CN101998543A - Switching method, system and device - Google Patents
Switching method, system and device Download PDFInfo
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- CN101998543A CN101998543A CN200910091250XA CN200910091250A CN101998543A CN 101998543 A CN101998543 A CN 101998543A CN 200910091250X A CN200910091250X A CN 200910091250XA CN 200910091250 A CN200910091250 A CN 200910091250A CN 101998543 A CN101998543 A CN 101998543A
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Abstract
The embodiment of the invention discloses a switching method, system and device. The switching method comprises the following steps of: when a terminal receives a switching command transmitted by a network side source node to switch in a no-random access mode, judging whether the effective information of a network side target node is received by the terminal in preset time; and if the terminal does not receive the effective information of the network side target node, initiating random access for switching through the terminal. According to the embodiment of the invention, under the condition of no-random switching failure, the terminal performs the switching in a random access mode, therefore, the switching reliability and the user experience feel are improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of changing method, system and device.
Background technology
LTE (Long-Term Evolution, Long Term Evolution) network architecture of system as shown in Figure 1, network side entity is by MME/S-GW (Mobility Management Entity/Serving-Gateway, mobile management entity/gateway), eNB (Evolved Node B, evolved base station) forms.Interface between eNB and eNB is an X2 interface, and the interface between MME/S-GW and eNB is the S1 interface.When UE when an eNB moves to another eNB, do not interrupt in order to make occurent business, need switch.If exist X2 to connect between eNB, can finish switching by X2 interface so; If there is not X2 interface between eNB, can finish by the S1 interface.
As shown in Figure 2, the schematic flow sheet for the handoff procedure finished by X2 interface in the prior art specifically may further comprise the steps:
(RadioResource Management, RRM) information judges that UE need switch for measurement report that sub-district under step 201, the source eNB reports based on UE and RRM.
The sub-district of sub-district under step 202, the source eNB under target eNB sends handoff request message, carries UE in the handoff request information and switches the preparation information necessary to the sub-district under the target eNB.
Wherein, above-mentioned information comprises context (UE context) information in the sub-district of UE under the eNB of source etc.
If switching the sub-district of the employed resource of UE under target eNB, step 203 goes through, sub-district under the target eNB will dispose corresponding resource for this UE so, and the sub-district under the eNB of source sends switching request response (Handover Request Acknowledge) message.
Handover request ack message comprises the sub-district of UE under target eNB when switching required parameter information, for example: the system information of subdistricts under the target eNB, heading (preamble) information when UE inserts the sub-district under target eNB at random etc.
Sub-district under step 204, the source eNB sends switching command (Handover Command) message to UE after the handover request ack message of receiving the sub-district transmission under the target eNB, indication UE switches to the sub-district under the target eNB.
Sub-district under the eNB of source is included in the handover request ack message of the sub-district transmission of sub-district under the eNB of source under the target eNB to the content of the switching command that UE sends.
In addition, the switching command that sends to UE of the sub-district under the eNB of source is the RRC that has comprised the mobility control information and connects and reshuffle (RRC Connection Reconfiguration) message.
Step 205, UE receive after the switching command, carry out with target eNB under the sub-district synchronously.
If in switching command dispensing special-purpose Random Access Channel (Random Access Channel, RACH) preamble, then use the sub-district under the uncontested access of the access process at random target eNB, if there is not the RACH preamble of dispensing special use, then uses based on competing access process at random and insert sub-district under the target eNB.
Step 206, after UE successfully inserts sub-district under the target eNB, UE sends to switch and finishes (Handover Complete) message, the switching flow of the sub-district indication UE under target eNB is finished.
The handoff completion message that the sub-district of UE under target eNB sends is RRC and connects to reshuffle and finish message.
As shown in Figure 3, be the schematic flow sheet of the handoff procedure finished by the S1 interface in the prior art.With the main distinction of X2 interface handoff procedure be, the sub-district under the eNB of source and the handoff request of the minizone under the target eNB and switching request response (switching is finished) message send need carry out transfer by MME, and detailed process repeats no more.
In the LTE system, when mobile, also need to carry out the minizone and switch in the sub-district of UE under same eNB.Switch with sub-district between above-mentioned eNB and different to be, cell-of-origin and Target cell do not need to carry out the Signalling exchange on X2 or the S1 interface.Other processes and said process are similar, that is: the cell-of-origin sends switching command to UE; UE is configured according to switching command; After finishing, configuration sends handoff completion message to Target cell.
LTE-A (LTE-Advanced, the follow-up evolution of LTE) can pass through coordinate multipoint (Coordinated multi-point in the system, CoMP) transmission and reception technique increase the covering of high data rate, improve the throughput of cell edge and/or increase throughput of system.So-called coordinate multipoint is meant that a plurality of transmission points that separate on the geographical position (are appreciated that into different districts, these sub-districts can belong to same eNB also can belong to different eNB, the network side entity that can also belong to other, as: relay) the collaborative participation to a UE (User Equipment, terminal) data transmission/reception.As shown in Figure 4, be that three sub-districts send data simultaneously to a UE.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems at least:
In the CoMP system, when adopting multi-point cooperative transmission, the realization terminal does not have the concrete mechanism of the switching of inserting and does not also determine in a plurality of sub-districts.
Summary of the invention
Embodiments of the invention provide a kind of changing method, system and device, and terminal is not had under the situation that inserts handoff failure at random, insert switching at random, have improved the reliability and the user experience sense of switching.
Embodiments of the invention provide a kind of changing method, comprising:
When terminal receives the switching command that the network side source node sends, do not have at random and insert when switching, whether described terminal judges receives the efficient message of described network side destination node in Preset Time;
Described terminal does not receive the efficient message of described network side destination node in Preset Time, then described terminal is initiated to insert at random to switch.
