CN102123492B - Method, system and equipment for configuring downlink subframes and receiving downlink data - Google Patents
Method, system and equipment for configuring downlink subframes and receiving downlink data Download PDFInfo
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- CN102123492B CN102123492B CN201110008501.0A CN201110008501A CN102123492B CN 102123492 B CN102123492 B CN 102123492B CN 201110008501 A CN201110008501 A CN 201110008501A CN 102123492 B CN102123492 B CN 102123492B
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Abstract
The invention relates to the technical field of wireless communication, in particular relating to a method, system and equipment for configuring downlink subframes and receiving downlink data in order to avoid configuring non-MBSFN (Multicast Broadcast Single Frequency Network) subframes as backhaul downlink subframes and solve the problem in the prior art that the transmission performance of an RN (relay node) cell is affected when the non-MBSFN subframes are configured as the backhaul downlink subframes. The method for configuring the downlink subframes provided by the embodiment of the invention comprises: a base station configures part or all of subframes in a downlink subframe set used for backhaul downlink transmission as the backhaul downlink subframes from a base station side according to the deviants of downlink transmission timing and downlink receiving timing of RN equipment. As the base station configures the backhaul downlink subframes according to the deviants of the downlink transmission timing and downlink receiving timing of the RN equipment, the non-MBSFN subframes are prevented from being configured as the backhaul downlink subframes.
Description
Technical field
The present invention relates to wireless communication technology field, particularly method, system and the equipment of a kind of configurating downlink subframe and downlink data receiving.
Background technology
LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system is introduced after Relay (relaying) node, defined with lower node, interface and link, as shown in Figure 1A,
Node comprises:
Donor-eNB: have the eNB of wireless connections with RN equipment, be abbreviated as DeNB;
Relay-Node: be present in the entity between DeNB and UE, be abbreviated as RN equipment;
Relay-UE: directly and the RN equipment UE that carries out data interaction, be abbreviated as R-UE;
Grand UE: directly and the DeNB UE that carries out data interaction.
Interface comprises:
Un interface: the interface between RN equipment and DeNB;
Interface between Uu interface: UE and RN equipment.
Wireless link comprises:
Backhaul link: back haul link, the link between base station and core net, comprises the link that Un interface is corresponding;
Access link: access link, the link corresponding with Uu interface;
Direct link: direct projection link, DeNB and grand UE carry out the link of transfer of data.
Introduce the downlink transfer after RN equipment: the data that arrive UE under RN equipment need to send to RN equipment through descending back haul link by DeNB, then through descending access link, send to UE by RN equipment.
Introduce the uplink after RN equipment: under RN equipment, the uplink of UE first sends to RN equipment by UE through uplink access link, then through back haul link, sends to DeNB by RN equipment.
On back haul link, for FDD system, RN equipment need to be at descending sub frame { 0,4, the terminal of serving to self in 5,9} sends synchronizing signal etc., and these subframes cannot be configured to downlink subframes in return link, these subframes are called non-MBSFN (non-MBSFN Multicast Broadcast Single Frequency Network, non--Multicast Broadcast Single Frequency Network) subframe; In TDD system, { 0,1,5,6} is non-MBSFN subframe to subframe.
The descending transmission of RN equipment regularly subframe determines by self, and when descending transmissions of RN equipment is when regularly between subframe and descending receptions timing subframe, existence is offset, the non-MBSFN subframe of RN side may be configured to downlink subframes in return link.
As shown in Figure 1B, the descending transmission timing subframe of RN equipment is offset 2 subframes backward with respect to the descending reception timing subframe of RN equipment, in a radio frames, if the subframe { 1,2,6 of DeNB configuration DeNB side, 7} is back haul link subframe, correspondingly, RN equipment is { 9,0 according to the definite downlink subframes in return link of descending reception timing, 4,5}, being about to non-MBSFN sub-frame configuration is downlink subframes in return link, thereby will affect the transmission performance of RN community.
Summary of the invention
The method and apparatus of a kind of configurating downlink subframe that the embodiment of the present invention provides, occurs in order to the situation that to avoid non-MBSFN sub-frame configuration be downlink subframes in return link.
The method of a kind of downlink data receiving that the embodiment of the present invention provides, system and equipment, be downlink subframes in return link in order to solve what exist in prior art by non-MBSFN sub-frame configuration, thereby will affect the problem of the transmission performance of RN community.
