Embodiment
For realizing the object of the invention, the embodiment of the invention is being taken all factors into consideration under the situation of terminal capability, in a plurality of member carriers from multicarrier system, select one with the member carrier of terminal capability coupling main carrier, notice terminal real-time listening main carrier as terminal; When being after terminal is selected suitable activation carrier wave according to terminal capability, by the information of selected main carrier to terminal indication activation carrier wave, utilization then activates carrier wave and carries out transfer of data.Because the embodiment of the invention all fully takes into account the ability of terminal when selecting main carrier and activating carrier wave, therefore, the main carrier of selection and activation carrier wave can both correctly provide service for the transfer of data between network side and the terminal.
Below in conjunction with Figure of description the embodiment of the invention is described in detail.
The scheme that relates in various embodiments of the present invention can be applied in the system that uses the multi-carrier transmission data, as the LTE-A system, the network side/network equipment that relates to can be meant the base station of network side or other can implementation in the entity of correlation function.
Be example to be applied in the LTE-A system below, the scheme of the embodiment of the invention is described.
Embodiment one:
As shown in Figure 3, for determining the method schematic diagram of main carrier in the embodiment of the invention one, in the embodiment of the invention one, the ability of terminal comprises the frequency range that terminal can be supported, just terminal has the ability of the special frequency channel utilized transmission data.
The method of embodiment one may further comprise the steps:
Step 101: network side is determined the frequency range that terminal can be supported.
In the present embodiment, the frequency range of terminal support can be that continuous frequency range also can be a plurality of frequency ranges that disperse, and when the accessing terminal to network side, can report the band information that self can support to network side.
Step 102: network side is determined the frequency range that each member carrier takies in the polymerization carrier system.
Step 103: network side selects at least one member carrier as candidate carrier, and the frequency range that the candidate carrier of selecting takies is the frequency range that terminal can be supported.
The frequency range that frequency range that network side takies each member carrier and terminal can be supported compares, and the frequency range of selecting carrier occupancy is that the member carrier of the frequency range that can support of terminal is as candidate carrier.
Step 104: network side is selected the main carrier of a carrier wave as described terminal from candidate carrier.
If the candidate carrier of selecting is a plurality of, then can therefrom choose a main carrier wantonly in this step as terminal in step 103.If the candidate carrier of selecting in step 103 is one, a candidate carrier then will selecting in the step is as the main carrier of terminal.
In the scheme of present embodiment one, the ability of terminal can also comprise the quantity of the member carrier that terminal can be supported, then after step 103, and before the step 104, the method for embodiment one is further comprising the steps of:
Step 103a: network side is selected once more to candidate carrier, and the candidate carrier quantity after selecting once more is not more than the quantity of the member carrier that terminal can support.
Then step 104 will select a carrier wave as main carrier from the candidate carrier after step 103a selects once more.
Increased in the scheme of step 103a, the member carrier quantity that frequency range that terminal can be supported and terminal can be supported is all as the condition of selecting candidate carrier.Ability according to terminal is selected suitable candidate carrier, the frequency range that whole candidate carrier that assurance is selected take all is the frequency range that terminal can be supported, make the final main carrier of determining to have avoided not causing the problem of data transmission fails correctly for transmitting data between terminal and network side because the frequency range of frequency range that main carrier takies and terminal support matches.
Embodiment two:
The embodiment of the invention two is on the basis of embodiment one, with the load of candidate carrier as the condition of selecting main carrier, make the main carrier load of selection less, guarantee that the main carrier of selecting can satisfy the business need of terminal, and make the load balancing of each member carrier in the polymerization carrier system.
The scheme of embodiment two mainly may further comprise the steps:
The first step: network side determines that at least one member carrier is as candidate carrier.
The candidate carrier of this step can be determined according to the scheme of step 101~step 103 record; Also can determine according to the scheme of step 101~103a record; Can also determine by other modes, for example: all regard the member carrier in the polymerization carrier system as candidate carrier.
Determine candidate carrier according to the scheme of step 101~step 103 record in the present embodiment two.
Second step: network side is determined the terminal quantity of each candidate carrier correspondence, and described terminal quantity is with the candidate carrier of the correspondence quantity as the terminal of main carrier.
In the residing LTE-A of the present invention system, have a plurality of member carriers and a plurality of LTE-A terminal, network side will be determined corresponding main carrier for each LTE-A terminal, that is to say, T at a time, a member carrier may become the main carrier of one or more LTE-A terminals.Because the LTE-A terminal is wanted the PDCCH channel and the PDSCH channel of real-time listening main carrier, descending control signaling and downlink data by the transmission of main carrier bearer network side direction terminal, therefore, the terminal quantity of candidate carrier correspondence is many more, represents that the load of this candidate carrier is big more.
Illustrate the method for the terminal quantity of determining the candidate carrier correspondence below.
