CN102571189A - Data processing method and device of backhaul link sub-frame configuration switching - Google Patents

Data processing method and device of backhaul link sub-frame configuration switching Download PDF

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CN102571189A
CN102571189A CN2010105769784A CN201010576978A CN102571189A CN 102571189 A CN102571189 A CN 102571189A CN 2010105769784 A CN2010105769784 A CN 2010105769784A CN 201010576978 A CN201010576978 A CN 201010576978A CN 102571189 A CN102571189 A CN 102571189A
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haul link
back haul
uncompleted
frame configuration
subframe
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CN102571189B (en
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杨瑾
毕峰
梁枫
吴栓栓
袁明
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes

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Abstract

The invention discloses a data processing method of backhaul link sub-frame configuration switching, which comprises the following steps: a network side and/or a relay node (RN) transmits an uncompleted Hybrid Automatic Repeat Request (HARQ) process of the backhaul link before switching and the corresponding feedback information under the target backhaul link sub-frame configuration after switching according to the backhaul link switching information. The invention also discloses a data processing method of backhaul link sub-frame configuration switching, and a device corresponding to the two methods. The scheme of the invention has the advantages of not only guaranteeing the backward compatibility, but also solving the processing problems of corresponding HARQ process transmission after the backhaul link sub-frame configuration switching and feedback information without bringing in signaling overhead.

Description

Data processing method and device that the back haul link sub-frame configuration is switched
Technical field
The present invention relates to the medium-term and long-term evolution (LTE of third generation partner program (3GPP); Long TermEvolution), senior Long Term Evolution (LTE-A; Long Term Evolution Advanced) time division duplex (TDD; Time Division Duplexing) the sub-frame configuration handoff technique of back haul link in the system relates in particular to data processing method and device that a kind of back haul link sub-frame configuration is switched.
Background technology
In the network of introducing relay station (RN, Relay Node), as shown in Figure 1; Evolved base station in the network (eNB) and macrocell user (M-UE; Macro User Equipment) link between is called the link that direct transfers (Direct Link), and the link between eNB and RN is called back haul link, is also referred to as the Un interface; Link between RN and relay domain user (R-UE, Relay User Equipment) is called access link (AccessLink).
In adopting band during relaying (inband-relay); When to be back haul link with access link use identical frequency resource; Because the inband-relay launching opportunity is disturbed (disturbing certainly) to the receiver generation of oneself, so back haul link can't emission or reception on identical frequency resource simultaneously with access link.In the TDD system; This problem is through using different uplink and downlink subframes to solve dividing with time division way between back haul link and the access link; Be that network side is the uplink and downlink sub-frame configuration that the back haul link configuration is used for back haul link, be also referred to as Un UL/DL Sub-config, be configured on the uplink and downlink subframe of back haul link; RN no longer provides the business datum service for R-UE, and carries out transfer of data with eNB.
In the LTE system, as shown in Figure 2, radio frames (frame) shown by the frame table of a filling, and subframe (subframe) shown by the oblique line frame table, and the OFDM symbol represented by blank box, and 1 10ms radio frames is made up of the subframe of 10 1ms, and a sub-frame comprises a plurality of OFDM symbols.The TDD system is provided with 7 kinds of different uplink and downlink sub-frame configuration for satisfying the heterogeneous networks demand, is also referred to as TDD UL/DL Config, and is as shown in table 1, and wherein " D " representes descending sub frame, and " U " representes sub-frame of uplink, and " S " representes special subframe.
Figure BDA0000036634060000021
Table 1
Concerning back haul link, owing to #0, #1, #5, #6 subframe need be carried broadcast message, synchronizing signal etc. and can not be configured to the Un subframe, the subframe that therefore can be used for Un DL comprises #2, #3, #4, #7, #8, #9 subframe.Configuration to Un UL subframe is then unrestricted.In addition, do not support to be used to comprise the sub-district of RN for TDD UL/DL Config#0 and #5.
Sub-frame configuration according to LTE TDD system; Corresponding Un UL/DL Sub-config is shown in table 2-6 under different TDD UL/DL Config; Wherein, DL:UL ratio representes the Un DL/UL subframe ratio that disposes, is configured to Un UL subframe in corresponding subframe position mark " U " expression; Mark " D " expression is configured to Un DL subframe, and wherein table 2 expression is used for the Un UL/DLSub-config of TDD UL/DL Config#1; Table 3 expression is used for the Un UL/DL Sub-config of TDD UL/DL Config#2; Table 4 expression is used for the Un UL/DL Sub-config of TDD UL/DL Config#3; Table 5 expression is used for the Un UL/DL Sub-config of TDDUL/DL Config#4; Table 6 expression is used for the Un UL/DL Sub-config of TDD UL/DL Config#6.Concrete TDDUL/DL Config and Un UL/DL Sub-config that network side adopts high-level signaling configuration indication RN to use.
Figure BDA0000036634060000022
Figure BDA0000036634060000031
Table 2
Figure BDA0000036634060000032
Table 3
Figure BDA0000036634060000033
Table 4
Figure BDA0000036634060000034
Table 5
Figure BDA0000036634060000035
Table 6
Un UL/DL Sub-config indicates RN by network side.Can be divided into different tabulations and layout sequence number by different TDD UL/DL Config for the Un UL/DLSub-config of TDD system; Promptly show shown in the 2-6; Also can the Un UL/DL Sub-config that all TDD UL/DL Config are corresponding in a tabulation, arrange and compile sequence number, as shown in table 7.
Figure BDA0000036634060000041
Table 7
In the LTE system, UE need set up with the transfer of data between the eNB and mix automatic repeat requests (HARQ, Hybrid Automatic Repeat Request) process and carry out corresponding feedback.
