CN101790178B - Method for configuring downlink relay sub-frame - Google Patents
Method for configuring downlink relay sub-frame Download PDFInfo
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- CN101790178B CN101790178B CN200910077581.8A CN200910077581A CN101790178B CN 101790178 B CN101790178 B CN 101790178B CN 200910077581 A CN200910077581 A CN 200910077581A CN 101790178 B CN101790178 B CN 101790178B
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Abstract
The invention discloses a method for configuring a downlink relay sub-frame, which comprises the following steps: using a sub-frame with a sub-frame label as a priority to send a paging message as an element of a downlink relay sub-frame candidate set; and selecting one or more sub-frame(s) which is/are not configured as a paging sub-frame from the downlink relay sub-frame candidate set, and configuring the selected sub-frame(s) as a downlink relay sub-frame. The method of the invention can increase the flexibility of the downlink relay sub-frame configuration.
Description
Technical field
The present invention relates to Long Term Evolution (LTE, Long Term Evolution) technology, relate in particular to a kind of collocation method of downlink relay sub-frame.
Background technology
At present, in order to improve the covering gain of cell boarder, realize and mend blind effect, in long-term evolution strengthening technology (LTE-Advanced), introduce relaying (Relay), in work, Relay both with control the net element communication of this Relay self, again for the user terminal (UE) under this Relay self provides service; The network element of described control Relay comprises improved Node B (eNB, evolved Node B), general packet radio service gateway supports node (GGSN, Gateway GPRS Support Node), radio network controller (RNC, Radio Network Controller).
Below taking eNB as example, illustrate the communicating by letter of descending access link (access link) of the network element of controlling Relay and this Relay and this Relay and its time UE.As shown in Figure 1, Relay both communicated by letter with eNB, again for the UE under Relay provides service, and in order efficiently to utilize frequency spectrum resource, eNB uses same frequency to carry out transfer of data to link and this Relay of Relay to the link of UE, like this, on a descending access link, if eNB sends data to Relay in certain or some subframes, this Relay also in this subframe to its lower UE transmission data, will produce stronger interference.Thereby for fear of interference, on a descending access link, if eNB sends data to Relay in certain or some subframes, Relay does not send data to the UE under this Relay in these subframes.Wherein, be called downlink relay sub-frame for eNB and other network element of controlling Relay to the subframe of Relay transmission data, Relay does not send data to UE in downlink relay sub-frame.
Introduce after Relay, the configuration of the subframe of many cell multimedia broadcasts of LTE system requirements multicast (MBMS) business need be followed following provisions: adopt LTE Frequency Division Duplexing (FDD), subframe label is that the subframe of #0 and #5 is for transmitting system broadcast and synchronizing signal, subframe label is that the subframe of #4, #9 is preferentially for sending beep-page message, only having subframe label is that six subframes of #1, #2, #3, #6, #7, #8 can be configured to downlink relay sub-frame, claim the set { #1 being formed by these six subframes, #2, #3, #6, #7, #8} is downlink relay sub-frame Candidate Set; Adopt LTE time division duplex, subframe label is that the subframe of #0, #5 is for transmitting system broadcast, subframe label is that the subframe of #2 is sub-frame of uplink, subframe label be the subframe of #1, #6 preferentially for sending beep-page message, only having subframe label is that five subframes of #3, #4, #7, #8, #9 can be configured to downlink relay sub-frame, claims the set { #3 being made up of these five subframes, #4, #7, #8, #9} is downlink relay sub-frame Candidate Set.
And when actual disposition paging subframe, adopt LTE Frequency Division Duplexing (FDD), in the time configuring a paging subframe in community, the sub-frame configuration that is only #9 by subframe label is paging subframe, that is, the subframe that subframe label is #4 is not used in transmission beep-page message, but according to the configuration regulation of above-mentioned subframe, subframe label is that the subframe of #4 can not be used as downlink relay sub-frame, is called paging subframe for the subframe that sends beep-page message, equally, adopt LTE time division duplex, in the time configuring a paging subframe in community, the sub-frame configuration that is #0 by subframe label is paging subframe, in the time configuring two paging subframes in community, be #0 by subframe label, the sub-frame configuration of #5 is paging subframe, like this, subframe label is #1, the subframe of #6 is all not used in transmission beep-page message, but also all can not be used as downlink relay sub-frame, visible, the above-mentioned regulation of the configuration about subframe, make can selecteed number of subframes fewer in downlink relay sub-frame Candidate Set, and then make the flexibility ratio of downlink relay sub-frame configuration lower.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of collocation method of downlink relay sub-frame, can increase the flexibility ratio of downlink relay sub-frame configuration.
