CN103856977A - SCell deletion method and apparatus - Google Patents
SCell deletion method and apparatus Download PDFInfo
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- CN103856977A CN103856977A CN201210497809.0A CN201210497809A CN103856977A CN 103856977 A CN103856977 A CN 103856977A CN 201210497809 A CN201210497809 A CN 201210497809A CN 103856977 A CN103856977 A CN 103856977A
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Abstract
The invention discloses an SCell deletion method and apparatus. The method comprises: determining when to perform SCell deletion decision-making; when it is determined that an SCell deletion decision is needed to be made, determining whether it is required to delete a current SCell; and when a determination result is yes, deleting the current SCell. By using the method provided by the embodiments of the invention, when UE transmission demands cannot be satisfied due to the lowered UE transmission demands or worsening SCell channel characteristics, the SCell of UE can be timely deleted, thus unnecessary computing complexity and system cost are reduced.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to SCell delet method and device.
Background technology
LTE(Long Term Evolution, Long Term Evolution) introduce CA(Carrier Aggression in system Rel-10 version, carrier aggregation) characteristic, CA characteristic makes the supported maximum transmission bandwidth of system be increased to 100MHz(5 × 20MHz by 20MHz).In CA system, will be a UE(User Equipment simultaneously, subscriber equipment) service multiple member carriers be divided into PCC(Primary Component Carrier, main member carrier) and SCC(Secondary Component Carrier, auxiliary member carrier).The community that PCC is corresponding is called PCell(Primary Cell, main plot), it inherits the repertoire of LTE Serving cell; The community that SCC is corresponding is called SCell(Secondary Cell, auxiliary community), it only bears data-transformation facility; In the situation that PCell cannot meet UE transmission demand, system can be this UE configuration SCell.
Due to the fluctuation of business, in the time of UE transmission slump in demand, only on PCell, transmit and can meet UE transmission demand, now UE does not have any transfer of data on SCell.But, after UE configuration SCell, think SCell continuously effective, UE can continue to carry out in the high-rise measuring process of SCell configuration, and this has introduced extra computation complexity, has caused unnecessary overhead.
Summary of the invention
The embodiment of the present invention provides a kind of SCell delet method and device, saves unnecessary overhead.
The auxiliary community of the one SCell delet method that the embodiment of the present invention provides, the method comprises:
Determine when that need to carry out SCell deletes judgement;
In the time determining that need to carry out SCell deletes judgement, judge whether to delete current SCell;
When judged result is when being, delete described current SCell.
The auxiliary community of the one SCell delete device that the embodiment of the present invention provides, this device comprises:
SCell deletes judging module, for determining when that need to carry out SCell deletes judgement;
SCell deletes Executive Module, for determining that need to carry out SCell deletes when judgement, judges whether to delete current SCell, and when judged result is when being, deletes described current SCell.
The above embodiment of the present invention has proposed the method and apparatus of a kind of SCell of deletion, reduce or when SCell characteristic of channel variation causes meeting UE transmission demand in UE transmission demand, can in time the SCell of UE be deleted, to reduce unnecessary computation complexity and overhead.
Accompanying drawing explanation
The SCell delet method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention one;
The SCell sweep equipment structural representation that Fig. 2 provides for the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Embodiment mono-
The embodiment of the present invention one proposes a kind of SCell delet method, can, in the situation that opening CA function, meet under the prerequisite of UE transmission demand, and adaptive coupling UE transmission demand, thus reduce invalid overhead or reduce the poor efficiency transmission on SCell; Its flow process can as shown in Figure 1, comprise:
In the embodiment of the present invention, determine when that need to carry out SCell deletes the process of adjudicating, and further includes but not limited to following mode:
If it is that periodic event triggers that mode one triggers the event type of deletion SCell,, in the time that the cycle, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
Concrete, be that periodic event triggers if trigger the event type of deletion SCell, need to determine that SCell deletion judgement cycle and event are (as broadband SINR(Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) information reporting) relation between the triggering cycle, and SCell can be deleted to the integral multiple that the judgement cycle is set as the Event triggered cycle; Further, in the time that the cycle, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
If it is Event triggered aperiodic that mode two triggers the event type of deletion SCell,, in the time that aperiodic, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
Concrete, be Event triggered aperiodic if trigger the event type of deletion SCell, need to determine corresponding criterion (as worked as double triggering event aperiodic etc.); Further, in the time that aperiodic, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
In the embodiment of the present invention, in the time determining that need to carry out SCell deletes judgement, the process that judges whether to delete current SCell, further includes but not limited to following mode:
If it is Event triggered aperiodic that mode one triggers the event type of deletion SCell, deletes timer by SCell and judge whether to delete current SCell.