For uplink synchronous HARQ process; On institute's resources configured, carry out the transmission of uplink business data by UE; ENB (is confirmed/non-confirmed information ACK/NACK according to receiving decoding situation generation downlink feedback information; Acknowledgement/Negative Acknowledgement) is carried on Physical HARQ Indicator Channel (PHICH; Physical Hybrid-ARQ Indicator Channel) feeds back to UE; Also can in uplink authorization information (UL Grant), indicate (NDI, New Data Indicator) to the reception condition that UE indicates corresponding upstream data, have the sequential relationship of fixing between the sub-frame of uplink at uplink business data transmission place and the descending sub frame at feedback information place with new data.UE handles corresponding uplink business data transmission according to PHICH and/or NDI indication on the corresponding downstream subframe, promptly is designated as to receive when correct, finishes this ascending HARQ course, otherwise retransmits this uplink business data according to the scheduling of eNB.The Un UL number of sub frames that back haul link sub-frame configuration Un UL/DL Sub-config is comprised promptly equals the maximum Un UL HARQ number of processes that this UnUL/DL Sub-config can use; According to table 7, the maximum Un UL HARQ number of processes that Un UL/DLSub-config is corresponding is as shown in table 8.
Figure BDA0000036634060000051
Table 8
For following line asynchronous HARQ process; Resource location by eNB scheduling indication UE downlink service data transmission place; UE receives downlink service data and generates uplink ACK/NACK feedback information according to receiving the decoding situation according to indication; On corresponding Physical Uplink Control Channel (PUCCH, Physical UplinkControl Channel) resource, or Physical Uplink Shared Channel (PUSCH; Physical Uplink SharedChannel) on the resource to the eNB uploading feedback information, have fixing sequential relationship between the sub-frame of uplink at the descending sub frame at downlink service data transmission place and respective feedback information place.ENB handles the corresponding downstream business data transmission according to the feedback information of UE, and promptly UE is fed back to and receives when correct, finishes this descending HARQ process, transmits to UE otherwise eNB reschedules this downlink service data.
For back haul link; Network side to RN except that configuration TDD UL/DL Config; Also need dispose Un UL/DL Sub-config, generally can not change after the TDD UL/DL Config configuration, and UnUL/DL Sub-config possibly reshuffled RN by network side according to factors such as network demand, interference; When the Un UL/DL Sub-config that uses as RN so changes, the problem that mapping of HARQ process and feedback information are handled when just existing two kinds of Un UL/DLSub-config to switch.At present this problem still there is not corresponding solution.
Summary of the invention
In view of this; Main purpose of the present invention is to provide a kind of data processing method and device of back haul link sub-frame configuration switching; When solving the Un UL/DL Sub-config change of using as RN, the problem that mapping of back haul link HARQ process and feedback information are handled.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the data processing method that a kind of back haul link sub-frame configuration is switched, comprising:
Network side and/or RN are according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching.
In the such scheme, said back haul link handover information comprises former back haul link sub-frame configuration and target back haul link sub-frame configuration and/or switches the HARQ process transmission factor of preceding back haul link.
In the such scheme, said HARQ process transmission factor comprises following at least one: the uncompleted ascending HARQ course quantity of back haul link before switching, switch before the uncompleted descending HARQ number of processes of back haul link, the RN not feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the feedback information of the descending HARQ process of back haul link before the switching of report network side, the switching that network side is not indicated RN.
In the such scheme; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: back haul link has n uncompleted ascending HARQ course before switching; Switching the back corresponding maximum available ascending HARQ course number of target back haul link sub-frame configuration is k, and when k >=n, network side is in k back haul link of target back haul link sub-frame configuration up (Un UL) subframe; Select wherein n Un UL subframe, scheduling indication RN is carried on n uncompleted ascending HARQ course on the selected Un UL subframe successively; RN is carried on said n uncompleted ascending HARQ course on corresponding n the Un UL subframe according to the scheduling of network side indication and transmits to network side;
When k＜n; Network side is selected k in said n uncompleted ascending HARQ course; Scheduling indication RN is carried on selected k uncompleted ascending HARQ course on k the Un UL subframe of target back haul link sub-frame configuration successively, and other n-k uncompleted ascending HARQ courses are hung up or abandoned; RN is carried on said k uncompleted ascending HARQ course on corresponding k the Un UL subframe according to network side scheduling indication and transmits to network side, and said n, k are natural number.
In the such scheme; When said other n-k uncompleted ascending HARQ courses are hung up; This method further comprises: RN is carried on a said uncompleted n-k ascending HARQ course on the Un UL subframe of target back haul link sub-frame configuration according to the scheduling indication of network side, transmits to network side.
In the such scheme; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: when the maximum available ascending HARQ course number of former back haul link sub-frame configuration and target back haul link sub-frame configuration correspondence equates; The Un UL subframe that each ascending HARQ course is corresponding under RN Un UL subframe that each ascending HARQ course under the former back haul link sub-frame configuration is corresponding and the target back haul link sub-frame configuration is corresponding one by one; And will switch the preceding uncompleted ascending HARQ course of back haul link, shine upon on the corresponding Un UL subframe that is carried on target back haul link sub-frame configuration by corresponding relation and transmit to network side.
In the such scheme; The uncompleted ascending HARQ course of back haul link was carried on the corresponding Un UL subframe of target back haul link sub-frame configuration after the network side transmission before RN will switch, and this method further comprises: feedback information that network side is corresponding with each ascending HARQ course and/or scheduling retransmission information are transmitted to RN according to the corresponding time sequence of target back haul link sub-frame configuration.