The described terminal of working as receives the switching command that the network side source node sends, and does not have to insert at random to switch to comprise:
Described terminal inserts indication message at random according to the nothing of carrying in the described switching command and judges that not having access at random switches; Or
Described terminal judges that according to other information not having access at random switches.
Described terminal does not have before the access switching at random, and also comprise: described terminal receives the described Preset Time that described network side source node sends, and specifically comprises:
Described terminal receives the described Preset Time that described network side source node sends, and described Preset Time is carried at and connects in the reconfiguration message; Or
The described network side destination node that described terminal receives described network side source node forwarding is the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
Whether described terminal judges receives before the efficient message of described network side destination node in Preset Time, comprising:
Described terminal is configured according to described Preset Time, and carries out timing when described configuration finishes; Or
Described terminal is configured according to described Preset Time, and carries out timing in described terminal when described network side destination node sends article one upstream message.
Described terminal is configured according to described Preset Time, comprising:
Adopt the time-out time of described Preset Time configuration timer; Or
Adopt the time-out time of described Preset Time configuration counter; Or
Adopt the length of described Preset Time configurator timing window.
The time-out time of described employing Preset Time configuration timer comprises:
Judge not have to insert at random to switch whether successful timer is configured to being exclusively used in; Or
Time is adjusted timer to be configured.
Described terminal is carried out subsequent treatment and is specifically comprised:
When described terminal received the described efficient message of described network side destination node in described Preset Time, described terminal stopped described timing; Or described terminal is handled according to described efficient message.
Described terminal is handled specifically according to described efficient message and is comprised:
When the time of carrying in the described efficient message was adjusted the new Preset Time of timer, described terminal was carried out timing according to described new Preset Time; Or
When the time of carrying in the described efficient message was adjusted order, then described terminal was adjusted timer to the time and is reset.
The efficient message of described network side destination node comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
Embodiments of the invention provide a kind of switched system, comprising:
The network side source node is used to receive the message of network side destination node, carries switching command in the described message; Send described switching command to terminal, carry nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch;
The network side destination node, send message to the network side source node, carry switching command in the described message, carry described nothing in the described switching command and insert indication message at random, make described terminal according to described nothing at random indication message judge whether not have at random to insert and switch; Whether described terminal basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message;
Terminal receives the switching command that the network side source node sends, and does not have and inserts at random when switching, and judges the efficient message that whether receives described network side destination node in described Preset Time; In described Preset Time, do not receive the efficient message of described network side destination node, then initiate to insert at random to switch.
Embodiments of the invention provide a kind of network side node, comprising:
Network side source node processing module is used to receive the message of network side destination node, carries switching command in the described message; Send described switching command to terminal, carry nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch.
Described network side source node processing module comprises:
Receive submodule, be used to receive the message of described network side destination node, carry switching command in the described message;
Send submodule, be used for sending the described switching command that described reception submodule receives to described terminal, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch.
Described transmission submodule also is used for:
Send described Preset Time to described terminal, described Preset Time is carried at and connects in the reconfiguration message; Or
Transmit the described Preset Time that described network side destination node is described terminal configuration to described terminal, described Preset Time is carried in the described switching command.
Embodiments of the invention provide a kind of network side node, comprising:
Network side destination node processing module, be used for sending message to the network side source node, carry switching command in the described message, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch; Whether described terminal basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message.
Described network side destination node processing module comprises:
Send submodule, send message to described network side source node, carry switching command in the described message, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch; When whether described terminal does not insert the judged result of switching at random and do not have and insert at random when switching according to having, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message.
Described transmission submodule also is used for being sent as to described network side source point the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
Also comprise:
Judge submodule, be used for judging whether that according to the upstream data of the described terminal that receives or signaling carrying nothing at described switching command inserts indication information at random and indicate described terminal not have to insert at random to switch; Or judge whether in described switching command, to carry described nothing according to the detection reference symbol of the described terminal that receives and insert indication information at random and indicate described terminal not have to insert at random to switch.
Described transmission submodule also is used for:
Send described efficient message to described terminal, the described efficient message time of carrying makes described terminal carry out timing according to described new Preset Time when adjusting the new Preset Time of timer; Or
Send described efficient message to described terminal, the described efficient message time of carrying makes described terminal then adjust timer to the time and resets when adjusting order.
Described efficient message comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
Embodiments of the invention provide a kind of terminal, comprising:
Receiver module is used to receive the switching command that the network side source node sends; Receive the efficient message that the network side destination node sends;
Judge module is used for described receiver module and receives the described switching command that described network side source node sends, and does not have and inserts at random when switching, and judges the efficient message that whether receives described network side destination node in Preset Time;
Processing module is used for the efficient message that described judge module judgement described receiver module in described Preset Time does not receive described network side destination node, initiates to insert at random to switch.
Described judge module also is used for:
Insert indication message at random according to the nothing of carrying in the described switching command and judge whether not have access switching at random; Or judge whether not have at random to insert according to other information and switch.
Described receiver module also is used to receive the described Preset Time that described network side source node sends, and specifically is used for:
Receive the described Preset Time that described network side source node sends, described Preset Time is carried at and connects in the configuration messages; Or
The described network side destination node that receives described network side source node forwarding is the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
Also comprise:
Timing module is used for being configured according to described Preset Time, and carries out timing when described configuration finishes; Or
Be configured according to described Preset Time, and when described network side destination node sends article one upstream message, carry out timing in described terminal.
When described timing module is used for being configured according to described Preset Time, specifically be used for:
Adopt the time-out time of described Preset Time configuration timer; Or
Adopt the time-out time of described Preset Time configuration counter; Or
Adopt the length of described Preset Time configurator timing window.
