CN101047429B - Method of resource distribution - Google Patents
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- CN101047429B CN101047429B CN2006100791501A CN200610079150A CN101047429B CN 101047429 B CN101047429 B CN 101047429B CN 2006100791501 A CN2006100791501 A CN 2006100791501A CN 200610079150 A CN200610079150 A CN 200610079150A CN 101047429 B CN101047429 B CN 101047429B
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Abstract
A method for distributing resource includes obtaining channel quality by network side according to uplink signal estimation, selecting sub-carrier wave set with relevant channel quality for user in different QoS requirement and distributing selected carrier wave set to said user, broadcasting sub-carrier wave information of said user and idle sub-carrier wave information then updating occupied resource of his own by said user according to broadcasted information.
Description
Technical field
The present invention relates to the communications field, relate in particular to the distribution of resource.
Background technology
In the information age, increasing people wishes that operator provides at a high speed information access technology reliably, yet the finite sum growing tension of frequency resource, make operator be faced with challenge, that is to say, operator must reasonably distribute and dynamically adjustment limited frequency resource, can satisfy the demand of people to information.
In cellular system, the maximum data throughput that number of users that each sub-district can be supported and system can support, be decided by frequency bandwidth available in this sub-district and spectrum efficiency (bps/hertz to a great extent, the data transfer rate of supporting on the unit frequency band), thus each operator constantly study and improve the available frequency bandwidth and the method for spectrum efficiency.
Second generation mobile communication system (as GSM), generally adopt TDMA (time division multiple access, the data that are different user transmit in different time) or FDMA (frequency division multiple access, the data that are different user transmit on different frequency) technology, its result still is that spectrum efficiency is very low, generally much smaller than 1bit/s/Hz.
3-G (Generation Three mobile communication system) is (as WCDMA, CDMA2000), adopt CDMA (code division multiple access, the data of different user are distinguished by different spreading codes) technology, this technology can realize that user's data transmits on identical time same frequency band, thereby has improved spectrum efficiency greatly.In up-to-date commercial system CDMA2000 1xEV-DO, spectrum efficiency is expected to bring up to more than the 1.5bit/s/Hz.
In order further to improve cell spectrum efficient, some new physical techniques in the Long Term Evolution project of 3-G (Generation Three mobile communication system), have been adopted, as OFDM (OFDM) technology.OFDM and CDMA, the maximum difference of TDMA etc. is that OFDM is a kind of multi-transceiver technology.Comprise a plurality of carrier frequencies in the OFDM symbol, after utilization FFT (fast fourier transform), can partially overlap between each subcarrier frequency range and can accomplish in theory not disturb each other, thereby improve the capacity of system greatly.And the frequency bandwidth that ofdm system takies depends on the quantity that comprises subcarrier, all be easy to from tens kHz to hundreds of MHz realize, so the OFDM technology having conclusive advantage aspect the subdistrict frequency band width with respect to single-carrier technology such as CDMA improving.In addition, described OFDM technology also has higher advantage aspect the raising spectrum efficiency, and it can reach 4～6bit/s/Hz.Therefore, in the Long Term Evolution project of 3-G (Generation Three mobile communication system), OFDM is a downlink transfer technology of greatest concern.
WiMax (IEEE802.16d/e standard) wireless access system has also adopted the OFDM technology at present.
The prior art relevant with the present invention, the OFDMA technology that is based in the IEEE802.16e standard utilizes the distributed allocation method that downlink resource is distributed.This technology uses to different users a plurality of subcarrier allocation that comprise in the OFDM symbol.Its assigning process is as follows:
At first system's subcarrier that all are available is divided into several subchannels (situation for 2048 subcarriers is 32 subchannels), and each subchannel comprises the plurality of sub carrier wave.Adopt then that (described frequency hopping refers to take a parton carrier wave in the OFDM symbol, and the process that changes of cycle in time with frequency hopping.) similarly mode realize multi-user's multiple access, the frequency domain unit when being frequency hopping with frequency hopping mode difference is a subchannel, the time interval is 2 or 3 symbol periods.The position of the experimental process carrier wave that each user is assigned with is by the Random-number Table decision of prior agreement, and the Random-number Table of different user obtains by a basic Random-number Table cyclic shift.Behind 2 or 3 symbol periods, the position of an integer sub-channel width that the subcarrier that the user is assigned to is adjusted to automatically and subcarrier before is separated by.
