CN101815304B - Method and equipment for processing intermediate frequency band resources of relay system - Google Patents
Method and equipment for processing intermediate frequency band resources of relay system Download PDFInfo
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- CN101815304B CN101815304B CN200910078541.5A CN200910078541A CN101815304B CN 101815304 B CN101815304 B CN 101815304B CN 200910078541 A CN200910078541 A CN 200910078541A CN 101815304 B CN101815304 B CN 101815304B
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Abstract
The invention discloses a method and equipment for processing intermediate frequency band resources of a relay system. The method comprises the following steps of: determining frequency bands used by a relay node for receiving data; and arranging guard intervals among subframes of sent data and received data of the relay node in the frequency bands used by the relay node for receiving the data. The method and the equipment not only can avoid interference between downlink/uplink data at the relay node, but also can reduce waste of the frequency band resources because the guard intervals only occupy partial frequency bands.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of processing method of intermediate frequency band resources of relay system and equipment.
Background technology
Fig. 1 is the wireless frame structure schematic diagram that relaying place comprises multiple protection interval; as shown in the figure; at LTE (Long Term Evolution; Long Term Evolution) TDD (Time division duplex; time division duplex) in system, the structure of a radio frames is illustrated in figure 1:
The field (half-frame) of two 5ms is had in the radio frames of a 10ms; each field comprises again the subframe (subframe) of 5 1ms; a common subframe can be divided into the normal slot (slot) of two 0.5ms; a special subframe (S) is by 3 special time slot DwPTS (Downlink Pilot Time Slot; descending pilot frequency time slot), GP (guard period; protection interval) and UpPTS (Uplink Pilot Time slot, uplink pilot time slot) composition.
Two 5ms fields in a radio frames can be two identical field structure as shown in Figure 1, namely, 5ms is the frame structure in cycle, the configuration of its up-downgoing pilot time slot can have several as follows: 1DL: 3UL, 2DL: 2UL, 3DL: 1UL, wherein: DL is descending pilot frequency time slot, UL is upper shape pilot time slot.In addition the utilance of Radio Resource and the compatibility of different frame structure is considered, two 5ms fields also can be different frame structures, a field is only had to have the special time slot of 1ms (S), the special time slot of 5ms can flexible configuration be up-downgoing data slot in addition, namely be the frame structure in cycle with 10ms, the configuration of its uplink and downlink timeslot can have several as follows: 6DL: 3UL, 7DL: 2UL, 8DL: 1UL, 3DL: 5UL, and these 7 kinds of uplink/downlink frames structural allocation are as shown in the table.
Wherein, in table, S represents special subframe, D represents descending sub frame, U position sub-frame of uplink.
For the TDD system of LTE, have GP between downlink transfer and uplink in often kind of configuration structure.
At present based in Long Term Evolution (LTE-A) system of the advanced person of Relay (relaying), introduce RN (Relay Node, via node), in each radio half frame structure of the LTE-A tdd frame structure based on Relay, there is following time slot region:
Descending access region (TX): RN adopts this region that the data of eNB (evolution base station) are sent to UE (User Equipment, subscriber equipment);
Multi-upstream access region (RX): UE adopts this region to send the data to RN;
Up Mixed Zone (TX): RN adopts this region to send data to eNB;
Down mixing region (RX): eNB adopts this region to send data to RN.
That is: accessing region has UE to participate in, and Mixed Zone has eNB to participate in.For RN, between the region that it sends data/reception data transaction, need GP (guard period, protection interval).
As seen from Figure 1, eNB has one to protect interval between DwPTS and UpPTS, and for via node, it sends data and to receive between data transaction darker regions as shown in Figure 1, and one also must be had to protect interval.
Fig. 2 sends the schematic diagram protecting interval between data/reception data; as shown in the figure; the protection interval used in existing lte-a system occupies whole frequency band; but; consider the frame structure of eNB; if there is not protection interval at eNB place, the mutual interference between descending/upstream data just can not be avoided.
