CN101873636B - Multi-carrier selection preprocessing method based on multi-carrier system - Google Patents
Multi-carrier selection preprocessing method based on multi-carrier system Download PDFInfo
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Abstract
The invention discloses a multi-carrier selection preprocessing method based on a multi-carrier system. The method comprises the step of sending carrier access information of a full-configuration carrier to an MS (Memory System) after downlink synchronization is established by a BS (Base Station) and the MS, therefore, the MS can determine the accessed carrier according to the carrier access information. The invention can avoid the condition that the MS scans each carrier one by one to select the accessed carrier, thereby reducing and even avoiding the probability of imbalance problem of multi-carrier access at the BS to further, and achieveing the effect of optimum distribution of resources.
Description
Technical field
The present invention relates to the communications field, select preprocess method in particular to a kind of multicarrier based on multicarrier system.
Background technology
In order to improve the message transmission rate of wireless communication system, propose multi-transceiver technology.Under the protocol infrastructure of multi-carrier wireless communications system, unified medium access control entity (Media Access Control, referred to as MAC) control comprise multiple channel (channel 1, channel 2 ..., channel N) physical layer (Physical layer, referred to as PHY).Wherein, each channel can have different bandwidth, and bandwidth here can be continuous or discrete frequency band.
In multi-carrier wireless communications system, for base station, carrier wave can be divided into full configuration carrier wave and partial configuration carrier wave.Wherein, full configuration carrier wave refers to the carrier wave comprising the configuration of all control channels, and control channel here, except comprising synchronous, broadcast, multicast, clean culture control signal channel, also comprises the channel with multi-carrier operation and other carrier informations and parameter correlation.Partial configuration carrier wave refers to the carrier wave being only included in basic controlling channel configuration mutual for supporting business in multi-carrier operation.
In multi-carrier wireless communications system, for mobile radio station, carrier wave can be divided into main carrier and auxiliary carrier wave.Wherein, main carrier refers to the carrier wave for interactive service and whole PHY/MAC control information between base station (Base Station, referred to as BS) and mobile radio station (Mobile Station, referred to as MS).In addition, main carrier is also such as, for the operation of control MS, network insertion.MS only has a main carrier in a community.Auxiliary carrier wave be by the specific order Sum fanction of BS be MS distribute the extra carrier for transport service.Auxiliary carrier wave also may send the control signal that some support multi-carrier operation.In one cell, MS can have one or more auxiliary carrier wave, also can not have auxiliary carrier wave.MS can obtain the partial information of auxiliary carrier wave by main carrier, such as, whether there is the position, configuration information etc. of auxiliary carrier wave, auxiliary carrier wave.Consider the service condition of main carrier and auxiliary carrier wave, main carrier is necessary for and entirely configures carrier wave, and auxiliary carrier wave can be entirely configure carrier wave, also can be partial configuration carrier wave, and concrete condition depends on use and allocation models.
In multi-carrier systems, MS is in initial network access procedure, first the frequency retained last time is adopted to attempt access network, if failure, by according to the order pre-set, scans each carrier wave with certain step-length, carrier wave is selected to access, therefore, a large amount of MS access network on the same carrier may be there is, thus cause the problem occurring BS place multicarrier access load imbalance.
Summary of the invention
Consider that the access of above-mentioned current carrier wave may cause BS place multicarrier access unbalanced problem and propose the present invention, for this reason, the present invention aims to provide a kind of access carrier selection scheme of improvement, and it can realize being guided by BS or specify MS to carry out network insertion to corresponding carrier wave.
To achieve these goals, according to an aspect of the present invention, provide a kind of access carrier based on multicarrier system and select preprocess method.
Preprocess method is selected to comprise according to the access carrier based on multicarrier system of the present invention: after base station and mobile radio station set up down-going synchronous, send the carrier wave access information of full configuration carrier wave to mobile radio station, determine the carrier wave accessed to make mobile radio station according to carrier wave access information.