For example among Fig. 1, the basic sequence that is assigned with is:
0，5，2，10，4，20，8，17，16，11，9，22，18，21，13，19，3，15，6，7，12，14，1
Through the sequence that obtains after twice cyclic shift:
2，10，4，20，8，17，16，11，9，22，18，21，13，19，3，15，6，7，12，14，1，0，5
By prior art as can be seen, there is following defective in it:
When 1, adopting prior art, each user's subcarrier is interweaved, and increases possibility and the interference intensity disturbed each other, causes the rising of error rate of system.And along with the rising of error rate of system, system can constantly start other mechanism offset its influence, retransmits or the error error correction coding of large redundancy more as data, thereby can reduce the efficient of system.
When 2, adopting prior art, can only select a channel to give the user at random, can not guarantee that so selected channel quality is fit to described user, system can only carry out scheduling controlling to the user according to the channel average quality, this needs system to carry out complicated operations at the MAC layer, and need take high-level signaling, thereby the response time is long, has influence on the transmission quality of system and total throughput easily.
3, since in the prior art the assignable subcarrier of each user and position thereof mainly by the Random-number Table decision, like this, the quantity radix of the assignable subcarrier of each user and the fixed-site of described subcarrier, the mode underaction of dynamic assignment.
Summary of the invention
The method that the purpose of this invention is to provide a kind of resource allocation by the present invention, can avoid each user's subcarrier to be interweaved; And the present invention can guarantee that selected channel quality is fit to described user.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method of resource allocation, it comprises:
A, network side are estimated that according to upward signal the channel quality that obtains is that the user with different service quality qos requirement selects the sub carrier group of respective channel quality, and are distributed to described user;
B, the described user's of broadcasting subcarrier information and idle sub-carrier information;
C, described user are according to the shared resource of described broadcast information updating oneself.
Wherein, before described steps A, comprise:
Network side carries out channel quality estimation according to user's upward signal, and estimation is obtained described quality of channel information mapping to down channel.
Wherein, add fashionablely as new user, described steps A specifically comprises:
A1, network side judge that according to user's qos requirement described user still is the data class user for the general category user; If described user is the general category user, then never by in the set of the idle sub-carrier group of all data class CUs, and, do not select the sub carrier group that it is had best channel qualities, distribute to described general category user by in the sub carrier group of other general category CU; If described user is the data class user, is then never selected the sub carrier group that it is had best channel qualities in the set of the idle sub-carrier of all data class CUs, and distributed to described data class user.
Wherein, when newly adding access customer and be the data class user, also comprise:
For described data class user is provided with counter, and be that described counter is provided with corresponding initial value according to described data class user's qos requirement.
Wherein, in communication process, described steps A also comprises:
A2, different types of user's resource is redistributed.
Wherein, when the user was the data class user, described steps A 2 specifically comprised:
A21, network side detect the counter of each data class user correspondence automatically, when the numeral in finding described counter is not " 0 ", then its count value is subtracted 1, and when described count value is " 0 ", according to the quality of channel information of estimating to obtain, concentrate the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it is distributed to described data class user; After assigning, described counter is reverted to initial value, continue execution in step A21 then;
Or,
A22, the quality of channel information that periodically obtains according to estimation are concentrated the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it are distributed to described data class user.
Wherein, when the user was the general category user, described steps A 2 specifically comprised:
Described general category is not in by the set of the idle sub-carrier group of all data class CUs, and it is mobile afterwards to circulate forward or mutually automatically by the mode of frequency hopping all sub carrier group that it is shared, and Moving Unit is the integral multiple of the width of its shared carrier wave set.
Wherein, the width of described carrier wave set is to determine according to the quantity of the available subcarrier that can distribute to all users and the quantity of carrier wave set.
Wherein, described steps A also comprises:
The quantity of the sub carrier group that A3, the user that different QoS is required are shared is dynamically adjusted.
Wherein, described steps A 3 specifically comprises:
When needs increase the quantity of the shared sub carrier group of data class user, distribute to described data class user then according to the channel quality information of estimating to obtain top-quality sub carrier group of selective channel from idle carrier wave set set, and with it;
Or,
When needs reduce the quantity of the shared sub carrier group of data class user, from the shared sub carrier group of described data class user, remove the sub carrier group that to delete;
Or,
When needs increase the quantity of the shared sub carrier group of general category user, the sub carrier group that selection is not taken by other domestic consumer in the set of idle sub-carrier group, and distribute to described domestic consumer;
Or,
When needs reduce the quantity of the shared sub carrier group of general category user, from the shared sub carrier group of described general category user, remove the sub carrier group that to delete.
