CN101882980A - Method and system for indicating uplink demodulation reference signal - Google Patents
Method and system for indicating uplink demodulation reference signal Download PDFInfo
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- CN101882980A CN101882980A CN2010101781147A CN201010178114A CN101882980A CN 101882980 A CN101882980 A CN 101882980A CN 2010101781147 A CN2010101781147 A CN 2010101781147A CN 201010178114 A CN201010178114 A CN 201010178114A CN 101882980 A CN101882980 A CN 101882980A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/0091—Signaling for the administration of the divided path
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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
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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
- H04L5/0001—Arrangements for dividing the transmission path
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Abstract
The invention provides a method and a system for indicating an uplink demodulation reference signal. The method comprises the following steps: a base station sends indication information to user equipment, wherein the indication information indicates at least one of the cyclic shift, the orthogonal cover code and the sequence hopping /sequence group hopping (SGH) mode of the demodulation reference signal; and the user equipment sends data and the demodulation reference signal to the base station according to the orthogonal cover code of the demodulation reference signal. The invention can indicate the parameters of the demodulation reference signal so as to meet the requirements of uplink multi-antenna port transmission.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of indicating means and system of uplink demodulation 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, adopt the mode of base station centralized dispatching to control subscriber equipment (User Equipment, abbreviate UE as) the transmission of Physical Uplink Shared Channel (Physical Uplink Shared Channel abbreviates PUSCH as).
Uplink scheduling information (Uplink Scheduling Information) to PUSCH sends to object UE by the base station by 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 DM RS as).
Physical Uplink Shared Channel adopts the single antenna port transmission in the LTE system.A system-frame (frame) comprises 10 subframes (subframe), and each subframe comprises 2 time slots (slot).Fig. 1 is the schematic diagram 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 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 subframe 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,
In a radio frames, n
s=0,1 ..., 19;
By the higher level parameters configuration,
Dispose by uplink scheduling information.n
PRS(n
s) generate by pseudo-random generator, specifically be expressed as
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: 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.
It is as shown in table 1 below that DCI format 0 indication is used for the cyclic shift of demodulated reference signal of the PUSCH that dispatched.
Table 1
| ??001 | ??6 |
| ??010 | ??3 |
| ??011 | ??4 |
| ??100 | ??2 |
| ??101 | ??8 |
| ??110 | ??10 |
| ??111 | ??9 |
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 schematic diagram 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.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 schematic diagram 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 (ChannelStatus 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 by 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 the received signal vector, 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 (DM RS) 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), by 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 subframe (Subframe) (Slot).
When using quadrature mask OCC to demodulated reference signal orthogonalization, joint-detection need be carried out to the demodulated reference signal on two time slots in the subframe in the base station, thereby to require subscriber equipment demodulated reference signal on two time slots in a subframe 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 subframe 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.
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), 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 may also comprise later release; Meet the system of respective standard version and system and the subscriber equipment that subscriber equipment is called the Rel-8 version, the system of Rel-9 version and subscriber equipment, and the system of Rel-10 version and subscriber equipment.And require forward compatibility and backward compatibility, for example, the subscriber equipment of Rel-10 version can be worked in the system of Rel-8/9 version, and the subscriber equipment of Rel-8/9 version can be worked in the system of Rel-10 version.
For demodulated reference signal, when requiring the subscriber equipment of Rel-10 version to be operated in the system of Rel-8/9 version, and the subscriber equipment of Rel-8/9 version can both correctly dispose the cyclic shift of demodulated reference signal according to the signaling among the DCI format 0 when being operated in the system of Rel-10 version
It should be noted that, present DCI format 0 does not support many antenna port transmission, under the scene of LTE-A uplink multi-antenna port transmission, use present DCI format 0 can not indicate the cyclic shift of the demodulated reference signal under many antenna ports transmitting scene.In addition, in the LTE-A system, subscriber equipment to the Rel-10 version, then needing by the signaling configuration is not only the cyclic shift of demodulated reference signal, also need to dispose quadrature mask, SGH mode etc., guarantee backward compatibility simultaneously to the subscriber equipment of Rel-8/9 version, and the subscriber equipment forward compatibility that guarantees the Rel-10 version.Therefore, present indicating means can't satisfy requirements of uplink multi-antenna port transmission.