Preferably, carrier wave access information is load instruction information, and load instruction information comprises one of following: load state information, access allow mark, congested Warning Mark, and wherein, load state information comprises load percentage or load weight mark.
Preferably, the carrier wave access information sending full configuration carrier wave comprises: in the superframe header that base station sends on each full configuration carrier wave or broadcast, carry load instruction and the configuration information of the partly or entirely full configuration carrier wave that base station is supported respectively, wherein, configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: mobile radio station obtains load instruction from the full configuration carrier wave of current access, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access.
Preferably, the carrier wave access information sending full configuration carrier wave comprises: base station is being selected in the superframe header or broadcast that full configuration carrier wave sends, carry load instruction and the configuration information of the partly or entirely full configuration carrier wave that base station is supported, and except in the superframe header that selected complete other full configuration carrier waves configured except carrier wave send or broadcast in whole carrier wave of configuration entirely, carry the selected full identification information configuring carrier wave; Wherein, configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: if the current access of mobile radio station is select entirely to configure carrier wave, then obtain load instruction, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access; If the current access of mobile radio station is the selected complete full configuration carrier wave configured outside carrier wave, then obtain identification information, full carrier wave is configured according to identification information access is selected, acquisition load indicates, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access.
Preferably, the carrier wave access information sending full configuration carrier wave comprises: in the superframe header that base station sends on its each full configuration carrier wave supported or broadcast, and the load of carrying this configuration carrier wave self entirely indicates.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: mobile radio station obtains from the full configuration carrier wave of current access the load instruction that this configures carrier wave entirely; If the load percentage of the full configuration carrier wave of current access is less or load weight mark is designated as gently or access allows mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, then maintain current access; Otherwise, scan other and entirely configure carrier wave, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested to access.
Preferably, in the superframe header that base station sends on the full configuration carrier wave being in congestion state or broadcast, carry the configuration information of the full configuration carrier wave of the non-congested state that is in being designated as congested congested Warning Mark and base station support, wherein, configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
Preferably, in superframe header or broadcast, also carry the load state information of the full configuration carrier wave being in non-congested state.
Preferably, in superframe header or broadcast, configuration information is arranged according to the load state order of the full configuration carrier wave of its correspondence.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: if the current access of mobile radio station is the full configuration carrier wave being in congestion state, then obtain configuration information, and select the full configuration carrier wave being in non-congested state to access according to configuration information.
Preferably, base station is in the superframe header not allowing the full configuration carrier wave accessed sends or broadcast, carry the configuration information of the full configuration carrier wave being designated as the permission access that the access not allowing to access allows mark and base station to support, wherein, configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
Preferably, carrier wave access information is configuration information, configuration information comprise following one of at least: sequence number, frequency, the bandwidth of full configuration carrier wave; The carrier wave access information sending full configuration carrier wave comprises: the configuration information of the partly or entirely full configuration carrier wave that base station is supported, in superframe header or broadcast, is carried in base station.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: mobile radio station obtains configuration information, entirely configures carrier wave access according to configuration information by HASH algorithm Stochastic choice one.
Preferably, in superframe header or broadcast, configuration information is arranged according to the load state order of the full configuration carrier wave of its correspondence.
Preferably, according to carrier wave access information, mobile radio station determines that the carrier wave accessed comprises: mobile radio station obtains configuration information, according to configuration information and configuration information corresponding to each full configuration carrier wave, order is set, by HASH algorithm Stochastic choice one full configuration carrier wave access.
Preferably, configuration information also comprises: the quantity of full configuration carrier wave.
To achieve these goals, according to an aspect of the present invention, additionally provide the another kind of access carrier based on multicarrier system and select preprocess method.
Preprocess method is selected to comprise according to the access carrier based on multicarrier system of the present invention: in initiating ranging process, base station sends ranging response to mobile radio station, and when the full configuration carrier load of the current access of mobile radio station is heavy, refusal access instruction is carried, to notify that mobile radio station refusal accesses at the full configuration carrier wave of current access in ranging response.
