CN101877859A - Relay downlink data processing method and system - Google Patents
Relay downlink data processing method and system Download PDFInfo
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- CN101877859A CN101877859A CN2009100827244A CN200910082724A CN101877859A CN 101877859 A CN101877859 A CN 101877859A CN 2009100827244 A CN2009100827244 A CN 2009100827244A CN 200910082724 A CN200910082724 A CN 200910082724A CN 101877859 A CN101877859 A CN 101877859A
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Abstract
The invention discloses a relay downlink data processing method, which is used for performing channel estimation on data transmitted by a base station by relay equipment. The method comprises that: the relay equipment detects the data part of backhaul downlink subframes and obtains common pilot or special pilot; and the relay equipment performs the channel estimation on the data part of the backhaul downlink subframes according to the common pilot or the special pilot to obtain a channel estimation value. The invention also discloses a device and a system, which are used for implementing the method.
Description
Technical field
The present invention relates to the communications field, particularly relate to the processing method and the system of relaying downlink data.
Background technology
At present; in the frame structure under time division duplex (TDD) pattern in Long Term Evolution (LTE) system specifications; the length of each radio frames is 10 milliseconds (ms); comprise two fields (half-frame); each field comprises the subframe (subframe) of 5 1ms again; each subframe can be divided into the common time slot (slot) of two 0.5ms again; in special subframe (S), comprise 3 special time slots; be descending pilot frequency time slot (Downlink Pilot Time Slot; DwPTS); protection is (GP) and uplink pilot time slot (Uplink Pilot Time Slot at interval; UpPTS); wherein subframe 0 must be a descending sub frame; synchronizing signal; the broadcast singal of non-scheduling (as MIB) all sends on this subframe, and considers the up-downgoing switching, and subframe 2 must be a sub-frame of uplink.
Two 5ms fields in radio frames can be two identical field structures, promptly be the frame structure in cycle with 5ms, and the proportional arrangement of its uplink and downlink timeslot can be 1DL: 3UL, 2DL: 2UL or 3DL: 1UL.Wherein, DL represents down link, and UL represents up link.In addition, consider the compatibility of utilization ratio of wireless resources and different frame structure, two 5ms fields also can be different frame structures, have only a field to have the special time slot of 1ms, special time slot in the 5ms field can flexible configuration be last/downlink data time slot in addition, promptly be the frame structure in cycle with 10ms, the proportional arrangement of its uplink and downlink timeslot can be 6DL: 3UL, 7DL: 2UL, 8DL: 1UL or 3DL: 5UL.To sum up, have 7 kinds of uplink/downlink frames structural arrangements types.
In the research of present LTE-A system (upgrade-system of LTE), via node (Relay Node has been proposed, RN) notion, but because also not clear and definite, can't realize at present based on the transfer of data of the LTE TDD system of via node and the demodulation of data based on the frame structure configuration of the LTE TDD system of via node.
Summary of the invention
The embodiment of the invention provides a kind of processing method and system of relaying downlink data, is used to realize that trunking carries out channel estimating and demodulation to the data that the base station sends.
A kind of processing method of relaying downlink data may further comprise the steps:
Trunking detects and obtains public guide frequency or dedicated pilot to the data area of backhaul descending sub frame;
Trunking carries out channel estimating according to described public guide frequency or described dedicated pilot to the data area of backhaul descending sub frame, obtains channel estimation value.
A kind of trunking comprises:
Detection module is used for public guide frequency or dedicated pilot are detected and obtained in the data area of backhaul descending sub frame;
Channel estimation module is used for according to described public guide frequency or described dedicated pilot channel estimating being carried out in the data area of backhaul descending sub frame, obtains channel estimation value.
A kind of communication system comprises: eNB and trunking; Wherein
ENB is used for sending the backhaul descending sub frame to trunking;
Trunking, be used for public guide frequency or dedicated pilot are detected and obtained in the data area of backhaul descending sub frame, and, channel estimating is carried out in the data area of backhaul descending sub frame according to described public guide frequency or described dedicated pilot, obtain channel estimation value.
Trunking carries out channel estimating according to public guide frequency or dedicated pilot in the embodiment of the invention, has realized that promptly trunking carries out channel estimating.
