, industrial and mining enterprises.Group system provides group service (VGCS, Voice Group CallService) for cluster user.VGCS requires group system to set up calling in the coverage of affiliated cluster group for cluster user, and when group calling was initiated, a group-calling channel was set up in this group calling of respectively doing for oneself of each related cell, and the cluster user of this cluster group is shared group-calling channel.Along with the development of 3G mobile communication system, also obtained fast development based on the group system of 3G mobile communication system.
Group system of the present invention is based on the group system of TD-SCDMA technology, and the cluster user terminal is a wireless terminal.Therefore, in the trunking communication process, moving of cluster user terminal may be crossed over different sub-districts, needs corresponding handoff technique to address this problem.At present, domestic main mobile communication system has GOTA (the Global Open Trunking Architecture based on CDMA2000, based on open cluster architecture) system, based on GSM (Global System for MobileCommunications, global system for mobile communications) GT800 system, but which kind of system no matter, one of core technology is exactly a user terminal handover problem.At present, the switching mode of putting down in writing in the prior art data all is based on the system of the paging mode of CDMA2000, and is little with the switching difference in the public network.And based on the GT800 system of GSM, its switching mode is according to the difference of channel access way and different, particularly be in the user terminal that receives under the service condition, the mode of handover can change to some extent, can not effectively save wireless network resource, network side can not manage user terminal location exactly simultaneously.
TD-SCDMA technology is a kind of emerging radio network technique that grows up along with the development of 3G mobile communication system, at present, does not have data to propose in the group system based on TD-SCDMA technology as yet, the method for handover when cluster user is crossed over the sub-district.For the access technology of eating dishes without rice or wine of group system, one of core technology is exactly a user terminal handover problem, and the method for handover is relevant with the access technology of eating dishes without rice or wine.Fig. 1 is based on the group system code channel distribution of TD-SCDMA technology and eats dishes without rice or wine to insert schematic diagram.As can be seen from Figure 1, set up the initial stage at cluster multi call, network side is initiated group calling to all sub-districts of cluster multi call, sets up corresponding up-downgoing group calling code channel, simultaneously, and network side activate counter Timer1; As user terminal (User Edge, hereinafter to be referred as UE) enter cluster multi call after, then adopt the mode of seizing, from Uplink Shared Channel (Random Access Channel, also claim RACH) send and to enter the message of group calling to network side, after network side is received this message, will keep the up-downgoing code channel of respective cell for this cluster multi call; After setting up group calling a period of time, this moment, Timer1 reached the value of setting, and then network side checks that the UE of group call cell inserts situation, if certain sub-district neither one UE feedback inserts prompting, then think this sub-district not this cluster multi call UE exist, the code channel resource of then this being eated dishes without rice or wine discharges.Again become the activation sub-district for fear of this sub-district, network side keeps Iub (radio network controller (Radio Network Controller for this cluster multi call, hereinafter to be referred as RNC) and Node B between logic interfacing) interface is in linking status, the code channel resource of eating dishes without rice or wine simultaneously keeps a certain proportion of redundancy.
As seen, very flexible based on the group system of TD-SCDMA to the management of interface-free resources, the code channel of can the dynamic management cluster multi call eating dishes without rice or wine.And CDMA 2000 and GSM are all inequality to the management and the TD-SCDMA of interface-free resources, and be therefore different based on the changing method under two kinds of patterns of changing method and other of TD-SCDMA.In group system based on TD-SCDMA, the user terminal that receives under the service condition has only descending group service channel effective, when user terminal need report its measurement result, so that network provides switchable resource, then need reciprocal process, network side carries out rational resource allocation and guiding switching flow.
Summary of the invention
The technical problem that the present invention solves provides a kind of method of cluster user terminal handover, with effective save radio resources, guiding is in the user terminal that receives service condition and finishes handover reliably, and network side can manage user terminal location exactly simultaneously.