Suppose, there are member carrier _ 1~member carrier _ 4 in the LTE-A system, LTE-A_1 terminal~LTE-A_5 terminal, at T constantly, the main carrier of LTE-A_1 terminal is member carrier _ 1, the main carrier of LTE-A_2 terminal also is member carrier _ 1, the main carrier of LTE-A_3 terminal is member carrier _ 2, the main carrier of LTE-A_4 terminal is member carrier _ 3, if currently determine main carrier for the LTE-A_5 terminal, and member carrier _ 1~member carrier _ 4 all are candidate carrier, the terminal quantity of then determining member carrier _ 1 correspondence is _ 2, and the terminal quantity of member carrier _ 2 and member carrier _ 3 correspondences is 1, and the terminal quantity of member carrier _ 4 correspondences is 0.
The 3rd step: network side sorts to candidate carrier according to the ascending order of the terminal quantity of correspondence, selects the candidate carrier of corresponding terminal quantity less than first set point.
First set point in this step can rule of thumb be worth definite, and the terminal quantity of the candidate carrier correspondence that assurance is picked out is less; First set point also can determine according to the average load of each candidate carrier, with the mean value of the terminal quantity of each candidate carrier correspondence as first set point.
The 4th step: select one as main carrier in the candidate carrier that network side is picked out from the 3rd step.
More preferably, network side selects the candidate carrier of corresponding terminal quantity minimum as main carrier.
By the scheme of the embodiment of the invention two, definite main carrier not only can with the capabilities match of terminal, the load of main carrier simultaneously is relatively low, makes main carrier can satisfy the business need of terminal well; Simultaneously, the preferential load balancing of selecting the lower candidate carrier of load can make each member carrier in the carrier aggregation system as main carrier, it is excessive to avoid occurring the excessive member carrier operating pressure that causes of some member carrier load, avoids the too small wasting of resources that causes of some carrier load simultaneously.
Embodiment three:
The embodiment of the invention three is on the basis of embodiment one, and as the condition of selecting main carrier, candidate carrier is as main carrier preferably for the selective channel quality with channel quality, and the transmission quality when guaranteeing terminal and network side by main carrier transmission data is higher.
The scheme of embodiment three mainly may further comprise the steps:
The first step: network side determines that at least one member carrier is as candidate carrier.
The candidate carrier of this step can be determined according to the scheme of step 101~step 103 record; Also can determine according to the scheme of step 101~103a record; Can also determine by other modes, for example: all regard the member carrier in the polymerization carrier system as candidate carrier.
Determine candidate carrier according to the scheme of step 101~step 103 record in the present embodiment three.
Second step: network side is determined the channel quality parameter value of each candidate carrier.
The channel quality that relates in the various embodiments of the present invention is meant the channel quality of terminal on certain member carrier, signal to noise ratio just, and the unit of its parameter value can represent with dB.
The channel quality parameter value of terminal on member carrier measured by terminal and reported to the base station.
The 3rd step: network side sorts to candidate carrier according to the descending order of channel quality parameter value, selects the candidate carrier of channel quality parameter value greater than second set point.
Second set point in this step can rule of thumb be worth definite, and the channel quality of the candidate carrier that assurance is picked out is better; Second set point also can determine according to the average channel quality of each candidate carrier, with the mean value of each candidate carrier channel quality parameter as second set point.
The 4th step: select one as main carrier in the candidate carrier that network side is picked out from the 3rd step.
More preferably, the candidate carrier of network side selective channel mass parameter value maximum is as main carrier.
By the scheme of the embodiment of the invention three, definite main carrier not only can with the capabilities match of terminal, simultaneously the channel quality of main carrier is better relatively, can be well provides service for the data transmission procedure of terminal and network side.
Embodiment four:
The embodiment of the invention four comprehensive embodiment two and embodiment three schemes, with the load of candidate carrier and channel quality as the condition of selecting main carrier, the relatively low and channel quality of load of comprehensive selection preferably candidate carrier as main carrier.
The scheme of embodiment four mainly may further comprise the steps:
The first step: network side determines that at least one member carrier is as candidate carrier.
The candidate carrier of this step can be determined according to the scheme of step 101~step 103 record; Also can determine according to the scheme of step 101~103a record; Can also determine by other modes, for example: all regard the member carrier in the polymerization carrier system as candidate carrier.
Determine candidate carrier according to the scheme of step 101~step 103 record in the present embodiment three.
Second step: network side is determined the terminal quantity of each candidate carrier correspondence and the channel quality parameter value of each candidate carrier.
In this step, the scheme of determining the quantity of candidate carrier and channel quality parameter value is identical with scheme among embodiment two and the embodiment three respectively, and the sequencing of the quantity of definite candidate carrier and channel quality parameter value does not limit.
The 3rd step: network side is a parameter with the terminal quantity and the channel quality parameter value of correspondence, determines the weighted value of each candidate carrier.