The method of a kind of configurating downlink subframe that the embodiment of the present invention provides, comprising:
The descending transmission regularly and the descending deviant regularly that receives of back haul link of access link that base station reports according to relaying RN equipment, determines that base station side can be used in the descending sub frame set of back haul link downlink transfer;
Described base station is downlink subframes in return link by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer;
Described RN equipment is notified by configuration information in described base station.
The method of a kind of downlink data receiving that the embodiment of the present invention provides, comprising:
RN equipment is determined the descending deviant that sends timing and the descending reception timing of back haul link of access link, and definite deviant is sent to base station;
Described RN equipment, according to the announcement information from described base station of receiving, is determined that base station is according to the downlink subframes in return link of described deviant configuration, and is received data by described downlink subframes in return link.
The equipment of a kind of configurating downlink subframe that the embodiment of the present invention provides, comprising:
Determination module, for descending the transmission regularly and the descending deviant regularly that receives of back haul link of access link reporting according to RN equipment, determines that base station side can be used in the descending sub frame set of back haul link downlink transfer;
Configuration module, for being downlink subframes in return link by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer;
Notification module, for notifying configuration information described RN equipment.
The equipment of a kind of downlink data receiving that the embodiment of the present invention provides, comprising:
Reporting module, sends regularly and the descending deviant that receives timing of back haul link for determining that access link is descending, and definite deviant is sent to base station;
Receiver module, for according to the announcement information from described base station of receiving, determines that base station is according to the downlink subframes in return link of described deviant configuration, and receives data by described downlink subframes in return link.
The system of a kind of downlink data receiving that the embodiment of the present invention provides, comprising:
Base station, for descending the transmission regularly and the descending deviant regularly that receives of back haul link of access link reporting according to RN equipment, determine that base station side can be used in the descending sub frame set of back haul link downlink transfer, by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer, be downlink subframes in return link, by configuration information, notify described RN equipment;
RN equipment, for determining that access link is descending, send regularly and the descending deviant regularly that receives of back haul link, and definite deviant is sent to base station, according to the announcement information from described base station of receiving, determine that base station is according to the downlink subframes in return link of described deviant configuration, and receive data by described downlink subframes in return link.
Because embodiment of the present invention base station sends regularly according to RN equipment descending and the descending deviant configuration downlink subframes in return link receiving regularly of RN equipment, thus the situation generation that to have avoided non-MBSFN sub-frame configuration be downlink subframes in return link.
Because RN equipment receives data by base station according to the downlink subframes in return link of deviant configuration, avoiding non-MBSFN sub-frame configuration is downlink subframes in return link, thereby avoids the impact of the transmission performance of DuiRN community; Further improve the reliability of the transmission performance of LiaoRN community.
Accompanying drawing explanation
Figure 1A is the structural representation of LTE-A system in background technology;
Figure 1B be DeNB and RN equipment in background technology downlink frame regularly and downlink subframes in return link configuration schematic diagram;
Fig. 2 is the system configuration schematic diagram of embodiment of the present invention downlink data receiving;
Fig. 3 is the structural representation of embodiment of the present invention base station;
Fig. 4 is the structural representation of embodiment of the present invention RN equipment;
Fig. 5 is the method flow schematic diagram of embodiment of the present invention configurating downlink subframe;
Fig. 6 is the method flow schematic diagram of embodiment of the present invention downlink data receiving;
Fig. 7 be embodiment of the present invention skew be 1 o'clock DeNB and RN equipment downlink frame regularly and downlink subframes in return link configuration schematic diagram;
Fig. 8 be embodiment of the present invention skew be 3 o'clock DeNB and RN equipment downlink frame regularly and downlink subframes in return link configuration schematic diagram;
Fig. 9 be embodiment of the present invention skew be 5 o'clock DeNB and RN equipment downlink frame regularly and downlink subframes in return link configuration schematic diagram.
Embodiment
Embodiment of the present invention base station is according to the descending descending deviant regularly that receives that sends timing and RN equipment of RN equipment, from base station side can be used in the descending sub frame set of back haul link downlink transfer configuration section or all subframe as downlink subframes in return link, and notify RN equipment by configuration information.Because embodiment of the present invention base station sends regularly according to RN equipment descending and the descending deviant configuration downlink subframes in return link receiving regularly of RN equipment, thus the situation generation that to have avoided non-MBSFN sub-frame configuration be downlink subframes in return link.
Embodiment of the present invention RN equipment sends to base station by the descending deviant that sends timing and the descending reception timing of back haul link of access link, by base station, according to the downlink subframes in return link of deviant configuration, receives data.Because RN equipment receives data by base station according to the downlink subframes in return link of deviant configuration, avoiding non-MBSFN sub-frame configuration is downlink subframes in return link, thereby avoids the impact of the transmission performance of DuiRN community.