Preferably, said method also comprises: mobile radio station receives after ranging response, reads refusal access instruction wherein, and rescans full configuration carrier wave and access.
Preferably, said method also comprises: the load of carrying the full configuration carrier wave of the current access of duty ratio in ranging response is light, or the configuration information of one or more full configuration carrier wave that mobile radio station can access.
By at least one technical scheme above-mentioned of the present invention, MS can be avoided to carry out scanning to select access to each carrier wave one by one, therefore can reduce the probability even avoiding BS place multicarrier to access the appearance of unbalanced problem, and then reach the effect of most optimum distribution of resources.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram selecting preprocess method application scenarios according to a kind of access carrier based on multicarrier system of the embodiment of the present invention;
Fig. 2 is the schematic diagram selecting preprocess method application scenarios according to the another kind of the embodiment of the present invention based on the access carrier of multicarrier system.
Embodiment
As mentioned above, at present, MS, when selecting access carrier, scans voluntarily, thus BS place can be caused to occur the problem of multicarrier access load imbalance.Before selecting access carrier at MS, the load state of BS to each carrier wave that it is supported understands, therefore, if can allow BS that the relevant information of carrier wave is informed MS, make MS foundation to some extent when carrying out access carrier and selecting, such as, select the lighter carrier wave of those loads to access, greatly can reduce the probability that load imbalance problem occurs undoubtedly.Just based on above consideration, embodiments provide a kind of scheme relating to access carrier selection of improvement.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.If do not conflicted, the feature in the embodiment of the present invention and embodiment can combine, mutually all within protection scope of the present invention.
It should be noted that, the mobile radio station mentioned hereinafter, include but not limited to terminal equipments such as dynamic terminal, personal digital assistants; The superframe header mentioned hereinafter comprises main superframe header kimonos superframe header, and broadcast can be additional broadcast message; The configuration information of the full configuration carrier wave mentioned hereinafter, includes but not limited to entirely to configure the system information such as quantity of the sequence number of carrier wave, frequency, bandwidth, full configuration carrier wave.
According to the embodiment of the present invention, provide a kind of access carrier system of selection, preferably, in network initial access process, after MS and BS sets up down-going synchronous, before MS obtains up parameter, carry out access carrier selection.Fig. 1 shows the scene of this access carrier system of selection of application, and as shown in Figure 1, first, scanning down channel obtains down-going synchronous, afterwards, carries out access carrier selection, next, obtains up parameter, and carry out initial ranging and automatically adjust.
For above-mentioned access carrier selection course, embodiments provide a kind of access carrier and select preprocess method.In the method, after BS and MS sets up down-going synchronous, to the carrier wave access information that MS sends full configuration carrier wave, determine the carrier wave accessed according to carrier wave access information to make MS.
Embodiment one
Select in a kind of implementation of preprocess method at above-mentioned access carrier, carrier wave access information is preferably load instruction.Preferably, load instruction can be but be not limited to one of following: load state information, access allow mark, congested Warning Mark, here load state information can be again load percentage or load weight mark (also can be called that load weight state indicates), load state indicated by load instruction, can be the average of the loading condition of corresponding full configuration carrier wave within the regular period, also can be the loading condition at current time;
Preferably, can indicate the weight of corresponding full configuration carrier load with load weight mark, such as, " 1 " represents that load is light, and " 0 " represents load weight.Preferably, can allow to indicate whether the full configuration carrier wave of instruction correspondence allows access with access, such as, " 1 " represents permission access, and " 0 " expression does not allow access.Whether can be in congestion state with the full configuration carrier wave that congested Warning Mark instruction is corresponding, such as, " 1 " expression is in non-congested state, and " 0 " expression is in congestion state.For load percentage, alternatively, it can directly translate into concrete or relative load value.