Summary of the invention
Main purpose of the present invention is to provide a kind of indication scheme of uplink demodulation reference signal, one of to address the above problem at least.
According to an aspect of the present invention, a kind of indicating means of uplink demodulation reference signal is provided, this method comprises: the base station sends indication information to subscriber equipment, and described indication information is used for below the indication one of at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode; Described subscriber equipment sends data and demodulated reference signal according to the indication information that receives to described base station.
According to a further aspect in the invention, a kind of indication mechanism of uplink demodulation reference signal also is provided, comprise: base station and subscriber equipment, described base station is used for sending indication information to described subscriber equipment, and described indication information one of is used for below the indication at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode; Described subscriber equipment is used for sending data and demodulated reference signal according to the indication information that receives to described base station.
By the present invention, adopt the base station to send indication information to subscriber equipment, this indication information one of is used for below the indication at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode; Subscriber equipment carries out uplink according to the indication information that receives.Solved the indicating means in the correlation technique and can't satisfy the problem of requirements of uplink multi-antenna port transmission, and then can indicate, to satisfy requirements of uplink multi-antenna port transmission the parameter of demodulated reference signal.
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 schematic diagram according to the Cyclic Prefix in the time slot of correlation technique;
Fig. 2 is the schematic diagram 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 schematic diagram according to the precoding of the LTE-A system of correlation technique;
Fig. 4 is the flow chart according to the indicating means of the uplink demodulation reference signal of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Uplink scheduling in following examples can increase descending control information format newly, and for example, this descending control information format that increases newly can be called DCI format X; Perhaps also can on the basis of existing signaling type,, increase the function of signaling indication by the length of expanded signalling.
Fig. 4 is the flow chart according to the indicating means of the uplink demodulation reference signal of the embodiment of the invention, and this flow process comprises the steps:
Step S402, the base station sends indication information to subscriber equipment, wherein, this indication information is used for below the indication one of at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode;
Step S404, subscriber equipment send data and demodulated reference signal according to the indication information that receives to this base station.
By above-mentioned steps S402 and step S404, the indicated content of indication information can be selected according to the protocol version of subscriber equipment in the base station, thereby can support the transmission of many antenna ports.In addition, because there have been the protocol version of identification subscriber equipment and the ability that selection is indicated according to protocol version in the base station, therefore, can realize forward direction or backward compatibility with comparalive ease again.
Preferably, above-mentioned indication information is carried in the descending control information format, wherein, this descending control information format comprises the descending control information format of the Physical Uplink Shared Channel that is used to dispatch the single antenna port transmission and/or is used to dispatch the descending control information format of the Physical Uplink Shared Channel of many antenna ports transmission.
Preferably, only support to adopt under the situation of single antenna port transmission on the capable physically shared channel of subscriber equipment in the agreement of subscriber equipment, perhaps at the quadrature mask of the demodulated reference signal of base station configuration subscriber equipment under the situation about not enabling, this indication information is used to indicate the cyclic shift of demodulated reference signal.
Preferably, support to adopt under the situation of many antenna ports and/or single antenna port transmission on the capable physically shared channel of subscriber equipment in the agreement of subscriber equipment, this indication information is used to indicate the cyclic shift of demodulated reference signal, the quadrature mask and the SGH mode of demodulated reference signal.
Wherein, can dispose SGH by high-level signaling and whether enable, perhaps, perhaps unite by high-level signaling whether configuration SGH enables and the mode of SGH by the mode of high-level signaling configuration SGH.
Preferably, this indication information is the signaling of 3 bits (bit).
Below the agreement with the signaling of 3 bits and subscriber equipment support being divided into Rel-10 and later release and Release-8/9 thereof is that example describes.
The 3bits signaling of definition is used for the CS to the subscriber equipment joint instructions demodulated reference signal of Rel-10 and later release thereof, OCC and sequence/group hopping (SGH) mode; Also be used for CS to the subscriber equipment indication demodulated reference signal of Rel-8/9 version.
Preferably, the 3bits signaling packet is contained in the descending control information format (DCI format).This descending control information format sends to target UE by Physical Downlink Control Channel by the base station.