In this step, the candidate carrier weighted value is calculated by formula (1) and is determined:
Wherein, PRI
iThe weighted value of representing i candidate carrier, 1≤i≤candidate carrier quantity; P1, P2 represent weighted factor, P1+P2=1; UE_NUM_ANCHOR_CC
iThe terminal quantity of representing i candidate carrier correspondence; CQI_CC
iThe channel quality parameter value of representing i candidate carrier; X and Y are fixed value.
Further, the value of X can be maximum terminal quantity corresponding in each candidate carrier, and the value of Y can be the minimum channel mass parameter value in each candidate carrier, and then formula (1) can be deformed into formula (2):
Wherein: MAX (UE_NUM_ANCHOR_CC) represents maximum terminal quantity corresponding in each candidate carrier, and MAX (CQI_CC) represents minimum channel mass parameter value in each candidate carrier.
Load according to candidate carrier is different to the importance of selecting main carrier with channel quality, can adjust the size of P1 and P2 according to actual needs.Distinguishingly, when P1 is 0, when selecting main carrier, expression do not consider the load of candidate carrier, identical with the scheme of embodiment three; When P2 is 0, when selecting main carrier, expression do not consider the channel quality of candidate carrier, identical with the scheme of embodiment two.
The 4th step: network side sorts to candidate carrier according to the descending order of weighted value, selects the candidate carrier of weighted value greater than the 3rd set point.
The 3rd set point in this step can rule of thumb be worth definite, the load of the candidate carrier that assurance is picked out and the needs that channel quality can both satisfy system; The 3rd set point also can determine according to the average weighted value of each candidate carrier, with the mean value of each candidate carrier weighted value as the 3rd set point.
The 5th step: select one as main carrier in the candidate carrier that network side is picked out from the 4th step.
More preferably, network side selects the candidate carrier of weighted value maximum as main carrier.
Scheme by the embodiment of the invention four, with the load of terminal capability, candidate carrier and the channel quality comprehensive consideration of candidate carrier, select candidate carrier that everyway can satisfy system requirements as main carrier, the main carrier of selection can be to the full extent stably as the bearer context for data transmission of terminal and network side.
The embodiment of the invention one to embodiment four is taken all factors into consideration the selection main carrier with the load of terminal capability, candidate carrier and the channel quality of candidate carrier respectively, the channel quality that the load that the embodiment of the invention also is not limited to only to utilize candidate carrier as the condition of selecting main carrier, only utilizes candidate carrier as the condition of selecting main carrier or utilize the load of candidate carrier and channel quality as the condition of selecting main carrier.
The embodiment of the invention also is not limited to the influential parameter of other transfer of data to terminal and network side as the condition of selecting main carrier, for example: with the co-channel interference of minizone as the condition of selecting main carrier, perhaps the condition of the one or more combinations in the channel quality of the load of terminal capability, candidate carrier and candidate carrier and the co-channel interference of minizone are combined, become the condition of selecting main carrier.
The minizone co-channel interference that relates in the various embodiments of the present invention is meant: neighbor cell uses the interference that causes as main carrier with when activating carrier wave with carrier wave frequently, for fear of co-channel interference, neighbor cell should be avoided using with carrier wave frequently as main carrier and activation carrier wave.For example: sub-district 1,2,3 is a cluster, shared sixty percent Yuan carrier wave, and then sub-district 1 can select carrier wave 1 as main carrier, and carrier wave 1 and carrier wave 4 are as activating carrier wave; Sub-district 2 can select carrier wave 2 as main carrier, and carrier wave 2 and carrier wave 5 are as activating carrier wave; Sub-district 3 can select carrier wave 3 as main carrier, and carrier wave 3 and carrier wave 6 are as activating carrier wave, and like this, the main carrier of each cell selecting is different with the activation carrier wave frequently, has avoided co-channel interference.
Embodiment five:
After determining the main carrier of terminal by embodiment one to embodiment four arbitrary scheme, network side will send to corresponding terminal with the sign of the main carrier determined, and the carrier wave of the sign correspondence that will receive by terminal comes real-time listening as the transfer of data main carrier.The method that the embodiment of the invention five provides a kind of terminal that main carrier is monitored as shown in Figure 4, said method comprising the steps of:
Step 201: after the frequency range that network side can be supported according to terminal is determined main carrier, the sign of the main carrier determined is sent to terminal.
In this step, network side is by Radio Resource control (Radio Resource Control, RRC) signaling sends the sign of main carrier to terminal, the sign of main carrier can be the numbering of main carrier in the polymerization carrier system, and the embodiment of the invention also is not limited to the sign that other can unique expression main carrier.
Step 202: after terminal receives sign by the RRC signaling, determine the corresponding main carrier of described sign, and described main carrier is monitored.