In this embodiment, the transmission of load state information can be realized in different ways, following present several illustrative examples.
Example 1
In this example, for BS, in its superframe header sent on each full configuration carrier wave or broadcast, carry the load state information of the partly or entirely full configuration carrier wave that BS supports respectively.
Such as, following table 1-1 gives a kind of example of message structure, and in table 1-1, load is designated as load state information, particularly, can be load percentage or the instruction of load weight state.Except load instruction, in the message structure of this embodiment, preferably also carry configuration variable number of having the right, full configuration carrier wave sequence number etc.Similarly, in table 1-2 and table 1-3, sets forth load state information is the message structure that access allows mark and congested Warning Mark.
Table 1-1
| Grammer | Size | Annotation |
| Message format | ||
| Full configuration variable number | TBD | The number of the full configuration carrier wave that this BS supports |
| For (i=0; I < configures variable number entirely; I++) | ||
| Full configuration carrier wave sequence number | TBD | The sequence number of the full configuration carrier wave that this BS supports |
| Load state information | TBD | Two kinds of indicating means: |
| (1) load percentage; (2) load weight state instruction; | ||
| } | ||
| } |
Table 1-2
| Grammer | Size | Annotation |
| Message format | ||
| Full configuration variable number | TBD | The number of the full configuration carrier wave that this BS supports |
| For (i=0; I < configures variable number entirely; I++) | ||
| Full configuration carrier wave sequence number | TBD | The sequence number of the full configuration carrier wave that this BS supports |
| Whether permission accesses | 1 | 0: allow access 1: refusal access |
| } | ||
| } |
Table 1-3
| Grammer | Size | Annotation |
| Message format | ||
| Full configuration variable number | TBD | The number of the full configuration carrier wave that this BS supports |
| For (i=0; I < configures variable number entirely; I++) | ||
| Full configuration carrier wave sequence number | TBD | The sequence number of the full configuration carrier wave that this BS supports |
| Whether congested | 1 | 0: not congested 1: congested |
| } | ||
| } |
For MS, the full configuration carrier wave from current access is obtained load state information by it, and carries out access carrier selection according to load state information.
Such as, for certain load instruction that full configuration carrier wave sequence number is corresponding, if this load is designated as load percentage or load weight mark, then selects the less or load weight mark of load percentage to be designated as light full configuration carrier wave and access; If load is designated as access and allows mark, then select access to allow mark Warning Mark, then the full configuration carrier wave selecting congested Warning Mark to be designated as non-congested accesses.
In this example, by carrying the load instruction of the partly or entirely full configuration carrier wave that BS supports on each full configuration carrier wave, MS can be made can to get load instruction, and carry out access carrier selection according to load instruction, thus multicarrier can be avoided to access load imbalance.
Example 2
In this example, for BS, it goes up in the superframe header or broadcast sent at some full configuration carrier waves (can be that the selected of Stochastic choice configures carrier wave entirely), carry the load instruction of the partly or entirely full configuration carrier wave that BS supports, and except in the superframe header that above-mentioned selected complete other full configuration carrier waves configured except carrier wave send or broadcast in whole carrier wave of configuration entirely, carry the identification information of selected full configuration carrier wave, to inform that full configuration carrier wave of mobile radio station carries load instruction.
The message structure of selected full configuration carrier wave in this example, can with reference to above table 1-1 to showing 1-3, and message structures of other configuration carrier waves entirely, can see following table 2.
Table 2
| Grammer | Size (bit) | Annotation |
| Message format | ||
| Full configuration carrier identification | TBD | Carry the mark of the full configuration carrier wave of the load instruction of partly or entirely full configuration carrier wave |
| } |
For MS, if the current access of MS is select entirely to configure carrier wave, then obtain load instruction, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access; If the current access of MS is that other outside selected full configuration carrier wave configure carrier wave entirely, then obtain the identification information wherein carried, access at selected full configuration carrier wave according to identification information, therefrom obtain load instruction, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access.Can find out, by means of said method, each carrier wave need not be scanned one by one, therefore can save the blind time of sweeping.
