CN101202578A - Method and system for transmitting data in quartered frequency-division multiplex system - Google Patents
Method and system for transmitting data in quartered frequency-division multiplex system Download PDFInfo
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- CN101202578A CN101202578A CNA2006101651363A CN200610165136A CN101202578A CN 101202578 A CN101202578 A CN 101202578A CN A2006101651363 A CNA2006101651363 A CN A2006101651363A CN 200610165136 A CN200610165136 A CN 200610165136A CN 101202578 A CN101202578 A CN 101202578A
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Abstract
The invention discloses a method for transmitting data in an orthogonal frequency division multiplexing system. The method includes: A, a base station distributes a dispatching frequency band to each user; B, the base station sends control information and data simultaneously to the user devices in the dispatching frequency band through the dispatching frequency band. The invention solves the problem of dispatching time delay existed in the prior art when an OFDM system transmits control information and data. The invention simultaneously discloses a system for transmitting data in the orthogonal frequency division multiplexing system.
Description
Technical field
The present invention relates to the mobile communication technology field, the method and system of transmission data in particularly a kind of orthogenic frequency-division multiplexing system.
Background technology
In Orthodoxy Frequency Division Multiplex (OFDM) mobile communication system, all subscriber equipmenies (UE) shared system bandwidth uses shared channel to carry out the transmission of data, before each UE receives data, according to loaded information on the shared control channel of receiving, receive the also information of deal with data channel; Before each UE sends data, send dispatch request to network, the scheduling grant signaling according to the network side that receives sends judges whether to send data.
In the ofdm system, the control channel of down direction mainly comprises two classes: a class is used for bearing downlink control signaling, be called the descending scheduling signaling channel, the DSCH Downlink Shared Channel (DL-SCH) of promptly indicating UE to receive is gone up the relevant information of data carried by data, as modulation system, redundancy versions, send diversity mode or the like, the control signaling relevant with downlink signaling is divided into 3 classes, first kind scheduling control signaling needs independent the transmission, to make things convenient for all UE that are in linking status in the system to monitor, second class and the 3rd class control signaling are dedicated control signaling associated with the data, can send together with data; Another kind of down control channel is mainly used in the transmission scheduling grant, is called the uplink scheduling grant channel, promptly notifies the UE that is scheduled can use which ascending resource to carry out data and sends.
In the present ofdm system, exist the different UE that receive bandwidth ability, if the descending minimum reception bandwidth ability of UE is 15MHz, the bandwidth ability that minimum data is handled is 10MHz, then when system bandwidth is 20MHz, exist in the system to receive the UE of bandwidth, so network side is according to the quantity of UE in the system bandwidth less than system bandwidth, physical resource quantity that control channel need take or the like is configured in control channel on certain position of resource frequency band.
If network side is by control channel and data channel, control information and data are sent together, then all receive bandwidth all receive near the bandwidth control channel simultaneously less than the UE of system bandwidth signal in the ofdm system, and no longer the interior bandwidth of UE range of receiving can not get better utilization, strengthen the load of network like this, reduced the utilance of network.
If network side sends control information by control channel earlier, send data at next frame by data channel, UE is according to the control information of receiving, judge that the data that receive if desired are no longer in self range of receiving, then frequency hopping receives data, and the load that has so just alleviated network has improved the utilance of network, but control information and data do not send at same frame, thereby have caused the scheduling time delay.
In addition, for broadband system, when the identical networking of each sub-district, if all UE dispatch on identical frequency band, then presence of intercell interference is inevitable very big, and power system capacity can be limited because disturb.
In sum, send control information and data in the ofdm system at present, can cause the scheduling time delay, strengthened the load of network, reduced the utilance of network, and be unfavorable for Inter-Cell Interference Coordination, excessive interference can reduce power system capacity.
Summary of the invention
The invention provides the method and system of transmission data in a kind of orthogenic frequency-division multiplexing system, when sending control information with data in the ofdm system, have the problem of scheduling time delay in order to exist in the solution prior art.
The method of transmission data in a kind of orthogenic frequency-division multiplexing system, system bandwidth comprises at least two dispatch frequency ranges, this method comprises:
A, base station are dispatch frequency range of each user equipment allocation;
B, base station send control information and data to the subscriber equipment that is in this dispatch frequency range simultaneously by described dispatch frequency range.
In the steps A, described base station is the user equipment allocation dispatch frequency range according to the subscriber equipment reception bandwidth that obtains and the ability of deal with data.
The ability that described subscriber equipment receives bandwidth and deal with data is that described base station obtains from the high-level signaling of receiving from subscriber equipment; Or described base station obtains from the described subscriber equipment of self preserving receives the ability of bandwidth and deal with data.