Description of drawings
Fig. 1 is based on the frame structure schematic diagram of the LTE TDD system of trunking in the embodiment of the invention;
Fig. 2 is the structural representation of MBSFN subframe in the down mixing zone in the embodiment of the invention;
Fig. 3 is the structure chart of communication system in the embodiment of the invention;
Fig. 4 is the structure chart of trunking in the embodiment of the invention;
Fig. 5 is the main methods flow chart of relaying downlink data in the embodiment of the invention;
Fig. 6 is the method flow diagram that trunking is handled the relaying downlink data in the embodiment of the invention according to public guide frequency;
Fig. 7 is the method flow diagram that trunking is handled the relaying downlink data in the embodiment of the invention according to dedicated pilot.
Embodiment
In LTE or its upgrade-system (LTE-Advanced), trunking (or claims via node (Relay Node, RN)) be used between base station and subscriber equipment, transmitting data, owing to increased via node, therefore need in the multi-hop cellular mobile communication networks system that forms, provide corresponding frame structure configuration, to realize the transfer of data in the multi-hop cellular mobile communication networks system.
Has in the future frame structure, as shown in Figure 1 based on the LTE system of via node.Have following time slot zone in each radio half frame structure:
The descending zone of inserting: evolution base station (eNB) and trunking send data to Macro UE (eNB is the subscriber equipment of service directly) and Relay UE (trunking is the subscriber equipment of service directly) respectively.
Down mixing zone: eNB sends data to trunking and Macro UE.
Up access zone: Macro UE and Relay UE send data to eNB and trunking respectively.
Up Mixed Zone: Macro UE and trunking send data to eNB.
Special time slot: the same with LTE tdd frame structure, form by DwPTS, GP and UpPTS.
In addition, the TX among Fig. 1 represents sending mode, and RX represents receiving mode.
In the down mixing zone, promptly eNB is when trunking sends data, and the frame structure of Relay is configured to multimedia broadcasting single frequency network (MBSFN) subframe, referring to the shadow region among Fig. 1.Between Relay and eNB, be backhaul feedback (backhaul) descending sub frame with the MBSFN subframe definition, between Relay and UE, be defined as the MBSFN subframe.
The structure of MBSFN subframe may be as shown in Figure 2 in the frame structure of Relay, and it comprises control section and data division.Control section comprises Physical Control Format Indicator Channel (Physical Control Format Indication Channel, PCFICH), Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) and the automatic request retransmission indicating channel of physical mixed (Physical HARQIndication Channel, PHICH).Data division comprises general Physical Downlink Shared Channel (Normal Physical Downlink Shared Channel, Normal PDSCH) and special area (comprising special-purpose PDSCH (Special PDSCH)).Control section is used for trunking and sends control signaling to Relay UE, and data division is used for the repeated link data that trunking receives the eNB transmission.Normal PDSCH is used for transmission based on the down link (downlink) of the Macro UE of R8/R10 (release 8/release 10, version 8/ version 10) or the down link (Relay link downlink) of repeated link.Special PDSCH is used to transmit Relay link downlink or R10 Macro UE downlink.K symbols represents K OFDM (OFDM) symbol, and N symbols represents N OFDM symbol, and 14-K-N symbols represents 14-K-N OFDM symbol, and M PRBs represents M Physical Resource Block.
Because the control section of MBSFN subframe is invisible for trunking, so trunking can not utilize the pilot tone in the control section to come demodulating data.
Therefore, might in special area, open up the relay and control part in the future, be used for eNB and send control signaling to trunking.This relay and control partly comprises PCFICH (R-PCFICH), R-PDCCH and the R-PHICH that is used for relaying.This relay and control part and Special PDSCH time-division.
The embodiment of the invention utilizes public guide frequency that control section is carried out demodulation, and obtains the resource location of relaying downlink data, thereby obtains the relaying downlink data, utilizes public guide frequency or dedicated pilot to carry out channel estimating again and finishes the demodulation of data.Wherein, public guide frequency is meant the pilot tone that the sub-district is exclusive, and dedicated pilot is meant the pilot tone of user-specific, and the user here refers to certain trunking.
Referring to Fig. 3, communication system comprises eNB and trunking in the present embodiment.
ENB is used for sending the backhaul descending sub frame to trunking, and the structure of backhaul descending sub frame is referring to shown in Figure 2.