For achieving the above object, technical scheme of the present invention is achieved in that
A collocation method for downlink relay sub-frame, while adopting Long Term Evolution LTE Frequency Division Duplexing (FDD), the method comprises:
Be that the subframe of #4, #9 is all as the element of downlink relay sub-frame Candidate Set using subframe label; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #4 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration.
Further, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the user terminal UE of community under relaying Relay and Relay.
Further, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the UE of community under eNB and Relay.
Further, the one or more subframes that are not configured to paging subframe in the described downlink relay sub-frame Candidate Set of described selection comprise:
Determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay;
Determined subframe in mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Select the determined one or more subframes that are not configured in paging subframe.
Further, in the described downlink relay sub-frame Candidate Set of described selection, be not configured to before one or more subframes of paging subframe, the method further comprises:
For the each subframe in downlink relay sub-frame Candidate Set arranges pointer; In advance by the each subframe in downlink relay sub-frame Candidate Set be arranged in eNB, Relay and UE for its set pointer correspondence, and arrange downlink relay sub-frame the value of corresponding pointer;
Accordingly, in described mark downlink relay sub-frame Candidate Set, determined subframe is specially: by set paging subframe the value of corresponding pointer, assignment is given the corresponding pointer of determined subframe;
Described selected sub-frame configuration is specially by downlink relay sub-frame: by the value of the corresponding pointer of set downlink relay sub-frame, assignment is given pointer corresponding to selected subframe.
The present invention also provides a kind of collocation method of downlink relay sub-frame, and while adopting LTE time division duplex, the method comprises:
Be that the subframe of #1, #6 is all as the element of downlink relay sub-frame Candidate Set using subframe label; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #1 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #6 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration.
Further, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the user terminal UE of community under relaying Relay and Relay.
Further, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the UE of community under eNB and Relay.
Further, the one or more subframes that are not configured to paging subframe in the described downlink relay sub-frame Candidate Set of described selection comprise:
Determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay;
Determined subframe in mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Select the determined one or more subframes that are not configured in paging subframe.
Further, in the described downlink relay sub-frame Candidate Set of described selection, be not configured to before one or more subframes of paging subframe, the method further comprises:
For the each subframe in downlink relay sub-frame Candidate Set arranges pointer; In advance by the each subframe in downlink relay sub-frame Candidate Set be arranged in eNB, Relay and UE for its set pointer correspondence, and arrange downlink relay sub-frame the value of corresponding pointer;
Accordingly, in described mark downlink relay sub-frame Candidate Set, determined subframe is specially: by set paging subframe the value of corresponding pointer, assignment is given the corresponding pointer of determined subframe;
Described selected sub-frame configuration is specially by downlink relay sub-frame: by the value of the corresponding pointer of set downlink relay sub-frame, assignment is given pointer corresponding to selected subframe.
The present invention by using preferential for sending the subframe of beep-page message as the element of downlink relay sub-frame Candidate Set, the quantity of selectable subframe while increasing configurating downlink relay sub-frame, and then increase the flexibility ratio of downlink relay sub-frame configuration.The collocation method of downlink relay sub-frame provided by the present invention, also has following advantage and disadvantage:
Many cell MBMSs heavy traffic, when transfer resource is nervous, to be preferentially downlink relay sub-frame for sending the sub-frame configuration of beep-page message, and then can be by subframe label #1, #2, #3, #6, #7, #8 six or subframe label be five subframes of #3, #4, #7, #8, #9 all for service data transmission, the pressure of relieve transmission resource.
Brief description of the drawings
Fig. 1 is the network architecture schematic diagram between eNB and its Relay controlling;
The realization flow figure of the collocation method of downlink relay sub-frame when Fig. 2 is embodiment of the present invention employing LTE Frequency Division Duplexing (FDD);
The realization flow figure of the collocation method of downlink relay sub-frame when Fig. 3 is embodiment of the present invention employing LTE time division duplex.