For addressing the above problem, the invention provides a kind of method of cluster user terminal handover, the cluster user terminal moves to the process of Target cell from current area, being in the UE that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, UE sends handoff request information to current area, and this method is further comprising the steps of:
A. after current area is received handoff request information, report this information, network side obtains confirming behind the Target Cell Identifier whether Target cell has the code channel of this cluster multi call, if Target cell has the code channel of this cluster multi call, and execution in step b, otherwise, execution in step c;
B. network side is directly by current area, with the UE that the code channel information notice application of Target cell is switched, execution in step d;
C. network side is set up new cluster multi call code channel and activation at this Target cell, afterwards by current area, with the UE that the code channel information notice application of Target cell is switched, execution in step d;
D. this UE switches to according to code channel information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
Wherein, handover triggering condition is that the Target cell common channel signal is stronger than current area common channel signal.
Wherein, it is by downlink traffic channel or DSCH Downlink Shared Channel that the code channel information of Target cell is notified to the UE that application switches, and adopts multiplexed mode to finish.
Wherein, UE finishes by Uplink Shared Channel (RACH) to current area transmission handoff request information.
Wherein, all comprise the UE sign that application is switched in handoff request information, code channel information and the handover success confirmation.
Wherein, all comprise UE sign, Target Cell Identifier, current area sign and the group identification that application is switched in handoff request information, code channel information and the handover success confirmation.
Wherein, the handover success confirmation is sent to this Target cell and cluster management server, by cluster management server UE is carried out location management.
When the UE of application switching switches between the different districts under the same Node B (Node B) in wireless network, the invention provides a kind of method of cluster user terminal handover, the cluster user terminal moves to the process of Target cell from current area, being in the cluster user terminal (UE) that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, UE sends handoff request information to current area, and this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B, Node B has the code channel information of this Target cell, and Node B obtains confirming whether the code channel of this Target cell activates behind the Target Cell Identifier; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. directly by current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel, afterwards by current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this UE switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
Wherein, handover triggering condition is that the Target cell common channel signal is stronger than current area common channel signal.
Wherein, be by downlink traffic channel or DSCH Downlink Shared Channel with the UE that allows handover information and guidance information to be notified to the application switching, adopt multiplexed mode to finish.
Wherein, UE finishes by Uplink Shared Channel (RACH) to current area transmission handoff request information.
Wherein, all comprise the UE sign that application is switched in handoff request information, permission handover information and guidance information and the handover success confirmation.
Wherein, comprise UE sign, Target Cell Identifier and the group identification that application is switched in the handover success confirmation.
Wherein, the handover success confirmation is sent to Node B, and Node confirms that the code channel resource of modifying target sub-district, back distributes, and UE is carried out location management.
UE same RNC (Radio NetworkController in wireless network when the application switching, radio network controller), when switching between the different districts under different N ode B1 and the Node B1, the invention provides a kind of method of cluster user terminal handover, the cluster user terminal moves to the process of Target cell from current area, being in the cluster user terminal (UE) that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, UE sends handoff request information to current area, and this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B1, Node B1 reports to RNC with handoff request information, and RNC confirms simultaneously by the code channel information that the Node B2 of correspondence determines Target cell whether the code channel of this Target cell activates; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. by Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel by Node B2, afterwards by RNC, Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this UE switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
Wherein, handover triggering condition is that the Target cell common channel signal is stronger than current area common channel signal.
Wherein, be by downlink traffic channel or DSCH Downlink Shared Channel with the UE that allows handover information and guidance information to be notified to the application switching, adopt multiplexed mode to finish.
Wherein, UE finishes by Uplink Shared Channel (RACH) to current area transmission handoff request information.
Wherein, all comprise the UE sign that application is switched in handoff request information, permission handover information and guidance information and the handover success confirmation.
Wherein, comprise UE sign, Target Cell Identifier and the group identification that application is switched in the handover success confirmation.
Wherein, the handover success confirmation is sent to RNC, and RNC confirms that the code channel resource of notice Node B2 modifying target sub-district, back distributes, and UE is carried out location management.
