CN102427396A - Information interaction method for inter-cell uplink demodulation reference signal (DMRS) and base station - Google Patents

Information interaction method for inter-cell uplink demodulation reference signal (DMRS) and base station Download PDF

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CN102427396A
CN102427396A CN2011102332008A CN201110233200A CN102427396A CN 102427396 A CN102427396 A CN 102427396A CN 2011102332008 A CN2011102332008 A CN 2011102332008A CN 201110233200 A CN201110233200 A CN 201110233200A CN 102427396 A CN102427396 A CN 102427396A
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information
dmrs
base station
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occ
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王瑜新
夏树强
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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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code

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Abstract

The invention provides an information interaction method for an inter-cell uplink demodulation reference signal (DMRS), and the method comprises: a base station sends information to adjacent cell base stations, wherein the information comprises resource occupied information and/or parameter configuration information of an uplink (DMRS). The invention further provides a base station. According to the information interaction method provided by the invention, the interaction of the relative information of the uplink DMRS among different cells can be realized.

Description

A kind of information interacting method of inter-cell uplink demodulated reference signal and base station
Technical field
The present invention relates to the communications field, relate in particular to a kind of information interacting method and base station of inter-cell uplink demodulated reference signal.
Background technology
At third generation partner program (The 3rd Generation Partnership Project; Abbreviate 3GPP as) Long Term Evolution (Long Term Evolution; Abbreviate LTE as) in the system; The mode of employing base station centralized dispatching is controlled the transmission of the Physical Uplink Shared Channel (Physical Uplink Shared Channel abbreviates PUSCH as) of subscriber equipment (User Equipment abbreviates UE as).
Uplink scheduling information (Uplink Scheduling Information) to PUSCH sends to object UE by the base station through Physical Downlink Control Channel (Physical Downlink Control Channel abbreviates PDCCH as).Uplink scheduling information comprises: resource allocation, modulation and the encoding scheme that Physical Uplink Shared Channel is relevant, the cyclic shift control informations such as (Cyclic Shift) of demodulated reference signal (Demodulation Reference Signal abbreviates DMRS as).
Physical Uplink Shared Channel adopts the single antenna port transmission in the LTE system.A system-frame (frame) comprises 10 sub-frame (subframe), and each subframe comprises 2 time slots (slot).Fig. 1 is the sketch map according to the Cyclic Prefix in the time slot of correlation technique.As shown in Figure 1, for regular circulation prefix (Normal cyclic prefix abbreviates Normal CP as), each time slot is made up of 6 data symbols and 1 demodulated reference signal; For extended cyclic prefix (Extended cyclic prefix abbreviates Extended CP as), each time slot is made up of 5 data symbols and 1 demodulated reference signal.
Demodulated reference signal DM RS is made up of a sequence on the frequency domain, and this sequence is a cyclic shift of reference signal sequence.For randomize inter-cell interference; The reference signal sequence of demodulated reference signal is according to base station configuration; Can realize timeslot-based sequence redirect (Sequence hopping) or sequence set redirect (Group hopping), this mode is called the SGH mode of time slot redirect again.That is, according to base station configuration, subscriber equipment demodulated reference signal on two time slots in a sub-frame is different, changes with time slot in a system-frame according to certain redirect pattern.
At time slot n sIn, the cyclic shift amount α of demodulated reference signal is: α=2 π n Cs/ 12, wherein,
Figure BDA0000083344740000021
In a radio frames, n s=0,1 ..., 19;
Figure BDA0000083344740000022
By the higher level parameters configuration,
Figure BDA0000083344740000023
Dispose by uplink scheduling information.n PRS(n s) generate by pseudo-random generator, specifically be expressed as n PRS ( n s ) = Σ i = 0 7 c ( 8 N Symb UL · n s + i ) · 2 i .
Uplink scheduling information is carried on Physical Downlink Control Channel, sends to target UE with certain descending control information format (Downlink Control Information format abbreviates DCI format as) by the base station.In the LTE system; Descending control information format is divided into following several kinds: DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3, and 3A etc., wherein; DCI format 0 comprises uplink scheduling information, is used to indicate the scheduling of Physical Uplink Shared Channel PUSCH.
LTE-Advanced system (being called for short the LTE-A system) is the evolution system of future generation of LTE system.In the LTE-A system, Physical Uplink Shared Channel can adopt the single antenna port transmission, also can adopt many antenna port transmission.Fig. 2 is the sketch map of the transmitting terminal base band signal process of the Physical Uplink Shared Channel that adopts many antenna ports transmission of the LTE-A system according to correlation technique; As shown in Figure 2; When many antenna ports transmitted, the LTE-A system supported the spatial reuse based on one or two code word (Codeword abbreviates CW as); The corresponding transmission block (Transport Block abbreviates TB as) of each code word.Code word will further be mapped to layer (layer), and each code word is mapped as one deck or two layer data.
