CN106330789B - A kind of PMCH transmission method and device based on multi-user's superposed transmission - Google Patents
A kind of PMCH transmission method and device based on multi-user's superposed transmission Download PDFInfo
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Abstract
The invention discloses a kind of PMCH transmission methods and device based on multi-user's superposed transmission.UE the second reference signal and second information in step 1, receive the first reference signal and the first information in step 2.Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are overlapped in whole or in part, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal be it is orthogonal, the second information occupy running time-frequency resource and the second reference signal occupy running time-frequency resource be orthogonal.The occupied running time-frequency resource of first reference signal is occupied by the second reference signal.Second reference signal is MBSFN RS.The present invention reduces the interference between reference signal associated by the first information and the second information, is not take up additional RE, improves efficiency of transmission.
Description
Technical field
The present invention relates to the transmission plans of the multi-casting communication in wireless communication system, more particularly to for MUST (Multi
User Superposition Transmission, multi-user's superposed transmission) multicast transmission method and device.
Background technique
Traditional 3GPP (3rd Generation Partner Project, third generation cooperative partner program) cellular system
In, the downstream wireless signals of multi-user are by { TDM (Time Division Multiplexing, time division multiplexing), FDM
(Frequency Division Multiplexing, frequency division multiplexing), CDM (Code Division Multiplexing, code
Point multiplexing) } one or more of mode realize.A new research is introduced in 3GPP R (Release, version) 13
Project (RP-150496)-downlink MUST utilizes the downstream wireless signals for two users of different instructions for sending power.It is described
Two users generally include nearly user's (i.e. close apart from base station) and remote user's (i.e. remote apart from base station), base station be for
The first signal of nearly user distributes lower transmission power, while to distribute higher transmission function for the second signal of remote user
Rate.Remote user directly demodulates second signal (the first signal is worked as noise processed), and nearly user demodulates second signal first and (examines
It is very high a possibility that user has lower path loss, successfully decoded farther out to consider nearly user), then from reception signal
Except the interference of second signal obtains residual signal, residual signal is decoded and obtains the first signal, here it is SIC (Successive
Interference Cancellation, successive interference cancellation) algorithm.In order to execute SIC, nearly user needs to obtain the first letter
Number and second signal scheduling information-and remote user only needs to obtain the scheduling information of second signal.
It should be noted that the specific implementation of above-mentioned SIC algorithm is by UE (User Equipment, user equipment) factory
Quotient voluntarily determines.And perhaps the nearly UE of additional project (or remote UE) can use IRC to the substitution as a kind of SIC
(Interference Rejection Combining, AF panel merge) algorithm carries out albefaction behaviour to the wireless signal of superposition
Make, to improve receptivity.IRC algorithm does not require UE correct decoding to interfere wireless signal, it is only necessary to estimation interference wireless signal
Channel parameter.
Two kinds of physics for being used for transmission data are defined in traditional LTE (Long Term Evolution, long term evolution)
Layer channel, i.e. PDSCH (Physical Downlink Shared Channel, Physical Downlink Control Channel) PMCH
(Physical Multicast Channel, Physical Multicast Channel).The former is mainly used for the transmission of mode of unicast, and the latter is main
Transmission for multicast.The transmission channel of PMCH mapping is MCH (Multicast Channel, Multicast Channel).In 3GPP
In RAN1#81 meeting, some companies propose for MUST to be applied between two PMCH being overlapped mutually.
Summary of the invention
Inventors discovered through research that when MUST is applied to the first PMCH and two PMCH, a typical applied field
(Multicast Broadcast Single Frequency Network, multicast are wide by the corresponding MBSFN of Jing Shi: the one PMCH
Broadcast single frequency network) region (Area) larger-sent by more cell, and the 2nd PMCH is sent by less cell.Inventor
By research it has furthermore been found that if the channel estimation of the first PMCH and the 2nd PMCH is based on identical MBSFN RS
(Reference Signal, reference signal)-is sent by the more cell.One potential problem is, the 2nd PMCH's
The channel parameter of 2nd PMCH wireless channel experienced of target UE estimation may have large error.
In view of the above-mentioned problems, the present invention provides solutions.It should be noted that in the absence of conflict, this Shen
The feature in the embodiment and embodiment in UE please can be applied in base station, and vice versa.Further, do not conflicting
In the case of, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
The invention discloses a kind of methods in UE for supporting multi-user to be superimposed, wherein includes the following steps:
Step A. receives the second reference signal and the second information
Step B. receives the first reference signal and the first information.