Trunking is used for according to described public guide frequency or described dedicated pilot channel estimating being carried out in the data area of backhaul descending sub frame, obtains channel estimation value.Trunking also is used for according to described public guide frequency the control section of the data area of backhaul descending sub frame being carried out demodulation, and obtains the control signaling.Trunking also is used for obtaining from the control signaling resource location of relaying downlink data, and carries out data demodulates according to the resource location of channel estimation value and relaying downlink data.Trunking also is used for carrying out channel measurement according to channel estimation value, and obtains the channel measurement result, and the channel measurement result is fed back to eNB.Wherein, because control section belongs to the public domain, therefore preferably adopt public guide frequency to come demodulation.Trunking can be according to the Resource Block at self downlink data place and the public guide frequency of adjacent Resource Block when adopting public guide frequency to carry out channel estimating, and self downlink data is carried out channel estimating, can improve performance for estimating channel.
ENB also is used for sending to trunking the configuration information of the public guide frequency of the pilot tone pattern comprise public guide frequency and pilot frequency sequence; Trunking also is used for pilot tone pattern and the pilot sequence detection public guide frequency according to the public guide frequency of receiving; Perhaps, eNB also is used for sending to trunking the configuration information of the public guide frequency that comprises cell ID; Trunking also is used for pilot tone pattern and the pilot frequency sequence of determining public guide frequency according to the cell ID received and current time slots, and according to the pilot tone pattern and the pilot sequence detection public guide frequency of public guide frequency.Wherein, eNB sends the configuration information of public guide frequency to trunking by broadcast or high-level signaling.Wherein, high-level signaling is meant the signaling that Radio Resource control (RRC) layer sends.
ENB also is used for by feedback channel wave beam forming mode information being sent to trunking; Trunking also is used for determining according to figuration mode information the pilot tone pattern and the pilot frequency sequence of dedicated pilot, and according to the pilot tone pattern and the pilot sequence detection dedicated pilot of dedicated pilot.
Trunking also is used for carrying out channel measurement according to public guide frequency, and obtains the channel measurement result.It is trunking configurating downlink data resource and figuration mode that eNB also is used for according to the channel measurement result, and the result of configurating downlink data resource and figuration mode is sent to trunking by R-PDCCH.
Wherein, referring to shown in Figure 4, trunking comprises: detection module 401, channel demodulation module 402 and channel estimation module 403.
Trunking also comprises interface module 404, order demodulation module 405, measurement module 406, demodulation module 407 and memory module 408.
Referring to Fig. 5, the main method flow process according to pilot tone processing relaying downlink data in the present embodiment is as follows:
Step 501: trunking detects and obtains public guide frequency or dedicated pilot to the data area of backhaul descending sub frame.
Step 502: trunking carries out channel estimating according to described public guide frequency or described dedicated pilot to the data area of backhaul descending sub frame, obtains channel estimation value.
Because trunking both can carry out channel estimating and finish data demodulates according to public guide frequency, also can carry out channel estimating and finish data demodulates, so followingly be introduced at both of these case respectively according to dedicated pilot.
Referring to Fig. 6, the method realization flow that trunking is handled the relaying downlink data according to public guide frequency is as follows:
Step 601:eNB sends to trunking by broadcast or high-level signaling with the configuration information of public guide frequency.
Step 602: trunking detects public guide frequency according to the configuration information of the public guide frequency of receiving.Be that trunking detects R8 down public guide frequency among the relay link downlink (being Normal PDSCH).
Step 603: trunking carries out channel measurement according to channel estimation value, and the channel measurement result is reported eNB.The channel measurement result comprise channel quality indication (Channel Quality Indicator, CQI), the pre-coding matrix indication (Precoding matrix indicator, PMI), the order indication (rank indicator, RI) etc.Trunking can carry out channel measurement according to channel estimation value last time.
Step 604:eNB is trunking configurating downlink resource and figuration mode according to the channel measurement result of trunking feedback.The figuration mode comprises that wave beam forming, spatial reuse and transmission divide of concentrating or multinomial etc.
Step 605:eNB sends to trunking by R-PDCCH with configuration result.
Step 606: trunking is according to public guide frequency demodulation R-PDCCH, and the information such as position of acquisition downlink resource.Trunking can also be according to public guide frequency demodulation R-PCFICH and R-PHICH etc.