The PDCCH channel of terminal real-time listening main carrier and PDSCH channel have determined whether to this terminal distribution resource by the control signaling that receives descending sub frame.If distributed resource, then terminal just is identified for transmitting the activation carrier information of data according to the time-frequency domain position of the indication acquisition resource of dispatch.
Embodiment six:
When having bursty data to transmit between terminal and the network side, perhaps when data quantity transmitted between terminal and the network side reduces, be used to transmit the corresponding adjustment of activation carrier wave number needs of data between terminal and the network side.The embodiment of the invention six has proposed to utilize the main carrier that arbitrary scheme is determined among the embodiment one to embodiment four to indicate the method that activates carrier wave to terminal, as shown in Figure 5, said method comprising the steps of:
Step 301: network side is determined the quantity of the member carrier that frequency range that terminal can be supported and terminal can be supported.
In the present embodiment, the ability of terminal comprises the quantity of frequency range that terminal can be supported and the member carrier that can support, and terminal can report the ability of self to network side when the access network side.
Step 302: network side is determined the frequency range that each member carrier takies in the polymerization carrier system.
Step 303: network side selects at least one member carrier as candidate carrier, and the frequency range that the candidate carrier of selecting takies is the frequency range that terminal can be supported, and the candidate carrier quantity of selecting is not more than the quantity of the member carrier that terminal can support.
In the scheme of embodiment one to embodiment four, put down in writing the feature of selecting candidate carrier, also relate to the feature of selecting candidate carrier in the present embodiment, in order to distinguish different candidate carrier, the candidate carrier of selecting in the time of will being used for determining main carrier is referred to as first candidate carrier, and the candidate carrier of selecting when being used for determining to activate carrier wave is referred to as second candidate carrier.
Step 304: network side is determined the activation number of carriers of needs as required with the data volume of terminal transmission.
Network side can be according to the throughput of each candidate carrier and the data total amount of needs transmission, definite activation number of carriers that needs, and the activation carrier wave that assurance is determined can carry and need data quantity transmitted.
Step 305: network side compares candidate carrier quantity of selecting and the activation number of carriers that needs, if the candidate carrier quantity of selecting is not more than the activation number of carriers that needs, then with the candidate carrier selected all as the activation carrier wave, and jump to step 307; Otherwise, execution in step 306.
Step 306: select N carrier wave as activating carrier wave from candidate carrier, described N equals the activation number of carriers of needs.
Step 307: network side is indicated the sign of the activation carrier wave that obtains to terminal by main carrier.
In this step, the main carrier of the sign of bearing activation carrier wave can be determined by embodiment one to embodiment four arbitrary scheme.
The signaling that network side is used to transmit the sign that activates carrier wave includes but not limited to following several: RRC signaling, L1/L2 signaling or media access control layer (MAC) signaling, wherein, the L1/L2 signaling is meant 1/ layer of 2 control of layer signaling, just a PDCCH information transmitted.
In the scheme of embodiment six, network side is an alternative condition with the frequency range ability of terminal support, carry out Preliminary screening to activating carrier wave, guarantee to activate the capabilities match of carrier wave and terminal, avoid since activate carrier wave and terminal capability do not match cause activate carrier wave can't be correctly for carrying the problem of the data of transmitting between terminal and the network side; Simultaneously, network side is that condition is carried out more accurate screening to the number that activates carrier wave with the member carrier quantity of terminal support with needing data quantity transmitted also, make the activation carrier wave number of selecting under the situation that terminal can be supported, can either carry needs data quantity transmitted, and reduces the wasting of resources again.
Embodiment seven:
The embodiment of the invention seven further contemplates on the basis of embodiment six, in the activation number of carriers of the candidate carrier quantity of selecting greater than needs, in the time of need from candidate carrier, selecting N carrier wave as the activation carrier wave, can be that condition is selected N activation carrier wave with the channel quality of carrier wave.
The scheme of embodiment seven is as follows:
The first step: network side is determined candidate carrier, and the activation number of carriers of determining needs as required with the data volume of terminal transmission.
Second step: candidate carrier quantity and the activation number of carriers that needs are compared, determine the activation number of carriers of candidate carrier quantity greater than needs.
The first step of present embodiment seven and second step can be realized by step 301 to step 305.
The 3rd step: network side is determined the channel quality parameter value of each candidate carrier.
The 4th step: network side selects N candidate carrier as activating carrier wave from candidate carrier, and wherein: the channel quality parameter value of the N of a selection candidate carrier is greater than the channel quality parameter value of unselected candidate carrier.
The concrete selection mode of this step can for:
Candidate carrier is sorted according to the descending order of channel quality parameter value by network side, the candidate carrier that will come top n again is as activating carrier wave.It is the mode that condition is selected N candidate carrier with the channel quality that the embodiment of the invention also is not limited to other, makes that N the candidate carrier of selecting is channel quality parameter candidate carrier preferably.