Wherein, the descending transmission of access link is regularly that the UE that RN equipment is served to self sends the timing that data acquisition is used; It is regularly that RN equipment receives the timing that base station down data acquisition is used that back haul link receives.Specifically can be referring to agreement 3GPP TS36.213 and 3GPP TS 36.216.
In declarative procedure below, first from the cooperation of base station side and RN equipment side, implement to describe, finally from the enforcement of base station side and RN equipment side, describe respectively, but this does not also mean that the two must coordinate enforcement, in fact, when base station side and RN equipment side separate while implementing, also solved respectively in base station side, the existing problem of RN equipment side, when just the two is combined with, can obtain better technique effect.
As shown in Figure 2, the system of embodiment of the present invention downlink data receiving comprises the following steps: base station 10 and RN equipment 20.
Wherein, the descending sub frame set that base station side can be used in back haul link downlink transfer refers to base station 10 frames radio frames regularly, such as the DeNB frame timing in Fig. 7～Fig. 9;
Relative, the descending sub frame set that RN equipment side can be used in back haul link downlink transfer refers to the descending radio frames regularly that sends of RN equipment 20 access link, such as the descending transmission timing of the RN equipment access link in Fig. 7～Fig. 9.
The descending reception timing of back haul link and base station 10 frames timings identical (only having propagation delay time) due to RN equipment 20, and the descending transmission timing of access link and the descending reception of back haul link regularly have skew, so base station 10 frames timings and the descending transmission of RN equipment 20 access link also have identical skew surely.
Deviant is known in base station 10, when configuration downlink subframes in return link, just can avoid the non-MBSFN subframe of RN equipment to be mixed with downlink subframes in return link.
Concrete, base station 10 determines that RN equipment side can be used in the subframe set of back haul link downlink transfer, according to RN equipment side, can be used in subframe numbering and deviant in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
Known that RN equipment side can be used in the subframe set of back haul link downlink transfer, known again deviant, just can determine that base station side is used for the descending sub frame set of back haul link downlink transfer.
In force, due to deviant comprise positive and negative, so need regulation how to be offset into as what skew for negative.Here there are two kinds of modes:
Mode one, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for just; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for negative.
Take Fig. 7 as example, in identical numbering radio frames, the descending reception of back haul link subframe 0 regularly differs a subframe with the descending subframe 0 regularly that sends of access link, and the descending reception timing of back haul link after the descending transmission fixed response time of access link, so the definite deviant of RN equipment 20 is 1.
Accordingly, base station 10 can be used in RN equipment side each subframe numbering in the subframe set of back haul link downlink transfer and is added with deviant respectively, thereby obtains base station side for the descending sub frame set of back haul link downlink transfer.
Take Fig. 7 as example, the subframe set that RN equipment side can be used in back haul link downlink transfer be 1,2,3,6,7,8}, deviant is 1, base station side is { 2,3,4,7,8,9} for the descending sub frame set of back haul link downlink transfer.
In mode one, except base station 10 can be used in RN equipment side each subframe numbering in the subframe set of back haul link downlink transfer, be added and obtain base station side for the scheme of the descending sub frame set of back haul link downlink transfer with deviant respectively, can also be identified for by mode below the descending sub frame set of back haul link downlink transfer.
Take FDD system as example, and the set that RN equipment side can be configured to back haul link subframe is always { 1,2,3,6,7,8}, and in DeNB side, according to the difference of deviant, the subframe set that can be configured to downlink subframes in return link is not identical yet.Suppose that deviant is X, the radio frames of DeNB side is m, subframe is numbered n, need the satisfied subframe of condition below to number corresponding subframe and can be configured to downlink subframes in return link, that is to say that base station side all needs to meet condition below for subframe numbering corresponding to all subframes of the descending sub frame set of back haul link downlink transfer:
(10×m+n-Xmod10)mod10∈{1，2，3，6，7，8}。
Mode two, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for negative; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for just.
Take Fig. 7 as example, in identical numbering radio frames, the descending reception of back haul link subframe 0 regularly differs a subframe with the descending subframe 0 regularly that sends of access link, and the descending reception timing of back haul link after the descending transmission fixed response time of access link, so the definite deviant of RN equipment 20 is-1.
Accordingly, base station 10 can be used in RN equipment side each subframe numbering in the subframe set of back haul link downlink transfer subtracts each other with deviant respectively, thereby obtains base station side for the descending sub frame set of back haul link downlink transfer.