The time-out time of described employing Preset Time configuration timer comprises:
Judge not have to insert at random to switch whether successful timer is configured to being exclusively used in; Or
Time is adjusted timer to be configured.
When described judge module judged that described receiver module receives the described efficient message of described network side destination node in described Preset Time, described processing module also was used for:
Stop described timing; Or handle according to described efficient message.
When described processing module is used for handling according to described efficient message, specifically be used for:
When the time of carrying in the described feedback is adjusted the new Preset Time of timer, carry out timing according to described Preset Time; Or
The time of carrying in described efficient message is adjusted order, and then described terminal is adjusted timer to the time and reset.
The efficient message of described network side destination node comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
Embodiments of the invention judge not to have to insert at random according to the efficient message that whether receives the network side destination node in Preset Time by terminal and switch whether success and handle accordingly, terminal is not had under the situation that inserts handoff failure at random, insert switching at random, improved the reliability and the user experience sense of switching.Certainly, arbitrary product of enforcement embodiments of the invention might not need to reach simultaneously above-described all advantages.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do simple the introduction to the accompanying drawing of required use in the present invention or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of LTE grid in the prior art;
Fig. 2 is for switching the flow chart of the handoff procedure of finishing by X2 interface in the prior art;
Fig. 3 is for switching the flow chart of the handoff procedure of finishing by the S1 interface in the prior art;
Fig. 4 is that CoMP system multi-point cooperative sends schematic diagram data in the prior art;
Fig. 5 is the flow chart of a kind of changing method in the embodiment of the invention;
Fig. 6 is the flow chart of a kind of changing method in the embodiment of the invention;
Fig. 7 is the flow chart of a kind of changing method in the embodiment of the invention;
Fig. 8 is the flow chart of a kind of changing method in the embodiment of the invention;
Fig. 9 is the structural representation of a kind of network side node in the embodiment of the invention;
Figure 10 is the structural representation of a kind of terminal in the embodiment of the invention.
Embodiment
The technical scheme that embodiments of the invention provide comprises: terminal judge not to have to insert at random according to the efficient message that whether receives the network side destination node in Preset Time and switches whether success and handle accordingly, terminal is not had under the situation that inserts handoff failure at random, insert switching at random.
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is carried out clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
In the CoMP system, when many transmission point can participate in same UE Data Receiving simultaneously, think that then between the transmission point of UE and a plurality of transceive data be uplink synchronous, can not need to insert at random switching when switching so, not switch (RACH-less Handover) and have to insert at random; Can only participate in the transmission of same UE data simultaneously when many transmission point, and can not work in coordination with when receiving the data that this UE sends, the SRS (Sounding Reference Symbol surveys reference symbol) that needs Target cell to send by the UE that receives the needs switching judges whether UE can not have access at random and switch.
When UE does not have access switching at random, can adopt following dual mode:
Mode 1:UE directly sends handoff completion message to target eNB after the switching command message that receives source eNB transmission, do not insert at random.
Mode 2: because target eNB also can receive upstream data or signaling that UE sends, target eNB calculates UE by upstream data, signaling or the reference symbol that receives UE and the needed time of target eNB reliable synchronization is adjusted order, should adjust order the time and send to source eNB by handover request ack message, source eNB sends to UE by switching command message again.UE adjusts the indication of order the time of switching back data transmission is adjusted according to the time that receives, thereby carries out uplink synchronous with target eNB.
The embodiment of the invention provides a kind of changing method, as shown in Figure 5, specifically may further comprise the steps:
Above-mentioned network side node can be sub-district, base station (eNB), Relay, comprises the entity that the new terminal that may occur in the future can be switched, and every network side node that allows to switch all belongs to protection scope of the present invention.Embodiments of the invention can be applied to not have between above-mentioned entities of various kinds insert at random and switch, and process is similar.Be described with the scene of switching between eNB in the following execution mode, repeat no more.
The embodiment of the invention provides a kind of changing method, source eNB and target eNB uplink synchronous, do not have to insert at random and switch, UE judges that by being exclusively used in nothing inserts the switching Preset Time whether successful timer disposes according to target eNB at random and judges whether nothing inserts switching at random successful, as shown in Figure 6, specifically may further comprise the steps:
Concrete, when source eNB judges that UE need switch, send handoff request message to target eNB, carry UE in this handoff request information and switch to the target eNB information necessary, preferably, carry the UE context information of UE in the eNB of source, target cell ID (Identifier, sign) etc.
Concrete, target eNB sends handover request ack message to source eNB and may further comprise the steps:
(1) target eNB judges whether to accept this handoff request.
When handoff request that target eNB reception sources eNB sends, whether target eNB employed resource judgment when switching UE accepts this handoff request.
Be that example describes with judged result for accepting handoff request in the embodiment of the invention.
(2) when judged result when accepting this handoff request, judging further whether UE can not have when inserting target eNB to insert at random switches.Target eNB is judged by in following several modes any one whether UE can not have to insert at random and is switched:
Target eNB judges according to upstream data or the signaling of the UE that receives whether UE can not have access at random and switch; Or
Target eNB judges according to the detection reference symbol of the UE that receives whether UE can not have access at random and switch.
Target eNB judges that UE can not have when inserting switching at random, is carrying Preset Time in the switching command that sends handover request ack message to source eNB.
Also comprise UE required other information when target eNB is switched in the switching command, preferably, the system information that comprises target eNB, the preamble information of UE when target eNB inserts switching at random etc., in addition, can also comprise other does not have and to insert indication message at random, sends the used ascending resource of handoff completion message in target eNB, is used to adjust time adjustment that the UE time adjusts timer and orders (TAC) etc. as: UE.