Fig. 3 is the sketch map according to the precoding of the LTE-A system of correlation technique; As shown in Figure 3; LTE-A adopts based on code book (Codebook; Be called code book again) linear predictive coding technology (Precoding), precoding technique is that a kind of channel condition information (Channel Status Information abbreviates CSI as) that utilizes carries out preliminary treatment to improve the technology of multiaerial system performance at transmitting terminal to signal.A kind of approach that transmitting terminal obtains CSI is the feedback through receiving terminal.In order to reduce feedback overhead, the general mode that adopts is to preserve identical code book at receiving terminal with transmitting terminal.Receiving terminal is according to current channel conditions; The pre-coding matrix that in code book, select to be fit to and with its index value (Precoding Matrix Index in set; Abbreviate PMI as) feed back to transmitting terminal; Transmitting terminal finds pre-coding matrix according to the pre-coding matrix index of feedback, and carries out precoding to sending signal.The Mathematical Modeling of data precoding is y=HWs+n, and wherein, y is for receiving signal phasor, and H is a channel coefficient matrix, and W is a pre-coding matrix, and s is a signal phasor, and n is a noise vector.
In the LTE-A system, when Physical Uplink Shared Channel adopted many antenna ports to transmit, the demodulated reference signal of each layer data equally carried out precoding with each layer data.And the demodulated reference signal of different layers data; Comprise demodulated reference signal to the multi-layer data of the same subscriber equipment of single user's multi-input multi-output system (SU-MIMO); And the demodulated reference signal of the multi-layer data of a plurality of subscriber equipmenies of multiuser mimo system (MU-MIMO); Through using different demodulated reference signal cyclic shifts (CS) and/or quadrature mask (Orthogonal Cover Code; Abbreviate OCC as) carry out orthogonalization, to distinguish the multiplexing different layers data of user's space or to distinguish different users.Wherein, quadrature mask OCC is [+1 ,+1] and [+1 ,-1], acts on the demodulated reference signal on interior two time slots of a sub-frame (Subframe) (Slot).
At present; In the Standard Edition that 3GPP formulates, the LTE standard version is the 8th edition (Release 8) and the 9th edition (Release 9), and the LTE-A standard version is the 10th edition (Release 10); Be abbreviated as Rel-8 respectively; Rel-9 and Rel-10, the LTE-A standard possibly also comprise later release, such as Rel-11.In the Rel-10 version, the base station can be indicated the cyclic shift/OCC information of the demodulated reference signal that is used for the PUSCH that dispatches through DCI format 0 and DCI format 4, and is as shown in table 1 at present.
The cyclic shift zone of the up associated DC I format of table 1
Figure BDA0000083344740000031
[w (λ)(0) w (λ)(1)] mapping table
Figure BDA0000083344740000032
When using the quadrature mask to demodulated reference signal orthogonalization; Joint-detection need be carried out to the demodulated reference signal on two time slots in the sub-frame in the base station, thereby to require subscriber equipment demodulated reference signal on two time slots in a sub-frame must be the same.In this case, can not use the SGH mode of time slot redirect in the LTE system.But, the SGH mode of subframe redirect has been proposed in correlation technique for randomize inter-cell interference as far as possible.Promptly; According to base station configuration; Subscriber equipment demodulated reference signal on two time slots in a sub-frame is the same, and the demodulated reference signal in a system-frame on each subframe is different, changes with subframe in a system-frame according to certain redirect pattern.
Coordinate multipoint (Coordinated Multi-Point, be called for short CoMP) transmission technology is to utilize the transmitting antenna cooperation transmission of a plurality of sub-districts to realize the higher capacity and the reliable transmission of cell edge place Radio Link, can effectively solve the cell edge interference problem.Fig. 4 is the sketch map according to the down collaboration multicast communication of correlation technique; As shown in Figure 4; Descending CoMP can be divided into two types: Combined Treatment/joint transmission (Joint Processing/Joint Transmission; Abbreviate JP/JT as) and cooperative scheduling/wave beam forming (Coordinated Scheduling/Beamforming abbreviates CS/CB as).In JT, data are sent from a plurality of sub-districts simultaneously, and send data, scheduling and channel condition information and only between a plurality of launch points that cooperation is concentrated, carry out mutual; And in CS/CB, have only Serving cell to send data to UE, scheduling and Beamforming information are concentrated mutual in the CoMP cooperation.Participate in the different sub-district of transmission or cooperation and just form a cooperation collection, as far as some UE, cooperation concentrates that 1 sub-district is arranged is Serving cell, and remaining sub-district is a cooperation cell.