Step 607: trunking reads downlink data according to the position of downlink resource.
Step 608: trunking carries out channel estimating and finishes data demodulates downlink data according to public guide frequency.Trunking can be according to the Resource Block at self downlink data place and the public guide frequency of adjacent Resource Block, and self downlink data is carried out channel estimating and finishes data demodulates.
ENB can be according to channel measurement result execution in step 604-608 repeatedly.Therefore, step 603 can realize getting final product after step 602, does not have strict execution successively with step 604-608.If step 603 is carried out after step 604, then is to provide the channel measurement result for next execution in step 604-608.
In step 602, the configuration information of public guide frequency comprises the pilot tone pattern and the pilot frequency sequence of public guide frequency; Trunking is according to the pilot tone pattern and the pilot sequence detection public guide frequency of the public guide frequency of receiving.Perhaps, the configuration information of public guide frequency comprises cell ID, trunking is determined the pilot tone pattern and the pilot frequency sequence of public guide frequency according to the resource location time slot corresponding of the cell ID received and relaying downlink data, and according to the pilot tone pattern and the pilot sequence detection public guide frequency of public guide frequency.Perhaps, the configuration information of public guide frequency comprises cell ID, trunking is determined the pilot tone pattern of public guide frequency according to the cell ID of receiving, and determine pilot frequency sequence, and according to the pilot tone pattern and the pilot sequence detection dedicated pilot of public guide frequency according to the shared OFDM symbol of pilot tone in the pilot tone pattern of the public guide frequency of determining.Wherein, trunking has the corresponding relation of cell ID and time slot and pilot tone pattern and pilot frequency sequence in advance, and the corresponding relation of cell ID and pilot tone pattern, the corresponding relation of OFDM symbol and pilot frequency sequence.
Referring to Fig. 7, the method realization flow that trunking is handled the relaying downlink data according to dedicated pilot is as follows:
Step 701:eNB sends to trunking by broadcast or high-level signaling with the configuration information of public guide frequency.
Step 702: trunking detects public guide frequency according to the configuration information of the public guide frequency of receiving.
Step 703: trunking carries out channel measurement according to public guide frequency, and the channel measurement result is reported eNB.
Step 704:eNB is trunking configurating downlink resource and figuration mode according to the channel measurement result of trunking feedback.
Step 705:eNB sends to trunking by R-PDCCH with configuration result.
Step 706: trunking is according to public guide frequency demodulation R-PDCCH, and the position of acquisition downlink resource and figuration mode information etc.
Step 707: trunking reads downlink data according to the position of downlink resource.
Step 708: trunking is determined the pilot tone pattern and the pilot frequency sequence of dedicated pilot according to figuration mode information with according at least one in the shared OFDM symbol of pilot tone in cell ID, resource location time slot corresponding and the pilot tone pattern.Trunking is according to the pilot tone pattern of the dedicated pilot of determining and the dedicated pilot among the pilot sequence detection relay link downlink.Concrete, trunking is determined the pilot tone pattern according to figuration mode information, again according at least one definite pilot frequency sequence in the shared OFDM symbol of pilot tone in resource location time slot corresponding and the pilot tone pattern.
Step 709: trunking is according to the pilot tone pattern and the pilot sequence detection dedicated pilot of dedicated pilot.
Step 710: trunking carries out channel estimating and finishes data demodulates downlink data according to dedicated pilot.
Wherein, step 707 and 708 is two relatively independent steps, does not have strict execution successively, also can carry out simultaneously.
In addition, trunking can not determined the pilot tone pattern and the pilot frequency sequence of dedicated pilot according to figuration mode information, but by broadcast or high-level signaling the configuration information of dedicated pilot being sent to trunking by eNB, the configuration information of dedicated pilot comprises the pilot tone pattern and the pilot frequency sequence of dedicated pilot; Trunking is according to the pilot tone pattern and the pilot sequence detection dedicated pilot of the dedicated pilot of receiving.
Be used to realize that the software of the embodiment of the invention can be stored in storage mediums such as floppy disk, hard disk, CD and flash memory.