When UE that application is switched switches between the different districts under different RNCs 1 and the RNC2 in wireless network, the invention provides a kind of method of cluster user terminal handover, the cluster user terminal moves to the process of Target cell from current area, being in the cluster user terminal (UE) that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, UE sends handoff request information to current area, and this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B1, Node B1 reports to RNC 1 with handoff request information, RNC 1 reports trunking dispatch server with handoff request information, the corresponding RNC2 of inquiry from trunking dispatch server, determine the code channel information of Target cell by the Node B2 under the RNC2, confirm simultaneously whether the code channel of this Target cell activates; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. by RNC1, Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel by RNC2 and Node B2, afterwards by trunking dispatch server, RNC1, Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this UE switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
Wherein, handover triggering condition is that the Target cell common channel signal is stronger than current area common channel signal.
Wherein, be by downlink traffic channel or DSCH Downlink Shared Channel with the UE that allows handover information and guidance information to be notified to the application switching, adopt multiplexed mode to finish.
Wherein, UE finishes by Uplink Shared Channel (RACH) to current area transmission handoff request information.
Wherein, all comprise the UE sign that application is switched in handoff request information, permission handover information and guidance information and the handover success confirmation.
Wherein, comprise UE sign, Target Cell Identifier and the group identification that application is switched in the handover success confirmation.
Wherein, the handover success confirmation is to send to Node B2, and finally is sent to trunking dispatch server by RNC2, after being confirmed by trunking dispatch server UE is carried out location management.
Compared with prior art, the UE that the characteristics of this switching mode are to apply for switching obtains the code channel resource information of Target cell by mutual with network side.In order to economize on resources, some does not have the sub-district of cluster user can be regardless of the up-downgoing Traffic Channel that pairing is answered, and therefore, the UE terminal of preparing to switch need be initiated request to network side, judge by network side whether Target cell supports this cluster multi call, and whether distribute group calling up-downgoing code channel.Therefore, the present invention has following beneficial effect: because whether network side can be according to cluster multi call UE in the sub-district, determine the sub-district code channel resource allocation in the cluster multi call zone, if some sub-district does not have cluster multi call UE, then discharge the interface-free resources of these sub-districts, thereby reach dynamic adjustment code channel resource, effectively save interface-free resources; Simultaneously, be by carrying out alternately with network side, switch behind the code channel resource of affirmation Target cell owing to be in when the UE of accepting state switches, the probability of handover success is bigger; And, because when being in the UE of accepting state and switching and network side carry out being convenient to network side and carrying out location management alternately for the UE that is in accepting state.
Therefore, the present invention can be under the situation of effective save radio resources, and guiding is in the user terminal that receives service condition and finishes handover reliably, and network side can manage user terminal location exactly simultaneously.
Description of drawings
Fig. 1 is based on the group system code channel distribution of TD-SCDMA technology and eats dishes without rice or wine to insert schematic diagram;
Fig. 2 is the flow chart that user terminal switches at different districts;
Fig. 3 is the user terminal flow chart that different districts switches under same Node B;
Fig. 4 is the flow chart of user terminal in same RNC, different N ode B 1 and 2 times different districts switchings of Node B;
Fig. 5 is the user terminal flow chart that different districts switches under different RNCs 1 and RNC2.
Embodiment
The method of cluster user terminal handover of the present invention is based on the method for user terminal handover in the group system of 3G mobile communication system.In order to economize on resources, some does not have the sub-district of cluster user can be regardless of the up-downgoing Traffic Channel that pairing is answered, and therefore, the user terminal of preparing to switch need be initiated request to network side, judge by network side whether Target cell supports this cluster multi call, and whether distribute group calling up-downgoing code channel.Confirm Target cell when network side and support this cluster multi call, and activated the group calling up-downgoing code channel that distributes for this user terminal, then inform the code channel position of this user terminal Target cell correspondence by signaling channel.User terminal is behind the position that obtains the corresponding code channel of Target cell, behind a complete TTI, be directly switch to and continue to receive professional on the corresponding code channel of Target cell, send handover success information by Uplink Shared Channel to new sub-district simultaneously, be convenient to the mobile management of user terminal.For making purpose of the present invention, technical scheme and technique effect clearer, below by specific embodiment and with reference to accompanying drawing, the present invention is described in detail.