Fig. 5 is the sketch map according to the uplink coordinated multicast communication of correlation technique; As shown in Figure 5; UE1 sends data to the base station of Serving cell and cooperation cell, and the base station that the base station of cooperation cell is sent to the Serving cell under this UE1 with the data that receive through X2 interface again merges to receive handles.In order to let the base station of cooperation cell can correctly receive the data of UE1; The configuration parameter information of the up DMRS that UE1 sends need be known in the base station of cooperation cell; So that can let the base station of cooperation cell that DMRS is done channel estimating, thus the data that correctly receive UE and sent.
To how letting the base station of cooperation cell that the DMRS of up CoMP UE is carried out channel estimating in the correlation technique, make the base station of cooperation cell can correctly receive the problem of the data of UE, effective solution is not proposed at present as yet.
Summary of the invention
Main purpose of the present invention is to provide a kind of exchange method and base station of information of inter-cell uplink measuring reference signals, to fail correctly to receive the problem of up CoMP UE data in the base station that solves cooperation cell in the above-mentioned correlation technique at least.
In order to address the above problem, the invention provides a kind of information interacting method of inter-cell uplink demodulated reference signal, comprising:
Message is sent to its neighbor cell base station in the base station, comprises the resource occupation information and/or the parameter configuration of uplink demodulation reference signal (DMRS) in the said message.
Further, said method also can have following characteristics, and said message is information on load message or the message that is used for interactive cooperation multiple spot (CoMP) information.
Further; One of said method also can have following characteristics, below the resource occupation information of said up DMRS and/or parameter configuration comprise at least: go up the cyclic shift area information of line correlation descending control information format (DCI format), the circular shift information of high-level signaling configuration, the set of dispense information Δ of Physical Uplink Shared Channel (PUSCH) Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the quadrature mask (OCC) of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
Further, said method also can have following characteristics, and the resource occupation information of said up DMRS and/or parameter configuration use an information word of X2 interface to represent.
Further, said method also can have following characteristics, in the said information word, uses bit character to represent the DMRS frequency domain resource occupied information on each Physical Resource Block (PRB), whether has up DMRS on the corresponding PRB of each bit.
Further, said method also can have following characteristics, in the said information word, uses bit character to represent the OCC occupied information of the DMRS on each PRB, the OCC occupied information of the DMRS on the corresponding PRB of each bit; Perhaps, adopt the OCC occupied information of the DMRS that enumerates character or each user of integer character representation, different enumerated values or integer value represent to use different OCC.
Further, said method also can have following characteristics, in the said information word, uses enumeration type character or each user's of integer character representation appointed information, and different enumerated values or integer value represent that said appointed information is different;
The said cyclic shift area information that designates the information as the up associated DC I format of DMRS, or the circular shift information of the high-level signaling of DMRS configuration, or the set of dispense information Δ of the PUSCH of DMRS Ss, or the DMRS spatial reuse number of plies, or each user's DMRS frequency domain original position, or DMRS sequence length, group frequency hopping enable indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication.
Further, said method also can have following characteristics, arbitrary base station that concentrate for cooperation said base station, and said neighbor cell base station is that other base stations except that said base station are concentrated in said cooperation; Perhaps, said base station is the base station of the concentrated Serving cell of said cooperation, and said neighbor cell base station is concentrated the base station of cooperation cell for cooperation.
The present invention also provides a kind of base station, comprising:
Module is set: be used for generation and comprise the resource occupation information of uplink demodulation reference signal (DMRS) and/or the message of parameter configuration;
Sending module: be used for sending said message to the neighbor cell base station of said base station.
Further, above-mentioned base station also can have following characteristics, and said message is information on load message or the message that is used for interactive cooperation multiple spot (CoMP) information.
Further; One of above-mentioned base station also can have following characteristics, below said resource occupation information that up DMRS in the message that module generates is set and/or parameter configuration comprise at least: go up the cyclic shift area information of line correlation descending control information format (DCI format), the circular shift information of high-level signaling configuration, the set of dispense information Δ of Physical Uplink Shared Channel (PUSCH) Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the quadrature mask (OCC) of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
Further, above-mentioned base station also can have following characteristics, said resource occupation information and/or the parameter configuration that a information word that module also is used to use X2 interface is represented said up DMRS is set.