Whether successful step 605, UE do not have at random to insert and switch, switch timer according to the Preset Time configure dedicated that receives in judging not have to insert at random, and at startup timer when target eNB sends article one upstream message.
UE does not have when inserting switching at random, can insert indication message at random according to the nothing of carrying in the switching command and judge that not having access at random switches; Or judge not have to insert at random according to other information and switch.Carried Preset Time owing in the switching command in the present embodiment, so can judge not have by Preset Time and insert switching at random, promptly comprised Preset Time, so think that can not having access at random switches owing in the switching command.
UE can realize by being configured the physics of time counting or logical device timer, counter, time window etc. according to the Preset Time timing that receives, and specifically includes but not limited in the following multiple situation any:
UE adopts the time-out time of Preset Time configuration timer; Or
UE adopts the time-out time of Preset Time configuration counter; Or
UE adopts the length of Preset Time configurator timing window.
When UE adopts Preset Time that timer is configured, can adopt and judge not have to insert at random to switch whether successful timer is configured being exclusively used in; Or the time is adjusted timer be configured.
This Preset Time can be made as the time span of accidental access response window or at random access contention solve the integral multiple of the timing length that timer is provided with.
With target eNB UE configuration is used to judge that whether successful nothing insert switching Preset Time at random in the embodiment of the invention, and by to be exclusively used in judge do not have insert at random switching whether successful timer be configured to example and describe.
Whether successful UE judge not have to insert at random according to being exclusively used in of the Preset Time configuration UE side that receives and switch timer after receiving the switching command that source eNB sends.When sending article one upstream message to target eNB, the timer by the UE side starts the timing to Preset Time.Article one, upstream message can be handoff completion message or scheduling request information.
Whether step 606, UE basis receive in Preset Time whether the judgement of target eNB efficient message does not have access switching at random successful.
Target eNB sends efficient message to UE and comprises in following two kinds of situations any:
(1) target eNB sends efficient message to UE, carries the schedule information of UE correspondence in this target eNB in this efficient message; Or
(2) target eNB sends described efficient message to UE, carries UE in this efficient message and sends the pairing feedback information of data to this target eNB.
Concrete, UE is according to whether receiving in Preset Time the target eNB efficient message judges not have to insert to switch whether successfully comprise in following two kinds of situations any at random:
When timer arrival Preset Time, when UE did not receive the target eNB efficient message, UE judged that nothing inserts handoff failure at random.
Before timer arrived Preset Time, UE received the efficient message that target eNB sends, and UE judges that nothing inserts handover success at random.
Preferably, the efficient message of above-mentioned target eNB transmission is corresponding PDCCH signaling of this UE of target eNB transmission or the HARQ feedback message on the PHICH etc.
Concrete, UE handles according to judged result and comprises in following two kinds of situations any:
(1) when the judged result of UE inserted handoff failure at random for not having, the UE startup inserted handoff procedure at random, sets up uplink synchronous.
(2) when the judged result of UE inserts handover success at random for not having, whether successful UE stop to be exclusively used in and judge not have to insert at random and switch timer timing.
The embodiment of the invention provides a kind of changing method, target eNB configuration Preset Time does not have access at random and switches, UE judges that according to Preset Time whether nothing inserts switching at random successful, as shown in Figure 7, specifically may further comprise the steps by the adjustment of the time in current system timer:
Concrete, when source eNB judges that UE need switch, send handoff request message to target eNB, carry UE in this handoff request information and switch to the target eNB information necessary, preferably, carry the context information of UE in the eNB of source, Target cell ID etc.
Target eNB judges whether UE can not have access at random and switch, and target eNB judge UE can not have insert at random switch after, the content of carrying in the switching command of target eNB in the handover request ack message that source eNB sends, as: Preset Time, UE switch to the required system information of target eNB etc., with similar in the step 603, repeat no more.
In addition, can also carry in the switching command and be used for carrying out needed time of reliable synchronization and adjust order with target eNB.This time is adjusted order and can be got by upstream data, signaling or the SRS calculating of target eNB according to the UE that receives.
Need illustrate, target eNB is that UE configuration is used to judge that whether successful nothing insert switching Preset Time and target eNB at random is that the UE configuration is used for carrying out the needed time of reliable synchronization with target eNB to adjust the layoutprocedure of ordering separate, therefore two parameters can only be carried Preset Time in handover request ack message, also can carry simultaneously in handover request ack message.
UE does not have when inserting switching at random, can insert indication message at random according to the nothing of carrying in the switching command and judge that not having access at random switches; Or judge not have to insert at random according to other information and switch.Carried Preset Time owing in the switching command in the present embodiment, so can judge not have by Preset Time and insert switching at random, promptly comprised Preset Time, so think that can not having access at random switches owing in the switching command.
UE receives the switching command that source eNB sends, and has carried in this switching command to be used to judge that whether successful nothing insert switching Preset Time at random.UE adjusts timer according to the Preset Time that receives to the time in the current system and is configured.And,, start timer and carry out timing when target eNB sends article one upstream message.Article one, upstream message can be handoff completion message or scheduling request information.
Whether step 706, UE basis receive in Preset Time whether the judgement of target eNB efficient message does not have access switching at random successful.
Target eNB sends efficient message to UE and comprises in following two kinds of situations any:
(1) target eNB sends efficient message to UE, carries the schedule information of UE correspondence in this target eNB in this efficient message; Or
(2) target eNB sends described efficient message to UE, carries UE in this efficient message and sends the pairing feedback information of data to this target eNB.