The 5th step: the sign of the activation carrier wave that network side will be determined sends to terminal by main carrier.
Scheme by embodiment seven, network side is when selecting N activation carrier wave, with the channel quality of candidate carrier to be selected as alternative condition, select the best N of a channel quality candidate carrier as activating carrier wave, make the activation carrier wave picked out can be well provide service for the transfer of data of network side and terminal room.
Embodiment eight:
The embodiment of the invention eight further contemplates on the basis of embodiment six, in the activation number of carriers of the candidate carrier quantity of selecting greater than needs, in the time of need from candidate carrier, selecting N carrier wave as the activation carrier wave, can be that condition is selected N activation carrier wave with the load of carrier wave.
The scheme of embodiment eight is as follows:
The first step: network side is determined candidate carrier, and the activation number of carriers of determining needs as required with the data volume of terminal transmission.
Second step: candidate carrier quantity and the activation number of carriers that needs are compared, determine the activation number of carriers of candidate carrier quantity greater than needs.
The first step of present embodiment eight and second step can be realized by step 301 to step 305.
The 3rd step: network side is determined the terminal quantity of each candidate carrier correspondence, and described terminal quantity is with the candidate carrier of the correspondence quantity as the terminal of main carrier.
The 4th step: network side selects N candidate carrier as activating carrier wave from candidate carrier, and wherein: the terminal quantity of the N of selection candidate carrier correspondence is less than the terminal quantity of unselected candidate carrier correspondence.
The specific implementation of this step can for:
Network side sorts to candidate carrier according to the ascending order of the terminal quantity of correspondence, and the candidate carrier that will come top n is as activating carrier wave.It is the mode that condition is selected N candidate carrier with the load that the embodiment of the invention also is not limited to other, makes that N the candidate carrier of selecting is the lower candidate carrier of load.
Scheme by embodiment eight, network side is when selecting N activation carrier wave, with the load of candidate carrier to be selected as alternative condition, select the minimum N of a load candidate carrier as activating carrier wave, make the activation carrier wave of picking out have enough abilities to offer transfer of data between terminal and network side.
Embodiment nine:
The scheme of the embodiment of the invention nine comprehensive embodiment seven and embodiment eight is that condition is selected N and activated carrier wave with the channel quality of carrier wave and load.
The scheme of embodiment nine is as follows:
The first step: network side is determined candidate carrier, and the activation number of carriers of determining needs as required with the data volume of terminal transmission.
Second step: candidate carrier quantity and the activation number of carriers that needs are compared, determine the activation number of carriers of candidate carrier quantity greater than needs.
The first step of present embodiment nine and second step can be realized by step 301 to step 305.
The 3rd step: network side is determined the channel quality parameter value of each candidate carrier and corresponding terminal quantity, and described terminal quantity is with the candidate carrier of the correspondence quantity as the terminal of main carrier.
In this step, network side is determined newly not limit to the sequencing of mass parameter with the terminal quantity of correspondence.
The 4th step: network side is a parameter with the terminal quantity and the channel quality parameter value of correspondence, determines the weighted value of each candidate carrier.
In this step, the candidate carrier weighted value is calculated by formula (1) and is determined:
Wherein, PRI
iThe weighted value of representing i candidate carrier, 1≤i≤candidate carrier quantity; P1, P2 represent weighted factor, P1+P2=1; UE_NUM_ANCHOR_CC
iThe terminal quantity of representing i candidate carrier correspondence; CQI_CC
iThe channel quality parameter value of representing i candidate carrier; X and Y are fixed value.
Further, the value of X can be maximum terminal quantity corresponding in each candidate carrier, and the value of Y can be the minimum channel mass parameter value in each candidate carrier, and then formula (1) can be deformed into formula (2):
Wherein: MAX (UE_NUM_ANCHOR_CC) represents maximum terminal quantity corresponding in each candidate carrier, and MAX (CQI_CC) represents minimum channel mass parameter value in each candidate carrier.
Load according to candidate carrier is different to the importance of selecting the activation ripple with channel quality, can adjust the size of P1 and P2 according to actual needs.Distinguishingly, when P1 is 0, when selecting to activate carrier wave, expression do not consider the load of candidate carrier, identical with the scheme of embodiment seven; When P2 is 0, when selecting to activate ripple, expression do not consider the channel quality of candidate carrier, identical with the scheme of embodiment eight.
The 5th step: network side is selected N candidate carrier from candidate carrier, wherein, the weighted value of the N of a selection candidate carrier is greater than the weighted value of unselected candidate carrier.
The specific implementation of this step can for:
Network side sorts to candidate carrier according to the descending order of weighted value, will come the candidate carrier of top n as activating carrier wave.It is the mode that condition is selected N candidate carrier with the weighted value that the embodiment of the invention also is not limited to other, makes that N candidate carrier of selection is the lower and channel quality of load candidate carrier preferably.