With reference to figure 2, Fig. 2 is the flow chart that user terminal switches at different districts.As shown in Figure 2, UE is being in the cluster user terminal that receives service condition, and this terminal moves to Target cell from the current sub-district of group-calling channel that provides, and handover procedure is as follows:
At first, UE is by the broadcast channel of cycle detection current area and Target cell, the value that compares two channels, when reaching handoff threshold, for example the Target cell common channel signal is stronger than current area common channel signal, then by Uplink Shared Channel, for example RACH, send handoff request information to current area, comprise information such as Target Cell Identifier in the handoff request information.
After current area is received handoff request, report this information, after the handoff request information that the high-rise UE of reception of network side sends, read Target Cell Identifier, divide the different situations inquiry corresponding Target cell afterwards, confirm whether corresponding Target cell has the code channel of this cluster multi call, if do not have, then set up new cluster multi call code channel and activation at this Target cell, network side is notified the code channel information of Target cell activation the UE of application switching by current area afterwards; If Target cell has had the code channel of the activation of this cluster multi call, then network side need not be redistributed and activate again, directly by current area, notifies the UE that applies for switching with the code channel information that Target cell activates.
The Target cell code channel information is notified to the UE that application is switched, for example, can passes through downlink traffic channel or DSCH Downlink Shared Channel, adopt multiplexed mode to finish.No matter adopt which kind of mode, need to carry the identifier that UE is switched in application in the signaling.After UE switched to Target cell, by Uplink Shared Channel, location management was carried out in the sub-district new as the RACH channel notification, and notice cluster management server.Wherein, all comprise UE sign, Target Cell Identifier, current area sign and the group identification that application is switched in handoff request information, code channel information and the handover success confirmation.
Divide different situations because UE switches, mainly contain UE and switch at different districts switching, the UE different districts under different RNCs under same RNC, different N ode B of different districts switching, UE under the same Node B.Therefore, above described with switch relevant network side and may only comprise a Node B, perhaps also comprise a RNC and another Node B, perhaps also comprise a cluster management server.
Illustrate current area and Target cell below respectively under same Node B, under same RNC, different N ode B, and under different RNCs, the handover case of UE.
Fig. 3 is the user terminal flow chart that different districts switches under same Node B.As shown in Figure 3, UE is being in the cluster user terminal that receives service condition, and this terminal moves to Target cell from the current sub-district of group-calling channel that provides, and current area and Target cell belong to a network node Node B.The handover procedure of UE is as follows:
UE is in the Target cell moving process, the signal of current area more and more a little less than, and the signal of Target cell is more and more stronger, be in the UE period measurement Target cell of reception service condition and the signal strength signal intensity of current area, judge whether to satisfy handover triggering condition, for example the Target cell common channel signal then satisfies switching condition by force than current area common channel signal, and UE sends handoff request information to current area.Comprise current area sign, Target Cell Identifier, group identification and UE sign in the handoff request information.
After current area is received handoff request information, report this information to Node B, after Node B receives this handoff request information, judge whether to switch for the sub-district under the identical Node B, if the switching between the different districts under the identical Node B, then this Node B has the code channel information of Target cell, and does not need to report RNC and trunking dispatch server, switching the specifying referring to Fig. 4 embodiment under the identical Node B between the different districts.
Node B confirms whether the code channel of this Target cell activates after reading Target Cell Identifier; If the code channel of Target cell is in state of activation, directly by current area, with the UE that allows the application of handover information and guidance information notice to switch; If the code channel of Target cell is not in state of activation, then activate this Target cell code channel, afterwards by current area, with the UE that allows the application of handover information and guidance information notice to switch, for example, adopt multiplexed mode to finish notice by downlink traffic channel or DSCH Downlink Shared Channel.
This UE switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.The handover success confirmation comprises that UE sign and Target cell are the sign of sub-district, present place.