Preferably, the SGH mode comprises the SGH mode of time slot redirect (slot hopping) and subframe redirect (subframe hopping).Wherein, when described SGH mode was configured to the time slot redirect, the enabling of sequence redirect (Sequence hopping) and sequence set redirect (Grouphopping) disposed by high-level signaling; When described SGH mode was configured to the subframe redirect, enable and the redirect mode of subframe redirect were disposed by high-level signaling;
Preferably, the span of 3bits signaling be 000,001,010,011,100,101,110, the subclass of 111}.
Below the 3bits signaling being used for the Rel-8/9 version describes respectively with the indication demodulated reference signal that is used for Rel-10 and later release thereof.
(1) the 3bits signaling is used for indicating the CS of demodulated reference signal as shown in table 1 to the subscriber equipment of Rel-8/9 version:
Table 1
Preferably, this 3bits signaling can be included among the DCI format 0.
(2) this 3bits signaling is used for CS, OCC and the SGH mode to the demodulated reference signal of the subscriber equipment joint instructions of Rel-10 and later release thereof.Below configuration CS, OCC and SGH mode are described respectively.
Configuration CS:
When descending control information format regulation goal subscriber equipment sends the PUSCH of single antenna port transmission, this 3bits signaling indication
As shown in table 1, do not repeat them here.
When descending control information format regulation goal subscriber equipment sent the PUSCH of many antenna ports transmission, this 3bits was used to indicate the cyclic shift of the demodulated reference signal of a layer; Calculate the cyclic shift of the demodulated reference signal of other layers according to the cyclic shift of demodulated reference signal of the indicated layer of described 3bits signaling.Below this indication and Calculation Method are illustrated.
This 3bits signaling indication
Wherein,
Be the cyclic shift of the demodulated reference signal of d layer data, 0≤d≤υ-1.The cyclic shift of the demodulated reference signal of the 1st layer data then
For
Wherein, Δ
CSPoor for the interlayer cyclic shift of demodulated reference signal, or claim cyclic shift (cyclicshift offset).
Preferably, when descending control information format regulation goal subscriber equipment sends the PUSCH of many antenna port transmission, this 3bits signaling indication
Wherein,
It is the cyclic shift of the demodulated reference signal of the 0th layer data.The cyclic shift of the demodulated reference signal of the 1st layer data then
For
Wherein, the interlayer cyclic shift difference Δ of demodulated reference signal
CSBy the spatial reuse number of plies decision of PUSCH, following table 2 is illustrating this.
Table 2
| The spatial reuse number of plies υ of PUSCH | The interlayer cyclic shift difference Δ of demodulated reference signal CS |
| ?2 | 6 |
| ?3 | 4 |
| ?4 | 3 |
Configuration SGH mode:
When the value of this 3bits signaling belonged to proper subclass of its span, the SGH mode of indication demodulated reference signal was the time slot redirect; When the value of this 3bits signaling belonged to the supplementary set of above-mentioned proper subclass, the SGH mode of indication demodulated reference signal was the subframe redirect.
For example, if the span of this 3bits signaling be 000,001,010,011,100,101,110,111}, { 000,001,010, during 011}, the SGH mode of indication demodulated reference signal is the time slot redirect when the value of this 3bits signaling belongs to; { 100,101,110, during 111}, ((((the SGH mode of demodulated reference signal is the subframe redirect in indication when the value of this 3bits signaling belongs to.
If the span of this 3bits signaling be 000,001,010,011,100,101}, { 000,001, during 010}, the SGH mode of indication demodulated reference signal is the time slot redirect when the value of this 3bits signaling belongs to; { 011,100, during 101}, the SGH mode of indication demodulated reference signal is the subframe redirect when the value of this 3bits signaling belongs to.
Preferably, above-mentioned configuration mode only is used for when descending control information format regulation goal subscriber equipment sends the PUSCH of many antenna port transmission, and when descending control information format regulation goal subscriber equipment sends the PUSCH of single antenna port transmission, demodulated reference signal does not use the SGH mode of subframe redirect, and this 3bit signaling is not used in configuration SGH mode.