Wherein, described steps A also comprises:
Network side is determined described user's scheduling mode according to the channel quality of distributing to described user's sub carrier group.
Wherein, when described user was the data class user, described step C specifically comprised:
Described data class user gets access to its sub carrier group that takies from system broadcast message after, from the orthogonal frequency division multiplex OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of described information updating of obtaining; And,
All general category users of network side get access to the idle sub-carrier group from system broadcast information, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
Wherein, when described user was the general category user, described step C specifically comprised:
Described general category user gets access to idle sub-carrier group and its shared subcarrier from system broadcast information, from the OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
As seen from the above technical solution provided by the invention, network side estimates that according to upward signal the channel quality that obtains is that the user with different QoS requirement selects the sub carrier group of respective channel quality among the present invention, and distributes to described user; Broadcast described user's subcarrier information and idle sub-carrier information then; Described user is according to the shared resource of described broadcast information updating oneself.Therefore by the present invention, distribute to the channel quality difference of user's sub carrier group, thereby can avoid each user's subcarrier to be interweaved, can reduce the possibility and the interference intensity of the phase mutual interference between each subcarrier, reduce error rate of system; And, the present invention can guarantee that selected channel quality is fit to described user, system only needs just can distinguish scheduling controlling to different user according to the channel quality that distributes for the user in the simple scheduling of MAC layer increase like this, need not to carry out complicated operations at the MAC layer, response time is shorter, thereby can improve the transmission quality of system and total throughput.
In addition, but the present invention is according to the definite assignable number of subcarriers radix of quantity of the quantity and the sub carrier group of the subcarrier of distributing user, thereby can change the assignable number of subcarriers radix of each user, and the position of distributing to the subcarrier of different user can change, and makes the mode of dynamic assignment more flexible.
Description of drawings
Fig. 1 is in the prior art giving a plurality of subcarrier allocation that comprise in the OFDM symbol different users' distribution schematic diagram;
Fig. 2 is the flow chart of first embodiment provided by the invention;
Fig. 3 is the schematic diagram during a plurality of OFDM symbol for descending time slot among first embodiment provided by the invention transmits.
Embodiment
The present invention proposes a kind of method of resource allocation, its main thought is: network terminal is carried out channel estimating according to user's upward signal (as training sequence, or the pilot tone among the SC-FDMA), and with the estimated quality of channel information mapping that arrives to down channel.And network terminal determines allocation of subcarriers how according to the downstream data flow of each user's quality of service, needs and channel quality information and at the modulation system of different user.Part user adopts simple frequency hopping mode to reduce the cost of command transmitting, and other user adopts the mode of designate sub to obtain higher transmission quality.The change of subcarrier allocation and modulation system is embedded in the downlink data, and the user adjusts accordingly after receiving.
First embodiment provided by the invention as shown in Figure 2, comprises the steps:
Add as new user fashionable because different user has different demands with business, such as, some business requires the real-time height as speech business, time delay is little, but message transmission rate is less demanding, and can stand higher bit error rate; The certain user can stand than long time delay, but requires message transmission rate very high, and requires harmless transmission.At different users and business, the present invention is divided into data class and general category according to different qos requirements with the user, and distributes an interim ID for described user.And if this user be data class then for this reason the user set up a counter, the initial value of counter (positive integer) is determined by the class of business under this user.High more for transmission quality requirements, the user that data rate is big more (as HD video), the counter initial value is more little, otherwise big more.System notifies its class of service of user and interim ID in broadcast channel.Then different users is carried out resource allocation.Specific implementation process is as follows:
Network side judges that according to its qos requirement described user still is the data class user for the general category user; If described user is the general category user, then never by in the set of the idle sub-carrier group of all data class CUs, and, do not select the sub carrier group that it is had best channel qualities, distribute to described general category user by in the sub carrier group of other general category CU; If described user is the data class user, then never selected the sub carrier group that it is had best channel qualities in the set of the idle sub-carrier of all data class CUs, and distribute to described data class user, for described data class user counter is set then, and is that described counter is provided with corresponding initial value according to described data class user's qos requirement.