Embodiment
Basic thought of the present invention is: while adopting LTE Frequency Division Duplexing (FDD), be that the subframe of #4 and/or #9 is as the element of downlink relay sub-frame Candidate Set using subframe label; While adopting LTE time division duplex, be that the subframe of #1 and/or #6 is as the element of downlink relay sub-frame Candidate Set using subframe label, increase the quantity that can be used as the subframe of downlink relay sub-frame in every frame radio frames, the quantity of selectable subframe while having increased configurating downlink relay sub-frame, and then increased the flexibility ratio of downlink relay sub-frame configuration, while making configurating downlink relay sub-frame, can select to be more flexibly conducive to subframe that many cell MBMSs business carries out as downlink relay sub-frame.
When the embodiment of the present invention adopts LTE Frequency Division Duplexing (FDD), the realization flow of the collocation method of downlink relay sub-frame as shown in Figure 2, comprises the following steps:
Step 201: be that the subframe of #4 and #9 or #4 is as the element of downlink relay sub-frame Candidate Set using subframe label;
By this step, downlink relay sub-frame Candidate Set can be: comprise that subframe label is the set of seven subframes of #1, #2, #3, #6, #7, #8, #4, or comprise that subframe label is the set of eight subframes of #1, #2, #3, #6, #7, #8, #4, #9, can be as required, any in above-mentioned two set gathered as downlink relay sub-frame Candidate Set.
Here, step 201 can also comprise:
Steps A 1, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer, to indicate each subframe; Described pointer is corresponding one by one with the subframe in downlink relay sub-frame Candidate Set, by compose different values for pointer, distinguishes the subframe that pointer is corresponding and whether has been configured to downlink relay sub-frame;
Wherein, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer, can be taking a frame radio frames for example, as unit setting:
Downlink relay sub-frame Candidate Set comprises that subframe label is seven subframes of #1, #2, #3, #6, #7, #8, #4, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 1 or table 2:
| Subframe numbers | #1 | #2 | #3 | #4 | #6 | #7 | #8 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
Table 1
| Subframe numbers | #1 | #2 | #3 | #6 | #7 | #8 | #4 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
Table 2
Wherein, table 1 obtains for the subframe that is #4 using subframe label after the element of downlink relay sub-frame Candidate Set, and the subframe in downlink relay sub-frame Candidate Set is by its subframe label sequence, and order configures pointer for it; And table 2 is compared with prior art, the corresponding pointer Bit 6 of subframe that the element subframe label that the present invention is increased in downlink relay sub-frame Candidate Set is #4, the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant;
Downlink relay sub-frame Candidate Set comprises that subframe label is eight subframes of #1, #2, #3, #4, #6, #7, #8, #9, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 3 or table 4:
| Subframe numbers | #1 | #2 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 | Bit 7 |
Table 3
| Subframe numbers | #1 | #2 | #3 | #6 | #7 | #8 | #4 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 | Bit 7 |
Table 4
Wherein, table 3 obtains for the subframe that is #4 and #9 using subframe label after the element of downlink relay sub-frame Candidate Set, and the subframe in downlink relay sub-frame Candidate Set is by its subframe label sequence, and order configures pointer for it; And table 4 compared with prior art, the element subframe label that the present invention is increased in downlink relay sub-frame Candidate Set is subframe corresponding pointer Bit 6, the Bit 7 respectively of #4, #9, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant.
A radio frames group that can also form taking four continuous radio frames is as unit, for example, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer:
Downlink relay sub-frame Candidate Set comprises that subframe label is seven subframes of #1, #2, #3, #6, #7, #8, #4, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 5 or table 6:
| The 1st frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
| The 2nd frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 |
| Pointer | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 | Bit 12 | Bit 13 |
| The 3rd frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 |
| Pointer | Bit 14 | Bit 15 | Bit 16 | Bit 17 | Bit 18 | Bit 19 | Bit 20 |
| The 4th frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 |
| Pointer | Bit 21 | Bit 22 | Bit 23 | Bit 24 | Bit 25 | Bit 26 | Bit 27 |
Table 5
| The 1st frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
| The 2nd frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 6 | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 |
| The 3rd frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 12 | Bit 13 | Bit 14 | Bit15 | Bit 16 | Bit 17 |
| The 4th frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 18 | Bit 19 | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
| The 1st frame radio frames subframe label #4 | The 2nd frame radio frames subframe label #4 | The 3rd frame radio frames subframe label #4 | The 4th frame radio frames subframe label #4 | |||
| Pointer | Bit 24 | Bit 25 | Bit 26 | Bit 27 |
Table 6