Concrete, deleting timer by SCell judges whether to delete current SCell and comprises: at MAC(Media Access Control, media interviews control) layer activates when current SCell, the SCell that receives MAC layer activates indication, and delete that timer is current while having opened as SCell, stop SCell and delete timer; In the time of the current SCell of MAC layer deexcitation, receive the SCell deexcitation indication of MAC layer, and start or restart SCell and delete timer; Before SCell deletes timer expiry, do not need to carry out any operation; After SCell deletes timer expiry, determine and need to delete current SCell.
In the embodiment of the present invention, judge whether that the process that need to delete current SCell comprises the following steps:
Step 1, MAC layer are activate certain SCell(by certain algorithm be current SCell) time, to RRC(Radio Resource Control, Radio Resource control) a layer notice SCell activates indication; MAC layer is when by the current SCell of certain algorithm deexcitation, to rrc layer notice SCell deexcitation indication.
Step 2, judgement receive that the SCell of MAC layer notice activates indication or SCell deexcitation indication; If receive SCell deexcitation indication, execution step 3; If receive that SCell activates indication, execution step 4.
Step 3, start or restart SCell and delete timer, and process ends.
Step 4, judge SCell delete timer whether open; If opened, stop SCell and delete timer, and process ends; If do not open process ends.
Based on the processing of above-mentioned steps, before SCell deletes timer expiry, do not need to carry out any operation; After SCell deletes timer expiry, determine and need to delete current SCell.
If it is that periodic event triggers that mode two triggers the event type of deletion SCell, by UE, the channel quality on current SCell judges whether to delete current SCell.
Concrete, the channel quality by UE on current SCell judges whether to delete current SCell and comprises: in the situation that MAC layer SCell activates, obtain the level and smooth rear broadband SINR information of current SCell; In the time that smoothly broadband SINR information is lower than default SINR threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete current SCell; Or, in the unactivated situation of MAC layer SCell, obtain the level and smooth rear RSRQ(Reference Signal Received Quality of current SCell, the reference symbol quality of reception) and information; In the time that smoothly RSRQ information is lower than default RSRQ threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete current SCell.
In the embodiment of the present invention, judge whether that the process that need to delete current SCell comprises the following steps:
Step 1, judge whether the SCell of MAC layer activates; In the situation that MAC layer SCell activates, execution step 2; In the unactivated situation of MAC layer SCell, execution step 3.
Step 2, obtain broadband SINR information after current SCell level and smooth; In the time that smoothly broadband SINR information is lower than default SINR threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete current SCell.
In the embodiment of the present invention, due to SINR message reflection is instantaneous channel conditions, therefore before follow-up use, need SINR information to carry out smoothing processing, need to obtain the level and smooth rear broadband SINR information of current SCell, and broadband SINR information after level and smooth and default SINR threshold value are compared; In the time that smoothly broadband SINR information is lower than default SINR threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete current SCell, and postpone to carry out deterministic process next time after operation according to the time delay of cycle judgement.
Step 3, obtain RSRQ information after current SCell level and smooth; In the time that smoothly RSRQ information is lower than default RSRQ threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete current SCell.
In the embodiment of the present invention, due to RSRQ message reflection is instantaneous channel conditions, therefore before follow-up use, need RSRQ information to carry out smoothing processing, need to obtain the level and smooth rear RSRQ information of current SCell, and RSRQ information after level and smooth and default RSRQ threshold value are compared; In the time that smoothly RSRQ information is lower than default RSRQ threshold value afterwards, determines and need to delete current SCell; In the time that level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete current SCell, and postpone to carry out deterministic process next time after operation according to the time delay of cycle judgement.