Wherein, the handover success confirmation is sent to Node B, and Node confirms that the code channel resource of modifying target sub-district, back distributes, and carries out location management to UE simultaneously.
Fig. 4 is the user terminal flow chart that different districts switches under same RNC, different N ode B1 and Node B2.As shown in Figure 4, UE is being in the cluster user terminal that receives service condition, this terminal moves to Target cell from the current sub-district of group-calling channel that provides, and current area and Target cell belong to the different districts under the heterogeneous networks node Node B1 and Node B2 among the RNC respectively.The handover procedure of UE is as follows:
UE is in the Target cell moving process, the signal of current area more and more a little less than, and the signal of Target cell is more and more stronger, be in the UE period measurement Target cell of reception service condition and the signal strength signal intensity of current area, judge whether to satisfy handover triggering condition, for example the Target cell common channel signal then satisfies switching condition by force than current area common channel signal, and UE sends handoff request information to current area.Comprise current area sign, Target Cell Identifier, group identification and UE sign in the handoff request information.
After current area is received handoff request information, report this information to Node B1, after Node B 1 receives this handoff request information, judge whether to switch for the sub-district under the identical Node B1, if the switching between the different districts under the identical Node B1, then handoff procedure is referring to embodiment illustrated in fig. 3 specifying; Switching under the identical Node B1 between the different districts, then this Node B1 reports to RNC with handoff request information.Because be the switching between the different districts under the same RNC, therefore, RNC does not need this information is reported to trunking dispatch server after receiving this handoff request information.RNC by the code channel information that the Node B2 of correspondence determines Target cell, confirms whether the code channel of this Target cell activates by the Target Cell Identifier in the handoff request information and group identification simultaneously; If the code channel of Target cell is in state of activation, then by Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch; If the code channel of Target cell is not in state of activation, then activate the Target cell code channel by Node B2.
After activating the Target cell code channel, by RNC, Node B1 and current area, with the UE that allows the application of handover information and guidance information notice to switch.
Then, UE switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.The handover success confirmation comprises the UE sign, and Target Cell Identifier is the sign of sub-district, present place.
Wherein, the handover success confirmation is sent to Node B1, and Node B1 reports to RNC with this information again, and RNC confirms to notify Node B2 after this information, and the code channel resource of modifying target sub-district distributes simultaneously, and UE is carried out location management.
Fig. 5 is the user terminal flow chart that different districts switches under different RNCs 1 and RNC2.As shown in Figure 5, UE is being in the cluster user terminal that receives service condition, and this terminal moves to Target cell from the current sub-district of group-calling channel that provides, and current area and Target cell belong to the different districts under different RNCs 1 and the RNC2 respectively.The handover procedure of UE is as follows:
UE is in the process that Target cell moves, the signal of current area more and more a little less than, and the signal of Target cell is more and more stronger, be in the UE period measurement Target cell of reception service condition and the signal strength signal intensity of current area, judge whether to satisfy handover triggering condition, for example the Target cell common channel signal then satisfies switching condition by force than current area common channel signal, and UE sends handoff request information to current area.Can comprise current area sign, Target Cell Identifier, group identification and UE sign in the handoff request information.
After current area is received handoff request information, report this information to Node B1, after Node B1 receives this handoff request information, judge whether to switch for the sub-district under the identical Node B1, if the switching between the different districts under the identical Node B1, then handoff procedure is referring to embodiment illustrated in fig. 3 specifying; Switching between the sub-district under the identical Node B1, then this Node B1 reports to RNC1 with handoff request information.RNC1 judges whether to switch into the sub-district under the identical RNC1 after receiving this information, if, then handoff procedure is referring to embodiment illustrated in fig. 4 specifying, if not, then RNC1 needs this information is reported to trunking dispatch server after receiving this handoff request information, the RNC2 of the Serving cell list query correspondence of preserving from trunking dispatch server.
Judge by the Node B2 under the RNC2 whether Target cell exists the code channel resource of this cluster multi call, if there is no, then set up new code channel resource and activation for this cluster multi call.