Wherein, table 6 compared with prior art, the subframe that the element subframe label that the present invention in four frame radio frames is increased in downlink relay sub-frame Candidate Set is #4 is corresponding pointer Bit 24, Bit 25, Bit 26, Bit 27 respectively, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant;
Downlink relay sub-frame Candidate Set comprises that subframe label is eight subframes of #1, #2, #3, #4, #6, #7, #8, #9, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 7 or table 8:
| The 1st frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 | Bit 7 |
| The 2nd frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 8 | Bit 9 | Bit 10 | Bit 11 | Bit 12 | Bit 13 | Bit 14 | Bit 15 |
| The 3rd frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 16 | Bit 17 | Bit 18 | Bit 19 | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
| The 4th frame radio frames subframe label | #1 | #2 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 24 | Bit 25 | Bit 26 | Bit 27 | Bit 28 | Bit 29 | Bit 30 | Bit 31 |
Table 7
| The 1st frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
| The 2nd frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 6 | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 |
| The 3rd frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 12 | Bit 13 | Bit 14 | Bit 15 | Bit 16 | Bit17 |
| The 4th frame radio frames subframe label | #1 | #2 | #3 | #6 | #7 | #8 |
| Pointer | Bit 18 | Bit 19 | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
| The 1st frame radio frames subframe label #4 | The 1st frame radio frames subframe label #9 | The 2nd frame radio frames subframe label #4 | The 2nd frame radio frames subframe label #9 | |||
| Pointer | Bit 24 | Bit 25 | Bit 26 | Bit 27 | ||
| The 3rd frame radio frames subframe label #4 | The 3rd frame radio frames subframe label #9 | The 4th frame radio frames subframe label #4 | The 4th frame radio frames subframe label #9 | |||
| Pointer | Bit 28 | Bit 29 | Bit30 | Bit31 |
Table 8
Wherein, table 8 compared with prior art, the element subframe label that the present invention in four frame radio frames is increased in downlink relay sub-frame Candidate Set is subframe corresponding pointer Bit 24～Bit 31 respectively of #4, #9, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant.
Step B1, by the each subframe in downlink relay sub-frame Candidate Set with for the corresponding relation of its set pointer sets in advance in eNB, Relay and UE, and arrange downlink relay sub-frame the value of corresponding pointer; Usually, 1 value by the corresponding pointer of downlink relay sub-frame is set.
Step 202:eNB selects not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and is downlink relay sub-frame by selected sub-frame configuration.
Wherein, select and be that downlink relay sub-frame specifically comprises by selected sub-frame configuration:
Steps A 2, eNB determine the subframe that is not configured to paging subframe in downlink relay sub-frame Candidate Set;
Concrete definite method is:
Step a1, eNB determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay, and determined subframe is the subframe that is configured to paging subframe;
Here, under Relay, the paging subframe of community is configured by eNB, and therefore eNB knows the paging subframe of this community and the allocation model of downlink relay sub-frame, can coordinate the configuration of the two;
The configuration cycle of paging subframe is not less than 1 minute, and the configuration cycle of downlink relay sub-frame is 320ms, can think that the current paging subframe of community remains unchanged within the configuration cycle of current downlink relay sub-frame under Relay, be that the current subframe label that is not used as paging subframe is the subframe of #4 or #9, in the configuration cycle of a downlink relay sub-frame after the configuration of current downlink relay sub-frame completes, all can not be used as paging subframe, the subframe that can be #4 or #9 by this subframe label within the configuration cycle of this downlink relay sub-frame is as downlink relay sub-frame, therefore, in the embodiment of the present invention, when subframe #4 or subframe #9 be not during for paging, eNB can be configured to downlink relay sub-frame by the #4 in downlink relay sub-frame Candidate Set or #9, on the contrary, but subframe #4 and subframe #9 are used to paging service, that is: subframe #4 and #9 are configured to paging subframe, and, eNB does not allow the #4 in downlink relay sub-frame Candidate Set or #9 to be configured to downlink relay sub-frame.
Determined subframe in step a2, eNB mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Step B2, eNB select the determined one or more subframes that are not configured in paging subframe;
Here, eNB selects not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, need to consider transfer resource service condition, if many cell MBMSs heavy traffic, when transfer resource is nervous, selection subframe label is that the sub-frame configuration of #4 or #9 is downlink relay sub-frame, like this, can be that six subframes of #1, #2, #3, #6, #7, #8 are all for service data transmission, with the pressure of relieve transmission resource by subframe label.
Step C2, be downlink relay sub-frame by selected sub-frame configuration;
Here, the method for described configurating downlink relay sub-frame specifically comprises:
By set downlink relay sub-frame the value of corresponding pointer, assignment is given pointer corresponding to selected subframe.