Take Fig. 7 as example, the subframe set that RN equipment side can be used in back haul link downlink transfer be 1,2,3,6,7,8}, deviant is-1, base station side is { 2,3,4,7,8,9} for the descending sub frame set of back haul link downlink transfer.
The method that mode two also can adopt similar fashion one to satisfy condition determines that base station side is for the descending sub frame set of back haul link downlink transfer.Positive and negative contrary due to mode one and mode two, so mode two need to meet following condition:
(10×m+n+Xmod10)mod10∈{1，2，3，6，7，8}。
Concrete aforesaid way one or the mode two of adopting can be stipulated in advance in agreement; Or high-rise informing base station 10 and RN equipment 20; Or consulted to determine by base station 10 and RN equipment 20.
The selection here can be configured as required, and such as sending a large amount of data to RN equipment 20, the downlink subframes in return link quantity that can configure is more, otherwise can lack.Certainly, except the data volume consider sending, can also be compound from system, terminal quantity equal angles separately or consider.
Configuration information, after having determined downlink subframes in return link, just need to have been determined in base station 10.The type of configuration information has various ways, enumerates several below:
Mode one, configuration information are bitmap (bit map).
Accordingly, RN equipment 20, according to the numerical value of each bit in bitmap and subframe corresponding to bit, is determined the subframe as downlink subframes in return link.
The bit number of bitmap can equal the quantity of subframe in one or more radio frames.The corresponding subframe of each bit.
The bit number of supposing bitmap is 10,0th, does not configure downlink subframes in return link, the 1st, and configuration downlink subframes in return link.
Take Fig. 7 as example, is regularly reference if the definite bitmap in base station 10 be take DeNB frame, and definite bitmap is 0011100111;
Accordingly, RN equipment 20 receives after bitmap have two kinds of processing modes.
Because the bitmap receiving is that to take DeNB frame be regularly reference, so RN equipment 20 also needs according to deviant, the bitmap receiving is converted to to take the descending transmission of access link be regularly reference.
Take DeNB frame regularly as the bitmap of reference is 0011100111, and deviant is 1 (suppose positive and negative in the manner described above one), so also delay one by 0011100111, obtains 0111001110.
Take Fig. 7 as example, if the definite bitmap in base station 10 is that to take descending send of access link be regularly that the ，Ze base station 10 of reference has two kinds of processing modes equally.
Accordingly, RN equipment 10 can directly be determined the subframe that each bit is corresponding (being above-mentioned RN equipment 20 processing modes 1) according to current time slot relation; Also can, according to the order of a radio frames, according to deviant, determine the subframe that each bit is corresponding (being above-mentioned RN equipment 20 processing modes 2).
Accordingly, RN equipment 20 can be determined subframe corresponding to each bit in bitmap according to the order of a radio frames, i.e. corresponding first bit of subframe 0, and corresponding second bit of subframe 1, the like.And then just can accurately know downlink subframes in return link according to the numerical value of each bit.
It should be noted that, embodiment of the present invention configuration information is that the mode of bitmap is not limited to above-mentioned example, and other can notify the mode to RN equipment 20 to be all suitable for the embodiment of the present invention downlink subframes in return link of configuration by bitmap.
Mode two, configuration information are subframe numberings.
Accordingly, RN equipment 20, according to subframe numbering, is determined the subframe as downlink subframes in return link.
Take Fig. 7 as example, is regularly reference if DeNB frame be take in base station 10, and definite subframe numbering is { 2,3,4,7,8,9};
Accordingly, RN equipment 20 receives after subframe numbering, the subframe numbering of receiving converted to to take descending transmission of access link be regularly the subframe numbering of reference.
Take DeNB frame regularly as reference subframe numbering be that { 2,3,4,7,8,9}, deviant is 1 (suppose positive and negative in the manner described above one), so take descending transmission of access link, is regularly that the subframe numbering of reference is { 1,2,3,6,7,8}.
Take Fig. 7 as example, if access link be take in base station 10, descending transmission is regularly reference, and base station 10 is first definite take DeNB frame regularly as the subframe numbering of reference is { 2,3,4,7,8,9}; And then according to deviant, by take DeNB frame, regularly as the subframe numbering of reference, { 2,3,4,7,8,9} converts that to take descending transmission of access link be regularly that { 1,2,3,6,7,8}, will { 1,2,3,6,7,8} sends to RN equipment 20 for the subframe numbering of reference to;
Accordingly, RN equipment 20 receives after subframe numbering, directly will { subframe corresponding to 1,2,3,6,7,8} is as downlink subframes in return link.