In the such scheme; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: back haul link has n uncompleted descending HARQ process before switching; The corresponding maximum available descending HARQ process of target back haul link sub-frame configuration is counted k, and when k >=n, network side is dispatched the individual uncompleted descending HARQ process of n successively; N uncompleted descending HARQ process is carried on back haul link descending (Un DL) subframe to the RN transmission, and RN receives the individual uncompleted descending HARQ process of said n on corresponding Un DL subframe;
When k＜n; Network side is selected k in said n uncompleted descending HARQ process; Dispatch selected k uncompleted descending HARQ process successively; Said k uncompleted descending HARQ process is carried on the Un DL subframe to the RN transmission, other n-k uncompleted descending HARQ processes are hung up or abandoned; RN receives said k uncompleted descending HARQ process according to the indication of network side on corresponding Un DL subframe, said n, k are natural number.
In the such scheme; This method further comprises: network side is carried on the n-k that hangs up a uncompleted descending HARQ process scheduling on the Un DL subframe of target back haul link sub-frame configuration to the RN transmission, and RN receives the individual uncompleted descending HARQ process of said n-k according to the indication of network side on corresponding Un DL subframe.
In the such scheme; The uncompleted descending HARQ process of back haul link was carried on the Un DL subframe of target back haul link sub-frame configuration after the RN transmission before network side will switch, and this method further comprises: the feedback information that RN is corresponding with each descending HARQ process transmits to network side according to the corresponding time sequence of target back haul link sub-frame configuration.
In the such scheme; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: RN not before the switching of report network side the feedback information of the descending HARQ process of back haul link be carried on and switch in the target back haul link sub-frame configuration of back on first available Un UL subframe, transmit to network side.
In the such scheme; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; To not indicate feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the switching of RN to be carried on to switch for: network side in the target back haul link sub-frame configuration of back on first available Un DL subframe, transmit to RN.
In the such scheme, said network side is following any one or more than one combination: base station (eNB), the RN as network side, cell cooperative entity (MCE), gateway (GW), mobile management (MME), Evolved UTRAN (EUTRAN), operational administrative and safeguard (OAM) manager.
The data processing equipment that the present invention also provides a kind of back haul link sub-frame configuration to switch comprises:
Data processing module is used for according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching.
This device further comprises the configuration handover module, is used to obtain the back haul link handover information, and the notification data processing module.
The data processing method that the present invention provides a kind of back haul link sub-frame configuration to switch again comprises:
Back haul link all uncompleted HARQ process and/or corresponding feedback information before network side and/or RN abandon after switching and switch.
In the such scheme; Back haul link all uncompleted HARQ process and/or corresponding feedback information before said network side abandons after switching and switches; For: network side interrupts the transmission and/or the ascending HARQ course corresponding feedback transmission of Information of all uncompleted descending HARQ processes of said back haul link, and on the Un DL of target back haul link sub-frame configuration subframe, sets up new descending HARQ process and carry out transfer of data.
In the such scheme; Back haul link all uncompleted HARQ process and/or corresponding feedback information before said RN abandons after switching and switches, for: RN interrupts the transmission and/or the descending HARQ process of the back haul link corresponding feedback transmission of Information of said all uncompleted ascending HARQ courses of back haul link; According to the scheduling indication of network side, on the Un UL of target back haul link sub-frame configuration subframe, set up new ascending HARQ course and carry out transfer of data.
The data processing equipment that the present invention provides a kind of back haul link sub-frame configuration to switch again comprises: data processing module, be used for after switching, abandoning switch before back haul link all uncompleted HARQ process and/or corresponding feedback information.
Data processing method and device that a kind of back haul link sub-frame configuration provided by the invention is switched; Network side and/or RN are according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching; So, can when not introducing signaling consumption, both guarantee backwards compatibility, be compatible LTE system, solve the handling problem that the back haul link sub-frame configuration is switched corresponding HARQ process transmission in back and feedback information again.
Description of drawings
Fig. 1 is a structural representation of introducing the network of RN in the prior art;
Fig. 2 is the sketch map of wireless frame structure in the LTE system in the prior art;
Fig. 3 realizes the schematic flow sheet of the data processing method that a kind of back haul link sub-frame configuration is switched for the present invention;
Fig. 4 realizes the structural representation of the data processing equipment that a kind of back haul link sub-frame configuration is switched for the present invention.
Embodiment
Basic thought of the present invention is: network side and/or RN are according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching.
Through accompanying drawing and specific embodiment the present invention is done further detailed description below.
The present invention realizes the data processing method that a kind of back haul link sub-frame configuration is switched, and as shown in Figure 3, this method comprises following step:
Step 101: network side and/or RN obtain the back haul link handover information;
Here, said back haul link handover information comprises the HARQ process transmission factor of former back haul link sub-frame configuration and target back haul link sub-frame configuration and/or the preceding back haul link of switching;
The back haul link sub-frame configuration that back haul link used before said former back haul link sub-frame configuration referred to switch, target back haul link sub-frame configuration refer to switch the back haul link sub-frame configuration that the back back haul link uses;
Said back haul link sub-frame configuration switching is meant switches between the different back haul link sub-frame configuration under same TDD sub-frame configuration;
Said HARQ process transmission factor comprises following at least one: the uncompleted ascending HARQ course quantity of back haul link before switching, switch before the uncompleted descending HARQ number of processes of back haul link, the RN not feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the feedback information of the descending HARQ process of back haul link before the switching of report network side, the switching that network side is not indicated RN.