In arbitrary scheme of the embodiment of the invention six to embodiment nine, comprise the main carrier that is used to transmit the sign that activates carrier wave in the final activation carrier wave of determining.
The condition that the selection that relates in the scheme of the embodiment of the invention six to embodiment nine activates carrier wave comprises following several:
Need the channel quality of data quantity transmitted, candidate carrier and the load of candidate carrier between member carrier quantity, network side and the terminal of the frequency range of terminal support, terminal support.The embodiment of the invention also is not limited to other schemes that above-mentioned alternative condition combination back is selected the activation carrier wave.
The embodiment of the invention also is not limited to the influential parameter of other transfer of data to terminal and network side as the condition of selecting to activate carrier wave, for example: the condition that the co-channel interference of minizone is activated carrier wave as selection, perhaps the condition of the one or more combinations in the channel quality of the load of terminal capability, transmitted data amount, candidate carrier and candidate carrier and the co-channel interference of minizone are combined, become the condition of selecting to activate carrier wave.
Embodiment ten:
After the sign notice terminal of the activation carrier wave that network side will be determined, network side and terminal just can be carried out the transmission of data and control information by the carrier wave that is in state of activation.The embodiment of the invention ten provides a kind of method that activates the carrier transmission data of utilizing, and as shown in Figure 6, said method comprising the steps of:
Step 401: terminal receives the sign of the definite activation carrier wave of network side.
The PDCCH channel of terminal real-time listening main carrier and PDSCH channel when the RRC signaling that receives the sign of carrying the activation carrier wave, L1/L2 signaling or media access control layer (MAC) signaling, prepare to carry out follow-up data transmission procedure.
The sign of the activation carrier wave that terminal receives can be determined by arbitrary scheme among the embodiment six to embodiment nine.
Step 402: terminal is monitored the activation carrier wave of the sign correspondence of described activation carrier wave, and the described activation carrier transmission data by monitoring.
Receive before the sign that activates carrier wave in terminal, terminal may be monitored some member carrier, has promptly activated some member carrier.The sign of the activation carrier wave that terminal will receive compares with the sign of the member carrier that has activated, if there is the also unactivated situation of activation carrier wave of the sign correspondence of the activation carrier wave that receives, then activate corresponding activation carrier wave, this activation carrier transmission data are monitored and utilized to this activation carrier wave; If exist the sign of the member carrier that has activated not to be included in the interior situation of sign of the activation carrier wave that receives, then stop to monitor the member carrier that has activated, be about to the member carrier deexcitation that the network side failed call activates.
The indication that network side requires terminal to activate carrier wave is to be mutually related, and such as only requiring the terminal monitoring main carrier constantly at T1, data volume increased afterwards, also needed to increase the member carrier of monitoring constantly at T2; Perhaps, require terminal monitoring main carrier and other member carrier constantly at T1, data volume reduced afterwards, only needed to monitor main carrier constantly at T2.The sign of terminal according to the activation carrier wave that receives activates member carrier or the scheme of deexcitation below by illustrating.
The current carrier wave that needs to activate is member carrier _ 1, member carrier _ 2 and member carrier _ 3 if network side is determined terminal, and definite terminal has activated member carrier _ 1 and member carrier _ 2, then network side sends to terminal with the sign of member carrier _ 3, requires terminal to activate member carrier _ 3.After terminal is received activation indication information from network side, activate member carrier _ 3.
The current carrier wave that needs to activate is member carrier _ 1 if network side is determined terminal, and determine that terminal has activated member carrier _ 1, member carrier _ 2 and member carrier _ 3, then network side sends to terminal with the sign of member carrier _ 2 and member carrier _ 3, requires terminal deexcitation member carrier _ 2 and member carrier _ 3.Terminal receives from after the deexcitation of the network side indication, and the sign of determining member carrier _ 2 and member carrier _ 3 is that terminal does not need to activate but has been in the sign of the member carrier of state of activation, and then terminal is to deexcitation member carrier _ 2 and member carrier _ 3.
Embodiment 11:
The embodiment of the invention 11 provides a kind of network equipment that belongs under the same inventive concept with embodiment one to embodiment four, shown in Fig. 7 (a), Fig. 7 (b) and Fig. 7 (c), described network equipment comprises: first candidate carrier selects module 11 and main carrier to select module 12, wherein: first candidate carrier selects module 11 to be used to select at least one member carrier as first candidate carrier, wherein, the frequency range that takies of described first candidate carrier is the frequency range that terminal can be supported; Main carrier selects module 12 to be used for selecting the main carrier of a carrier wave as described terminal from described first candidate carrier.