It should be noted that, embodiment of the present invention configuration information develops simultaneously and is confined to the mode of bitmap and subframe numbering, and other can be notified the downlink subframes in return link of configuration can be as the configuration information of the embodiment of the present invention to the information of RN equipment 20.
Wherein, base station 10 can be placed in configuration information in RRC (Radio Resource Control, Radio Resource is controlled) signaling and send to RN equipment 20.Certainly, except RRC signaling method, other can send to configuration information the mode of RN equipment 20 to be all suitable for the embodiment of the present invention, such as broadcast etc.
Based on same inventive concept, a kind of base station, RN equipment, the method for configurating downlink subframe and the method for downlink data receiving are also provided in the embodiment of the present invention, because the principle that these equipment are dealt with problems with method is similar to the system of downlink data receiving, therefore the enforcement of these equipment and method can, referring to the enforcement of system, repeat part and repeat no more.
As shown in Figure 3, the base station of the embodiment of the present invention comprises: determination module 100, configuration module 110 and notification module 120.
Preferably, determination module 100 determines that RN equipment side can be used in the subframe set of back haul link downlink transfer, according to RN equipment side, can be used in subframe numbering and deviant in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
Preferably, notification module 120 arranges the numerical value of downlink subframes in return link corresponding bit in bit map bitmap, and the bitmap after arranging is as configuration information; Or using the subframe numbering of downlink subframes in return link as configuration information.
Preferably, notification module 120 sends the RRC signaling that comprises configuration information to RN equipment.
As shown in Figure 4, the RN equipment of the embodiment of the present invention comprises: reporting module 200 and receiver module 210.
If configuration information is bitmap, receiver module 210, according to the numerical value of each bit in bitmap and subframe corresponding to bit, is determined the subframe as downlink subframes in return link.
If configuration information is subframe numbering, receiver module 210, according to subframe numbering, is determined the subframe as downlink subframes in return link.
As shown in Figure 5, the method for embodiment of the present invention configurating downlink subframe comprises the following steps:
The descending transmission regularly and the descending deviant regularly that receives of back haul link of access link that step 501, base station reports according to RN equipment, determines that base station side can be used in the descending sub frame set of back haul link downlink transfer.
RN equipment is notified by configuration information in step 503, base station.
Wherein, the descending sub frame set that base station side can be used in back haul link downlink transfer refers to base station frame radio frames regularly, such as the DeNB frame timing in Fig. 7～Fig. 9;
Relative, the descending sub frame set that RN equipment side can be used in back haul link downlink transfer refers to the descending radio frames regularly that sends of RN equipment access link, such as the descending transmission timing of the RN equipment access link in Fig. 7～Fig. 9.
The descending reception timing of back haul link and base station frame timing identical (only having propagation delay time) due to RN equipment, and the descending transmission timing of access link and the descending reception of back haul link regularly have skew, so the timing of base station frame and the descending transmission of RN equipment access link also have identical skew surely.
Deviant is known in base station, when configuration downlink subframes in return link, just can avoid the non-MBSFN subframe of RN equipment to be mixed with downlink subframes in return link.
Concrete, in step 501, base station determines that RN equipment side can be used in the subframe set of back haul link downlink transfer, according to RN equipment side, can be used in subframe numbering and deviant in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
Base station can know that RN equipment side can be used in the subframe set of back haul link downlink transfer, take FDD system as example, and the subframe set that RN equipment side can be used in back haul link downlink transfer is that { 1,2,3,6,7,8}, this is pre-configured in base station.
Known that RN equipment side can be used in the subframe set of back haul link downlink transfer, known again deviant, just can determine that base station side is used for the descending sub frame set of back haul link downlink transfer.
In force, due to deviant comprise positive and negative, so need regulation how to be offset into as what skew for negative.Here there are two kinds of modes:
Mode one, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for just; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for negative.
Accordingly, step 501Zhong， base station can be used in RN equipment side each subframe numbering in the subframe set of back haul link downlink transfer and is added with deviant respectively, thereby obtains base station side for the descending sub frame set of back haul link downlink transfer.
Mode one can also adopt the method satisfying condition to determine that base station side is for the descending sub frame set of back haul link downlink transfer, and particular content can, referring to the corresponding contents in Fig. 2, not repeat them here.
Mode two, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for negative; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for just.
Accordingly, step 501Zhong， base station can be used in RN equipment side each subframe numbering in the subframe set of back haul link downlink transfer subtracts each other with deviant respectively, thereby obtains base station side for the descending sub frame set of back haul link downlink transfer.