Step 203:eNB issues downlink relay sub-frame configuration information to Relay, Relay is handed down to this downlink relay sub-frame configuration information the UE of community under this Relay again, to inform that Relay and UE are configured to the subframe of downlink relay sub-frame, so that Relay does not send data in this or these subframe, and UE does not receive data in this or these subframe;
Wherein, Relay issues described downlink relay sub-frame configuration information by system broadcast message, concrete, downlink relay sub-frame configuration information can by the following message piece of system broadcast message any one or several in carry: host system message block (MIB, Master Information Block), System information block 1 (SIB1, System Information Block Type1), System information block 2 (SIB2, System Information BlockType 2), .... System information block 11 (SIB11, System Information Block 11) etc.
Here, downlink relay sub-frame configuration information comprises the pointer that downlink relay sub-frame is corresponding, and the assignment of this pointer, for example, and Bit 3=1; Relay or UE receive after downlink relay sub-frame configuration information, and the pointer being carried and each subframe in the downlink relay sub-frame Candidate Set setting in advance and the corresponding pointer contrast with it, can determine the subframe that is configured to downlink relay sub-frame.
In the embodiment of the present invention, step 202,203 also can be completed by Relay, and now, under Relay, the paging subframe of community is also configured by Relay, and downlink relay sub-frame configuration information is uploaded to eNB by Relay, and is handed down to the UE of community under this Relay by Relay.
When the embodiment of the present invention adopts LTE time division duplex, the realization flow of the collocation method of downlink relay sub-frame as shown in Figure 3, comprises the following steps:
Step 301: be that the subframe of #1 and/or #6 is as the element of downlink relay sub-frame Candidate Set using subframe label;
By this step, downlink relay sub-frame Candidate Set can be: comprise that subframe label is the set of six subframes of #3, #4, #7, #8, #9, #1, or comprise that subframe label is the set of six subframes of #3, #4, #7, #8, #9, #6, or comprise that subframe label is the set of seven subframes of #3, #4, #7, #8, #9, #1, #6, can be as required, using any in above-mentioned two set as downlink relay sub-frame Candidate Set.
Here, step 301 can also comprise:
Steps A 1, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer, to indicate each subframe; Described pointer is corresponding one by one with the subframe in downlink relay sub-frame Candidate Set, by compose different values for pointer, distinguishes the subframe that pointer is corresponding and whether has been configured to downlink relay sub-frame;
Wherein, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer, can be taking a frame radio frames for example, as unit setting:
Downlink relay sub-frame Candidate Set comprises that subframe label is six subframes of #3, #4, #7, #8, #9, #1, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 9 or table 10:
| Subframe numbers | #1 | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
Table 9
| Subframe numbers | #3 | #4 | #7 | #8 | #9 | #1 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
Table 10
Wherein, the subframe in the downlink relay sub-frame Candidate Set that table 9 obtains for the subframe that is #1 using subframe label after the element of downlink relay sub-frame Candidate Set is by its subframe label sequence, and order configures pointer for it; And table 10 is compared with prior art, the corresponding pointer Bit 5 of subframe that the element subframe label that the present invention is increased in downlink relay sub-frame Candidate Set is #1, the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant;
Downlink relay sub-frame Candidate Set comprises that subframe label is six subframes of #3, #4, #7, #8, #9, #6, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 11 or table 12:
| Subframe numbers | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
Table 11
| Subframe numbers | #3 | #4 | #7 | #8 | #9 | #6 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
Table 12
Wherein, the subframe in the downlink relay sub-frame Candidate Set that table 11 obtains for the subframe that is #6 using subframe label after the element of downlink relay sub-frame Candidate Set is by its subframe label sequence, and order configures pointer for it; And table 12 compared with prior art, the subframe that the element subframe label that the present invention is increased in downlink relay sub-frame Candidate Set is #6 is corresponding pointer Bit5 respectively, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant;
Downlink relay sub-frame Candidate Set comprises that subframe label is seven subframes of #3, #4, #7, #8, #9, #1, #6, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 13 or table 14:
| Subframe numbers | #1 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
Table 13
| Subframe numbers | #3 | #4 | #7 | #8 | #9 | #1 | #6 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
Table 14
Wherein, the subframe in the downlink relay sub-frame Candidate Set that table 13 obtains for the subframe that is #1 and #6 using subframe label after the element of downlink relay sub-frame Candidate Set is by its subframe label sequence, and order configures pointer for it; And table 14 compared with prior art, the element subframe label that the present invention is increased in downlink relay sub-frame Candidate Set is subframe corresponding pointer Bit 5, the Bit6 respectively of #1, #6, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant.