In sum; the deficiencies in the prior art are: at present based in the lte-a system of Relay after introducing RN; in the frame structure of via node; due between downlink transfer and uplink GP configuring scheme in the protection interval that adopts occupy whole frequency band, thus waste the utilization of band resource.
Summary of the invention
The invention provides a kind of processing method and equipment of intermediate frequency band resources of relay system, in order to solve the problem of the band resource waste existed during GP configuring between downlink transfer and uplink in prior art.
Provide a kind of processing method of intermediate frequency band resources of relay system in the embodiment of the present invention, comprise the steps:
Determine the frequency band that via node reception data use;
In the frequency band that via node reception data use, send between data and the subframe receiving data at via node and GP is set.
Preferably, described transmission between data and the subframe receiving data at via node arranges protection interval, is specially:
Via node is received n symbol before in the frequency band that data use and be set to blank.
Preferably, described transmission between data and the subframe receiving data at via node arranges protection interval, is specially:
Rear n the symbol sent by via node in the frequency band that data use is set to blank.
Preferably, n symbol in described frequency band is n OFDM (Orthogonal FrequencyDivision Multiplex, the OFDM) symbol of frequency band.
Preferably, the span of described n is: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
Provide a kind for the treatment of facility of intermediate frequency band resources of relay system in the embodiment of the present invention, comprising:
Band determination module, for determining the frequency band that via node reception data use;
Frequency band processing module, for receiving in the frequency band that uses of data at via node, sending between data and the subframe receiving data at via node and arranging GP.
Preferably, described frequency band processing module be further used for via node send between data and the subframe receiving data, GP is set time, via node is received n symbol before in the frequency band that data use and is set to blank.
Preferably, described frequency band processing module be further used for via node send protection interval is set between data and the subframe receiving data time, rear n the symbol sent by via node in the frequency band that data use is set to blank.
Preferably, described frequency band processing module is further used for the n of a frequency band OFDM symbol to be set to blank.
Preferably, described frequency band processing module is further used for determining that the span of n is: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
Beneficial effect of the present invention is as follows:
The present invention in force, in the frequency band that via node reception data use, sends between data and the subframe receiving data at via node and arranges GP.Owing to only sending between data and the subframe receiving data at via node, GP is set; be exactly on partial-band, be only configured with protection interval; therefore the interference at via node place between descending/upstream data can not only be avoided; also because protection interval only takies partial-band, thus decrease the waste of band resource.
Accompanying drawing explanation
Fig. 1 is the wireless frame structure schematic diagram that in prior art, relaying place comprises multiple protection interval;
Fig. 2 sends the schematic diagram protecting interval between data/reception data in prior art;
Fig. 3 is the processing method implementing procedure schematic diagram of intermediate frequency band resources of relay system in the embodiment of the present invention;
Fig. 4 is the frequency band schematic diagram after processing band resource in relay system in the embodiment of the present invention;
Fig. 5 is the treatment facility structural representation of intermediate frequency band resources of relay system in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
After introducing RN in based on the lte-a system of Relay, in the place of sending/receiving data transaction, need the GP adding certain length to avoid the mutual interference between descending/upstream data.The blank of partial-band will be adopted in the embodiment of the present invention as protection interval, thus not only avoid and whole frequency band is all used as protection interval, reduce the waste of resource; Simultaneously also for some can not GP configuring when, the GP of configuration section frequency band can provide technical scheme.
Concrete, in prior art, due to current proposed solution, main consideration is the protection interval of configuration Whole frequency band, specifically as shown in Figure 2.And via node due to need in the different moment to receive from eNB and cover the data of UE; simultaneously also will give to eNB and institute cover UE transmission data; and in sending/receiving data burst transfer process; in order to avoid the interference sending data and receive between data; thus to add protection interval, below the scheme of adding protection interval in the invention process is described.