Mode two can also adopt the method satisfying condition to determine that base station side is for the descending sub frame set of back haul link downlink transfer, and particular content can, referring to the corresponding contents in Fig. 2, not repeat them here.
Concrete aforesaid way one or the mode two of adopting can be stipulated in advance in agreement; Or high-rise informing base station and RN equipment; Or consulted to determine by base station and RN equipment.
Base station is determining that base station side can be used in the descending sub frame set of back haul link downlink transfer, just need to from base station side can be used in the descending sub frame set of back haul link downlink transfer, select part or all of subframe as downlink subframes in return link.
In step 503, can be configured as required, such as sending a large amount of data to RN equipment 20, the downlink subframes in return link quantity that can configure is more, otherwise can lack.Certainly, except the data volume consider sending, can also be compound from system, terminal quantity equal angles separately or consider.
Configuration information, after having determined downlink subframes in return link, just need to have been determined in base station.The type of configuration information has various ways, enumerates several below:
Mode one, configuration information are bitmap.
Base station arranges the numerical value of downlink subframes in return link corresponding bit in bitmap, and the bitmap after arranging is as configuration information.
Here configuration information is that particular content and the configuration information in Fig. 2 of bitmap are that the particular content of bitmap is identical, does not repeat them here.
Mode two, configuration information are subframe numberings.
Base station is using the subframe numbering of downlink subframes in return link as configuration information.
Here configuration information is that particular content and the configuration information in Fig. 2 of subframe numbering are that the subframe particular content of numbering is identical, does not repeat them here.
It should be noted that, embodiment of the present invention configuration information develops simultaneously and is confined to the mode of bitmap and subframe numbering, and other can be notified the downlink subframes in return link of configuration can be as the configuration information of the embodiment of the present invention to the information of RN equipment.
Step 503Zhong， base station can be placed in configuration information RRC signaling and send to RN equipment.Certainly, except RRC signaling method, other can send to configuration information the mode of RN equipment to be all suitable for the embodiment of the present invention, such as broadcast etc.
As shown in Figure 6, the method for embodiment of the present invention downlink data receiving comprises the following steps:
Step 601, RN equipment are determined the descending deviant that sends timing and the descending reception timing of back haul link of access link, and definite deviant is sent to base station.
Step 602, RN equipment, according to the announcement information from base station of receiving, are determined that base station is according to the downlink subframes in return link of deviant configuration, and are received data by downlink subframes in return link.
In force, due to deviant comprise positive and negative, so need regulation how to be offset into as what skew for negative, then, in step 601, RN equipment is determined the symbol that deviant comprises according to the rules.Here there are two kinds of modes:
Mode one, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for just; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for negative.
Take Fig. 7 as example, in identical numbering radio frames, the descending reception of back haul link subframe 0 regularly differs a subframe with the descending subframe 0 regularly that sends of access link, and the descending reception timing of back haul link after the descending transmission fixed response time of access link, so the definite deviant of RN equipment 20 is 1.
Mode two, with identical numbering radio frames, compare, if the descending reception of back haul link regularly after the descending transmission fixed response time of access link, deviant is for negative; If the descending transmission of access link regularly after the descending reception fixed response time of back haul link, deviant is for just.
Take Fig. 7 as example, in identical numbering radio frames, the descending reception of back haul link subframe 0 regularly differs a subframe with the descending subframe 0 regularly that sends of access link, and the descending reception timing of back haul link after the descending transmission fixed response time of access link, so the definite deviant of RN equipment 20 is-1.
Concrete aforesaid way one or the mode two of adopting can be stipulated in advance in agreement; Or high-rise informing base station and RN equipment; Or consulted to determine by base station and RN equipment.
In step 602, the type of the configuration information that RN equipment is received has various ways, enumerates several below:
Mode one, configuration information are bitmap.
In step 602, RN equipment, according to the numerical value of each bit in bitmap and subframe corresponding to bit, is determined the subframe as downlink subframes in return link.
Here configuration information is that particular content and the configuration information in Fig. 2 of bitmap are that the particular content of bitmap is identical, does not repeat them here.
Mode two, configuration information are subframe numberings.
In step 602, RN equipment receives after subframe numbering, the subframe numbering of receiving converted to to take descending reception of back haul link be regularly the subframe numbering of reference.
Here configuration information is that particular content and the configuration information in Fig. 2 of subframe numbering are that the subframe particular content of numbering is identical, does not repeat them here.