A radio frames group that can also form taking four continuous radio frames is as unit, for example, for the each subframe in downlink relay sub-frame Candidate Set arranges pointer:
Downlink relay sub-frame Candidate Set comprises that subframe label is six subframes of #3, #4, #7, #8, #9, #1, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 15 or table 16:
| The 1st frame radio frames subframe label | #1 | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
| The 2nd frame radio frames subframe label | #1 | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 6 | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 |
| The 3rd frame radio frames subframe label | #1 | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 12 | Bit 13 | Bit 14 | Bit 15 | Bit 16 | Bit 17 |
| The 4th frame radio frames subframe label | #1 | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 18 | Bit 19 | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
Table 15
| The 1st frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 |
| The 2nd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 5 | Bit 6 | Bit 7 | Bit 8 | Bit 9 |
| The 3rd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 10 | Bit 11 | Bit 12 | Bit13 | Bit 14 |
| The 4th frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 15 | Bit 16 | Bit 17 | Bit 18 | Bit 19 |
| The 1st frame radio frames subframe label #1 | The 2nd frame radio frames subframe label #1 | The 3rd frame radio frames subframe label #1 | The 4th frame radio frames subframe label #1 | ||
| Pointer | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
Table 16
Wherein, table 16 compared with prior art, the subframe that the element subframe label that the present invention in four frame radio frames is increased in downlink relay sub-frame Candidate Set is #1 is corresponding pointer Bit 20, Bit 21, Bit 22, Bit23 respectively, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant;
Downlink relay sub-frame Candidate Set comprises that subframe label is six subframes of #3, #4, #7, #8, #9, #6, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 7 or table 8:
| The 1st frame radio frames subframe label | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 |
| The 2nd frame radio frames subframe label | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 6 | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 |
| The 3rd frame radio frames subframe label | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 12 | Bit 13 | Bit 14 | Bit 15 | Bit 16 | Bit 17 |
| The 4th frame radio frames subframe label | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 18 | Bit 19 | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
Table 17
| The 1st frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit1 | Bit 2 | Bit 3 | Bit 4 |
| The 2nd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 5 | Bit 6 | Bit 7 | Bit 8 | Bit 9 |
| The 3rd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 10 | Bit 11 | Bit 12 | Bit 13 | Bit 14 |
| The 4th frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 15 | Bit 16 | Bit 17 | Bit 18 | Bit 19 |
| The 1st frame radio frames subframe label #6 | The 2nd frame radio frames subframe label #6 | The 3rd frame radio frames subframe label #6 | The 4th frame radio frames subframe label #6 | ||
| Pointer | Bit 20 | Bit 21 | Bit 22 | Bit 23 |
Table 18
Downlink relay sub-frame Candidate Set comprises that subframe label is seven subframes of #3, #4, #7, #8, #9, #1, #6, in downlink relay sub-frame Candidate Set each subframe and be the corresponding relation of the pointer that arranges of each subframe as shown in table 19 or table 20:
| The 1st frame radio frames subframe label | #1 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 |
| The 2nd frame radio frames subframe label | #1 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 7 | Bit 8 | Bit 9 | Bit 10 | Bit 11 | Bit 12 | Bit 13 |
| The 3rd frame radio frames subframe label | #1 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 14 | Bit 15 | Bit 16 | Bit 17 | Bit 18 | Bit 19 | Bit 20 |
| The 4th frame radio frames subframe label | #1 | #3 | #4 | #6 | #7 | #8 | #9 |
| Pointer | Bit 21 | Bit 22 | Bit 23 | Bit 24 | Bit 25 | Bit 26 | Bit 7 |
Table 19
| The 1st frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 0 | Bit 1 | Bit 2 | Bit 3 | Bit 4 |
| The 2nd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 5 | Bit 6 | Bit 7 | Bit 8 | Bit 9 |
| The 3rd frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 10 | Bit 11 | Bit 12 | Bit 13 | Bit 14 |
| The 4th frame radio frames subframe label | #3 | #4 | #7 | #8 | #9 |
| Pointer | Bit 15 | Bit 16 | Bit 17 | Bit 18 | Bit 19 |
| The 1st frame radio frames subframe label #1 | The 1st frame radio frames subframe label #6 | The 2nd frame radio frames subframe label #1 | The 2nd frame radio frames subframe label #6 | ||
| Pointer | Bit 20 | Bit 21 | Bit 22 | Bit 23 | |
| The 3rd frame radio frames subframe label #1 | The 3rd frame radio frames subframe label #6 | The 4th frame radio frames subframe label #1 | The 4th frame radio frames subframe label #6 | ||
| Pointer | Bit 24 | Bit 25 | Bit 26 | Bit 27 |
Table 20
Wherein, table 19 compared with prior art, the element subframe label that the present invention in four frame radio frames is increased in downlink relay sub-frame Candidate Set is subframe corresponding pointer Bit 20～Bit 27 respectively of #1, #6, and the pointer that in downlink relay sub-frame Candidate Set, original element is corresponding is constant.