When needing to reduce the user in the system, that reduce if desired is the data class user, and then system regains counter and ID, broadcasts new idle carrier wave set set.That reduce if desired is the general category user, and system regains ID, without any need for broadcasting.
Because therefore the time dependent characteristic of wireless channel also needs to accomplish after channel variation, redistributes subcarrier according to new channel conditions.The present invention is directed to the demanding data class user of data transmission quality, use complicated resource re-allocation method; For the general category user, use the resource re-allocation method of simplifying most to realize frequency diversity.Concrete resource re-allocation process is as follows:
For the data class user, network side detects the counter of each data class user correspondence automatically, when the numeral in finding described counter is not " 0 ", then its count value is subtracted 1, and when described count value is " 0 ", according to the quality of channel information of estimating to obtain, concentrate the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it is distributed to described data class user; After assigning, described counter is reverted to initial value, continue to detect the counter of each data class user correspondence then.
If it is 0 simultaneously that a plurality of data class users' counter is arranged, then the system start-up federated resource distributes, that is to say, in current carrier wave set that takies of described a plurality of data users and the top-quality sub carrier group of selective channel in the shared idle carrier wave set set, and it is distributed to described data class user by all data class users.
For the general category user, described general category is not in by the set of the idle sub-carrier group of all data class CUs, automatically it is mobile afterwards to circulate forward or mutually by the mode of frequency hopping all sub carrier group that it is shared, and Moving Unit is the integral multiple of the width of its shared carrier wave set.Wherein, the width of described carrier wave set is to determine according to the quantity of the available subcarrier that can distribute to all users and the quantity of carrier wave set.
Suppose that all users under the network side system can take certain or certain several OFDM symbols, then system reserves a part as broadcasting and pilot channel usefulness in all subcarriers.All the other all available subcarriers are divided into several carrier wave set, comprise the adjacent subcarrier of equal number in each carrier wave set.Can distribute to the user if any N subcarrier, M carrier wave set arranged, then each carrier wave set by
N/M
Individual adjacent
N/M
Subcarrier is formed.Described
N/M
Finger is not more than the integer of the maximum of N/M, is designated as the width of carrier wave set.
The carrier wave set that each CU is limited, (integral multiple of descending time slot) at set intervals, all carrier wave set that each domestic consumer takies circulation forward or backward automatically move, and the unit that moves is the integral multiple (the frequency hopping mode among the similar WiMax) of carrier wave set width.General category user's carrier wave set circulation is moved and must be carried out in current idle carrier wave set set, the cyclic shift that is carrier wave set refers to move integer-bit rather than move integer-bit in all carrier wave set of OFDM symbol in idle carrier wave set set, and purpose is to prevent to overlap with data user's carrier wave set.
Suppose to have 10 carrier wave set, all odd number carrier wave set (No. 1, No. 3, No. 5 ... carrier wave set) constitutes idle carrier wave set set, the current carrier wave set that takies of user is No. 1, the carrier wave set of CU moves one behind the certain hour, then is from moving on to No. 3 carrier wave set for No. 1 rather than moving to carrier wave set No. 2 from No. 1 in the set of idle carrier wave set.
In addition, when practical application OFDMA technology communicates, downstream data rate has very big fluctuation (as the digital video with the variable bit rate compression), scheduling mode at different user also can change (disturb standby BPSK when big such as bad channel, channel disturbs well hour uses 64QAM).Therefore also need the quantity of the shared sub carrier group of the user of different QoS requirement dynamically to be adjusted, and notify the user according to user's downstream data rate.Concrete adjustment process is as follows:
Network side detects user's downstream data rate, when determining to increase the quantity of the shared sub carrier group of user according to testing result, judge at first then whether described user is the data class user, if, distribute to described data class user then according to the channel quality information of estimating to obtain top-quality sub carrier group of selective channel from idle carrier wave set set, and with it; If described user is the general category user, then in idle sub-carrier group set, selects the sub carrier group that do not taken, and distribute to described domestic consumer by other domestic consumer.
Because domestic consumer is constantly in frequency hopping, " not taken by other domestic consumer " refers to change in first time slot after coming into force and do not taken by other domestic consumer.
When determining to reduce the quantity of the shared sub carrier group of user, then from the shared sub carrier group of described user, remove the sub carrier group that to delete according to testing result.