Described first candidate carrier selects module 11 also to be used for first candidate carrier of determining is selected once more, and the first candidate carrier quantity after selecting once more is not more than the quantity of the member carrier that terminal can support; Then described main carrier selects module 12 to be further used for selecting the main carrier of a carrier wave as described terminal first candidate carrier after selecting once more.
Network equipment in the embodiment of the invention 11 can also further screen first candidate carrier according to different conditions, is illustrated respectively below.
Shown in Fig. 7 (a), described network equipment also comprises terminal quantity determination module 13, is used for determining the terminal quantity of each first candidate carrier correspondence, and described terminal quantity is with first candidate carrier of the correspondence quantity as the terminal of main carrier; Described main carrier selects module 12 to be further used for selecting a carrier wave as described main carrier from first candidate carrier of terminal quantity less than first set point of correspondence.
Shown in Fig. 7 (b), described network equipment also comprises channel quality determination module 14, is used for determining the channel quality parameter value of each first candidate carrier; Described main carrier selects module 12 to be further used for from the channel quality parameter value greater than selecting a carrier wave as described main carrier the candidate carrier of second set point.
Shown in Fig. 7 (c), described network equipment also comprises terminal quantity determination module 15, is used for determining the terminal quantity of each first candidate carrier correspondence, and described terminal quantity is with first candidate carrier of the correspondence quantity as the terminal of main carrier; Channel quality determination module 16 is used for determining the channel quality parameter value of each first candidate carrier; Weighted value determination module 17 is used for determining according to following formula (1) weighted value of each candidate carrier:
Wherein, PRI
iThe weighted value of representing i first candidate carrier, the 1≤i≤first candidate carrier quantity; P1, P2 represent weighted factor, P1+P2=1; UE_NUM_ANCHOR_CC
iThe terminal quantity of representing i the first candidate carrier correspondence; CQI_CC
iThe channel quality parameter value of representing i candidate carrier; X and Y are fixed value; Described main carrier selects module 12 to be further used for from weighted value greater than selecting the main carrier of a carrier wave as described terminal first candidate carrier of the 3rd set point.
Embodiment 12:
The embodiment of the invention 12 provides a kind of and embodiment one to embodiment four to belong to the system of the monitoring system under the same inventive concept, as shown in Figure 8, the system of described monitoring system comprises network equipment 21 and terminal 22, wherein: network equipment 21 is used to select at least one member carrier as first candidate carrier, from described first candidate carrier, select the main carrier of a carrier wave as described terminal, and the sign of described main carrier sent to terminal, wherein, the frequency range that takies of described first candidate carrier is the frequency range that terminal can be supported; Terminal 22 is used for the main carrier of the sign correspondence of the described main carrier that receives is monitored.
Network equipment 21 sends the sign of main carrier to terminal 22 by the RRC signaling.
Embodiment 13:
The embodiment of the invention 13 provides a kind of network equipment that belongs under the same inventive concept with embodiment six to embodiment nine, as Fig. 9 (a), shown in Fig. 9 (b) and Fig. 9 (c), described network equipment comprises: second candidate carrier is selected module 31, activate number of carriers determination module 32, comparison module 33, activate carrier wave determination module 34 and indicating module 35, wherein: second candidate carrier selects module 31 to be used to select at least one member carrier as second candidate carrier, wherein, the frequency range that takies of described second candidate carrier is the quantity that the frequency range that can support of terminal and the second candidate carrier quantity are not more than the member carrier that terminal can support; Activate number of carriers determination module 32 and be used for the activation number of carriers of the definite needs of data quantity transmitted as required; Comparison module 33 is used for the activation number of carriers of comparison second candidate carrier quantity and needs; Activate carrier wave determination module 34 and be used for when being the second candidate carrier quantity greater than the activation number of carriers of needs, selecting N carrier wave as the activation carrier wave at comparative result from second candidate carrier, described N equals to activate number of carriers; Otherwise, with second candidate carrier all as activating carrier wave; Indicating module 35 is used for the sign of the activation carrier wave that obtains to the indication of described terminal by main carrier, and described main carrier is to determine according to the frequency range that terminal can be supported.
Network equipment in the embodiment of the invention 13 can also further screen second candidate carrier according to different conditions, is illustrated respectively below.
Shown in Fig. 9 (a), activate carrier wave determination module 34 and comprise that channel quality determines the submodule 401 and the first chooser module 402, wherein: channel quality determines that submodule 401 is used for determining the channel quality parameter value of each second candidate carrier; The first chooser module 402 is used in the second candidate carrier quantity during greater than the activation number of carriers of needs, select N second candidate carrier as activating carrier wave from second candidate carrier, wherein the channel quality parameter value of the N of Xuan Zeing second candidate carrier is greater than the channel quality parameter value of unselected second candidate carrier; Otherwise, with second candidate carrier all as activating carrier wave.