In the steps A, described base station is distributed to subscriber equipment with dispatch frequency range and is also comprised:
Send frequency hopping information to subscriber equipment, described frequency hopping information comprises the frequency of dispatch frequency range;
Then subscriber equipment is according to the frequency of the dispatch frequency range in the frequency hopping information of receiving, frequency hopping is to the dispatch frequency range of correspondence.
Described each dispatch frequency range disposes one or more control channels and data channel respectively, perhaps a plurality of control channels of dispatch frequency range configuration and data channel, then among the step B, described base station is to send control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by the control channel of described dispatch frequency range and data channel.
The system of transmission data in a kind of orthogenic frequency-division multiplexing system, system bandwidth comprises at least two dispatch frequency ranges, this system comprises:
The base station is used to dispatch frequency range of each user equipment allocation, sends control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by described dispatch frequency range;
Subscriber equipment is used for after dispatch frequency range receives control information and data, checks according to control information whether self is scheduled, and when self is scheduled, handles receiving data.
Described base station comprises:
Distribution module is used to dispatch frequency range of each user equipment allocation;
First sending module is used for sending control information simultaneously and data to the subscriber equipment that is in this frequency band by described dispatch frequency range.
Described distribution module is the user equipment allocation dispatch frequency range according to the subscriber equipment reception bandwidth that obtains and the ability of deal with data.
The ability that described subscriber equipment receives bandwidth and deal with data is that described distribution module obtains from the high-level signaling of receiving from subscriber equipment; Or described distribution module obtains from the described subscriber equipment of self preserving receives the ability of bandwidth and deal with data.
Described each dispatch frequency range disposes one or more control channels and data channel respectively, perhaps a plurality of control channels of dispatch frequency range configuration and data channel, then described first sending module is to send control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by the control channel of described dispatch frequency range and data channel.
Described base station can also comprise:
Second sending module is used for sending frequency hopping information to subscriber equipment, and described frequency hopping information comprises the frequency of dispatch frequency range;
Then described subscriber equipment also comprises:
The frequency hopping module is used for the frequency according to the dispatch frequency range of the frequency hopping information of receiving, frequency hopping is to the dispatch frequency range of correspondence.
A kind of base station, this base station comprises:
Distribution module is used to subscriber equipment that system bandwidth is provided, and described system bandwidth comprises at least two dispatch frequency ranges, is dispatch frequency range of each user equipment allocation;
First sending module is used for sending control information simultaneously and data to the subscriber equipment that is in this frequency band by described dispatch frequency range.
Described base station also comprises:
Second sending module is used for sending frequency hopping information to subscriber equipment, and described frequency hopping information comprises the frequency of dispatch frequency range.
The present invention is divided at least two dispatch frequency ranges with system bandwidth, for each dispatch frequency range disposes control channel and data channel respectively, to dispatching on the different frequency band of different user equipment allocation, by control channel on the dispatch frequency range and data channel control information and data are sent to subscriber equipment together, thereby eliminated the scheduling time delay, alleviate the load of network, improved network utilization, reduced presence of intercell interference.
Description of drawings
The connection block diagram that Fig. 1 forms for system of the present invention;
The structural representation that Fig. 2 forms for base station of the present invention;
Fig. 3 A is divided into system bandwidth for the present invention the schematic diagram of two dispatch frequency ranges;
Fig. 3 B is the schematic diagram of the dispatch frequency range of configuration UE of the present invention;
Fig. 4 is for realizing the schematic flow sheet of the inventive method;
Fig. 5 is the schematic flow sheet of the embodiment of the invention one;
Fig. 6 is the schematic flow sheet of the embodiment of the invention two.
Embodiment
At in ofdm system, transmitting control channel information at present and during data, the problem that has the scheduling time delay, the present invention is divided at least two dispatch frequency ranges with system bandwidth, each dispatch frequency range is disposed control channel and data channel respectively, by control channel on the dispatch frequency range and data channel control information and data are sent together, thereby solved the problems referred to above.
The connection block diagram that Fig. 1 forms for system of the present invention.As shown in Figure 1, system of the present invention comprises: base station 10 and UE 20.
Base station 10 with UE 20 wireless connections, is used to each UE 20 to distribute a dispatch frequency range, sends frequency hopping information to subscriber equipment, sends control information simultaneously and data to the UE 20 that is in this dispatch frequency range by described dispatch frequency range.