Step 102: after the back haul link sub-frame configuration was switched, network side and/or RN were according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching;
As; Back haul link has n uncompleted ascending HARQ course before switching, and counts k according to the maximum available ascending HARQ course that target back haul link sub-frame configuration is corresponding, and promptly Un UL number of sub frames is k; When k >=n; Network side is selected wherein n Un UL subframe in k Un UL subframe of target back haul link sub-frame configuration, scheduling indication RN is carried on n uncompleted ascending HARQ course on the selected Un UL subframe successively; RN is carried on said n uncompleted ascending HARQ course on corresponding n the Un UL subframe according to network side scheduling indication and transmits to network side; When k＜n; Network side is selected k in said n uncompleted ascending HARQ course; Scheduling indication RN is carried on selected k uncompleted ascending HARQ course on k the Un UL subframe of target back haul link sub-frame configuration successively, and other n-k uncompleted ascending HARQ courses are hung up or abandoned; RN is carried on said k uncompleted ascending HARQ course on corresponding k the Un UL subframe according to network side scheduling indication and transmits to network side, and said n, k are natural number;
Further; RN is carried on said n or k uncompleted ascending HARQ course on corresponding n or k the Un UL subframe after the network side transmission, the feedback information that network side is corresponding with each HARQ process and/or dispatch retransmission information and transmit to RN according to the corresponding time sequence of target back haul link sub-frame configuration;
Further; When said other n-k uncompleted ascending HARQ courses are hung up; Network side transmits the n-k that hangs up a uncompleted ascending HARQ course scheduling indication RN on the back haul link sub-frame of uplink of free time; RN is carried on a said uncompleted n-k ascending HARQ course on the Un UL subframe of target back haul link sub-frame configuration according to the scheduling indication of network side, transmits to network side.
And for example; When the maximum available ascending HARQ course number of former back haul link sub-frame configuration and target back haul link sub-frame configuration correspondence equates; Be that former back haul link sub-frame configuration and target back haul link sub-frame configuration are when comprising the Un UL subframe of equal number; The Un UL subframe that each ascending HARQ course is corresponding under RN Un UL subframe that each ascending HARQ course under the former back haul link sub-frame configuration is corresponding and the target back haul link sub-frame configuration is corresponding one by one; And will switch the preceding uncompleted ascending HARQ course of back haul link, shine upon on the corresponding Un UL subframe that is carried on target back haul link sub-frame configuration by corresponding relation and transmit to network side;
Further; Said RN will switch the preceding uncompleted ascending HARQ course of back haul link; Be carried on by corresponding relation mapping on the corresponding Un UL subframe of target back haul link sub-frame configuration after the network side transmission, feedback information that network side is corresponding with each HARQ process and/or scheduling retransmission information are transmitted to RN according to the corresponding time sequence of target back haul link sub-frame configuration.
And for example; Back haul link has n uncompleted descending HARQ process before switching; The corresponding maximum available descending HARQ process of target back haul link sub-frame configuration is counted k, and when k >=n, network side is dispatched the individual uncompleted descending HARQ process of n successively; N uncompleted descending HARQ process is carried on the Un DL subframe to the RN transmission, and RN receives the individual uncompleted descending HARQ process of said n on corresponding Un DL subframe; When k＜n; Network side is selected k in said n uncompleted descending HARQ process; Dispatch selected k uncompleted descending HARQ process successively; Said k uncompleted descending HARQ process is carried on the Un DL subframe to the RN transmission, other n-k uncompleted descending HARQ processes are hung up or abandoned; RN receives said k uncompleted descending HARQ process according to the indication of network side on corresponding Un DL subframe, wherein, said n, k are natural number;
Further, network side is after the Un DL subframe that the RN indication is carried, and the feedback information that RN is corresponding with each process feeds back to network side according to the corresponding time sequence of target back haul link sub-frame configuration;
Further, network side is carried on the n-k that hangs up a uncompleted descending HARQ process scheduling on the Un DL subframe of target back haul link sub-frame configuration to the RN transmission, and RN receives the individual uncompleted descending HARQ process of said n-k on corresponding Un DL subframe.
And for example; RN will be not before the switching of report network side the feedback information of the descending HARQ process of back haul link be carried on and switch in the target back haul link sub-frame configuration of back on first available Un UL subframe; Transmit to network side; Wherein, said first available Un UL subframe is and the Un DL sub-frame interval at the descending HARQ process of said back haul link place first Un UL subframe more than or equal to 4ms.
Here, if the descending HARQ process of back haul link is carried on Un DL subframe # before the said switching m, first available Un UL subframe is Un UL subframe # in the then said target back haul link sub-frame configuration (m+l), wherein, l>=4.
Also as; Network side will not indicated feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the switching of RN to be carried on to switch in the target back haul link sub-frame configuration of back on first available UnDL subframe; Transmit to RN; Wherein, said first available Un DL subframe is and the Un UL sub-frame interval at said back haul link ascending HARQ course place first Un DL subframe more than or equal to 4ms.
Here, if the back haul link ascending HARQ course is carried on Un UL subframe # before switching m, first available Un DL subframe is Un DL subframe # in the then said target back haul link sub-frame configuration (m+h), wherein, h>=4.
In the said method, said network side is following any one or multiple combination: base station (eNB), the RN as network side, cell cooperative entity (MCE), gateway (GW), mobile management (MME), Evolved UTRAN (EUTRAN), operational administrative and safeguard (OAM) manager.
In order to realize said method, the data processing equipment that the present invention also provides a kind of back haul link sub-frame configuration to switch is arranged among network side and/or the RN, and as shown in Figure 4, this device comprises:
Data processing module 41 is used for according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching;
This device further comprises configuration handover module 42, is used to obtain the back haul link handover information, and notification data processing module 41.