Trunking dispatch server is carried the code channel information and the Target Cell Identifier of UE identification number, given Target cell to the information and the guidance information of RNC1 feedback permission switching in the information that allows to switch.
Then, RNC1 allows handover information and guidance information for Node B1 feedback.
Subsequently, Node B1 by DSCH Downlink Shared Channel or the multiplexing signaling of DCH (DedicatedChannel, dedicated channel), issues UE with above-mentioned permission handover information and guidance information to UE.
The UE that application is switched according to guidance information, switches on the appointment code channel of Target cell after the above-mentioned information of correct identification.
UE confirm correctly to switch to Target cell instruct on the code channel after, by Uplink Shared Channel, send handover success information at Target cell to Node B2.
Because present embodiment is the switching of striding RNC, then needs the information of handover success is reported trunking dispatch server, and carries out location management by trunking dispatch server.
About reporting the information of handover success, trunking dispatch server assignment RNC or the Node B information that will stride the handover success under Node B or the identical Node B as required reports trunking dispatch server.
The above only is several preferred implementation of the present invention, does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (16)
1, a kind of method of cluster user terminal handover, the cluster user terminal moves to the process of Target cell from current area, being in the cluster user terminal that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, user terminal is initiated handoff request information to current area, it is characterized in that this method is further comprising the steps of:
A. after current area is received handoff request information, report this information, network side obtains confirming behind the Target Cell Identifier whether Target cell has the code channel of this cluster multi call, if Target cell has the code channel of this cluster multi call, and execution in step b, otherwise, execution in step c;
B. network side is directly by current area, with the user terminal that the code channel information notice application of Target cell is switched, execution in step d;
C. network side is set up new cluster multi call code channel and activation at this Target cell, afterwards by current area, with the user terminal that the code channel information notice application of Target cell is switched, execution in step d;
D. this user terminal switches to according to code channel information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
2, the method for cluster user terminal handover according to claim 1, it is characterized in that, handover triggering condition is, the Target cell common channel signal is stronger than current area common channel signal, it is by downlink traffic channel or DSCH Downlink Shared Channel that the code channel information of Target cell is notified to the user terminal that application switches, adopt multiplexed mode to finish, user terminal sends handoff request information to current area and finishes by Uplink Shared Channel.
3, the method for cluster user terminal handover according to claim 1 and 2, it is characterized in that, all comprise user terminal identification, Target Cell Identifier, current area sign and group identification that application is switched in handoff request information, code channel information and the handover success confirmation, the handover success confirmation is sent to this Target cell and cluster management server, by cluster management server user terminal is carried out location management.
4, a kind of method of cluster user terminal handover, the cluster user terminal moves to Target cell from current area, current area and Target cell are the different districts under the same node Node B in the wireless network, being in the cluster user terminal that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, user terminal sends handoff request information to current area, it is characterized in that this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B, Node B has the code channel information of this Target cell, and Node B obtains confirming whether the code channel of this Target cell activates behind the Target Cell Identifier; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. directly by current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel, afterwards by current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this user terminal switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
5, the method for cluster user terminal handover according to claim 4, it is characterized in that, handover triggering condition is, the Target cell common channel signal is stronger than current area common channel signal, with the user terminal that allows handover information and guidance information to be notified to the application switching is by downlink traffic channel or DSCH Downlink Shared Channel, adopt multiplexed mode to finish, user terminal sends handoff request information to current area and finishes by Uplink Shared Channel.
6, according to the method for claim 4 or 5 described cluster user terminal handovers, it is characterized in that, handoff request information, permission handover information and guidance information comprise the user terminal identification that application is switched, and comprise user terminal identification, Target Cell Identifier and group identification that application is switched in the handover success confirmation.
7, according to the method for claim 4 or 5 described cluster user terminal handovers, it is characterized in that the handover success confirmation is sent to Node B, Node B confirms that the code channel resource of modifying target sub-district, back distributes, and user terminal is carried out location management.