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are all or part of
Overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are orthogonal, the second letters
It is orthogonal for ceasing the running time-frequency resource of the running time-frequency resource occupied and the second reference signal occupancy.The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal.Second reference signal is MBSFN RS.
As one embodiment, the UE determines the letter of the second information wireless channel experienced according to the second reference signal
Road parameter.As one embodiment, the first reference signal is the reference signal except MBSFN.As one embodiment, the second letter
Breath transmits on PMCH.As one embodiment, the first information transmits on PMCH.It is described orthogonal to be as one embodiment
Refer to and is not overlapped.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B1. determines the channel parameter of first information wireless channel experienced according to the first reference signal.
Wherein, the occupied RE of the first reference signal (Resource Element, resource particle) is divided into positive integer
A RE group.In each RE group, the modulation symbol sequence of the modulation symbol sequence of the first reference signal and the second reference signal is
Orthogonal, the RE group includes L RE, and the modulation symbol sequence includes L modulation symbol, the L modulation symbol difference
It is mapped in the L RE, the L is positive integer.
The above method ensures the orthogonality of the first reference signal and the second reference signal in each RE group, avoids second
Interference of the reference signal to the first reference signal.In addition, it is contemplated that the transmission number of cells of the first reference signal is less (i.e. maximum
Multipath delay is smaller), the performance of channel estimation can't be substantially reduced using RE group as the smallest particles degree of channel estimation.
As one embodiment, the transmission antenna port of the first information and the transmission antenna port phase of the first reference signal
Together, all transmission cells of the first information and all transmission cells of the first reference signal are identical.As one embodiment, first
The occupied RE of reference signal and the occupied RE of the second reference signal are all overlapped.As one embodiment, in the first reference
Each PRB (Physical Resource Element, Physical Resource Block) that signal occupies is in (Pair), and first with reference to letter
Number occupied RE and occupied RE of the second reference signal is identical.It is described as one embodiment of the step A1
UE is based on the first reference signal and executes channel estimating operation, obtains the channel parameter.As one embodiment, the L is 2.
As one embodiment, the RE group is by being located at an OFDM (Orthogonal Frequency Division
Multiplexing, orthogonal frequency division multiplexing) adjacent L RE composition on symbol.As one embodiment, the channel parameter
It is channel impulse response.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B2. determines the channel parameter of first information wireless channel experienced according to the first reference signal.
Wherein, the first reference signal occupies a part in available RE in a PRB pair, described to be with RE
All RE that MBSFN RS is occupied in one PRB pair.
(the first reference signal and the second reference signal) this completely overlapped intuitive design scheme is compared, above-mentioned side
Face alleviates interference of first reference signal to the second reference signal.The density of RE occupied by first reference signal is less than the second ginseng
Examine the density of signal (i.e. MBSFN RS) occupied RE.It is above-mentioned in view of the transmission number of cells of the first reference signal is less
Aspect can't be substantially reduced the channel estimating performance based on the first reference signal.
As one embodiment, in step B2, the UE is first from the occupied running time-frequency resource of the first reference signal
On the interference of the second reference signal is eliminated in the wireless signal that receives, then execute channel estimation using the first wireless signal and grasp
Make.As one embodiment, pattern of first reference signal in each occupied PRB pair is identical.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B3. determines first information wireless channel experienced according to the first reference signal and the second reference signal
Channel parameter.
Wherein, the first reference signal is CRS (Cell specific Reference Signal, cell specific reference letter
Number), the first information and the second reference signal are sent by identical antenna port.
As one embodiment, the first reference signal and the first information by and only sent by the same serving cell.Make
For one embodiment, in the step B3, the UE determines first information wireless channel experienced according to the first reference signal
Statistical property, then according to the statistical property to the second reference signal execute channel estimation determine that the first information is experienced
The channel parameter of wireless channel.The statistical property includes at least one of { maximum Doppler frequency offset, maximum multipath delay }.
The essence of above-mentioned aspect is that UE sends small according to (being likely to one) that the first reference signal obtains the first information
The channel statistic in area sends the superposition of cell according to (being likely to multiple) that the second reference signal obtains the second information
The channel parameter of channel recovers the hair of the first information using the statistical property from the channel parameter of the channel of the superposition
Send the channel parameter of cell.Above-mentioned aspect estimates the first information and the identical MBSFN RS of the second information sharing for channel
Meter, avoids interference of first reference signal to the second reference signal, while ensure that the channel based on the first reference signal is estimated
The performance of meter.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. receives the first signaling, and the first signaling indicates the transmission function for carrying the physical layer channel of the first information
The relationship of the transmission power of rate and the first reference signal.