Said back haul link handover information comprises former back haul link sub-frame configuration and target back haul link sub-frame configuration and/or switches the HARQ process transmission factor of preceding back haul link;
Said HARQ process transmission factor comprises: the uncompleted ascending HARQ course quantity of back haul link before switching, switch before the uncompleted descending HARQ number of processes of back haul link, the RN not feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the feedback information of the descending HARQ process of back haul link before the switching of report network side, the switching that network side is not indicated RN;
When said data processing module 41 is arranged among network side and the RN, specifically can be used for:
The data processing module 41 of network side has n uncompleted ascending HARQ course according to back haul link before switching; The corresponding maximum available ascending HARQ course of target back haul link sub-frame configuration is counted k; Be that Un UL number of sub frames is k, when k >=n, the data processing module 41 of network side is in k Un UL subframe of target back haul link sub-frame configuration; Select wherein n Un UL subframe, scheduling indication RN is carried on n uncompleted ascending HARQ course on the selected Un UL subframe successively; The data processing module 41 of RN is carried on said n uncompleted ascending HARQ course on corresponding n the Un UL subframe according to the scheduling of network side indication and transmits to network side; When k＜n; The data processing module 41 of network side is selected k in said n uncompleted ascending HARQ course; Scheduling indication RN is carried on selected k uncompleted ascending HARQ course on k the Un UL subframe of target back haul link sub-frame configuration successively, and other n-k uncompleted ascending HARQ courses are hung up or abandoned; The data processing module 41 of RN is indicated according to the scheduling of network side, said k uncompleted ascending HARQ course is carried on corresponding k the Un UL subframe transmits to network side;
When said data processing module 41 is arranged among network side and the RN, specifically can also be used for:
According to feedback information that back haul link ascending HARQ course before the switching of not indicating RN is arranged and/or scheduling retransmission information; Said feedback information and/or scheduling retransmission information be carried on switch in the target back haul link sub-frame configuration of back on first available Un DL subframe, transmit to RN;
When said data processing module 41 is arranged among the RN, specifically can be used for:
Equate according to former back haul link sub-frame configuration and the corresponding maximum available ascending HARQ course number of target back haul link sub-frame configuration; It is the Un UL subframe that former back haul link sub-frame configuration and target back haul link sub-frame configuration comprise equal number; The Un UL subframe that each ascending HARQ course is corresponding under the Un UL subframe that each ascending HARQ course under the former back haul link sub-frame configuration is corresponding and the target back haul link sub-frame configuration is corresponding one by one; And will switch the preceding uncompleted ascending HARQ course of back haul link, shine upon on the corresponding Un UL subframe that is carried on target back haul link sub-frame configuration by corresponding relation and transmit to network side;
When said data processing module 41 is arranged among the RN, specifically can also be used for:
According to the feedback information of the descending HARQ process of back haul link before the switching that report network side is not arranged, said feedback information is carried on switches in the target back haul link sub-frame configuration of back on first available Un UL subframe, transmit to network side.
The data processing method that the present invention also provides a kind of back haul link sub-frame configuration to switch, this method comprises:
Back haul link all uncompleted HARQ process and/or corresponding feedback information before network side and/or RN abandon after switching and switch;
Wherein, Back haul link all uncompleted HARQ process and/or corresponding feedback information before said network side abandons after switching and switches; Specifically be meant; Network side interrupts the transmission and/or the ascending HARQ course corresponding feedback transmission of Information of all uncompleted descending HARQ processes of said back haul link, and on the Un DL of target back haul link sub-frame configuration subframe, sets up new descending HARQ process and carry out transfer of data;
Back haul link all uncompleted HARQ process and/or corresponding feedback information before said RN abandons after switching and switches; Specifically be meant; RN interrupts the transmission and/or the descending HARQ process of the back haul link corresponding feedback transmission of Information of said all uncompleted ascending HARQ courses of back haul link; According to the scheduling indication of network side, on the Un UL of target back haul link sub-frame configuration subframe, set up new ascending HARQ course and carry out transfer of data;
In order to realize said method, the present invention also provides a kind of data processing equipment of back haul link sub-frame configuration switching, and this device is arranged among network side and/or the RN, comprising:
Data processing module, be used for after switching, abandoning switch before back haul link all uncompleted HARQ process and/or corresponding feedback information;
When said data processing module is arranged on network side; The transmission and/or the ascending HARQ course corresponding feedback transmission of Information of all uncompleted descending HARQ processes of back haul link are set up new descending HARQ process and are carried out transfer of data before specifically being used to interrupt switching on the Un DL of target back haul link sub-frame configuration subframe;
When this device is arranged on network side, further comprise: the scheduling indicating module is used to dispatch indication RN and on the Un UL of target back haul link sub-frame configuration subframe, sets up new ascending HARQ course and carry out transfer of data;
When said data processing module is arranged on RN; Specifically be used to interrupt the transmission and/or the descending HARQ process of the back haul link corresponding feedback transmission of Information of said all uncompleted ascending HARQ courses of back haul link; And, on the Un UL of target back haul link sub-frame configuration subframe, set up new ascending HARQ course and carry out transfer of data according to the scheduling of network side indication.
Specify the implementation procedure and the principle of method of the present invention below in conjunction with specific embodiment.
Following each embodiment is the TDD system, describes as network side with eNB, and Un UL/DLSub-config indicates RN by eNB.
In the following example, the mode of employing table 2-6 describes, and promptly different TDD UL/DL Config is divided into different tabulations and corresponding sequence number is explained.
Embodiment one
Present embodiment is an example with TDD UL/DL Config#1, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#2 to be target back haul link sub-frame configuration.