Further; Above-mentioned base station also can have following characteristics; The said module that is provided with also is used for using bit character to represent the DMRS frequency domain resource occupied information on each Physical Resource Block (PRB) in said information word, whether has up DMRS on the corresponding PRB of each bit.
Further, above-mentioned base station also can have following characteristics, and the said module that is provided with also is used in said information word, uses bit character to represent the OCC occupied information of the DMRS on each PRB, the OCC occupied information of the DMRS on the corresponding PRB of each bit; Perhaps, adopt the OCC occupied information of the DMRS that enumerates character or each user of integer character representation, different enumerated values or integer value represent to use different OCC.
Further, above-mentioned base station also can have following characteristics, and the said module that is provided with also is used in said information word, uses enumeration type character or each user's of integer character representation appointed information, and different enumerated values or integer value represent that said appointed information is different;
The said cyclic shift area information that designates the information as the up associated DC I format of DMRS, or the circular shift information of the high-level signaling of DMRS configuration, or the set of dispense information Δ of the PUSCH of DMRS Ss, or the DMRS spatial reuse number of plies, or each user's DMRS frequency domain original position, or DMRS sequence length, group frequency hopping enable indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication.
Further, above-mentioned base station also can have following characteristics, arbitrary base station that concentrate for cooperation said base station, and perhaps, said base station is the base station of the concentrated Serving cell of said cooperation.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the Cyclic Prefix in the time slot of correlation technique;
Fig. 2 is the sketch map of the transmitting terminal base band signal process of the Physical Uplink Shared Channel that adopts many antenna ports transmission of the LTE-A system according to correlation technique;
Fig. 3 is the sketch map according to the precoding of the LTE-A system of correlation technique;
Fig. 4 is the sketch map according to the down collaboration multicast communication of correlation technique;
Fig. 5 is the sketch map according to the uplink coordinated multicast communication of correlation technique;
Fig. 6 is the information interacting method flow chart of embodiment of the invention inter-cell uplink demodulated reference signal;
Fig. 7 is an embodiment of the invention base station block diagram.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
To achieve these goals; According to an aspect of the present invention; A kind of exchange method of information of inter-cell uplink measuring reference signals is provided; May further comprise the steps: message is sent to the base station of its neighbor cell in the base station, wherein, comprises resource occupation information and/or the parameter configuration of up DMRS in this message.
Preferably, above-mentioned message is information on load message or the message that is used for mutual CoMP information.
Preferably, the resource occupation information of up DMRS and/or parameter configuration are resource occupation information and/or the parameter configuration of up CoMPDMRS.Promptly mutual DMRS information is the user's of up CoMP transmission DMRS information between this moment of the base station.
One of below preferably, the resource occupation information of up DMRS and/or parameter configuration comprise at least: the cyclic shift area information of up associated DC I format, the circular shift information of high-level signaling configuration, the set of dispense information Δ of PUSCH Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the OCC of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
Preferably, the base station is before message is sent in the base station of its neighbor cell, and this method also comprises: the information word that the message through X2 interface is provided with up DMRS is represented resource occupation information and/or the parameter configuration of up DMRS.
Preferably, the information word that up DMRS is set of the message through X2 interface representes that resource occupation information and/or the parameter configuration of up DMRS are one of below comprising at least:
(1) adopt bit character (BIT STRING) to represent each PRB (Physical Resource Block; Physical Resource Block) the DMRS frequency domain resource occupied information on; Wherein, The corresponding PRB of each bit, on each bit, 0 and 1 representes whether there is up CoMPDMRS on this PRB respectively.
(2) adopt bit character to represent the OCC occupied information of the DMRS on each PRB, wherein, the corresponding PRB of each bit, on each bit, 0 with the 1 different OCC of expression use respectively; Perhaps, adopt enumeration type character (ENUMERATE) or integer character (INTEGER) to represent the OCC occupied information of each user's DMRS, wherein, different enumerated values or integer value represent to use different OCC.
(3) the cyclic shift area information of the up associated DC I format of employing enumeration type character or each user's of integer character representation DMRS; Wherein, different enumerated value or the integer value cyclic shift area information of representing to use different up associated DC I format.
(4) circular shift information of the high-level signaling of employing enumeration type character or each user's of integer character representation DMRS configuration, wherein, different enumerated values or integer value represent to use the circular shift information of different high-level signaling configurations.
(5) the set of dispense information Δ of the PUSCH of employing enumeration type character or each user's of integer character representation DMRS Ss, wherein, different enumerated values or integer value represent to use the set of dispense information Δ of different PUSCH Ss
(6) employing enumeration type character or each user's of integer character representation the DMRS spatial reuse number of plies, wherein, different enumerated values or integer value represent to use the different DMRS spatial reuse numbers of plies.