Trunking carries out demodulation according to public guide frequency to control section in the embodiment of the invention, and carries out channel estimating according to public guide frequency or dedicated pilot, has realized that promptly trunking carries out channel estimating.Trunking and then can carry out data demodulates or channel measurement according to channel estimation value.The embodiment of the invention also provides the mode of multiple acquisition pilot tone pattern and pilot frequency sequence, and the mode that multiple demodulating data is provided, and makes that application is more flexible.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. the processing method of a relaying downlink data is characterized in that, may further comprise the steps:
Trunking detects and obtains public guide frequency or dedicated pilot to the data division of backhaul descending sub frame;
Trunking is according to described public guide frequency or described dedicated pilot, and the data division of backhaul descending sub frame is carried out channel estimating, obtains channel estimation value.
2. the method for claim 1 is characterized in that, described public guide frequency is the public guide frequency in the DSCH Downlink Shared Channel in LTE version 8 systems.
3. the method for claim 1 is characterized in that, before trunking detected and obtains public guide frequency, eNB sent to trunking by broadcast or high-level signaling with the configuration information of public guide frequency; Trunking detects public guide frequency according to the configuration information of the public guide frequency of receiving.
4. method as claimed in claim 3 is characterized in that, the configuration information of described public guide frequency comprises the pilot tone pattern and the pilot frequency sequence of public guide frequency; Described trunking comprises according to the step of the configuration information detection public guide frequency of the public guide frequency of receiving: trunking is according to the pilot tone pattern and the pilot sequence detection public guide frequency of the public guide frequency of receiving; Perhaps
The configuration information of described public guide frequency comprises cell ID; Described trunking comprises according to the step of the configuration information detection public guide frequency of the public guide frequency of receiving: trunking is determined the pilot tone pattern of public guide frequency according to the cell ID of receiving, and according to the time slot at current public guide frequency place or/and the shared orthogonal frequency division multiplex OFDM symbol of the public guide frequency in the pilot tone pattern of definite public guide frequency is determined pilot frequency sequence, and according to the pilot tone pattern and the pilot sequence detection public guide frequency of public guide frequency.
5. the method for claim 1 is characterized in that, trunking carries out demodulation according to described public guide frequency to the control section in the special area of backhaul descending sub frame, and obtains the control signaling.
6. method as claimed in claim 5 is characterized in that, also comprises step: trunking obtains the resource location of relaying downlink data from described control signaling, and carries out data demodulates according to the resource location of channel estimation value and relaying downlink data.
7. method as claimed in claim 6 is characterized in that, trunking comprises according to the step that public guide frequency carries out channel estimating: trunking carries out channel estimating according to the Resource Block at the relaying downlink data place of self and the public guide frequency of adjacent Resource Block.
8. the method for claim 1 is characterized in that, before trunking carried out channel estimating according to dedicated pilot, eNB sent to trunking by broadcast or high-level signaling with the configuration information of dedicated pilot; Trunking detects dedicated pilot according to the configuration information of dedicated pilot.
9. method as claimed in claim 8 is characterized in that, the configuration information of dedicated pilot comprises the pilot tone pattern and the pilot frequency sequence of dedicated pilot; Trunking is according to the pilot tone pattern and the pilot sequence detection dedicated pilot of the dedicated pilot of receiving; Perhaps
The configuration information of dedicated pilot comprises cell ID; The figuration mode that trunking sends according to the cell ID received and eNB is determined the pilot tone pattern and the pilot frequency sequence of dedicated pilot, and according to the pilot tone pattern and the pilot sequence detection dedicated pilot of dedicated pilot.
10. the method for claim 1, it is characterized in that, before trunking carries out channel estimating according to dedicated pilot, trunking carries out demodulation and obtains the control signaling the control section in the special area of backhaul descending sub frame according to public guide frequency, from the control signaling, obtain the resource location of relaying downlink data, the figuration mode that trunking sends according to eNB is determined the pilot tone pattern of dedicated pilot, and according to the resource location time slot corresponding of relaying downlink data or/and in the pilot tone pattern of definite dedicated pilot the shared OFDM symbol of pilot tone determine pilot frequency sequence, and according to the pilot tone pattern and the pilot sequence detection dedicated pilot of dedicated pilot.
11. the method for claim 1 is characterized in that, also comprises step: trunking carries out channel measurement according to channel estimation value, and obtains the channel measurement result, and the channel measurement result is fed back to eNB.