It should be noted that, embodiment of the present invention configuration information develops simultaneously and is confined to the mode of bitmap and subframe numbering, and other can be notified the downlink subframes in return link of configuration can be as the configuration information of the embodiment of the present invention to the information of RN equipment.
Wherein, Fig. 5 and Fig. 6 can synthesize a flow process, form the method for a new downlink data receiving, first perform step 601, then perform step 501 and step 502, finally perform step 602.
With FDD system, configuration information is that bitmap is that example describes below.
In a radio frames, the subframe set that RN equipment side can be used in back haul link downlink transfer is always { 1,2,3,6,7,8}, the deviant that DeNB need to report according to RN equipment determines that DeNB side can be used in the subframe set of back haul link downlink transfer, and this set is relevant with deviant, also not identical according to the subframe comprising in the different sets of deviant.
Fig. 7～Fig. 9 provided deviant be 1,3,5 o'clock can the set of gamete frame.As shown in Figure 7: when deviant is 1, { the corresponding subframe set of 1,2,3,6,7,8} is { 2,3 with the set of RN side subframe, 4,7,8,9}, as shown in Figure 8: when deviant is 3, with RN side subframe set { 1,2,3, the corresponding subframe set of 6,7,8} is { 4,5,6,9,0,1}; As shown in Figure 9; When deviant is 5, { the corresponding subframe set of 1,2,3,6,7,8} is { 6,7,8,1,2,3} with the set of RN side subframe.
DeNB is back haul link subframe by the whole sub-frame configuration in subframe set, back haul link subframe position is mapped to bitmap and is included in RRC signaling, or directly subframe index is included in RRC signaling to notice to RN equipment.RN equipment receives after bitmap or subframe index, can be from start (RN equipment side subframe 9 Fig. 7 with the subframe position of DeNB subframe 0 correspondence; RN equipment side subframe 7 in Fig. 8; RN equipment side subframe 5 in Fig. 9), according to bitmap, determine the position of respective backhaul link subframe, or directly according to subframe index, determine the position of respective backhaul link subframe.
Fig. 7～Fig. 9 is to be back haul link subframe by whole sub-frame configuration, part subframe is configured to back haul link subframe and Fig. 7～Fig. 9 similar, do not repeat them here.
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 complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Because embodiment of the present invention base station sends regularly according to RN equipment descending and the descending deviant configuration downlink subframes in return link receiving regularly of RN equipment, thus the situation generation that to have avoided non-MBSFN sub-frame configuration be downlink subframes in return link.
Because RN equipment receives data by base station according to the downlink subframes in return link of deviant configuration, avoiding non-MBSFN sub-frame configuration is downlink subframes in return link, thereby avoids the impact of the transmission performance of DuiRN community; Further improve the reliability of the transmission performance of LiaoRN community.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (15)
1. a method for configurating downlink subframe, is characterized in that, the method comprises:
The descending transmission regularly and the descending deviant regularly that receives of back haul link of access link that base station reports according to relaying RN equipment, determines that base station side can be used in the descending sub frame set of back haul link downlink transfer;
Described base station is downlink subframes in return link by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer;
Described RN equipment is notified by configuration information in described base station;
Wherein, described base station determines that the descending sub frame set that base station side can be used in back haul link downlink transfer comprises:
Described base station determines that RN equipment side can be used in the subframe set of back haul link downlink transfer;
Described base station can be used in subframe numbering and the described deviant in the subframe set of back haul link downlink transfer according to RN equipment side, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
2. the method for claim 1, is characterized in that, described base station is after downlink subframes in return link by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer, before notice configuration information, also comprises:
Described base station arranges the numerical value of downlink subframes in return link corresponding bit in bit map bitmap, and the bitmap after arranging is as configuration information; Or
Described base station is using the subframe numbering of downlink subframes in return link as configuration information.
3. the method as described in as arbitrary in claim 1～2, is characterized in that, described base station notice configuration information comprises:
Described base station sends the radio resource control RRC signaling that comprises configuration information to described RN equipment.
4. a method for downlink data receiving, is characterized in that, the method comprises:
RN equipment is determined descending timing and the descending deviant regularly that receives of back haul link of sending of access link, and definite deviant is sent to base station, make base station according to RN equipment side, can be used in subframe numbering and the described deviant in the subframe set of back haul link downlink transfer, and RN equipment side can be used in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer;
Described RN equipment, according to the announcement information from described base station of receiving, is determined that base station is according to the downlink subframes in return link of described deviant configuration, and is received data by described downlink subframes in return link.