By this example, relative to example 1, transmission load can be reduced and indicate the expense brought.
Example 3
In this example, for BS, it is on its each full configuration carrier wave supported in the superframe header that sends or broadcast, carries load instruction of this configuration carrier wave self entirely.Can find out, different with example 2 from example 1, in this example 3, there is not the full configuration subcarrier of the load instruction for sending the partly or entirely full configuration carrier wave that BS supports.Such as, table 3-1 gives load in this example 3 and is designated as load state information, that is, the message structure of load percentage or load weight mark.Table 3-2 gives load in this example 3 and is designated as the message structure that access allows mark; Similarly, table 3-3 gives load in this example 3 and is designated as the message structure of congested Warning Mark.
Table 3-1
| Grammer | Size | Annotation |
| Message format | ||
| Load state information | TBD | Two kinds of indicating means: (1) load percentage; (2) load weight state instruction; |
| } |
Table 3-2
| Grammer | Size (bit) | Annotation |
| Message format | ||
| Whether permission accesses | 1 | 0: allow access 1: refusal access |
| } |
Table 3-3
| Grammer | Size (bit) | Annotation |
| Message format | ||
| Whether congested | 1 | 0: not congested |
| 1: congested | ||
| } |
For MS, MS obtains from the full configuration carrier wave of current access the load instruction that this configures carrier wave entirely, if the load percentage of the full configuration carrier wave of current access is less or load weight mark is designated as gently or access allows mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, then maintain current access; Otherwise, scan other and entirely configure carrier wave, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested to access.
By this example, can realize equally making MS can get load instruction with lower expense, and carry out access carrier selection according to load instruction, thus multicarrier can be avoided to access load imbalance.
Example 4
In this example, the configuration information of the full configuration carrier wave being designated as the non-congested state that is in that congested congested Warning Mark and BS support is carried in the superframe header that sends on the full configuration carrier wave being in congestion state of BS or broadcast.
In the message structure that following table 4-1 provides, configuration information comprises not congested full configuration variable number and carrier wave sequence number.
Table 4-1
| grammer | size | annotation |
| message format | ||
| whether congested | tBD | 0: not congested; 1: congested |
| if (whether congested=1) | ||
| other not congested full configuration variable number | tBD | variable number not congested in the full configuration carrier wave that this BS place supports. |
| for (i=0; Other not congested full configuration variable number of i <; I++) | ||
| carrying of not congested full configuration carrier wave | tBD |
| Wave train number | ||
| } | ||
| } | ||
| } |
As the preferred implementation of one, in message structure, the carrier wave sequence number of not congested full configuration carrier wave can be carried according to the order that full configuration carrier load is descending or ascending, carry out with this priority that instruct MS selects access carrier.
In addition, preferably, as shown in table 4-2 to table 4-4, in message structure, the load instruction of the full configuration carrier wave being in non-congested state can also be carried, be preferably the load state information that table 4-2 provides, that is, load percentage or load weight mark.But when showing shown in 4-4, congested Warning Mark being set to 0, when showing shown in 4-3, allowing traffic sign placement to be 1 access.