(7) employing enumeration type character or each user's of integer character representation DMRS frequency domain original position, wherein, different enumerated values or integer value represent to use different DMRS frequency domain original positions.
(8) employing enumeration type character or each user's of integer character representation DMRS sequence length, wherein, different enumerated values or integer value represent to use different DMRS sequence lengths.
(9) adopt enumeration type character or integer character or bit character to represent that each user's group frequency hopping enables indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication; Wherein, different enumerated value or integer values represent to organize whether frequency hopping enables or whether sequence hopping enables or whether effective the sequence set frequency hopping does not enable.
Preferably, said base station is the base station of the concentrated arbitrary sub-district of cooperation, and said neighbor cell base station is the cooperation cell base station in the cooperation; Perhaps, said base station is the base station of Serving cell, and said neighbor cell is the base station of other concentrated sub-districts of cooperation.
Through the present invention; Adopt the base station to send and comprise the resource occupation information of up DMRS and/or the message of parameter configuration to the base station of its neighbor cell; The base station that receives this message is carried out channel estimating according to the resource occupation information of up DMRS and/or parameter configuration to the DMRS of up CoMP UE; Receive thereby carry out proper data, solved the problem that up CoMP UE data are failed correctly to receive in the base station of cooperation cell in the correlation technique, improved systematic function.
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment one
Present embodiment provides a kind of exchange method of information of inter-cell uplink measuring reference signals; Resource occupation information and/or parameter configuration through mutual up CoMP DMRS; The base station that receives this message is carried out channel estimating according to the resource occupation information of up DMRS and/or parameter configuration to the DMRS of up CoMP UE; Thereby carrying out proper data receives; Solve the base station of cooperation cell in the correlation technique and failed correctly to receive the problem of up CoMP UE data, improved the transmission performance of up CoMP system.
As shown in Figure 6, the information interacting method of minizone uplink demodulation reference signal comprises in the CoMP system of present embodiment:
Step 602, message is sent to the base station of neighbor cell in the base station, comprises resource occupation information and/or the parameter configuration of up CoMP DMRS in this message;
Above-mentioned message can be for information on load (LOAD INFORMATION) message or for being used for the message of mutual CoMP information.
Step 604; Channel estimating is carried out according to the resource occupation information of the said up DMRS that receives and/or scheduling strategy that parameter configuration is confirmed this sub-district and/or to the DMRS of up CoMP UE in the base station that receives this message, receives thereby carry out proper data.
Wherein, said scheduling strategy comprises: when the base station receives the resource occupation information of said up DMRS, avoid the user of scheduling cell edge on corresponding PRB as far as possible.
With the CoMP system is example, and above-mentioned information interacting method can comprise the steps:
Step 1, in the CoMP system, up CoMP DMRS is sent in resource occupation information from the base station of each sub-district that cooperation is concentrated to the base station of its cooperation cell and/or parameter configuration.
Preferably, new IE item: up DMRS Indication (indication) on the definition X2 interface, resource occupation information and/or the parameter configuration of using this new IE item to indicate up CoMP DMRS.Wherein, information on load message (LOAD INFORMATION message) or be used for using on the message of mutual CoMP information and should indicate IE item, the resource occupation information and/or the parameter configuration of indicating each up CoMP user's DMRS by up DMRS.
Step 2; The scheduling strategy that this sub-district is confirmed according to received said resource occupation information and/or parameter configuration in each base station (promptly; When the base station receives said up CoMP resource occupation information; Avoid the user of scheduling cell edge on corresponding PRB as far as possible) and/or the DMRS of up CoMP UE carried out channel estimating, receive thereby carry out proper data.
The IE form that above-mentioned up DMRS indication IE item adopts can be following preferred implementation:
Preferred implementation one:
Adopt bit character (BIT STRING) to represent the DMRS frequency domain resource occupied information on each PRB, wherein, the corresponding PRB of each bit; On each bit, 0 and 1 representes whether there is up CoMP DMRS on this PRB respectively, such as; There is up CoMP DMRS in 1 expression, and there is not up CoMP DMRS in 0 expression, certainly; Can 0 expression have up CoMP DMRS, there is not up CoMP DMRS in 1 expression, and is as shown in table 1 below yet.