5. method as claimed in claim 4, is characterized in that, configuration information is bitmap;
Described RN equipment determines that downlink subframes in return link comprises:
Described RN equipment, according to the numerical value of each bit in bitmap and subframe corresponding to bit, is determined the subframe as downlink subframes in return link.
6. method as claimed in claim 4, is characterized in that, configuration information is subframe numbering;
Described RN equipment determines that downlink subframes in return link comprises:
Described RN equipment is numbered according to subframe, determines the subframe as downlink subframes in return link.
7. an equipment for configurating downlink subframe, is characterized in that, this equipment comprises:
Determination module, for descending the transmission regularly and the descending deviant regularly that receives of back haul link of access link reporting according to RN equipment, determines that base station side can be used in the descending sub frame set of back haul link downlink transfer;
Configuration module, for being downlink subframes in return link by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer;
Notification module, for notifying configuration information described RN equipment;
Described determination module specifically for: determine that RN equipment side can be used in the subframe set of back haul link downlink transfer, according to RN equipment side, can be used in subframe numbering and described deviant in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
8. equipment as claimed in claim 7, is characterized in that, described notification module also for:
The numerical value that downlink subframes in return link corresponding bit in bit map bitmap is set, the bitmap after arranging is as configuration information; Or
Using the subframe numbering of downlink subframes in return link as configuration information.
9. the equipment as described in as arbitrary in claim 7～8, is characterized in that, described notification module specifically for:
To described RN equipment, send the RRC signaling that comprises configuration information.
10. an equipment for downlink data receiving, is characterized in that, this equipment comprises:
Reporting module, for determining that access link is descending, send regularly and the descending deviant regularly that receives of back haul link, and definite deviant is sent to base station, make base station according to RN equipment side, can be used in subframe numbering and the described deviant in the subframe set of back haul link downlink transfer, and RN equipment side can be used in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer;
Receiver module, for according to the announcement information from described base station of receiving, determines that base station is according to the downlink subframes in return link of described deviant configuration, and receives data by described downlink subframes in return link.
11. equipment as claimed in claim 10, is characterized in that, configuration information is bitmap;
Described receiver module specifically for:
According to the numerical value of each bit in bitmap and subframe corresponding to bit, determine the subframe as downlink subframes in return link.
12. equipment as claimed in claim 10, is characterized in that, configuration information is subframe numbering;
Described receiver module specifically for:
According to subframe numbering, determine the subframe as downlink subframes in return link.
The system of 13. 1 kinds of downlink data receivings, is characterized in that, this system comprises:
Base station, for descending the transmission regularly and the descending deviant regularly that receives of back haul link of access link reporting according to RN equipment, determine that base station side can be used in the descending sub frame set of back haul link downlink transfer, by the part or all of sub-frame configuration of the descending sub frame set for back haul link downlink transfer, be downlink subframes in return link, by configuration information, notify described RN equipment;
RN equipment, for determining that access link is descending, send regularly and the descending deviant regularly that receives of back haul link, and definite deviant is sent to base station, according to the announcement information from described base station of receiving, determine that base station is according to the downlink subframes in return link of described deviant configuration, and receive data by described downlink subframes in return link;
Described base station specifically for: determine that RN equipment side can be used in the subframe set of back haul link downlink transfer, according to RN equipment side, can be used in subframe numbering and described deviant in the subframe set of back haul link downlink transfer, determine that base station side is for the descending sub frame set of back haul link downlink transfer.
14. systems as claimed in claim 13, is characterized in that, described base station also for:
The numerical value that downlink subframes in return link corresponding bit in bit map bitmap is set, the bitmap after arranging is as configuration information;
Described RN equipment also for:
According to the numerical value of each bit in bitmap and subframe corresponding to bit, determine the subframe as downlink subframes in return link.
15. systems as claimed in claim 13, is characterized in that, described base station also for:
Using the subframe numbering of downlink subframes in return link as configuration information;
Described RN equipment also for:
According to subframe numbering, determine the subframe as downlink subframes in return link.
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| CN104254077B (en) * | 2013-06-27 | 2018-01-02 | 华为技术有限公司 | Link deployment method and apparatus |
| CN104918227B (en) * | 2014-03-10 | 2019-02-01 | 华为技术有限公司 | The method that base station returns in communication equipment and long evolving system |
| CN106304352B (en) * | 2015-05-29 | 2019-01-22 | 中兴通讯股份有限公司 | Configuration method, method for transmitting signals and the node of more wireless link sharing resources |
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