System bandwidth comprises at least two dispatch frequency ranges, and the method that then system bandwidth is divided at least two dispatch frequency ranges comprises:
With the bandwidth of system bandwidth divided by the subscriber equipment reception that receives the bandwidth ability minimum in the system, with the numerical value round numbers that obtains, with the quantity of this integer, have at least a dispatch frequency range bandwidth to equal to receive in the sub-district reception bandwidth of the subscriber equipment of bandwidth ability minimum in the dispatch frequency range of division as dispatch frequency range; Perhaps at random system bandwidth is divided at least two dispatch frequency ranges.
Each dispatch frequency range can dispose one or more control channels and data channel, perhaps a plurality of control channels of dispatch frequency range configuration and data channel, base station 10 can send control information and data to the UE that is in this dispatch frequency range by the control channel and the data channel of dispatch frequency range.
The frequency that comprises dispatch frequency range in the frequency hopping information.
UE 20, with base station 10 wireless connections, are used for after dispatch frequency range receives control information and data, check according to control information whether self is scheduled, and when self is scheduled, handle receiving data; When having data to send, send 10 to the base station and send a request message, according to the Indication message of the uplink scheduling grant channel of receiving, frequency hopping sends data to corresponding dispatch frequency range.
Wherein, UE 20 also comprises frequency hopping module 200.
The frequency hopping module is used for the frequency according to the dispatch frequency range of the frequency hopping information of receiving, frequency hopping is to the dispatch frequency range of correspondence.
The structural representation that Fig. 2 forms for base station of the present invention.As shown in Figure 3, base station 10 of the present invention comprises: distribution module 100 and sending module 110.
First sending module 110 with UE 20 wireless connections, is connected with distribution module 100, after being used to receive assignment messages, sends control information simultaneously and data to the subscriber equipment that is in this frequency band by described dispatch frequency range.
Fig. 3 A is divided into system bandwidth for the present invention the schematic diagram of two dispatch frequency ranges.As shown in Figure 3A,
System bandwidth is 20MHz, this system bandwidth is divided into two dispatch frequency ranges, the bandwidth of each dispatch frequency range is 10MHz, on each dispatch frequency range, dispose control channel and data channel respectively, for UE distribution dispatch frequency range separately, send control information simultaneously and data to the UE of this frequency band by control channel in the dispatch frequency range and data channel.
With the UE separated into two parts that concentrates in together, each dispatch frequency range works independently like this, and the UE of different receiving abilities can receive the information of control channel and the data of data channel simultaneously on different dispatch frequency ranges.
If need to adjust the dispatch frequency range of certain UE in communication process, then the base station reconfigures UE by high-level signaling.
Fig. 3 B is the schematic diagram of the dispatch frequency range of configuration UE of the present invention.Shown in Fig. 3 B,
The mode of a kind of preferable distribution UE be the base station according to the ability that UE receives bandwidth and deal with data, be the user equipment allocation dispatch frequency range.When UE is connected with the base station, UE need send Radio Resource to the base station and insert request, the base station obtains the reception bandwidth of UE and the ability of deal with data according to the high-level signaling received, perhaps obtains from the UE that self preserves receives the ability of bandwidth and deal with data, thereby distributes to the UE dispatch frequency range.
Comprise the dispatch frequency range of a 10MHz and the dispatch frequency range of a 20MHz among the figure in the system, the dispatch frequency range of 10MHz can only the interior reception of dispatching patcher bandwidth ability be the UE of 10MHz, and the dispatch frequency range of 20MHz can the interior all UE of dispatching patcher.Base station assigns has for 10MHz dispatch frequency range and 20MHz dispatch frequency range to be used to control channel of dispatching and the data channel that sends data separately.On resource, the physical resource that the dispatch frequency range of 10MHz takies is the part of 20MHz dispatch frequency range, when the resource on the 10MHz dispatch frequency range was not used fully, the base station can be given the scheduling of resource that does not have on the 10MHz dispatch frequency range to utilize had the UE that 20MHz receives bandwidth ability.
Fig. 4 is for realizing the schematic flow sheet of the inventive method.As shown in Figure 4, the inventive method comprises the following steps:
A dispatch frequency range is distributed for each UE in step 401, base station.
Fig. 5 is the schematic flow sheet of the embodiment of the invention one.As shown in Figure 5, present embodiment one comprises the following steps:
A dispatch frequency range is distributed for each UE in step 501, base station.
Fig. 6 is the schematic flow sheet of the embodiment of the invention two.As shown in Figure 6, present embodiment two comprises the following steps:
A dispatch frequency range is distributed for each UE in step 601, base station.
After request message is received in step 606, base station,,, send the indication information of up grant channel to this UE for UE distributes a up channel according to the situation of up channel carrying.