Before switching; Back haul link has 1 uncompleted ascending HARQ course; And Un UL/DLSub-config#2 configuration comprises a Un UL subframe #8, and promptly maximum available ascending HARQ course number is 1, after then eNB scheduling indication RN switches this uncompleted ascending HARQ course is carried on the Un UL subframe #8; RN is carried on uncompleted ascending HARQ course on the Un UL subframe #8 according to the scheduling indication of eNB, transmits to eNB;
After the switching; ENB is transmitting on corresponding Un DL subframe feedback information and/or the scheduling retransmission information sequential relationship corresponding according to target back haul link sub-frame configuration at the ascending HARQ course that continues transmission on the back haul link, and RN finishes ascending HARQ course according to the feedback information of eNB or scheduling retransmission information or retransmits.
Embodiment two
Present embodiment is an example with TDD UL/DL Config#2; Former back haul link sub-frame configuration is Un UL/DLSub-config#3; ENB is according to the offered load demand, and configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#4 to be target back haul link sub-frame configuration.
The corresponding maximum available ascending HARQ course of former back haul link sub-frame configuration and target back haul link sub-frame configuration is counted k and is equated; K=1; Un UL/DL Sub-config#3 comprises a Un UL subframe #7; UnUL/DL Sub-config#4 comprises a Un UL subframe #2; Then RN is corresponding one by one with Un UL subframe #2 in the target back haul link sub-frame configuration with the Un UL subframe #7 in the former back haul link sub-frame configuration, and the Un UL subframe #7 in the former back haul link sub-frame configuration is gone up Un UL subframe #2 that the uncompleted ascending HARQ course mapping of carrying is carried on target back haul link sub-frame configuration go up and transmit to eNB.
After the switching; ENB is transmitting on corresponding Un DL subframe feedback information and/or the scheduling retransmission information sequential relationship corresponding according to target back haul link sub-frame configuration at the ascending HARQ course that continues transmission on the back haul link, and RN finishes ascending HARQ course according to the feedback information of eNB or scheduling retransmission information or retransmits.
Embodiment three
Present embodiment is an example with TDD UL/DL Config#1, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#2 to be target back haul link sub-frame configuration.
Back haul link has 2 uncompleted ascending HARQ courses before switching; And Un UL/DL Sub-config#2 only comprises a Un UL subframe #8; Be that maximum available ascending HARQ course number is 1; Because former back haul link uses Un UL/DL Sub-config#4; 2 uncompleted ascending HARQ courses that are back haul link are carried on respectively on Un UL subframe #3 and the #8; Then eNB selects to be carried under the former back haul link sub-frame configuration the uncompleted ascending HARQ course continuation transmission on the Un UL subframe #8, i.e. after scheduling indication RN switches this uncompleted ascending HARQ course is carried on the Un UL subframe #8 of Un UL/DL Sub-config#2, is carried on the upward uncompleted ascending HARQ course of Un UL subframe #3 before will switching and hangs up; RN is carried on Un UL subframe #8 upward to the eNB transmission according to the scheduling indication of eNB with selected uncompleted ascending HARQ course, hangs up or abandon another ascending HARQ course data.
After the switching; ENB is transmitting on corresponding Un DL subframe feedback information and/or the scheduling retransmission information sequential relationship corresponding according to target back haul link sub-frame configuration at the ascending HARQ course that continues transmission on the back haul link, and RN finishes ascending HARQ course according to the feedback information of eNB or scheduling retransmission information or retransmits.
Further; When Un UL subframe #8 has the free time; ENB is carried on Un UL subframe #3 and goes up uncompleted ascending HARQ course and on Un UL subframe #8, transmit before the switching that RN scheduling indication will be hung up, the uncompleted ascending HARQ course that RN will hang up according to the scheduling indication of eNB is carried on Un UL subframe #8 and upward transmits to eNB.
Embodiment four
Present embodiment is an example with TDD UL/DL Config#4, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#3 to be target back haul link sub-frame configuration.
Back haul link has 2 uncompleted descending HARQ processes before switching, and the corresponding maximum available descending HARQ process of Un UL/DL Sub-config#3 is counted k, k=3.Then eNB scheduling indication RN is carried on Un DL subframe #8 with 2 uncompleted descending HARQ processes after switching successively, and #9 is last, and to RN indication and transmission, at Un DL subframe #8, #9 is last to receive 2 uncompleted descending HARQ processes respectively to RN according to the indication of eNB.
After the switching, the feedback information that RN is corresponding with 2 HARQ processes feeds back to eNB on Un UL subframe according to the corresponding time sequence of target back haul link sub-frame configuration, and eNB finishes the HARQ process or dispatch the configuration indication to retransmit according to the feedback information of RN.
Embodiment five
Present embodiment is an example with TDD UL/DL Config#4, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#2 to be target back haul link sub-frame configuration.
Before the switching; Back haul link has 3 uncompleted descending HARQ processes; And the corresponding maximum available descending HARQ process of Un UL/DL Sub-config#2 is counted k; K=2; Said 3 uncompleted descending HARQ processes are carried on Un DL subframe #7, #8, #9 respectively in former back haul link sub-frame configuration last, and two processes that the Un DL subframe that then eNB selects with Un UL/DL Sub-config#2 comprises overlaps promptly are carried on the descending HARQ process of not completion of Un DL subframe #8, #9; Un DL subframe #8, the #9 that after switching, selected 2 uncompleted descending HARQ processes is carried on Un UL/DL Sub-config#2 successively is last to the RN transmission, and the descending HARQ process that is carried on Un DL subframe #7 in the former back haul link sub-frame configuration is hung up.RN receives 2 uncompleted descending HARQ processes according to the indication of eNB respectively in that Un DL subframe #8, #9 are last.