8, a kind of method of cluster user terminal handover, the cluster user terminal moves to Target cell from current area, current area and Target cell are respectively the different districts under different N ode B1 and the Node B2 under the same radio network controller in the wireless network, being in the cluster user terminal that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, user terminal sends handoff request information to current area, it is characterized in that this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B1, Node B1 reports to radio network controller with handoff request information, and radio network controller confirms simultaneously by the code channel information that the Node B2 of correspondence determines Target cell whether the code channel of this Target cell activates; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. by Node B1 and current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel by Node B2, afterwards by radio network controller, Node B1 and current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this user terminal switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
9, the method for cluster user terminal handover according to claim 8, it is characterized in that, handover triggering condition is, the Target cell common channel signal is stronger than current area common channel signal, with the user terminal that allows handover information and guidance information to be notified to the application switching is by downlink traffic channel or DSCH Downlink Shared Channel, adopt multiplexed mode to finish, user terminal sends handoff request information to current area and finishes by Uplink Shared Channel.
10, according to Claim 8 or the method for 9 described cluster user terminal handovers, it is characterized in that, handoff request information, permission handover information and guidance information comprise the user terminal identification that application is switched, and comprise user terminal identification, Target Cell Identifier and group identification in the handover success confirmation.
11, according to Claim 8 or the method for 9 described cluster user terminal handovers, it is characterized in that, the handover success confirmation is sent to radio network controller, radio network controller confirms that the code channel resource of notice Node B2 modifying target sub-district, back distributes, and user terminal is carried out location management.
12, a kind of method of cluster user terminal handover, the cluster user terminal moves to Target cell from current area, current area and Target cell are respectively the different districts under different networks controller (RNC) 1 and the radio network controller (RNC) 2 in the wireless network, being in the cluster user terminal that receives service condition detects the signal of Target cell, judge whether to satisfy handover triggering condition, if satisfy switching condition, user terminal sends handoff request information to current area, it is characterized in that this method is further comprising the steps of:
A. after current area is received handoff request information, report this information to Node B1, Node B1 reports to radio network controller (RNC) 1 with handoff request information, radio network controller (RNC) 1 reports trunking dispatch server with handoff request information, inquiry corresponding wireless network controller (RNC) 2 from trunking dispatch server, determine the code channel information of Target cell by the Node B2 under the radio network controller (RNC) 2, confirm simultaneously whether the code channel of this Target cell activates; If the code channel of Target cell is in state of activation, execution in step b, otherwise, execution in step c;
B. by radio network controller (RNC) 1, Node B1 and current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
C. activate this Target cell code channel by radio network controller (RNC) 2 and Node B2, afterwards by trunking dispatch server, radio network controller (RNC) 1, Node B1 and current area, with the user terminal that allows the application of handover information and guidance information notice to switch, execution in step d;
D. this user terminal switches to according to guidance information on the corresponding code channel of Target cell, after confirming normal the reception, by the Uplink Shared Channel transmission handover success confirmation of Target cell.
13, the method for cluster user terminal handover according to claim 12, it is characterized in that, handover triggering condition is, the Target cell common channel signal is stronger than current area common channel signal, with the user terminal that allows handover information and guidance information to be notified to the application switching is by downlink traffic channel or DSCH Downlink Shared Channel, adopt multiplexed mode to finish, user terminal sends handoff request information to current area and finishes by Uplink Shared Channel.
14, according to the method for claim 12 or 13 described cluster user terminal handovers, it is characterized in that, all comprise the user terminal identification that application is switched in handoff request information, permission handover information and guidance information and the handover success confirmation.
15, according to the method for claim 12 or 13 described cluster user terminal handovers, it is characterized in that, comprise user terminal identification, Target Cell Identifier and group identification in the handover success confirmation.
16, according to the method for claim 12 or 13 described cluster user terminal handovers, it is characterized in that, the handover success confirmation is to send to Node B2, and finally be sent to trunking dispatch server by radio network controller (RNC) 2, confirm that by trunking dispatch server the back carries out location management to user terminal.
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