Activate carrier wave determination module 34 and can further include first order submodule 403, be used for determining that according to channel quality the descending order of channel quality parameter value that submodule 401 is determined sorts to second candidate carrier; Then top n second candidate carrier that further first order submodule 403 can be determined of the first chooser module 402 is as activating carrier wave.
Shown in Fig. 9 (b), activate carrier wave determination module 34 and comprise the terminal quantity submodule 404 and the second chooser module 405, wherein: terminal quantity submodule 404 is used for determining the terminal quantity of each second candidate carrier correspondence, and described terminal quantity is with second candidate carrier of the correspondence quantity as the terminal of main carrier; The second chooser module 405 is used in the second candidate carrier quantity during greater than the activation number of carriers of needs, select N second candidate carrier as activating carrier wave from second candidate carrier, wherein the terminal quantity of the N of Xuan Zeing the second candidate carrier correspondence is less than the terminal quantity of the unselected second candidate carrier correspondence; Otherwise, with second candidate carrier all as activating carrier wave.
Activate carrier wave determination module 34 and can further include second order submodule 406, the ascending order of terminal quantity that is used for the correspondence determined according to terminal quantity submodule 404 sorts to second candidate carrier; Then top n second candidate carrier that further second order submodule 406 can be determined of the second chooser module 405 is as activating carrier wave.
Shown in Fig. 9 (c), activate carrier wave determination module 34 and comprise that terminal quantity submodule 407, channel quality determine that submodule 408, weighted value determine submodule 409 and the 3rd chooser module 410, wherein: terminal quantity submodule 407 is used for determining the terminal quantity of each second candidate carrier correspondence, and described terminal quantity is with second candidate carrier of the correspondence quantity as the terminal of main carrier; Channel quality determines that submodule 408 is used for determining the channel quality parameter value of each second candidate carrier; Weighted value determines that submodule 409 is used for determining according to following formula the weighted value of each second candidate carrier:
Wherein, PRI
iThe weighted value of representing i second candidate carrier, the 1≤i≤second candidate carrier quantity; P1, P2 represent weighted factor, P1+P2=1; UE_NUM_ANCHOR_CC
iThe terminal quantity of representing i candidate carrier correspondence; CQI_CC
iThe channel quality parameter value of representing i second candidate carrier; X and Y are fixed value; The 3rd chooser module 410 is used in the second candidate carrier quantity during greater than the activation number of carriers of needs, select N second candidate carrier as activating carrier wave from second candidate carrier, wherein the weighted value of the N of Xuan Zeing second candidate carrier is greater than the weighted value of the unselected second candidate carrier correspondence; Otherwise, with second candidate carrier all as activating carrier wave.
Activate carrier wave determination module 34 and can further include the 3rd arrangement submodule 411, be used for determining that according to weighted value the descending orders of weighted value that submodule 409 is determined sort to second candidate carrier; Then the 3rd chooser module 410 is arranged top n second candidate carrier that submodule 411 determines as activating carrier wave with the 3rd.
Embodiment 14:
The embodiment of the invention 14 provides a kind of data transmission system that belongs under the same inventive concept with embodiment six to embodiment nine, as shown in figure 10, described data transmission system comprises network equipment 51 and terminal 52, wherein: network equipment 51 is used to select at least one member carrier as second candidate carrier, wherein, the frequency range that described second candidate carrier takies is the quantity that the frequency range that can support of terminal and the second candidate carrier quantity are not more than the member carrier that terminal can support, and, data quantity transmitted is determined the activation number of carriers of needs as required, in the activation number of carriers of the second candidate carrier quantity greater than needs, select N carrier wave as activating carrier wave from second candidate carrier, described N equals to activate number of carriers; Otherwise, second candidate carrier all as activating carrier wave, and is sent the sign of the activation carrier wave that obtains by main carrier to described terminal 52, described main carrier is to determine according to the frequency range that terminal can be supported; Terminal 52 is used for the activation carrier wave of the sign correspondence of the described activation carrier wave that receives is monitored, and the described activation carrier transmission data by monitoring.
The embodiment of the invention is taken all factors into consideration the factors such as load of the channel quality and the carrier wave of terminal capability, carrier wave, a kind of scheme of determining main carrier in multicarrier system has been proposed, the feasible main carrier of determining and the capabilities match of terminal, avoided terminal can't correctly monitor the problem of main carrier, simultaneously, the main carrier channel quality of selecting is better, load is lower, can provide service for terminal well.In addition, the embodiment of the invention is taken all factors into consideration the data volume of terminal capability, network side and terminal transmission, the channel quality of carrier wave and the factors such as load of carrier wave, the scheme of definite activation carrier wave has been proposed, make the activation carrier wave of determining to satisfy the requirement of transfer of data, again can be because of selecting to activate the wasting of resources that number of carriers too much causes, the activation carrier wave of Xuan Zeing is the stronger carrier wave of ability simultaneously, can bear the task of transmission data well.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.