It should be noted that, in above-mentioned steps, the object of smooth operation is for fear of the adverse effect that reports instantaneous value to produce algorithm; Its basic operation is described below: first, set up a buffer memory, for the mean value of the value of reporting repeatedly before storage system; Secondly,, in the time obtaining the up-to-date value of reporting, the up-to-date value of reporting is multiplied by coefficient a(a and is less than 1); Then, system cache value is multiplied by after coefficient (1-a) with previous step obtains and is multiplied by the value of the reporting addition after coefficient a, the value of reporting after obtaining smoothly; Finally, deposit the value of reporting after level and smooth in buffer memory with renewal system cache value, for smooth operation is next time prepared.
Can find out by above embodiment, in the embodiment of the present invention, reduce or when SCell characteristic of channel variation causes meeting UE transmission demand, can in time the SCell of UE be deleted, to reduce unnecessary computation complexity and overhead in UE transmission demand.
Embodiment bis-
Based on identical technical conceive, the embodiment of the present invention also provides the structural representation of SCell delete device.Referring to Fig. 2, this device comprises:
SCell deletes judging module 21, for determining when that need to carry out SCell deletes judgement;
SCell deletes Executive Module 22, for determining that need to carry out SCell deletes when judgement, judges whether to delete current SCell, and when judged result is when being, deletes described current SCell.
Described SCell deletes judging module 21, is that periodic event triggers if delete the event type of SCell specifically for triggering, and, in the time that the cycle, trigger event met specified conditions, determines that need to carry out SCell deletes judgement; Or, be Event triggered aperiodic if trigger the event type of deletion SCell,, in the time that aperiodic, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
Described SCell deletes Executive Module 22, is that periodic event triggers if delete the event type of SCell specifically for triggering, and by user equipment (UE), the channel quality on current SCell judges whether to delete current SCell; Or, be Event triggered aperiodic if trigger the event type of deletion SCell, delete timer by SCell and judge whether to delete current SCell.
Described SCell deletes Executive Module 22, be further used in the time that media interviews control MAC layer activates current SCell, the SCell that receives described MAC layer activates indication, and in the time that described SCell deletes that timer is current have been opened, stops described SCell deletion timer; In the time of the current SCell of described MAC layer deexcitation, receive the SCell deexcitation indication of described MAC layer, and start or restart described SCell and delete timer; Before described SCell deletes timer expiry, determine and do not need to delete described current SCell; After described SCell deletes timer expiry, determine and need to delete described current SCell.
Described SCell deletes Executive Module 22, is further used in the situation that MAC layer SCell activates, the level and smooth broadband signal afterwards of obtaining current SCell with interference plus noise than SINR information; When described level and smooth after broadband SINR information during lower than default SINR threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete described current SCell; Or, in the unactivated situation of MAC layer SCell, obtain the level and smooth rear reference symbol quality of reception RSRQ information of current SCell; When described level and smooth after RSRQ information during lower than default RSRQ threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete described current SCell.
Described SCell deletes Executive Module 22, also for when judged result is when being, stops the high level measurement of UE on described current SCell and reports operation.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.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 a storage medium, comprise that some instructions (can be mobile phones in order to make a station terminal equipment, personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (12)
1.
a kind of auxiliary community SCell delet method, is characterized in that, the method comprises:
determine when that need to carry out SCell deletes judgement;
in the time determining that need to carry out SCell deletes judgement, judge whether to delete current SCell;
when judged result is when being, delete described current SCell.
2.
the method of claim 1, is characterized in that, described in determine when need to carry out SCell delete judgement process, further comprise:
be that periodic event triggers if trigger the event type of deletion SCell,, in the time that the cycle, trigger event met specified conditions, determine that need to carry out SCell deletes judgement; Or,
if triggering the event type of deletion SCell is Event triggered aperiodic,, in the time that aperiodic, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
3.
method as claimed in claim 1 or 2, is characterized in that, described in judge whether to delete current SCell process, further comprise:
be that periodic event triggers if trigger the event type of deletion SCell, by user equipment (UE), the channel quality on current SCell judges whether to delete current SCell; Or,
if triggering the event type of deletion SCell is Event triggered aperiodic, deletes timer by SCell and judge whether to delete current SCell.