Because user's digital modulation mode directly affects the spectrum efficiency of channel,, each user can both be used to its decay little subcarrier and the digital modulation mode of high-order, so that improve spectrum efficiency at this situation.At this situation, the present invention also adjusts user's modulation system, and specific implementation process is as follows:
Through behind the said process, network side estimates that according to upward signal the channel quality that obtains is that the user with different QoS requirement selects the sub carrier group of suitable channel quality, and distributes to described user.And determine described user's scheduling mode according to the channel quality of the sub carrier group of distributing to described user, carry out following steps then:
Transmit the situation of a plurality of OFDM symbols for a descending time slot, as shown in Figure 3, can a plurality of OFDM symbols share a broadcast channel (reserving) in certain or a plurality of OFDM symbol, each user can take carrier wave set in different OFDM symbols.In each OFDM symbol, under the more situation of available subcarrier, also can independently broadcast channel be arranged each OFDM symbol.
In the step 5, if the described user who is assigned with resource is the data class user, then described data class user gets access to its sub carrier group that takies from system broadcast message after, from the OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of described information updating of obtaining; And all general category users of network side get access to the idle sub-carrier group from system broadcast information, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
When the described user who is assigned with resource is the general category user, described general category user gets access to idle sub-carrier group and its shared subcarrier from system broadcast information, from the OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
When adopting first embodiment, can clearly distinguish the user of different business, adopt simple frequency hopping mode to realize frequency diversity for the lower user of qos requirement, substantially do not need to take broadcast resource, other data class user carries out resource re-allocation with certain frequency, the requirement of the frequency reflection QoS of optimization.
Second embodiment provided by the invention, be with the difference of first embodiment: when new data class user adds fashionable, described system is not provided with counter for described data class user, when carrying out resource re-allocation, periodically concentrate the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it is distributed to described data class user according to the quality of channel information of estimating to obtain.Other process and first embodiment are identical, are not described in detail here.
When adopting second embodiment,, can not carry out resource re-allocation according to the requirement of user's QoS, but adopt the same cycle to carry out for all data class users.
By the embodiment of the invention described above as can be seen, there is following remarkable result in the present invention:
Utilize the amphicheirality of TDD mode channel, gather channel information by upward signal, apply to descending in, alleviated the burden of user side.In addition, by the unit of this resource allocation of sub carrier group, to anti-fading ability with reduce inter-user interference and compromise.And the quantity that comprises subcarrier in the carrier wave set can change, and strengthened the flexibility of resource allocation; And the main principle of data class user distributing carrier wave group be the selective channel quality preferably, optimized channel capacity.
The present invention can dynamically adjust the modulation system of resource allocation and different user in addition.The broadcasting of method of adjustment only takies the carrier wave that keeps in advance, does not influence transfer of data.For the major part fine setting, only need a descending time slot to finish, the response time is very short.
After system determined user's business and renewal frequency at the MAC layer, the information that resource allocation only need be used physical layer was just passable, only need increase simple scheduling at the MAC layer, need not the realization of hardware.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1. the method for a sub carrier group resource allocation is characterized in that, comprising:
A, network side are estimated that according to upward signal the channel quality that obtains is that the user with different service quality qos requirement selects the sub carrier group of respective channel quality, and are distributed to described user;
Add fashionablely as new user, described steps A specifically comprises:
A1, network side judge that according to the quality of services for users qos requirement described user still is the data class user for the general category user, and wherein: the user that service quality QoS requirements is low is the general category user, and the user that service quality QoS requirements is high is the data class user;
If described user is the general category user, then never by in the set of the idle sub-carrier group of all data class CUs, and, do not select the sub carrier group that it is had best channel qualities, distribute to described general category user by in the sub carrier group of other general category CU; If described user is the data class user, is then never selected the sub carrier group that it is had best channel qualities in the set of the idle sub-carrier of all data class CUs, and distributed to described data class user;
B, the described user's of broadcasting subcarrier information and idle sub-carrier information;
C, the described user sub carrier group resource shared according to described broadcast information updating oneself.
2. method according to claim 1 is characterized in that, comprises before described steps A:
Network side carries out channel quality estimation according to user's upward signal, and estimation is obtained described quality of channel information mapping to down channel.