Step B1, by the each subframe in downlink relay sub-frame Candidate Set with for the corresponding relation of its set pointer sets in advance in eNB, Relay and UE, and arrange downlink relay sub-frame the value of corresponding pointer; Usually, 1 value by the corresponding pointer of downlink relay sub-frame is set.
Step 302:eNB selects not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and is downlink relay sub-frame by selected sub-frame configuration.
Wherein, select and be that downlink relay sub-frame specifically comprises by selected sub-frame configuration:
Steps A 2, eNB determine the subframe that is not configured to paging subframe in downlink relay sub-frame Candidate Set;
Concrete definite method is:
Step a1, eNB determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay, and determined subframe is the subframe that is configured to paging subframe;
Here, under Relay, the paging subframe of community is configured by eNB, and therefore eNB knows the paging subframe of this community and the allocation model of downlink relay sub-frame, can coordinate the configuration of the two;
The configuration cycle of paging subframe is not less than 1 minute, and the configuration cycle of downlink relay sub-frame is 320ms, can think that the current paging subframe of community remains unchanged within the configuration cycle of current downlink relay sub-frame under Relay, be that the current subframe label that is not used as paging subframe is the subframe of #1 or #6, in the configuration cycle of a downlink relay sub-frame after the configuration of current downlink relay sub-frame completes, all can not be used as paging subframe, the subframe that can be #1 or #6 by this subframe label within the configuration cycle of this downlink relay sub-frame is as downlink relay sub-frame, therefore, in the embodiment of the present invention, when subframe #1 or subframe #6 be not during for paging, eNB can be configured to downlink relay sub-frame by the #1 in downlink relay sub-frame Candidate Set or #6, on the contrary, but subframe #1 and subframe #6 are used to paging service, that is: subframe #1 and #6 are configured to paging subframe, and, eNB does not allow the #1 in downlink relay sub-frame Candidate Set or #6 to be configured to downlink relay sub-frame.
Determined subframe in step a2, eNB mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Step B2, eNB select the determined one or more subframes that are not configured in paging subframe;
Here, eNB selects not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, need to consider transfer resource service condition, if many cell MBMSs heavy traffic, when transfer resource is nervous, selection subframe label is that the sub-frame configuration of #1 or #6 is downlink relay sub-frame, like this, can be that five subframes of #3, #4, #7, #8, #9 are all for service data transmission, with the pressure of relieve transmission resource by subframe label.
Step C2, be downlink relay sub-frame by selected sub-frame configuration;
Here, the method for described configurating downlink relay sub-frame specifically comprises:
By set downlink relay sub-frame the value of corresponding pointer, assignment is given pointer corresponding to selected subframe.
Step 303:eNB issues downlink relay sub-frame configuration information to Relay, Relay is handed down to this downlink relay sub-frame configuration information the UE of community under this Relay again, to inform that Relay and UE are configured to the subframe of downlink relay sub-frame, so that Relay does not send data in this subframe, and UE does not receive data in this subframe;
Wherein, downlink relay sub-frame configuration information described in Relay employing sending system broadcast, concrete, downlink relay sub-frame configuration information can by the following message piece of system broadcast message any one or several in carry: MIB, SIB1, SIB2 ... .SIB11 etc.
Here, downlink relay sub-frame configuration information comprises the pointer that downlink relay sub-frame is corresponding, and the assignment of this pointer, for example, and Bit 3=1; Relay or UE receive after downlink relay sub-frame configuration information, and the pointer being carried and each subframe in the downlink relay sub-frame Candidate Set setting in advance and the corresponding pointer contrast with it, can determine the subframe that is configured to downlink relay sub-frame.