The frequency domain resource occupied information indication 1 of the up DMRS of table 1
Figure BDA0000083344740000111
Preferred implementation two:
With the OCC occupied information of the DMRS on corresponding 1 PRB of each bit in the bit character, that is, and the 1st the corresponding PRB0 of bit, the 2nd the corresponding PRB1 of bit, by that analogy.If each the bit value in the bit character is " 1 ", OCC is used in expression [1-1], OCC is used in value " 0 " expression [1 1], perhaps value is " 0 ", OCC is used in expression [1-1], OCC is used in value " 1 " expression [1 1], as shown in table 2 below.
The OCC Physical Resource Block of the up DMRS of table 2 takies indication 1
Figure BDA0000083344740000121
Perhaps, adopt enumeration type character (ENUMERATE) or integer character (INTEGER) to represent the OCC occupied information of each user's DMRS, wherein, different enumerated values or integer value represent to use different OCC.
The OCC Physical Resource Block of the up DMRS of table 3 takies indication 2
Figure BDA0000083344740000122
Preferred implementation three:
Adopt enumeration type character (ENUMERATE) or integer character (INTEGER) to represent the cyclic shift area information of up associated DC I format of each user's DMRS; Wherein, different enumerated value or the integer value cyclic shift area information of representing to use different up associated DC I format.
The cyclic shift area information of the up associated DC I format of the up DMRS of table 4
Figure BDA0000083344740000131
The span of cyclic shift is represented in above-mentioned (0,1,2,3,4,5,6,7).
Preferred implementation four:
The circular shift information of the high-level signaling configuration of employing enumeration type character or each user's of integer character representation DMRS, wherein, different enumerated values or integer value represent to use the circular shift information of different high-level signaling configurations.
The circular shift information of the high-level signaling configuration of the up DMRS of table 5
Figure BDA0000083344740000132
Preferred implementation five:
The set of dispense information Δ of the PUSCH of employing enumeration type character or each user's of integer character representation DMRS Ss, wherein, different enumerated values or integer value represent to use the set of dispense information Δ of different PUSCH Ss
The set of dispense information Δ of the PUSCH of the up DMRS of table 6 Ss
Figure BDA0000083344740000141
Preferred implementation six
Adopt enumeration type character or each user's of integer character representation the DMRS spatial reuse number of plies, wherein, different enumerated values or integer value represent to use the different DMRS spatial reuse numbers of plies.
The spatial reuse number of plies of the up DMRS of table 7
Figure BDA0000083344740000142
Preferred implementation seven:
Adopt enumeration type character or each user's of integer character representation DMRS frequency domain original position, wherein, different enumerated values or integer value represent to use different DMRS frequency domain original positions.
The frequency domain original position of the up DMRS of table 8
Figure BDA0000083344740000143
Preferred implementation eight:
Adopt enumeration type character or each user's of integer character representation DMRS sequence length, wherein, different enumerated values or integer value represent to use different DMRS sequence lengths.
The sequence length of the up DMRS of table 9
Figure BDA0000083344740000151
Preferred implementation nine:
Adopt enumeration type character or integer character or bit character to represent that each user's group frequency hopping enables indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication; Wherein, different enumerated value or integer values represent to organize whether frequency hopping enables or whether sequence hopping enables or whether effective the sequence set frequency hopping does not enable.
The group frequency hopping of the up DMRS of table 10 enables indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication
Figure BDA0000083344740000152
Provide an embodiment who carries the IE item of resource occupation information and/or parameter configuration below, as shown in table 11.
Figure BDA0000083344740000161
The embodiment of the invention also provides a kind of base station, and is as shown in Figure 7, comprising:
Module is set: be used for generation and comprise the resource occupation information of uplink demodulation reference signal (DMRS) and/or the message of parameter configuration;
Sending module: be used for sending said message to the neighbor cell base station of said base station.
Wherein, said message is information on load message or the message that is used for interactive cooperation multiple spot (CoMP) information.
One of below wherein, said resource occupation information that up DMRS in the message that module generates is set and/or parameter configuration comprise at least: go up the cyclic shift area information of line correlation descending control information format (DCI format), the circular shift information of high-level signaling configuration, the set of dispense information Δ of Physical Uplink Shared Channel (PUSCH) Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the quadrature mask (OCC) of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
Wherein, said resource occupation information and/or the parameter configuration that a information word that module also is used to use X2 interface is represented said up DMRS be set.Concrete method for expressing reference method embodiment.
In sum; Information interacting method through minizone uplink demodulation reference signal in the CoMP system of the embodiment of the invention; Can indicate the parameter of demodulated reference signal; Satisfying the requirement of up CoMP transmission, the problem of up CoMPUE data is failed correctly to receive in the base station that has solved the cooperation cell in the correlation technique, has improved up CoMP systematic function.