3. method according to claim 1 is characterized in that, when newly adding access customer and be the data class user, also comprises:
For described data class user is provided with counter, and be that described counter is provided with corresponding initial value according to described data class quality of services for users qos requirement.
4. method according to claim 3 is characterized in that, in communication process, described steps A also comprises:
A2, variety classes user's sub carrier group resource is redistributed.
5. method according to claim 4 is characterized in that, when the user was the data class user, described steps A 2 specifically comprised:
A21, network side detect the counter of each data class user correspondence automatically, when the numeral in finding described counter is not " 0 ", then its count value is subtracted 1, and when described count value is " 0 ", according to the quality of channel information of estimating to obtain, concentrate the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it is distributed to described data class user; After assigning, described counter is reverted to initial value, continue execution in step A21 then;
Or,
A22, the quality of channel information that periodically obtains according to estimation are concentrated the top-quality sub carrier group of selective channel in current shared carrier wave set of described data class user and the unappropriated idle carrier wave set union of sets of all data class users, and it are distributed to described data class user.
6. method according to claim 4 is characterized in that, when the user was the general category user, described steps A 2 specifically comprised:
Described general category user is not in by the set of the idle sub-carrier group of all data class CUs, automatically it is mobile to circulate forward or backward by the mode of frequency hopping all sub carrier group that it is shared, and Moving Unit is the integral multiple of the width of its shared carrier wave set.
7. method according to claim 6 is characterized in that:
The width of described carrier wave set is to determine according to the quantity of the quantity of the available subcarrier that can distribute to all users and carrier wave set.
8. method according to claim 1 is characterized in that, described steps A also comprises:
A3, the quantity of the shared sub carrier group of the user of different service quality qos requirement is dynamically adjusted.
9. method according to claim 8 is characterized in that, described steps A 3 specifically comprises:
When needs increase the quantity of the shared sub carrier group of data class user, distribute to described data class user then according to the channel quality information of estimating to obtain top-quality sub carrier group of selective channel from idle carrier wave set set, and with it;
Or,
When needs reduce the quantity of the shared sub carrier group of data class user, from the shared sub carrier group of described data class user, remove the sub carrier group that to delete;
Or,
When needs increase the quantity of the shared sub carrier group of general category user, the sub carrier group that selection is not taken by other domestic consumer in the set of idle sub-carrier group, and distribute to described domestic consumer;
Or,
When needs reduce the quantity of the shared sub carrier group of general category user, from the shared sub carrier group of described general category user, remove the sub carrier group that to delete.
10. method according to claim 1 is characterized in that, described steps A also comprises:
Network side is determined described user's modulation system according to the channel quality of distributing to described user's sub carrier group.
11. method according to claim 1 is characterized in that, when the described user who is assigned with the sub carrier group resource was the data class user, described step C specifically comprised:
Described data class user gets access to its sub carrier group that takies from system broadcast message after, from the orthogonal frequency division multiplex OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of described information updating of obtaining; And,
The general category user of network side gets access to the idle sub-carrier group from system broadcast information, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
12. method according to claim 1 is characterized in that, when the described user who is assigned with the sub carrier group resource was the general category user, described step C specifically comprised:
Described general category user gets access to idle sub-carrier group and its shared subcarrier from system broadcast information, from the orthogonal frequency division multiplex OFDM symbol, take out the data on the sub carrier group oneself take, and with its original canned data on local device of the information updating of the described idle sub-carrier group that gets access to.
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| CN101483828B (en) * | 2008-01-11 | 2010-10-27 | 大唐移动通信设备有限公司 | Terminal equipment and method, communication system and apparatus for implementing communication between network sides |
| CN101350660B (en) * | 2008-07-22 | 2012-08-29 | 京信通信系统（中国）有限公司 | Digital RF far-drawing system and method for controlling standby carrier channel thereof |
| US8654753B2 (en) * | 2008-08-26 | 2014-02-18 | Qualcomm Incorporated | Multichannel TDMA mechanism |
| CN101998641A (en) * | 2009-08-18 | 2011-03-30 | 中兴通讯股份有限公司 | Carrier aggregation method and device for long term evolution (LTE) system |
| CN101998645A (en) * | 2009-08-19 | 2011-03-30 | 中兴通讯股份有限公司 | Carrier selection method and device |
| CN102104855A (en) * | 2009-12-17 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for upgrading system messages |
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