Configuration OCC:
Whether the base station enables by the quadrature mask of the demodulated reference signal of high-level signaling configure user equipment; If described base station does not have the quadrature mask of the demodulated reference signal of this subscriber equipment is configured, then the quadrature mask of the demodulated reference signal of this subscriber equipment is defaulted as and does not enable.
For example, subscriber equipment at first judges whether to receive OCC from the base station and enables/do not enable signaling, if do not receive signaling, then subscriber equipment does not use OCC to uplink demodulation reference signal; If receive signaling, then subscriber equipment continues to judge whether the OCC of this signaling indication enables, when the OCC of signaling indication does not enable, then subscriber equipment does not use OCC to uplink demodulation reference signal, when the OCC of signaling indication enabled, then subscriber equipment used OCC to uplink demodulation reference signal.
When the SGH mode of 3bits signaling indication demodulated reference signal was the subframe redirect: the demodulated reference signal of each layer data used identical OCC.
When the SGH mode of 3bits signaling indication demodulated reference signal is the time slot redirect:
When descending control information format regulation goal subscriber equipment sent the PUSCH of many antenna ports transmission of spatial reuse number of plies υ≤2, the demodulated reference signal of each layer data used identical OCC;
3bits signaling indication OCC; When descending control information format regulation goal subscriber equipment sent the PUSCH of many antenna ports transmission of spatial reuse number of plies υ＞2, the demodulated reference signal of each layer data used different OCC.
For example, send the PUSCH of many antenna port transmission of spatial reuse number of plies υ＞2 when descending control information format regulation goal subscriber equipment, and when the SGH mode of this 3bits signaling indication demodulated reference signal was the time slot redirect, the demodulated reference signal of each layer data used different OCC.
Again for example, send the PUSCH of many antenna port transmission of spatial reuse number of plies υ＞2 when descending control information format regulation goal subscriber equipment, and when the SGH mode of this 3bits signaling indication demodulated reference signal was the subframe redirect, the demodulated reference signal of each layer data used identical OCC.
Wherein, the OCC of the demodulated reference signal use of 3bits signaling and spatial reuse number of plies υ and layer sequence number 1 joint instructions respective layer data.
Preferably, when descending control information format regulation goal subscriber equipment sends the PUSCH of single antenna port transmission, and the agreement of subscriber equipment is when only supporting the single antenna port transmission, and demodulated reference signal does not use OCC, and this 3bit signaling is not used in configuration OCC.
Preferably, when descending control information format regulation goal subscriber equipment sends the PUSCH of single antenna port transmission, this demodulated reference signal uses OCC, during the PUSCH of the mode of this 3bit signaling configuration OCC and the many antenna ports transmission that send spatial reuse number of plies υ=1 when descending control information format regulation goal subscriber equipment, the mode that the 3bit signaling disposes OCC is identical.
Preferably, the descending control information format of the PUSCH of this regulation goal subscriber equipment transmission single antenna port transmission comprises DCI format 0.
In another embodiment, also provide a kind of indication mechanism of demodulated reference signal, having comprised: base station and subscriber equipment, wherein:
The base station is used for sending indication information to subscriber equipment, and indication information one of is used for below the indication at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode; Subscriber equipment is used for sending data and demodulated reference signal according to the indication information that receives to the base station.
Preferably, the base station also is used for indication information is carried on descending control information format, wherein, descending control information format comprises the descending control information format of the Physical Uplink Shared Channel that is used to dispatch the single antenna port transmission and/or is used to dispatch the descending control information format of the Physical Uplink Shared Channel of many antenna ports transmission.
Variant embodiment to above-mentioned each embodiment describes below.