Concrete, UE is according to whether receiving in Preset Time the target eNB efficient message judges not have to insert to switch whether successfully comprise in following two kinds of situations any at random:
(1) when timer arrival Preset Time, when UE did not receive the efficient message of target eNB transmission, UE judged that nothing inserts handoff failure at random.
(2) before timer arrives Preset Time, UE receives the efficient message that target eNB sends, and UE judges that nothing inserts handover success at random.
Concrete, UE handles according to judged result and comprises in following two kinds of situations any:
(1) when the judged result of UE inserted handoff failure at random for not having, the UE startup inserted handoff procedure at random, sets up uplink synchronous.
(2) when the judged result of UE inserted handover success at random for not having, UE handled according to the efficient message that eNB sends.
When having carried new Preset Time in this efficient message, UE reconfigures time adjustment timer according to this Preset Time.
When the time of having carried in this efficient message was adjusted order, UE adjusted the transmitting time that data are readjusted in order according to this time, and the replacement timer.After receiving efficient message,, then handle by the content in 3GPP 36.321 standards if the time is adjusted timer expiry.Owing to receive that the timeout treatment method and the content of the present invention of the time adjustment timer behind the efficient message are irrelevant, therefore be not described in detail at this.
The embodiment of the invention provides a kind of changing method, source eNB configuration Preset Time does not have access at random and switches, UE is exclusively used in and judges that nothing inserts the switching Preset Time whether successful timer disposes according to target eNB at random and judges whether nothing inserts switching at random successful, as shown in Figure 8, specifically may further comprise the steps:
Concrete, when source eNB judges that UE need switch, send handoff request message to target eNB, carry UE in this handoff request information and switch to the target eNB information necessary, preferably, carry the context information of UE in the eNB of source, target cell ID etc.
Target eNB judges whether UE can not have access at random and switch, and target eNB judge UE can not have insert at random switch after, the content of carrying in the switching command of target eNB in the handover request ack message that source eNB sends, as: UE switches to the required system information of target eNB etc., with similar in the step 603, repeat no more.Different is that Preset Time is that source eNB is configured, can carry UE in the switching command does not have at random and to insert the indication information that switches, and adjusts order, is specifically designed to indication UE and does not have and insert the indication bit that switches or other at random and can indicate UE not have to insert the information of switching at random and all can as: time.In this case, can also carry Preset Time in the switching command.At this moment, when UE receives the Preset Time that carries in the switching command, can think that the Preset Time of source eNB transmission is invalid.
Need to prove that source eNB sends the connection reconfiguration information of carrying Preset Time to UE also can judge that the random time before UE need switch sends at source eNB.
Whether successful step 806, UE do not have at random to insert and switch, switch timer according to the Preset Time configure dedicated that receives in judging not have to insert at random, and the startup timer.
UE does not have when inserting switching at random, can judge not have to insert at random according to the indication information that carries in the switching command to switch; Or judge not have to insert at random according to other information and switch.
UE starts timer and carries out timing and comprise in following two kinds of situations any:
(a) UE after Preset Time configuration timer, starts this timer at once when receiving switching command;
(b) UE is starting this timer when target eNB sends article one upstream message, and article one upstream message can be handoff completion message or scheduling request information.
Whether step 807, UE basis receive in Preset Time whether the judgement of target eNB efficient message does not have access switching at random successful.
Target eNB sends efficient message to UE and comprises in following two kinds of situations any:
(1) target eNB sends efficient message to UE, carries the schedule information of UE correspondence in this target eNB in this efficient message; Or
(2) target eNB sends described efficient message to UE, carries UE in this efficient message and sends the pairing feedback information of data to this target eNB.
Concrete, UE is according to whether receiving in Preset Time the target eNB efficient message judges not have to insert to switch whether successfully comprise in following two kinds of situations any at random:
(1) when timer arrival Preset Time, when UE did not receive the efficient message of target eNB transmission, UE judged that nothing inserts handoff failure at random.
(2) before timer arrives Preset Time, UE receives the efficient message that target eNB sends, and UE judges that nothing inserts handover success at random.
Concrete, UE handles according to judged result and comprises in following two kinds of situations any:
(1) when the judged result of UE inserted handoff failure at random for not having, the UE startup inserted handoff procedure at random, sets up uplink synchronous.
(2) when the judged result of UE inserts handover success at random for not having, whether successful UE stop to be exclusively used in and judge not have to insert at random and switch timer timing.
In the foregoing description, source eNB and target eNB participate in the transmission and the reception of same UE data simultaneously, are uplink synchronous between the transmission point of UE and a plurality of transceive data.The present invention is equally applicable to work as source eNB and target eNB can only participate in the transmission of same UE data simultaneously, receives the data that this UE sends and can not work in coordination with.At this moment, target eNB needs the SRS (Sounding Reference Symbol surveys reference symbol) of the UE transmission of switching to judge whether UE can not have access at random and switch by reception.When target eNB judges that UE can not have access switching at random, switch according to the flow process in the foregoing description.The time was adjusted order and calculated by SRS if employing mode 2 is switched this moment.
In addition, be to finish switching in the foregoing description by X2 interface, the present invention is equally applicable to finish switching by the S1 interface.At this moment, the information transmission between source eNB and the target eNB need be transmitted by MME/S-GW and be finished.When mobile, also can adopt the nothing described in the present invention to insert switching at random in the sub-district of UE under same eNB.Switch with sub-district between eNB and different to be, cell-of-origin and Target cell do not need to carry out the Signalling exchange on X2 or the S1 interface.The process of describing in other processes and the above-mentioned example example is similar.