Obviously; It is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize that they can concentrate on the single calculation element with the general calculation device; Perhaps be distributed on the network that a plurality of calculation element forms; Alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby can they be stored in the storage device; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (16)

1. the information interacting method of an inter-cell uplink demodulated reference signal is characterized in that, comprising:
Message is sent to its neighbor cell base station in the base station, comprises the resource occupation information and/or the parameter configuration of uplink demodulation reference signal (DMRS) in the said message.
2. the method for claim 1 is characterized in that, said message is information on load message or the message that is used for interactive cooperation multiple spot (CoMP) information.
3. the method for claim 1; One of it is characterized in that, below the resource occupation information of said up DMRS and/or parameter configuration comprise at least: the cyclic shift area information of line correlation descending control information format (DCI format), the circular shift information of high-level signaling configuration, the set of dispense information Δ of Physical Uplink Shared Channel (PUSCH) gone up Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the quadrature mask (OCC) of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
4. the method for claim 1 is characterized in that, the resource occupation information of said up DMRS and/or parameter configuration use an information word of X2 interface to represent.
5. method as claimed in claim 4 is characterized in that, in the said information word, uses bit character to represent the DMRS frequency domain resource occupied information on each Physical Resource Block (PRB), whether has up DMRS on the corresponding PRB of each bit.
6. method as claimed in claim 4 is characterized in that, in the said information word, uses bit character to represent the OCC occupied information of the DMRS on each PRB, the OCC occupied information of the DMRS on the corresponding PRB of each bit; Perhaps, adopt the OCC occupied information of the DMRS that enumerates character or each user of integer character representation, different enumerated values or integer value represent to use different OCC.
7. method as claimed in claim 4 is characterized in that, in the said information word, uses enumeration type character or each user's of integer character representation appointed information, and different enumerated values or integer value represent that said appointed information is different;
The said cyclic shift area information that designates the information as the up associated DC I format of DMRS, or the circular shift information of the high-level signaling of DMRS configuration, or the set of dispense information Δ of the PUSCH of DMRS Ss, or the DMRS spatial reuse number of plies, or each user's DMRS frequency domain original position, or DMRS sequence length, group frequency hopping enable indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication.
8. like the arbitrary described method of claim 1 to 7, it is characterized in that, arbitrary base station that concentrate for cooperation said base station, said neighbor cell base station is that other base stations except that said base station are concentrated in said cooperation; Perhaps, said base station is the base station of the concentrated Serving cell of said cooperation, and said neighbor cell base station is concentrated the base station of cooperation cell for cooperation.
9. a base station is characterized in that, comprising:
Module is set: be used for generation and comprise the resource occupation information of uplink demodulation reference signal (DMRS) and/or the message of parameter configuration;
Sending module: be used for sending said message to the neighbor cell base station of said base station.
10. base station as claimed in claim 9 is characterized in that, said message is information on load message or the message that is used for interactive cooperation multiple spot (CoMP) information.
11. base station as claimed in claim 9; One of it is characterized in that, below said resource occupation information that up DMRS in the message that module generates is set and/or parameter configuration comprise at least: the cyclic shift area information of line correlation descending control information format (DCI format), the circular shift information of high-level signaling configuration, the set of dispense information Δ of Physical Uplink Shared Channel (PUSCH) gone up Ss, the group frequency hopping enables to indicate, sequence hopping enables to indicate, the sequence set frequency hopping does not enable to indicate, the quadrature mask (OCC) of DMRS enables indication, frequency domain original position, DMRS sequence length, frequency domain resource take indication, the DMRS spatial reuse number of plies.
12. base station as claimed in claim 9 is characterized in that, said resource occupation information and/or the parameter configuration that a information word that module also is used to use X2 interface is represented said up DMRS is set.
13. base station as claimed in claim 12; It is characterized in that; The said module that is provided with also is used for using bit character to represent the DMRS frequency domain resource occupied information on each Physical Resource Block (PRB) in said information word, whether has up DMRS on the corresponding PRB of each bit.
14. base station as claimed in claim 12 is characterized in that, the said module that is provided with also is used in said information word, uses bit character to represent the OCC occupied information of the DMRS on each PRB, the OCC occupied information of the DMRS on the corresponding PRB of each bit; Perhaps, adopt the OCC occupied information of the DMRS that enumerates character or each user of integer character representation, different enumerated values or integer value represent to use different OCC.