In the embodiment of the present invention, step 302,303 also can be completed by Relay, and now, under Relay, the paging subframe of community is also configured by Relay, and downlink relay sub-frame configuration information is uploaded to eNB by Relay, and is handed down to the UE of community under this Relay by Relay.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
1. a collocation method for downlink relay sub-frame, while adopting Long Term Evolution LTE Frequency Division Duplexing (FDD), is characterized in that, the method comprises:
Be that the subframe of #4, #9 is all as the element of downlink relay sub-frame Candidate Set using subframe label; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #4 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration;
The one or more subframes that are not configured to paging subframe in the described downlink relay sub-frame Candidate Set of described selection comprise:
Determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay;
Determined subframe in mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Select the determined one or more subframes that are not configured in paging subframe.
2. the collocation method of downlink relay sub-frame according to claim 1, is characterized in that, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the user terminal UE of community under relaying Relay and Relay.
3. the collocation method of downlink relay sub-frame according to claim 1, is characterized in that, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the UE of community under eNB and Relay.
4. the collocation method of downlink relay sub-frame according to claim 1, is characterized in that, in the described downlink relay sub-frame Candidate Set of described selection, be not configured to before one or more subframes of paging subframe, the method further comprises:
For the each subframe in downlink relay sub-frame Candidate Set arranges pointer; In advance by the each subframe in downlink relay sub-frame Candidate Set be arranged in eNB, Relay and UE for its set pointer correspondence, and arrange downlink relay sub-frame the value of corresponding pointer;
Accordingly, in described mark downlink relay sub-frame Candidate Set, determined subframe is specially: by set paging subframe the value of corresponding pointer, assignment is given the corresponding pointer of determined subframe;
Described selected sub-frame configuration is specially by downlink relay sub-frame: by the value of the corresponding pointer of set downlink relay sub-frame, assignment is given pointer corresponding to selected subframe.
5. a collocation method for downlink relay sub-frame, while adopting LTE time division duplex, is characterized in that, the method comprises:
Be that the subframe of #1, #6 is all as the element of downlink relay sub-frame Candidate Set using subframe label; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #1 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration; Or,
The subframe that is #6 using subframe label is as the element of downlink relay sub-frame Candidate Set; Select not to be configured in described downlink relay sub-frame Candidate Set one or more subframes of paging subframe, and be downlink relay sub-frame by selected sub-frame configuration;
The one or more subframes that are not configured to paging subframe in the described downlink relay sub-frame Candidate Set of described selection comprise:
Determine in downlink relay sub-frame Candidate Set the subframe identical with the subframe label of the current paging subframe of community under Relay;
Determined subframe in mark downlink relay sub-frame Candidate Set, in downlink relay sub-frame Candidate Set, unlabelled subframe is the subframe that is not configured to paging subframe;
Select the determined one or more subframes that are not configured in paging subframe.
6. the collocation method of downlink relay sub-frame according to claim 5, is characterized in that, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the user terminal UE of community under relaying Relay and Relay.
7. the collocation method of downlink relay sub-frame according to claim 6, is characterized in that, described selected sub-frame configuration is downlink relay sub-frame after, the method further comprises:
The subframe that is configured to downlink relay sub-frame is informed to the UE of community under eNB and Relay.
8. the collocation method of downlink relay sub-frame according to claim 5, is characterized in that, in the described downlink relay sub-frame Candidate Set of described selection, be not configured to before one or more subframes of paging subframe, the method further comprises:
For the each subframe in downlink relay sub-frame Candidate Set arranges pointer; In advance by the each subframe in downlink relay sub-frame Candidate Set be arranged in eNB, Relay and UE for its set pointer correspondence, and arrange downlink relay sub-frame the value of corresponding pointer;
Accordingly, in described mark downlink relay sub-frame Candidate Set, determined subframe is specially: by set paging subframe the value of corresponding pointer, assignment is given the corresponding pointer of determined subframe;
Described selected sub-frame configuration is specially by downlink relay sub-frame: by the value of the corresponding pointer of set downlink relay sub-frame, assignment is given pointer corresponding to selected subframe.
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| CN101282155A (en) * | 2007-04-05 | 2008-10-08 | 中兴通讯股份有限公司 | Transmission method for sharing relay by main and secondary base station |
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| CN101282155A (en) * | 2007-04-05 | 2008-10-08 | 中兴通讯股份有限公司 | Transmission method for sharing relay by main and secondary base station |
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