Embodiments of the invention provide a kind of switched system, comprising:
The network side source node is used to receive the message of network side destination node, carries switching command in the described message; Send described switching command to UE, carry nothing in the described switching command when inserting indication message at random, make described UE according to described nothing at random indication message judge whether not have to insert at random and switch;
The network side destination node, send message to the network side source node, carry switching command in the described message, carry described nothing in the described switching command and insert indication message at random, make described UE according to described nothing at random indication message judge whether not have at random to insert and switch; Whether described UE basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to UE, described UE is judged initiate when in Preset Time, whether receiving described efficient message and in described Preset Time, not receiving described efficient message to insert at random and switch;
UE receives the switching command that the network side source node sends, and does not have and inserts at random when switching, and judges the efficient message that whether receives described network side destination node in Preset Time; In Preset Time, do not receive the efficient message of described network side destination node, then initiate to insert at random to switch.
Network side source node processing module 92 is used to receive the message of network side destination node, carries switching command in the message; Send switching command to UE, carry nothing in the switching command when inserting indication message at random, make UE not judge whether not have to insert at random and switch according to there being at random indication message.
Network side source node processing module 92 comprises:
Receive submodule 921, be used to receive the message of network side destination node, carry switching command in the message;
Send submodule 922, be used for sending and receive the switching command that submodule 921 receives, carry nothing in the switching command when inserting indication message at random, make UE not judge whether not have to insert at random and switch according to there being at random indication message to UE.
Sending submodule 922 also is used for:
Send Preset Time to UE, Preset Time is carried at and connects in the reconfiguration message; Or
To UE transmission network sidelong glance mark node is the Preset Time of UE configuration, and Preset Time is carried in the switching command.
Network side destination node processing module 93, be used for sending message to the network side source node, carry switching command in the message, carry nothing in the switching command when inserting indication message at random, make UE not judge whether not have to insert at random and switch according to there being at random indication message; Whether the UE basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to UE, UE is judged initiate when in Preset Time, whether receiving efficient message and in Preset Time, not receiving efficient message to insert at random and switch.
Network side destination node processing module 93 comprises:
Send submodule 931, send message, carry in the message and carry nothing in the switching command when inserting indication message at random, make UE not judge whether not have to insert at random and switch according to there being at random indication message to the network side source node; When whether UE does not insert the judged result of switching at random and do not have and insert at random when switching according to having, send efficient message to UE, UE is judged initiate when in Preset Time, whether receiving efficient message and in Preset Time, not receiving efficient message to insert at random and switch.
Send the Preset Time that submodule 931 also is used for being sent as to the network side source point UE configuration, Preset Time is carried in the switching command.
Also comprise:
Sending submodule 931 also is used for:
Send efficient message to UE, the efficient message time of carrying makes UE carry out timing according to new Preset Time when adjusting the new Preset Time of timer; Or
Send efficient message to UE, the efficient message time of carrying makes UE then adjust timer to the time and resets when adjusting order.
Efficient message comprises:
The schedule information of UE correspondence in the network side destination node; Or
UE sends the pairing feedback information of data to the network side destination node.
Judge module is used to judge that network side node is network side source node or network side destination node.
UE100 in the said system as shown in figure 10, comprising:
Insert indication message at random according to the nothing of carrying in the switching command and judge whether not have access switching at random; Or judge whether not have at random to insert according to other information and switch.
Receive the Preset Time that the network side source node sends, Preset Time is carried at and connects in the configuration messages; Or
The network side destination node that receives the forwarding of network side source node is the Preset Time of UE configuration, and Preset Time is carried in the switching command.
Also comprise:
Be configured according to Preset Time, and when the network side destination node sends article one upstream message, carry out timing at UE.
When timing module 104 is used for being configured according to Preset Time, specifically be used for:
Adopt the time-out time of Preset Time configuration timer; Or
Adopt the time-out time of Preset Time configuration counter; Or
Adopt the length of Preset Time configurator timing window.
Adopt the time-out time of Preset Time configuration timer, comprising:
Judge not have to insert at random to switch whether successful timer is configured to being exclusively used in; Or
Time is adjusted timer to be configured.
When judge module 102 judged that receiver module 101 receives the efficient message of network side destination node in Preset Time, processing module 103 also was used for:
Stop timing; Or handle according to efficient message.
When processing module 103 is used for handling according to efficient message, specifically be used for:
When the time of carrying in the feedback is adjusted the new Preset Time of timer, carry out timing according to Preset Time; Or
The time of carrying in effective message is adjusted order, and then UE resets to time adjustment timer.
The efficient message of network side destination node comprises:
The schedule information of UE correspondence in the network side destination node; Or
UE sends the pairing feedback information of data to the network side destination node.
Embodiments of the invention judge not to have to insert at random according to the efficient message that whether receives the network side destination node in Preset Time by UE and switch whether success and handle accordingly, UE is not had under the situation that inserts handoff failure at random, insert switching at random, improved the reliability and the user experience sense of switching.Certainly, arbitrary product of enforcement embodiments of the invention might not need to reach simultaneously above-described all advantages.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (28)
1. a changing method is characterized in that, comprising:
When terminal receives the switching command that the network side source node sends, do not have at random and insert when switching, whether described terminal judges receives the efficient message of described network side destination node in Preset Time;
Described terminal does not receive the efficient message of described network side destination node in Preset Time, then described terminal is initiated to insert at random to switch.
2. the method for claim 1 is characterized in that, the described terminal of working as receives the switching command that the network side source node sends, and does not have to insert at random to switch to comprise:
Described terminal inserts indication message at random according to the nothing of carrying in the described switching command and judges that not having access at random switches; Or
Described terminal judges that according to other information not having access at random switches.