After the switching, the feedback information that RN is corresponding with 2 HARQ processes feeds back to eNB on Un UL subframe according to the corresponding time sequence of target back haul link sub-frame configuration, and eNB finishes the HARQ process or dispatch the configuration indication to retransmit according to the feedback information of RN.
Further, when Un DL subframe #8 or #9 have the free time, be carried on Un DL subframe #7 before the switching that eNB will hang up and go up uncompleted descending HARQ process and on the Un of free time DL subframe #8 or #9, transmit, RN receives this descending HARQ process, and feeds back.
Embodiment six
Present embodiment is an example with TDD UL/DL Config#1, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#4 to be target back haul link sub-frame configuration.
Before the switching; Back haul link uses Un UL/DL Sub-config#3; And on Un DL subframe #4, UnDL subframe #9, transmitted descending HARQ process to RN respectively, RN has generated corresponding ACK/NACK feedback information after receiving the HARQ process, and this moment, RN carried out back haul link sub-frame configuration handoff procedure according to the configuration indication of eNB; That is: RN comprises 2 Un UL subframes according to Un UL/DL Sub-config#4: Un UL subframe #3, Un UL subframe #8; All can be used for carrying feedback information and report eNB, the sub-frame interval between Un UL subframe #3 and descending HARQ process place Un DL subframe #4 and the Un DL subframe #9 is more than or equal to 4ms, and then Un UL subframe #3 is first available Un UL subframe in the target back haul link sub-frame configuration; RN carries corresponding ACK/NACK information on Un UL subframe #3, report to eNB.
Embodiment seven
Present embodiment is an example with TDD UL/DL Config#2, and eNB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DL Sub-config#4 to be target back haul link sub-frame configuration.
Before the switching; Back haul link uses Un UL/DL Sub-config#3; And RN has transmitted ascending HARQ course at Un UL subframe #7 to eNB; ENB has generated corresponding ACK/NACK feedback information after receiving the HARQ process, and this moment, RN carried out back haul link sub-frame configuration handoff procedure according to the configuration indication of eNB, that is: eNB comprises 3 Un DL subframes according to Un UL/DL Sub-config#4: Un DL subframe #3, Un DL subframe #4, Un DL subframe #8; All can be used for feedback information is indicated to RN; Sub-frame interval between Un DL subframe #3 and the ascending HARQ course place Un UL subframe #7 is more than or equal to 4ms, and then Un DL subframe #3 is first available Un DL subframe in the target back haul link sub-frame configuration, and eNB carries corresponding ACK/NACK information and indicates to RN on Un DL subframe #3.
Embodiment eight
Present embodiment is an example with TDD UL/DL Config#3; Former back haul link sub-frame configuration is Un UL/DLSub-config#0; ENB configuration indication RN carries out the back haul link sub-frame configuration and switches, and uses Un UL/DLSub-config#1 to be target back haul link sub-frame configuration.
Before the switching, back haul link has 2 descending HARQ processes and 1 ascending HARQ course to transmit, and after the switching, eNB abandons and switches preceding 2 uncompleted descending HARQ processes, and RN abandons uncompleted ascending HARQ course; Be that eNB interrupts the transmission of 2 uncompleted descending HARQ processes and to 1 ascending HARQ course corresponding feedback transmission of Information, and on the Un DL of Un UL/DL Sub-config#1 subframe, set up new HARQ process and carry out transfer of data; RN interrupts the transmission of uncompleted 1 ascending HARQ course and to 2 descending HARQ process corresponding feedback transmission of Information; And, on the Un UL of Un UL/DL Sub-config#1 subframe, set up new ascending HARQ course and carry out transfer of data according to the scheduling of eNB indication.
Through method of the present invention; Network side and/or RN can realize the data processing that the back haul link sub-frame configuration is switched; And when not introducing signaling consumption; Both guarantee backwards compatibility, be compatible LTE system, solved the handling problem that the back haul link sub-frame configuration is switched corresponding HARQ process transmission in back and feedback information again.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (19)

1. the data processing method switched of a back haul link sub-frame configuration is characterized in that this method comprises:
Network side and/or relay station (RN) are according to the back haul link handover information, and the uncompleted mixing of back haul link automatic repeat requests (HARQ) process and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching.
2. data processing method according to claim 1 is characterized in that, said back haul link handover information comprises former back haul link sub-frame configuration and target back haul link sub-frame configuration and/or switches the HARQ process transmission factor of preceding back haul link.
3. data processing method according to claim 2; It is characterized in that said HARQ process transmission factor comprises following at least one: the uncompleted ascending HARQ course quantity of back haul link before switching, switch before the uncompleted descending HARQ number of processes of back haul link, the RN not feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the feedback information of the descending HARQ process of back haul link before the switching of report network side, the switching that network side is not indicated RN.
4. data processing method according to claim 2; It is characterized in that; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching, for: back haul link has n uncompleted ascending HARQ course before switching, and switching the back corresponding maximum available ascending HARQ course number of target back haul link sub-frame configuration is k; When k >=n; Network side is selected wherein n Un UL subframe in k back haul link of target back haul link sub-frame configuration up (Un UL) subframe, scheduling indication RN is carried on n uncompleted ascending HARQ course on the selected Un UL subframe successively; RN is carried on said n uncompleted ascending HARQ course on corresponding n the Un UL subframe according to the scheduling of network side indication and transmits to network side;
When k＜n; Network side is selected k in said n uncompleted ascending HARQ course; Scheduling indication RN is carried on selected k uncompleted ascending HARQ course on k the Un UL subframe of target back haul link sub-frame configuration successively, and other n-k uncompleted ascending HARQ courses are hung up or abandoned; RN is carried on said k uncompleted ascending HARQ course on corresponding k the Un UL subframe according to network side scheduling indication and transmits to network side, and said n, k are natural number.