Subscriber equipment to Rel-10 and later release thereof: when described descending control information format is dispatched the PUSCH that described target UE sends the single antenna port transmission, or when sending the PUSCH of many antenna ports transmission of spatial reuse number of plies υ=1, the 3bits signaling is as shown in table 3:
Table 3
| ??000 | ??0 | ??[1，1] | The time slot redirect |
| ??001 | ??6 | ??[1，1] | The time slot redirect |
| ??010 | ??3 | ??[1，1] | The time slot redirect |
| ??011 | ??4 | ??[1，-1] | The subframe redirect |
| ??100 | ??2 | ??[1，1] | The subframe redirect |
| ??101 | ??8 | ??[1，1] | The subframe redirect |
| ??110 | ??10 | ??[1，-1] | The subframe redirect |
| ??111 | ??9 | ??[1，1] | The time slot redirect |
Perhaps, as shown in table 4:
Table 4
Perhaps, as shown in table 5:
Table 5
| ??100 | ??2 | ??[1，1] | |
| ??101 | ??8 | ??[1，-1] | |
| ??110 | ??10 | ??[1，-1] | |
| ??111 | ??9 | ??[1，-1] |
Wherein, for the SGH mode of table 5, in 8 kinds of states of 3bits denoting signaling, it is the time slot redirect that the SGH mode of n kind state is arranged, and the SGH mode that 8-n kind state is arranged is the subframe redirect, and n is a certain integer between 1 to 7.
Perhaps, as shown in table 6:
Table 6
Wherein, for the SGH mode of table 6, in 8 kinds of states of 3bits denoting signaling, it is the time slot redirect that the SGH mode of n kind state is arranged, and the SGH mode that 8-n kind state is arranged is the subframe redirect, and n is a certain integer between 1 to 7.
Perhaps, as shown in table 7:
Table 7
| ??010 | ??3 | ??[1，-1] | |
| ??011 | ??4 | ??[1，-1] | |
| ??100 | ??2 | ??[1，1] | |
| ??101 | ??8 | ??[1，1] | |
| ??110 | ??10 | ??[1，-1] | |
| ??111 | ??9 | ??[1，-1] |
Wherein, for the SGH mode of table 7, in 8 kinds of states of 3bits denoting signaling, it is the time slot redirect that the SGH mode of n kind state is arranged, and the SGH mode that 8-n kind state is arranged is the subframe redirect, and n is a certain integer between 1 to 7.
Perhaps, as shown in table 8:
Table 8
Wherein, for the SGH mode of table 8, in 8 kinds of states of 3bits denoting signaling, it is the time slot redirect that the SGH mode of n kind state is arranged, and the SGH mode that 8-n kind state is arranged is the subframe redirect, and n is a certain integer between 1 to 7.
When descending control information format regulation goal subscriber equipment sends the PUSCH of many antenna ports transmission of spatial reuse number of plies υ=2, interlayer cyclic shift difference Δ
CS=6, the 3bits signaling is as shown in table 9:
Table 9
Perhaps, as shown in table 10:
Table 10
When descending control information format transfers target UE to send the PUSCH of many antenna ports transmission of spatial reuse number of plies υ=3, interlayer cyclic shift difference Δ
CS=4, the 3bits signaling is as shown in table 11:
Table 11
When descending control information format regulation goal subscriber equipment sends the PUSCH of many antenna ports transmission of spatial reuse number of plies υ=4, interlayer cyclic shift difference Δ
CS=3, the 3bits signaling is as shown in table 12:
Table 12
In sum, pass through the above embodiment of the present invention, solved the indicating means in the correlation technique and can't satisfy the problem of requirements of uplink multi-antenna port transmission, and then can indicate, to satisfy requirements of uplink multi-antenna port transmission the parameter of demodulated reference signal.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, 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, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, 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 the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, 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 indicating means of a uplink demodulation reference signal is characterized in that, comprising:
The base station sends indication information to subscriber equipment, and described indication information is used for below the indication one of at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode;
Described subscriber equipment sends data and demodulated reference signal according to the indication information that receives to described base station.
2. method according to claim 1, it is characterized in that, described indication information is carried in the descending control information format, wherein, described descending control information format comprises the descending control information format of the Physical Uplink Shared Channel that is used to dispatch the single antenna port transmission and/or is used to dispatch the descending control information format of the Physical Uplink Shared Channel of many antenna ports transmission.
3. method according to claim 1 is characterized in that, whether described base station disposes the demodulated reference signal of described subscriber equipment by high-level signaling quadrature mask enables; If described base station is not configured the quadrature mask of the demodulated reference signal of described subscriber equipment, then the quadrature mask of the demodulated reference signal of described subscriber equipment is defaulted as and does not enable.