3. method as claimed in claim 1 or 2 is characterized in that, described terminal does not have before the access switching at random, and also comprise: described terminal receives the described Preset Time that described network side source node sends, and specifically comprises:
Described terminal receives the described Preset Time that described network side source node sends, and described Preset Time is carried at and connects in the reconfiguration message; Or
The described network side destination node that described terminal receives described network side source node forwarding is the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
4. method as claimed in claim 3 is characterized in that, whether described terminal judges receives before the efficient message of described network side destination node in Preset Time, comprising:
Described terminal is configured according to described Preset Time, and carries out timing when described configuration finishes; Or
Described terminal is configured according to described Preset Time, and carries out timing in described terminal when described network side destination node sends article one upstream message.
5. method as claimed in claim 4 is characterized in that, described terminal is configured according to described Preset Time, comprising:
Adopt the time-out time of described Preset Time configuration timer; Or
Adopt the time-out time of described Preset Time configuration counter; Or
Adopt the length of described Preset Time configurator timing window.
6. method as claimed in claim 5 is characterized in that, the time-out time of described employing Preset Time configuration timer comprises:
Judge not have to insert at random to switch whether successful timer is configured to being exclusively used in; Or
Time is adjusted timer to be configured.
7. the method for claim 1 is characterized in that, when described terminal receives the described efficient message of described network side destination node in described Preset Time, comprising:
Described terminal stops described timing; Or described terminal is handled according to described efficient message.
8. method as claimed in claim 7 is characterized in that, described terminal is handled specifically according to described efficient message and comprised:
When the time of carrying in the described efficient message was adjusted the new Preset Time of timer, described terminal was carried out timing according to described new Preset Time; Or
When the time of carrying in the described efficient message was adjusted order, then described terminal was adjusted timer to the time and is reset.
9. the method for claim 1 is characterized in that, the efficient message of described network side destination node comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
10. a switched system is characterized in that, comprising:
The network side source node is used to receive the message of network side destination node, carries switching command in the described message; Send described switching command to terminal, carry nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch;
The network side destination node, send message to the network side source node, carry switching command in the described message, carry described nothing in the described switching command and insert indication message at random, make described terminal according to described nothing at random indication message judge whether not have at random to insert and switch; Whether described terminal basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message;
Terminal receives the switching command that the network side source node sends, and does not have and inserts at random when switching, and judges the efficient message that whether receives described network side destination node in described Preset Time; In described Preset Time, do not receive the efficient message of described network side destination node, then initiate to insert at random to switch.
11. a network side node is characterized in that, comprising:
Network side source node processing module is used to receive the message of network side destination node, carries switching command in the described message; Send described switching command to terminal, carry nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch.
12. network side node as claimed in claim 11 is characterized in that, described network side source node processing module comprises:
Receive submodule, be used to receive the message of described network side destination node, carry switching command in the described message;
Send submodule, be used for sending the described switching command that described reception submodule receives to described terminal, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch.
13. network side node as claimed in claim 12 is characterized in that, described transmission submodule also is used for:
Send described Preset Time to described terminal, described Preset Time is carried at and connects in the reconfiguration message; Or
Transmit the described Preset Time that described network side destination node is described terminal configuration to described terminal, described Preset Time is carried in the described switching command.
14. a network side node is characterized in that, comprising:
Network side destination node processing module, be used for sending message to the network side source node, carry switching command in the described message, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch; Whether described terminal basis does not have the judged result that inserts switching is not at random had when inserting switching at random, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message.
15. network side node as claimed in claim 14 is characterized in that, described network side destination node processing module comprises:
Send submodule, send message to described network side source node, carry switching command in the described message, carry described nothing in the described switching command when inserting indication message at random, make described terminal according to described nothing at random indication message judge whether not have to insert at random and switch; When whether described terminal does not insert the judged result of switching at random and do not have and insert at random when switching according to having, send efficient message to terminal, make described terminal judges in Preset Time, whether receive described efficient message and initiate to insert at random to switch when in described Preset Time, not receiving described efficient message.
16. network side node as claimed in claim 15 is characterized in that, described transmission submodule also is used for being sent as to described network side source point the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
17. network side node as claimed in claim 14 is characterized in that, also comprises:
Judge submodule, be used for judging whether that according to the upstream data of the described terminal that receives or signaling carrying nothing at described switching command inserts indication information at random and indicate described terminal not have to insert at random to switch; Or judge whether in described switching command, to carry described nothing according to the detection reference symbol of the described terminal that receives and insert indication information at random and indicate described terminal not have to insert at random to switch.
18. network side node as claimed in claim 15 is characterized in that, described transmission submodule also is used for:
Send described efficient message to described terminal, the described efficient message time of carrying makes described terminal carry out timing according to described new Preset Time when adjusting the new Preset Time of timer; Or
Send described efficient message to described terminal, the described efficient message time of carrying makes described terminal then adjust timer to the time and resets when adjusting order.
19. network side node as claimed in claim 18 is characterized in that, described efficient message comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
20. a terminal is characterized in that, comprising:
Receiver module is used to receive the switching command that the network side source node sends; Receive the efficient message that the network side destination node sends;
Judge module is used for described receiver module and receives the described switching command that described network side source node sends, and does not have and inserts at random when switching, and judges the efficient message that whether receives described network side destination node in Preset Time;
Processing module is used for the efficient message that described judge module judgement described receiver module in described Preset Time does not receive described network side destination node, initiates to insert at random to switch.
21. terminal as claimed in claim 20 is characterized in that, described judge module also is used for:
Insert indication message at random according to the nothing of carrying in the described switching command and judge whether not have access switching at random; Or judge whether not have at random to insert according to other information and switch.
22. terminal as claimed in claim 20 is characterized in that, described receiver module also is used to receive the described Preset Time that described network side source node sends, and specifically is used for:
Receive the described Preset Time that described network side source node sends, described Preset Time is carried at and connects in the configuration messages; Or
The described network side destination node that receives described network side source node forwarding is the described Preset Time of described terminal configuration, and described Preset Time is carried in the described switching command.