Table 4-2
| grammer | size | annotation |
| message format | ||
| other not congested full configuration variable number | tBD | variable number not congested in the full configuration carrier wave that this BS place supports. |
| for (i=0; Other not congested full configuration variable number of i <; I++) | ||
| the carrier wave sequence number of not congested full configuration carrier wave | tBD | |
| the load instruction of not congested full configuration carrier wave | tBD | two kinds of indicating means: (1) load percentage; (2) load weight state instruction; |
| } | ||
| } |
Table 4-3
| grammer | size | annotation |
| message format | ||
| other not congested full configuration variable number | tBD | variable number not congested in the full configuration carrier wave that this BS place supports. |
| for (i=0; Other not congested full configuration variable number of i <; I++) | ||
| the carrier wave sequence number of not congested full configuration carrier wave | tBD | |
| not congested full configuration carrier wave be | 1 | 0: allow access |
| No permission access | 1: refusal access | |
| } | ||
| } |
Table 4-4
| grammer | size | annotation |
| message format | ||
| other not congested full configuration variable number | tBD | variable number not congested in the full configuration carrier wave that this BS place supports. |
| for (i=0; Other not congested full configuration variable number of i <; I++) | ||
| the carrier wave sequence number of not congested full configuration carrier wave | tBD | |
| not congested full configuration carrier wave whether congested | 1 | 0: not congested 1: congested |
| } | ||
| } |
For MS, if the current access of MS is the full configuration carrier wave being in congestion state, then obtain above-mentioned configuration information, and according to configuration information, such as, frequency point information, selects from the full configuration carrier wave being in non-congested state one entirely to configure carrier wave and accesses.
Preferably, when carrying load state letter in the message that BS side sends, MS can, according to configuration information and load instruction, select a full configuration carrier wave to access from the full configuration carrier wave being in non-congested state.
Example 5
For the situation using " access allows mark ", also the process similar with example 4 can be carried out.In this example, BS is in the superframe header not allowing the full configuration carrier wave accessed sends or broadcast, carrying the access being designated as refusal access allows other one or more loads of mark and BS support comparatively light, that is, allow the configuration information of the full configuration carrier wave of access.
In the message structure that following table 5-1 provides, configuration information comprises the full configuration variable number and carrier wave sequence number that allow access.
Table 5-1
| grammer | size | annotation |
| message format | ||
| whether permission accesses | tBD | 0: allow access; 1: do not allow access |
| if (whether allowing access=1) | ||
| other allow access entirely to configure variable number | tBD | the variable number accessed is allowed in the full configuration carrier wave that this BS place supports. |
| for (i=0; The full configuration variable number of other permission accesses of i <; I++) | ||
| allow the carrier wave sequence number of the full configuration carrier wave of access | tBD | |
| } | ||
| } | ||
| } |
Other process in this example are similar with example 4, can understand with reference to the above description to example 4 and implement, no longer carry out repeated description to same or similar content at this.
By above-described embodiment provided by the invention and example, after having can be implemented in down-going synchronous, the load instruction entirely configuring carrier wave is sent to MS by BS, guide or specify MS to select access carrier with this, in the following embodiment provided, BS will no longer give MS about the information of load, and is to provide configuration information, and MS carries out access carrier selection according to carrier information.Specifically see embodiment two.
Embodiment two
In this embodiment, above-mentioned carrier wave access instruction is configuration information, MS is after receiving the message or superframe header carrying configuration information, entirely configure carrier wave by HASH algorithm Stochastic choice one and carry out network insertion, by this embodiment, the expense that BS broadcast transmission configures carrier load instruction entirely can be saved.
As mentioned above, here configuration information can comprise number information and the serial number information of full configuration carrier wave, as the preferred implementation of one, can according to the load state of full configuration carrier wave, such as, the order descending or ascending according to load arranges serial number information, selects priority suggestion or the instruction of access carrier in this, as MS.Like this, MS by the sequence number according to full configuration carrier wave order is set, configuration information carries out HASH computing.
By this embodiment, by sending the configuration information of full configuration carrier wave to MB, MS can be made to carry out HASH computing based on this configuration information and to select access carrier.
Embodiment three
In this embodiment, provide another kind of access carrier and select preprocess method, different from above-mentioned two embodiments, the method is preferably applicable to initiating ranging process.Fig. 2 gives the schematic diagram of the application scenarios of this embodiment, and as shown in Figure 2, first, MS enters initial ranging and self-regulating process, and performs above-mentioned preprocess method during this period after carrying out down channel scanning, down-going synchronous and the acquisition of up parameter.