Fig. 3 is the processing method implementing procedure schematic diagram of intermediate frequency band resources of relay system, as shown in the figure, when processing band resource, can comprise the steps:
Step 301, determine that via node receives the frequency band that uses of data;
Step 302, receive in the frequency band that uses of data at via node, send between data and the subframe receiving data at via node and protection interval is set.
Fig. 4 is the frequency band schematic diagram after processing band resource in relay system, as shown in the figure, up Mixed Zone/descending access region (TX) that the frequency band that via node transmission data use is illustrated for left side oblique line, eNB sends to UE the eNB downlink data sending zone that several used frequency band is top, the right, down mixing region/multi-upstream access region (RX) that the frequency band that in step 301, determined via node reception data use is illustrated with point-like for bottom, the right.The frequency band that visible via node transmission data use and eNB send several used frequency band to UE and keep continuous; send the frequency band that uses of data and via node at via node to receive in the frequency band that data use and be provided with a region illustrated with blank; it is GP region; in the protection separation band of via node blank, eNB and provide the UE of relay services all can not send data.
As seen from Figure 4, at via node place, up Mixed Zone/descending access region is the band region that via node sends data, at the nearby frequency bands area part of two thereafter, one is eNB downlink data sending zone, and it is that eNB sends the band region of data to UE; One is down mixing region/multi-upstream access region, and it is the band region that via node receives data.In concrete enforcement, the data sent to UE and RN due to eNB are separated; The frequency band that eNB sends data to UE, RN is unidirectional, can not receive and dispatch simultaneously; And UE is when sending data to RN and eNB, it is the UE of RN that UE needs to distinguish, or the UE of the UE of eNB, RN only communicates with RN, and the UE of eNB only communicates with eNB.Therefore, through above-mentioned to the process of band resource after, for eNB, its frequency band sending data to UE is separated from each other with the frequency band sending data to via node, in the frequency band to UE transmission data, concrete mode is constant, can see the execution specification of prior art; Send the frequency band of data for via node, just consider the needs at protection interval, thus when processing band resource by part resource blank out, and it can be used as protection interval.
In enforcement, when between the subframe that via node sends data and reception data, GP is set, be specifically as follows:
Via node is received n symbol before in the frequency band that data use and be set to blank.
Or, when also protection interval can be set between the subframe that via node sends data and reception data, be specially:
Rear n the symbol sent by via node in the frequency band that data use is set to blank.
Concrete, n symbol in frequency band can be n OFDM symbol of frequency band.
Like this, when n symbol of the frequency band taken by via node is available as protection interval, the interference between descending/upstream data can just be avoided; Send the band region of data at eNB to UE, and without configuration protection interval, the frequency band that this frequency band and via node take carries out frequency division multiplexing, there is not interference problem each other.
By the way; before only needing that via node is received data area frequency band, several symbol is available; on partial-band, the interference at via node place between descending/upstream data just can be avoided in configuration protection interval exactly; and protect interval also only to take partial-band, thus decrease the waste of band resource.
In enforcement, the span of n can be: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
Just can ensure not interference between sending/receiving data by above-mentioned value, the length of GP is also the shortest simultaneously, further avoids the waste to resource.
Based on same inventive concept, a kind for the treatment of facility of intermediate frequency band resources of relay system is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to these equipment is similar to the processing method of intermediate frequency band resources of relay system, therefore the enforcement of these equipment see the enforcement of method, can repeat part and is not repeating.
Fig. 5 is the treatment facility structural representation of intermediate frequency band resources of relay system, as shown in the figure, can comprise in treatment facility:
Band determination module 501, for determining the frequency band that via node reception data use;
Frequency band processing module 502, for receiving in the frequency band that uses of data at via node, sending between data and the subframe receiving data at via node and arranging GP.
In enforcement, described frequency band processing module can be further used for via node send between data and the subframe receiving data, GP is set time, via node is received n symbol before in the frequency band that data use and is set to blank.