23. terminal as claimed in claim 22 is characterized in that, also comprises:
Timing module is used for being configured according to described Preset Time, and carries out timing when described configuration finishes; Or
Be configured according to described Preset Time, and when described network side destination node sends article one upstream message, carry out timing in described terminal.
24. terminal as claimed in claim 23 is characterized in that, when described timing module is used for being configured according to described Preset Time, specifically is used for:
Adopt the time-out time of described Preset Time configuration timer; Or
Adopt the time-out time of described Preset Time configuration counter; Or
Adopt the length of described Preset Time configurator timing window.
25. terminal as claimed in claim 24 is characterized in that, the time-out time of described employing Preset Time configuration timer comprises:
Judge not have to insert at random to switch whether successful timer is configured to being exclusively used in; Or
Time is adjusted timer to be configured.
26. terminal as claimed in claim 20 is characterized in that, when described judge module judged that described receiver module receives the described efficient message of described network side destination node in described Preset Time, described processing module also was used for:
Stop described timing; Or handle according to described efficient message.
27. terminal as claimed in claim 26 is characterized in that, when described processing module is used for handling according to described efficient message, specifically is used for:
When the time of carrying in the described feedback is adjusted the new Preset Time of timer, carry out timing according to described Preset Time; Or
The time of carrying in described efficient message is adjusted order, and then described terminal is adjusted timer to the time and reset.
28. terminal as claimed in claim 21 is characterized in that, the efficient message of described network side destination node comprises:
The schedule information of described terminal correspondence in described network side destination node; Or
Described terminal sends the pairing feedback information of data to described network side destination node.
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| CN200910091250.XA CN101998543B (en) | 2009-08-14 | 2009-08-14 | Switching method, system and device |
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| CN200910091250.XA CN101998543B (en) | 2009-08-14 | 2009-08-14 | Switching method, system and device |
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| CN103428786A (en) * | 2012-05-14 | 2013-12-04 | 上海贝尔股份有限公司 | Up-loading information acquiring method and device |
| CN105264978A (en) * | 2013-06-04 | 2016-01-20 | Lg电子株式会社 | Method for transmitting information for synchronization of user equipment by base station in wireless communication system and apparatus for same |
| CN108174422A (en) * | 2016-12-07 | 2018-06-15 | 华为技术有限公司 | The method and device of low-and high-frequency switching method, configurating terminal |
| WO2018188078A1 (en) * | 2017-04-14 | 2018-10-18 | 北京小米移动软件有限公司 | Method and device for switching cells and user equipment |
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| CN109479309A (en) * | 2016-07-13 | 2019-03-15 | 三星电子株式会社 | The connection control method and device used in mobile communications |
| CN109804666A (en) * | 2016-10-07 | 2019-05-24 | 瑞典爱立信有限公司 | The effective time of the uplink license in Target cell is controlled during RACH-LESS switching |
| CN110753376A (en) * | 2018-07-23 | 2020-02-04 | 中兴通讯股份有限公司 | Wireless access mode switching method, base station, terminal and readable storage medium |
| CN112399453A (en) * | 2019-08-12 | 2021-02-23 | 大唐移动通信设备有限公司 | Method and device for processing cell after access failure |
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| CN103428786A (en) * | 2012-05-14 | 2013-12-04 | 上海贝尔股份有限公司 | Up-loading information acquiring method and device |
| CN105264978A (en) * | 2013-06-04 | 2016-01-20 | Lg电子株式会社 | Method for transmitting information for synchronization of user equipment by base station in wireless communication system and apparatus for same |
| CN105264978B (en) * | 2013-06-04 | 2019-09-03 | Lg电子株式会社 | The method and its equipment of the information synchronous for user equipment are sent by base station |
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| CN109479309A (en) * | 2016-07-13 | 2019-03-15 | 三星电子株式会社 | The connection control method and device used in mobile communications |
| US11223980B2 (en) | 2016-07-13 | 2022-01-11 | Samsung Electronics Co., Ltd. | Access control method and apparatus for use in mobile communication |
| CN109804666A (en) * | 2016-10-07 | 2019-05-24 | 瑞典爱立信有限公司 | The effective time of the uplink license in Target cell is controlled during RACH-LESS switching |
| CN108174422A (en) * | 2016-12-07 | 2018-06-15 | 华为技术有限公司 | The method and device of low-and high-frequency switching method, configurating terminal |
| CN108174422B (en) * | 2016-12-07 | 2021-07-20 | 华为技术有限公司 | High-low frequency switching method, terminal configuration method and device |
| WO2018188078A1 (en) * | 2017-04-14 | 2018-10-18 | 北京小米移动软件有限公司 | Method and device for switching cells and user equipment |
| US11452012B2 (en) | 2017-04-14 | 2022-09-20 | Beijing Xiaomi Mobile Software Co., Ltd. | Method, apparatus for cell handover and user equipment |
| CN109392031A (en) * | 2017-08-04 | 2019-02-26 | 北京佰才邦技术有限公司 | A kind of cell switching method, terminal device and former base station |
| CN109392031B (en) * | 2017-08-04 | 2020-08-28 | 北京佰才邦技术有限公司 | Cell switching method, terminal equipment and original base station |
| CN110753376A (en) * | 2018-07-23 | 2020-02-04 | 中兴通讯股份有限公司 | Wireless access mode switching method, base station, terminal and readable storage medium |
| CN112399453A (en) * | 2019-08-12 | 2021-02-23 | 大唐移动通信设备有限公司 | Method and device for processing cell after access failure |
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