4. method according to claim 1, it is characterized in that, only support to adopt under the situation of single antenna port transmission on the capable physically shared channel of described subscriber equipment in the agreement of described subscriber equipment, perhaps at the quadrature mask of the demodulated reference signal of the described subscriber equipment of described base station configuration under the situation about not enabling, described indication information is used to indicate the cyclic shift of demodulated reference signal.
5. method according to claim 1, it is characterized in that, support to adopt under the situation of many antenna ports and/or single antenna port transmission on the capable physically shared channel of described subscriber equipment in the agreement of described subscriber equipment, described indication information is used to indicate the cyclic shift of demodulated reference signal and the quadrature mask and/or the SGH mode of demodulated reference signal.
6. according to claim 4 or 5 described methods, it is characterized in that the descending control information format at described indication information place comprises: descending control information format DCI format0.
7. method according to claim 5 is characterized in that,
Described indication information is used to indicate the cyclic shift of demodulated reference signal to comprise: described indication information is used to indicate the cyclic shift of the demodulated reference signal of a layer;
Calculate the cyclic shift of the demodulated reference signal of other layers according to the cyclic shift of demodulated reference signal of the indicated layer of described indication information.
8. method according to claim 5 is characterized in that, described indication information is used to indicate the quadrature mask to comprise:
Be used to dispatch described subscriber equipment at the descending control information format at described indication information place and send the spatial reuse number of plies and be less than or equal under two the situation, described indication information indicates the demodulated reference signal of each layer to use identical quadrature mask.
9. method according to claim 5 is characterized in that, described indication information is used to indicate the quadrature mask to comprise:
The descending control information format at described indication information place be used to dispatch described subscriber equipment send the spatial reuse number of plies greater than two situation under, and, when the SGH mode of described indication information indication was the subframe redirect, described indication information indicated the demodulated reference signal of each layer to use identical quadrature mask.
10. according to claim 4 or 5 described methods, it is characterized in that, being used to dispatch described subscriber equipment at the descending control information format at described indication information place, to send the spatial reuse number of plies be that the scope of the cyclic shift value of the demodulated reference signal of described indication information indication is: 0,2,3,4,6,8,9,10 under one the situation.
11., it is characterized in that it is one of following that described SGH mode comprises: time slot redirect, subframe redirect according to each described method in the claim 1 to 5.
12. whether method according to claim 11 is characterized in that, dispose described SGH by high-level signaling and enable, and perhaps by the mode of high-level signaling configuration SGH, perhaps unites by high-level signaling whether configuration SGH enables and the mode of SGH.
13., it is characterized in that described indication information is the signaling of 3 bits according to each described method in the claim 1 to 5.
14. method according to claim 13 is characterized in that, in the represented 8 kinds of states of the signaling of described 3 bits, the SGH mode that n kind state is arranged is the time slot redirect, the SGH mode that 8-n kind state is arranged is the subframe redirect, and wherein, n is an integer between 1 to 7.
15. the indication mechanism of a uplink demodulation reference signal comprises: base station and subscriber equipment is characterized in that:
Described base station is used for sending indication information to described subscriber equipment, and described indication information one of is used for below the indication at least: the sequence redirect of the quadrature mask of the cyclic shift of demodulated reference signal, demodulated reference signal, demodulated reference signal/sequence set redirect SGH mode;
Described subscriber equipment is used for sending data and demodulated reference signal according to the indication information that receives to described base station.
16. system according to claim 15, it is characterized in that, described base station also is used for described indication information is carried on descending control information format, wherein, described descending control information format comprises the descending control information format of the Physical Uplink Shared Channel that is used to dispatch the single antenna port transmission and/or is used to dispatch the descending control information format of the Physical Uplink Shared Channel of many antenna ports transmission.
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| CN201010178114.7A CN101882980B (en) | 2010-05-06 | 2010-05-06 | Method and system for indicating uplink demodulation reference signal |
| PCT/CN2010/077165 WO2011137620A1 (en) | 2010-05-06 | 2010-09-20 | Indication method and system for uplink demodulation reference signals |
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| CN201010178114.7A CN101882980B (en) | 2010-05-06 | 2010-05-06 | Method and system for indicating uplink demodulation reference signal |
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