15. base station as claimed in claim 12 is characterized in that, the said module that is provided with also is used in said information word, uses enumeration type character or each user's of integer character representation appointed information, and different enumerated values or integer value represent that said appointed information is different;
The said cyclic shift area information that designates the information as the up associated DC I format of DMRS, or the circular shift information of the high-level signaling of DMRS configuration, or the set of dispense information Δ of the PUSCH of DMRS Ss, or the DMRS spatial reuse number of plies, or each user's DMRS frequency domain original position, or DMRS sequence length, group frequency hopping enable indication or sequence hopping enables indication or the sequence set frequency hopping does not enable indication.
16. like the arbitrary described base station of claim 9 to 15, it is characterized in that, arbitrary base station that concentrate for cooperation said base station, perhaps, said base station is the base station of the concentrated Serving cell of said cooperation.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105191246A (en) * 2013-05-08 2015-12-23 瑞典爱立信有限公司 Providing orthogonality for reference signals by circular rotation of a base sequence in the frequency domain
CN105393625A (en) * 2013-07-19 2016-03-09 株式会社Ntt都科摩 Base station, user device and interference reduction method
CN106411486A (en) * 2015-07-31 2017-02-15 电信科学技术研究院 Method and apparatus for transmitting and receiving uplink demodulation pilot carrier
EP3029980A4 (en) * 2013-07-31 2017-04-12 Samsung Electronics Co., Ltd. Method and device for performing coordination between radio access points in wireless communication system
WO2017118442A1 (en) * 2016-01-08 2017-07-13 中兴通讯股份有限公司 Resource allocation method and device
CN107181580A (en) * 2016-03-11 2017-09-19 北京信威通信技术股份有限公司 Extend the method for the supported maximum UE port numbers of up DMRS
WO2018036508A1 (en) * 2016-08-25 2018-03-01 华为技术有限公司 Signal transmission method and device
WO2018127158A1 (en) * 2017-01-06 2018-07-12 华为技术有限公司 Data transmission method, network equipment, and terminal equipment
CN108964856A (en) * 2017-05-27 2018-12-07 中兴通讯股份有限公司 A kind of application method and device of reference signal configuration information
CN109787728A (en) * 2017-11-13 2019-05-21 华为技术有限公司 A kind of ascending transmission method and terminal
CN110225591A (en) * 2013-03-28 2019-09-10 三星电子株式会社 Downlink signaling in TDD communication for uplink-downlink configuration
US10499392B2 (en) 2016-01-08 2019-12-03 Zte Corporation Method and apparatus for resource allocation
CN111630783A (en) * 2017-11-17 2020-09-04 株式会社Ntt都科摩 User terminal and wireless communication method
CN113473600A (en) * 2020-03-30 2021-10-01 中国电信股份有限公司 Data transmission method, communication network device, base station, and storage medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113472491B (en) * 2020-03-30 2023-05-02 中国电信股份有限公司 Data transmission method, information interaction device, base station and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101777940A (en) * 2009-01-12 2010-07-14 华为技术有限公司 Method, device and system for transmitting uplink information
CN101882980A (en) * 2010-05-06 2010-11-10 中兴通讯股份有限公司 Method and system for indicating uplink demodulation reference signal
CN101917765A (en) * 2010-08-13 2010-12-15 中兴通讯股份有限公司 Configuration method and system for measuring reference signal
US20110158191A1 (en) * 2009-12-31 2011-06-30 Samsung Electronics Co., Ltd. Uplink demodulation reference signal design for mimo transmission

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8797950B2 (en) * 2009-05-27 2014-08-05 Texas Instruments Incorporated Dual-layer beam forming in cellular networks
KR101567370B1 (en) * 2009-10-22 2015-11-23 삼성전자주식회사 Apparatus and method for cooperative transmission/reception in broadband wireless communication system
CN102065557B (en) * 2010-12-31 2016-03-30 中兴通讯股份有限公司 For measuring reference signals sending method and the system of cooperative multicast system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101777940A (en) * 2009-01-12 2010-07-14 华为技术有限公司 Method, device and system for transmitting uplink information
US20110158191A1 (en) * 2009-12-31 2011-06-30 Samsung Electronics Co., Ltd. Uplink demodulation reference signal design for mimo transmission
CN101882980A (en) * 2010-05-06 2010-11-10 中兴通讯股份有限公司 Method and system for indicating uplink demodulation reference signal
CN101917765A (en) * 2010-08-13 2010-12-15 中兴通讯股份有限公司 Configuration method and system for measuring reference signal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
曾召华: "ICIC技术", 《LTE基础原理与关键技术》 *

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US10505683B2 (en) 2013-07-31 2019-12-10 Samsung Electronics Co., Ltd. Method and device for performing coordination between radio access points in wireless communication system
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US10499392B2 (en) 2016-01-08 2019-12-03 Zte Corporation Method and apparatus for resource allocation
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