Described frequency band processing module also can be further used for via node send protection interval is set between data and the subframe receiving data time, rear n the symbol sent by via node in the frequency band that data use is set to blank.
Frequency band processing module can also be further used for the n of a frequency band OFDM symbol to be set to blank.
Frequency band processing module also can be further used for determining that the span of n is: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
For convenience of description, each several part of the above device is divided into various module or unit to describe respectively with function.Certainly, the function of each module or unit can be realized in same or multiple software or hardware when implementing of the present invention.
From above-mentioned enforcement; one is needed to protect interval to the interference problem between the sending/receiving data avoiding via node place for the via node place in relay system; in order to avoid the wasting of resources of Whole frequency band; have employed the blank of partial-band as protection interval; avoid the deficiency whole frequency band being all used as protection interval; concrete, can only at the protection interval of frequency band place configuration n the symbol that via node uses.Achieve can ensure sending/receiving data between noiseless, also can avoid the interference between frequency band, also save resource simultaneously, improve the utilance of band system band; Also for some can not GP configuring when, the GP of configuration section frequency band can provide solution.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a processing method for intermediate frequency band resources of relay system, is characterized in that, comprises the steps:
Determine the frequency band that via node reception data use, described via node reception data send data with base station to subscriber equipment and use identical time-domain resource region, different frequency domain resource regions;
Only receive in the frequency band that uses of data at via node, send between data and the subframe receiving data at via node and protection interval is set.
2. the method for claim 1, is characterized in that, described transmission between data and the subframe receiving data at via node arranges protection interval, is specially:
Via node is received n symbol before in the frequency band that data use and be set to blank.
3. the method for claim 1, is characterized in that, described transmission between data and the subframe receiving data at via node arranges protection interval, is specially:
Rear n the symbol sent by via node in the frequency band that data use is set to blank.
4. method as claimed in claim 2 or claim 3, it is characterized in that, n symbol in described frequency band is n orthogonal frequency division multiplex OFDM symbol of frequency band.
5. method as claimed in claim 4, it is characterized in that, the span of described n is: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
6. a treatment facility for intermediate frequency band resources of relay system, is characterized in that, comprising:
Band determination module, for determining the frequency band that via node reception data use, described via node reception data send data with base station to subscriber equipment and use identical time-domain resource region, different frequency domain resource regions;
Frequency band processing module, for only receiving in the frequency band that uses of data at via node, sending between data and the subframe receiving data at via node and arranging protection interval.
7. treatment facility as claimed in claim 6; it is characterized in that; described frequency band processing module be further used for via node send protection interval is set between data and the subframe receiving data time, via node is received n symbol before in the frequency band that data use and is set to blank.
8. treatment facility as claimed in claim 6; it is characterized in that; described frequency band processing module be further used for via node send protection interval is set between data and the subframe receiving data time, rear n the symbol sent by via node in the frequency band that data use is set to blank.
9. treatment facility as claimed in claim 7 or 8, it is characterized in that, described frequency band processing module is further used for the n of a frequency band OFDM symbol to be set to blank.
10. treatment facility as claimed in claim 9, it is characterized in that, described frequency band processing module is further used for determining that the span of n is: n × T × c >=2 × R; Wherein:
T is OFDM symbol time span, and c is the light velocity, and R is the service range radius of via node.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005305A (en) * | 2006-01-17 | 2007-07-25 | 上海原动力通信科技有限公司 | Transmitting method for time division duplex mobile communication system |
| CN101079665A (en) * | 2006-05-23 | 2007-11-28 | 大唐移动通信设备有限公司 | A method for expanding coverage scope of time-division duplex system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101005305A (en) * | 2006-01-17 | 2007-07-25 | 上海原动力通信科技有限公司 | Transmitting method for time division duplex mobile communication system |
| CN101079665A (en) * | 2006-05-23 | 2007-11-28 | 大唐移动通信设备有限公司 | A method for expanding coverage scope of time-division duplex system |
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