5. data processing method according to claim 4; It is characterized in that; When said other n-k uncompleted ascending HARQ courses are hung up; This method further comprises: RN is carried on a said uncompleted n-k ascending HARQ course on the Un UL subframe of target back haul link sub-frame configuration according to the scheduling indication of network side, transmits to network side.
6. data processing method according to claim 2; It is characterized in that; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: when the maximum available ascending HARQ course number of former back haul link sub-frame configuration and target back haul link sub-frame configuration correspondence equates; The Un UL subframe that each ascending HARQ course is corresponding under RN Un UL subframe that each ascending HARQ course under the former back haul link sub-frame configuration is corresponding and the target back haul link sub-frame configuration is corresponding one by one; And will switch the preceding uncompleted ascending HARQ course of back haul link, shine upon on the corresponding Un UL subframe that is carried on target back haul link sub-frame configuration by corresponding relation and transmit to network side.
7. according to claim 4,5 or 6 described data processing methods; It is characterized in that; The uncompleted ascending HARQ course of back haul link was carried on the corresponding Un UL subframe of target back haul link sub-frame configuration after the network side transmission before RN will switch, and this method further comprises: feedback information that network side is corresponding with each ascending HARQ course and/or scheduling retransmission information are transmitted to RN according to the corresponding time sequence of target back haul link sub-frame configuration.
8. data processing method according to claim 2; It is characterized in that; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching, for: back haul link has n uncompleted descending HARQ process before switching, and the corresponding maximum available descending HARQ process of target back haul link sub-frame configuration is counted k; When k >=n; Network side is dispatched n uncompleted descending HARQ process successively, n uncompleted descending HARQ process is carried on back haul link descending (Un DL) subframe transmits to RN, and RN receives said n uncompleted descending HARQ process on corresponding Un DL subframe;
When k＜n; Network side is selected k in said n uncompleted descending HARQ process; Dispatch selected k uncompleted descending HARQ process successively; Said k uncompleted descending HARQ process is carried on the Un DL subframe to the RN transmission, other n-k uncompleted descending HARQ processes are hung up or abandoned; RN receives said k uncompleted descending HARQ process according to the indication of network side on corresponding Un DL subframe, said n, k are natural number.
9. data processing method according to claim 8; It is characterized in that; This method further comprises: network side is carried on the n-k that hangs up a uncompleted descending HARQ process scheduling on the Un DL subframe of target back haul link sub-frame configuration to the RN transmission, and RN receives the individual uncompleted descending HARQ process of said n-k according to the indication of network side on corresponding Un DL subframe.
10. according to Claim 8 or 9 described data processing methods; It is characterized in that; The uncompleted descending HARQ process of back haul link was carried on the Un DL subframe of target back haul link sub-frame configuration after the RN transmission before network side will switch, and this method further comprises: the feedback information that RN is corresponding with each descending HARQ process transmits to network side according to the corresponding time sequence of target back haul link sub-frame configuration.
11. data processing method according to claim 2; It is characterized in that; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; For: RN not before the switching of report network side the feedback information of the descending HARQ process of back haul link be carried on and switch in the target back haul link sub-frame configuration of back on first available Un UL subframe, transmit to network side.
12. data processing method according to claim 2; It is characterized in that; Uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before said will the switching; To not indicate feedback information and/or the scheduling retransmission information of back haul link ascending HARQ course before the switching of RN to be carried on to switch for: network side in the target back haul link sub-frame configuration of back on first available Un DL subframe, transmit to RN.
13. data processing method according to claim 1; It is characterized in that said network side is following any one or more than one combination: base station (eNB), RN, cell cooperative entity (MCE), gateway (GW), mobile management (MME), Evolved UTRAN (EUTRAN), operational administrative and safeguard (OAM) manager as network side.
14. the data processing equipment that the back haul link sub-frame configuration is switched is characterized in that this device comprises:
Data processing module is used for according to the back haul link handover information, and uncompleted HARQ process of back haul link and corresponding feedback information are being transmitted under the target back haul link sub-frame configuration after the switching before will switching.
15. data processing equipment according to claim 14 is characterized in that, this device further comprises the configuration handover module, is used to obtain the back haul link handover information, and the notification data processing module.
16. the data processing method that the back haul link sub-frame configuration is switched is characterized in that this method comprises:
Back haul link all uncompleted HARQ process and/or corresponding feedback information before network side and/or RN abandon after switching and switch.
17. data processing method according to claim 16; It is characterized in that; Back haul link all uncompleted HARQ process and/or corresponding feedback information before said network side abandons after switching and switches; For: network side interrupts the transmission and/or the ascending HARQ course corresponding feedback transmission of Information of all uncompleted descending HARQ processes of said back haul link, and on the Un DL of target back haul link sub-frame configuration subframe, sets up new descending HARQ process and carry out transfer of data.
18. data processing method according to claim 16; It is characterized in that; Back haul link all uncompleted HARQ process and/or corresponding feedback information before said RN abandons after switching and switches, for: RN interrupts the transmission and/or the descending HARQ process of the back haul link corresponding feedback transmission of Information of said all uncompleted ascending HARQ courses of back haul link; According to the scheduling indication of network side, on the Un UL of target back haul link sub-frame configuration subframe, set up new ascending HARQ course and carry out transfer of data.
19. the data processing equipment that the back haul link sub-frame configuration is switched is characterized in that this device comprises:
Data processing module, be used for after switching, abandoning switch before back haul link all uncompleted HARQ process and/or corresponding feedback information.
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