Particularly, in initiating ranging process, BS sends ranging response (RNG-RSP) to MS, if the full configuration carrier load of the current access of MS is heavier, then BS carries refusal access instruction in ranging response, to notify that MS refusal accesses at the full configuration carrier wave of current access.
Preferably, in this ranging response, the information of the lighter one or more full configuration carrier wave of other loads can also be carried, or directly carry the information of the one or more full configuration carrier wave recommending MS access, here information also belongs to configuration information, can be the system information such as physics sequence number, center frequency point of full configuration carrier wave.
MS is after receiving ranging response, if wherein carry refusal access instruction, then MS will re-start down channel scanning, select access carrier; Preferably, if also have the information of the carrier wave of the lighter or recommendation of load in ranging response, MS can also select fast according to this information, reduces the time that initial intervention procedure spends further.
By the method that this embodiment provides, the pretreatment operation that the access carrier in initiating ranging process is selected can be realized, thus realize access carrier selection.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. the access carrier based on multicarrier system selects a preprocess method, and it is characterized in that, described method comprises:
After base station and mobile radio station set up down-going synchronous, send the carrier wave access information of full configuration carrier wave to described mobile radio station, determine the carrier wave accessed to make described mobile radio station according to described carrier wave access information;
In initiating ranging process, described base station sends ranging response to described mobile radio station, and when the full configuration carrier load of the current access of described mobile radio station is heavy, refusal access instruction is carried, to notify that described mobile radio station refusal accesses at the full configuration carrier wave of described current access in described ranging response.
2. method according to claim 1, it is characterized in that, described carrier wave access information is load instruction information, described load instruction information comprises one of following: load state information, access allow mark, congested Warning Mark, wherein, described load state information comprises load percentage or load weight mark.
3. method according to claim 2, is characterized in that, the carrier wave access information that described transmission configures carrier wave entirely comprises:
In the superframe header that described base station sends on each full configuration carrier wave or broadcast, carry load instruction and the configuration information of the partly or entirely full configuration carrier wave that described base station is supported respectively, wherein, described configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
4. method according to claim 3, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
Described mobile radio station obtains described load instruction from the full configuration carrier wave of current access, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access.
5. method according to claim 2, is characterized in that, the carrier wave access information that described transmission configures carrier wave entirely comprises:
Described base station configures in the superframe header or broadcast that carrier wave sends selected entirely, carry load instruction and the configuration information of the partly or entirely full configuration carrier wave that described base station is supported, and except in the superframe header that described selected complete other full configuration carrier waves configured except carrier wave send or broadcast in described whole carrier wave of configuration entirely, carry the described selected full identification information configuring carrier wave;
Wherein, described configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
6. method according to claim 5, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
If the current access of described mobile radio station is that described selecting configures carrier wave entirely, then obtain described load instruction, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access;
If the current access of described mobile radio station is the described selected complete full configuration carrier wave configured outside carrier wave, then obtain described identification information, full carrier wave is configured according to described the selecting of described identification information access, obtain described load instruction, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, access.
7. method according to claim 2, is characterized in that, the carrier wave access information that described transmission configures carrier wave entirely comprises:
In the superframe header that described base station sends on its each full configuration carrier wave supported or broadcast, carry load instruction of this configuration carrier wave self entirely.
8. method according to claim 7, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
Described mobile radio station obtains from the full configuration carrier wave of current access the load instruction that this configures carrier wave entirely;
If the load percentage of the full configuration carrier wave of described current access is less or load weight mark is designated as gently or access allows mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested, then maintain current access;
Otherwise, scan other and entirely configure carrier wave, and select the less or load weight mark of load percentage to be designated as light or access to allow mark to be designated as the full configuration carrier wave allowing access or congested Warning Mark to be designated as non-congested to access.