12. method as claimed in claim 11, it is characterized in that, eNB is trunking configuration relaying downlink data resource and figuration mode according to the channel measurement result, and the resource location and the figuration mode of the relaying downlink data of configuration sent to trunking by the R-PDCCH that control section in the special area of backhaul descending sub frame comprises.
13. a trunking is characterized in that, comprising:
Detection module is used for public guide frequency or dedicated pilot are detected and obtained in the data area of backhaul descending sub frame;
Channel estimation module is used for according to described public guide frequency or described dedicated pilot channel estimating being carried out in the data area of backhaul descending sub frame, obtains channel estimation value.
14. a communication system is characterized in that, comprising: eNB and trunking; Wherein
ENB is used for sending the backhaul descending sub frame to trunking;
Trunking, be used for public guide frequency or dedicated pilot are detected and obtained in the data area of backhaul descending sub frame, and, channel estimating is carried out in the data area of backhaul descending sub frame according to described public guide frequency or described dedicated pilot, obtain channel estimation value.
15. communication system as claimed in claim 14 is characterized in that, trunking also is used for according to described public guide frequency the control section of the special area of backhaul descending sub frame being carried out demodulation, and obtains the control signaling.
16. communication system as claimed in claim 15 is characterized in that, trunking also is used for obtaining from the control signaling resource location of relaying downlink data, and carries out data demodulates according to the resource location of channel estimation value and relaying downlink data.
17. communication system as claimed in claim 14 is characterized in that, trunking also is used for carrying out channel measurement according to channel estimation value, and obtains the channel measurement result, and the channel measurement result is fed back to eNB.
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| CN2009100827244A CN101877859A (en) | 2009-04-28 | 2009-04-28 | Relay downlink data processing method and system |
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| CN102088740A (en) * | 2011-01-26 | 2011-06-08 | 大唐移动通信设备有限公司 | Resource processing method and equipment based on relay node (RN) handover |
| WO2012062179A1 (en) * | 2010-11-10 | 2012-05-18 | 中兴通讯股份有限公司 | Method and apparatus for detecting downlink control channel of relay node |
| CN102468908A (en) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | Configuration method of demodulation reference signal of backhaul link control channel and equipment |
| WO2017132855A1 (en) * | 2016-02-03 | 2017-08-10 | 华为技术有限公司 | Data processing method, base station and terminal |
| US10623160B2 (en) | 2011-08-12 | 2020-04-14 | Interdigital Patent Holdings, Inc. | Reference signal communication in a wireless network |
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| WO2008115827A2 (en) * | 2007-03-16 | 2008-09-25 | Qualcomm Incorporated | Pilot transmission by relay stations in a multihop relay communication system |
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| CN101019400A (en) * | 2004-07-16 | 2007-08-15 | 高通股份有限公司 | Incremental pilot insertion for channel and interference estimation |
| WO2008115827A2 (en) * | 2007-03-16 | 2008-09-25 | Qualcomm Incorporated | Pilot transmission by relay stations in a multihop relay communication system |
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| CN102468908A (en) * | 2010-11-05 | 2012-05-23 | 大唐移动通信设备有限公司 | Configuration method of demodulation reference signal of backhaul link control channel and equipment |
| WO2012062179A1 (en) * | 2010-11-10 | 2012-05-18 | 中兴通讯股份有限公司 | Method and apparatus for detecting downlink control channel of relay node |
| CN102468910A (en) * | 2010-11-10 | 2012-05-23 | 中兴通讯股份有限公司 | Detection method of physical downlink control channel of RN and apparatus thereof |
| CN102468910B (en) * | 2010-11-10 | 2015-07-22 | 中兴通讯股份有限公司 | Detection method of physical downlink control channel of RN and apparatus thereof |
| CN102088740A (en) * | 2011-01-26 | 2011-06-08 | 大唐移动通信设备有限公司 | Resource processing method and equipment based on relay node (RN) handover |
| CN102088740B (en) * | 2011-01-26 | 2014-12-10 | 大唐移动通信设备有限公司 | Resource processing method and equipment based on relay node (RN) handover |
| US10623160B2 (en) | 2011-08-12 | 2020-04-14 | Interdigital Patent Holdings, Inc. | Reference signal communication in a wireless network |
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| WO2017132855A1 (en) * | 2016-02-03 | 2017-08-10 | 华为技术有限公司 | Data processing method, base station and terminal |
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