4.
method as claimed in claim 3, is characterized in that, describedly deletes timer by SCell and judges whether to delete current SCell, specifically comprises:
in the time that media interviews control MAC layer activates current SCell, the SCell that receives described MAC layer activates indication, and in the time that described SCell deletes that timer is current have been opened, stops described SCell deletion timer; In the time of the current SCell of described MAC layer deexcitation, receive the SCell deexcitation indication of described MAC layer, and start or restart described SCell and delete timer;
before described SCell deletes timer expiry, determine and do not need to delete described current SCell; After described SCell deletes timer expiry, determine and need to delete described current SCell.
5.
method as claimed in claim 3, is characterized in that, described by user equipment (UE), the channel quality on current SCell judges whether to delete current SCell, specifically comprises:
in the situation that MAC layer SCell activates, obtain after current SCell level and smooth broadband signal with interference plus noise than SINR information; When described level and smooth after broadband SINR information during lower than default SINR threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete described current SCell; Or,
in the unactivated situation of MAC layer SCell, obtain the level and smooth rear reference symbol quality of reception RSRQ information of current SCell; When described level and smooth after RSRQ information during lower than default RSRQ threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete described current SCell.
6.
the method of claim 1, is characterized in that, described in judge whether to delete current SCell after, also comprise:
when judged result is when being, stop the high level of UE on described current SCell and measure and report operation.
7.
a kind of auxiliary community SCell delete device, is characterized in that, this device comprises:
sCell deletes judging module, for determining when that need to carry out SCell deletes judgement;
sCell deletes Executive Module, for determining that need to carry out SCell deletes when judgement, judges whether to delete current SCell, and when judged result is when being, deletes described current SCell.
8.
device as claimed in claim 7, is characterized in that,
described SCell deletes judging module, is that periodic event triggers if delete the event type of SCell specifically for triggering, and, in the time that the cycle, trigger event met specified conditions, determines that need to carry out SCell deletes judgement; Or, be Event triggered aperiodic if trigger the event type of deletion SCell,, in the time that aperiodic, trigger event met specified conditions, determine that need to carry out SCell deletes judgement.
9.
device, is characterized in that as claimed in claim 7 or 8,
described SCell deletes Executive Module, is that periodic event triggers if delete the event type of SCell specifically for triggering, and by user equipment (UE), the channel quality on current SCell judges whether to delete current SCell; Or, be Event triggered aperiodic if trigger the event type of deletion SCell, delete timer by SCell and judge whether to delete current SCell.
10.
device as claimed in claim 9, is characterized in that,
described SCell deletes Executive Module, is further used in the time that media interviews control MAC layer activates current SCell, and the SCell that receives described MAC layer activates indication, and in the time that described SCell deletes that timer is current have been opened, stops described SCell deletion timer; In the time of the current SCell of described MAC layer deexcitation, receive the SCell deexcitation indication of described MAC layer, and start or restart described SCell and delete timer; Before described SCell deletes timer expiry, determine and do not need to delete described current SCell; After described SCell deletes timer expiry, determine and need to delete described current SCell.
11.
device as claimed in claim 9, is characterized in that,
described SCell deletes Executive Module, is further used in the situation that MAC layer SCell activates, the level and smooth broadband signal afterwards of obtaining current SCell with interference plus noise than SINR information; When described level and smooth after broadband SINR information during lower than default SINR threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear broadband SINR information is more than or equal to default SINR threshold value, determines and do not need to delete described current SCell; Or, in the unactivated situation of MAC layer SCell, obtain the level and smooth rear reference symbol quality of reception RSRQ information of current SCell; When described level and smooth after RSRQ information during lower than default RSRQ threshold value, definitely need to delete described current SCell; In the time that described level and smooth rear RSRQ information is more than or equal to default RSRQ threshold value, determines and do not need to delete described current SCell.
12.
device as claimed in claim 7, is characterized in that,
described SCell deletes Executive Module, also for when judged result is when being, stops the high level measurement of UE on described current SCell and reports operation.
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