9. method according to claim 2, is characterized in that,
In the superframe header that described base station sends on the full configuration carrier wave being in congestion state or broadcast, carry the configuration information of the full configuration carrier wave of the non-congested state that is in being designated as congested congested Warning Mark and the support of described base station, wherein, described configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
10. method according to claim 9, is characterized in that,
In described superframe header or broadcast, described in also carrying, be in the load state information of the full configuration carrier wave of non-congested state.
11. methods according to claim 9, is characterized in that,
In described superframe header or broadcast, described configuration information is arranged according to the load state order of the full configuration carrier wave of its correspondence.
12. methods according to claim 9, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
If the current access of described mobile radio station is the full configuration carrier wave being in congestion state, then obtain described configuration information, and select the full configuration carrier wave being in non-congested state to access according to described configuration information.
13. methods according to claim 2, is characterized in that,
Described base station is in the superframe header not allowing the full configuration carrier wave accessed sends or broadcast, carry the configuration information of the full configuration carrier wave being designated as the permission access that the access not allowing to access allows mark and described base station to support, wherein, described configuration information comprise following one of at least: sequence number, frequency, bandwidth, the quantity of full configuration carrier wave.
14. methods according to claim 1, is characterized in that,
Described carrier wave access information is configuration information, described configuration information comprise following one of at least: sequence number, frequency, the bandwidth of full configuration carrier wave;
The carrier wave access information that described transmission configures carrier wave entirely comprises:
The configuration information of the partly or entirely full configuration carrier wave that described base station is supported, in superframe header or broadcast, is carried in described base station.
15. methods according to claim 14, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
Described mobile radio station obtains described configuration information, entirely configures carrier wave access according to described configuration information by HASH algorithm Stochastic choice one.
16. methods according to claim 14, is characterized in that,
In described superframe header or broadcast, described configuration information is arranged according to the load state order of the full configuration carrier wave of its correspondence.
17. methods according to claim 16, is characterized in that, according to described carrier wave access information, described mobile radio station determines that the carrier wave accessed comprises:
Described mobile radio station obtains described configuration information, arranges order according to described configuration information and configuration information corresponding to each full configuration carrier wave, by HASH algorithm Stochastic choice one full configuration carrier wave access.
18. methods according to claims 14 or 15, it is characterized in that, described configuration information also comprises: the quantity of full configuration carrier wave.
19. methods according to claim 1, is characterized in that, described method also comprises:
After described mobile radio station receives described ranging response, read described refusal access instruction wherein, and rescan and entirely configure carrier wave and access.
20. methods according to claim 1, is characterized in that, described method also comprises:
The load of carrying the full configuration carrier wave of current access described in duty ratio in described ranging response is light, or the configuration information of one or more full configuration carrier wave that described mobile radio station can access.
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| CN107277933B (en) * | 2016-04-06 | 2023-05-02 | 中兴通讯股份有限公司 | Random access channel congestion processing method and device |
| CN107734465B (en) * | 2016-08-12 | 2019-12-20 | 电信科学技术研究院 | Method for transmitting multicast service, method and device for receiving multicast service |
| CN109068351A (en) * | 2018-09-27 | 2018-12-21 | 京信通信系统（中国）有限公司 | Base Station Compatibility method of adjustment, device and communication system |
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| CN1469570A (en) * | 2002-07-20 | 2004-01-21 | 深圳市中兴通讯股份有限公司 | Multiple carrier load balancing method |
| WO2007142891A1 (en) * | 2006-06-02 | 2007-12-13 | Lucent Technologies Inc. | Method for providing an indication of multiple carriers to a mobile unit |
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| CN1469570A (en) * | 2002-07-20 | 2004-01-21 | 深圳市中兴通讯股份有限公司 | Multiple carrier load balancing method |
| WO2007142891A1 (en) * | 2006-06-02 | 2007-12-13 | Lucent Technologies Inc. | Method for providing an indication of multiple carriers to a mobile unit |
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