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.
Claims (13)
1. the method for transmission data in the orthogenic frequency-division multiplexing system is characterized in that system bandwidth comprises at least two dispatch frequency ranges, and this method comprises:
A, base station are dispatch frequency range of each user equipment allocation;
B, base station send control information and data to the subscriber equipment that is in this dispatch frequency range simultaneously by described dispatch frequency range.
2. the method for claim 1 is characterized in that, in the steps A, described base station is the user equipment allocation dispatch frequency range according to the subscriber equipment reception bandwidth that obtains and the ability of deal with data.
3. method as claimed in claim 2 is characterized in that, the ability that described subscriber equipment receives bandwidth and deal with data is that described base station obtains from the high-level signaling of receiving from subscriber equipment; Or described base station obtains from the described subscriber equipment of self preserving receives the ability of bandwidth and deal with data.
4. the method for claim 1 is characterized in that, in the steps A, described base station is distributed to subscriber equipment with dispatch frequency range and also comprised:
Send frequency hopping information to subscriber equipment, described frequency hopping information comprises the frequency of dispatch frequency range;
Then subscriber equipment is according to the frequency of the dispatch frequency range in the frequency hopping information of receiving, frequency hopping is to the dispatch frequency range of correspondence.
5. the method for claim 1, it is characterized in that, described each dispatch frequency range disposes one or more control channels and data channel respectively, perhaps a plurality of control channels of dispatch frequency range configuration and data channel, then among the step B, described base station is to send control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by the control channel of described dispatch frequency range and data channel.
6. the system of transmission data in the orthogenic frequency-division multiplexing system is characterized in that system bandwidth comprises at least two dispatch frequency ranges, and this system comprises:
The base station is used to dispatch frequency range of each user equipment allocation, sends control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by described dispatch frequency range;
Subscriber equipment is used for after dispatch frequency range receives control information and data, checks according to control information whether self is scheduled, and when self is scheduled, handles receiving data.
7. system as claimed in claim 6 is characterized in that, described base station comprises:
Distribution module is used to dispatch frequency range of each user equipment allocation;
First sending module is used for sending control information simultaneously and data to the subscriber equipment that is in this frequency band by described dispatch frequency range.
8. system as claimed in claim 7 is characterized in that, described distribution module is the user equipment allocation dispatch frequency range according to the subscriber equipment reception bandwidth that obtains and the ability of deal with data.
9. system as claimed in claim 8 is characterized in that, the ability that described subscriber equipment receives bandwidth and deal with data is that described distribution module obtains from the high-level signaling of receiving from subscriber equipment; Or described distribution module obtains from the described subscriber equipment of self preserving receives the ability of bandwidth and deal with data.
10. system as claimed in claim 7, it is characterized in that, described each dispatch frequency range disposes one or more control channels and data channel respectively, perhaps a plurality of control channels of dispatch frequency range configuration and data channel, then described first sending module is to send control information simultaneously and data to the subscriber equipment that is in this dispatch frequency range by the control channel of described dispatch frequency range and data channel.
11. system as claimed in claim 6 is characterized in that, described base station also comprises:
Second sending module is used for sending frequency hopping information to subscriber equipment, and described frequency hopping information comprises the frequency of dispatch frequency range;
Then described subscriber equipment also comprises:
The frequency hopping module is used for the frequency according to the dispatch frequency range of the frequency hopping information of receiving, frequency hopping is to the dispatch frequency range of correspondence.
12. a base station is characterized in that, this base station comprises:
Distribution module is used to subscriber equipment that system bandwidth is provided, and described system bandwidth comprises at least two dispatch frequency ranges, is dispatch frequency range of each user equipment allocation;
First sending module is used for sending control information simultaneously and data to the subscriber equipment that is in this frequency band by described dispatch frequency range.
13. base station as claimed in claim 12 is characterized in that, described base station also comprises:
Second sending module is used for sending frequency hopping information to subscriber equipment, and described frequency hopping information comprises the frequency of dispatch frequency range.
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| CN2006101651363A CN101202578B (en) | 2006-12-13 | 2006-12-13 | Method and system for transmitting data in quartered frequency-division multiplex system |
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| CN2006101651363A CN101202578B (en) | 2006-12-13 | 2006-12-13 | Method and system for transmitting data in quartered frequency-division multiplex system |
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| US6246713B1 (en) * | 1998-06-08 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Frequency-hopping in a bandwidth-on-demand system |
| CN100473225C (en) * | 2006-04-30 | 2009-03-25 | 中兴通讯股份有限公司 | Resource distributing method for asymmetric bandwidth ability radio network switch-in system |
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