As one embodiment, the first signaling is RRC (Radio Resource Control, wireless heterogeneous networks) layer letter
It enables.As one embodiment, the RE that the RE mapping mode for carrying the physical layer channel of the first information reuses PMCH reflects
Penetrate mode.As one embodiment, the ratio is less than 0dB.As one embodiment, the ratio is not equal to 0dB.As one
A embodiment, the first signaling indicate EPRE (the Energy Per Resource for carrying the physical layer channel of the first information
Element, every resource units energy) and the first reference signal EPRE ratio.As one embodiment, the instruction of the first signaling
Difference between the EPRE of the first information and the EPRE of the first reference signal.As one embodiment, the transmission power is line
Shape value, the relationship are ratio.As one embodiment, the transmission power is dB or dBm, and the relationship is difference.
As one embodiment, the first reference signal is CRS, the first reference signal.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. receives the second signaling, and the second signaling indicates the first ID (Identifier, identifier).
Wherein, initialization of the first ID for the generator of the RS sequence of the first reference signal, the first ID is nonnegative integer,
First ID is that cell is specific.
As one embodiment, the first ID is that cell is specific, i.e. the first ID is for single subdistrict (rather than MBSFN
Region) by separate configurations.As one embodiment, the first ID is the cell physics ID of the transmission cell of the first information.As
One embodiment, the first ID are the nonnegative integers different from the 2nd ID, and the 2nd ID is by high-level signaling configuration for the second ginseng
Examine the nonnegative integer of the initialization of the generator of the RS sequence of signal.As one embodiment, the RS sequence of the first reference signal
It is pseudo-random sequence.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. receives third signaling, and third signaling indicates the transmission function for carrying the physical layer channel of the first information
The relationship of the transmission power of rate and the second reference signal.
The invention discloses a kind of methods in base station for supporting multi-user's superposed transmission, wherein includes the following steps:
Step A. sends the second reference signal and the second information
Step B. sends the first reference signal and the first information.
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are all or part of
Overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are orthogonal, the second letters
It is orthogonal for ceasing the running time-frequency resource of the running time-frequency resource occupied and the second reference signal occupancy.The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal.Second reference signal is MBSFN RS.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B1. sends the first reference signal and the first information using identical antenna port.
Wherein, the occupied RE of the first reference signal is divided into positive integer RE group.In each RE group, the first reference
The modulation symbol sequence of signal and the modulation symbol sequence of the second reference signal be it is orthogonal, the RE group include L RE, it is described
Modulation symbol sequence includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is just whole
Number.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B2. sends the first reference signal and the first information using identical antenna port.
Wherein, the first reference signal occupies a part in available RE in a PRB pair, described to be with RE
All RE that MBSFN RS is occupied in one PRB pair.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B3. sends the second reference signal and the first information using identical antenna port.
Wherein, the first reference signal is CRS.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. sends the first signaling, and the first signaling indicates the transmission function for carrying the physical layer channel of the first information
The relationship of the transmission power of rate and the first reference signal.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. sends the second signaling, and the second signaling indicates the first ID.
Wherein, initialization of the first ID for the generator of the RS sequence of the first reference signal, the first ID is nonnegative integer,
First ID is that cell is specific.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. sends third signaling, and third signaling indicates the transmission function for carrying the physical layer channel of the first information
The relationship of the transmission power of rate and the second reference signal.
The invention discloses a kind of user equipmenies for supporting multi-user's superposed transmission, wherein including following module:
First module: for receiving the second reference signal and the second information
Second module: for receiving the first reference signal and the first information.According to { the first reference signal, second with reference to letter
Number } at least the first reference signal determine the channel parameter of first information wireless channel experienced.
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are all or part of
Overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are orthogonal, the second letters
It is orthogonal for ceasing the running time-frequency resource of the running time-frequency resource occupied and the second reference signal occupancy.The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal.Second reference signal is MBSFN RS.First reference signal is following one:
The occupied RE of the first reference signal of-is divided into positive integer RE group.In each RE group, first with reference to letter
Number modulation symbol sequence and the second reference signal modulation symbol sequence be it is orthogonal, the RE group include L RE, the tune
Symbol sebolic addressing processed includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer；
The first reference signal of-occupies a part in available RE in a PRB pair, and described can be MBSFN with RE
All RE that RS is occupied in one PRB pair；
-.CRS。
The invention discloses a kind of base station equipments for supporting multi-user's superposed transmission, wherein including following module:
First module: for sending the second reference signal and the second information
Second module: for sending the first reference signal and the first information.
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are all or part of
Overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are orthogonal, the second letters
It is orthogonal for ceasing the running time-frequency resource of the running time-frequency resource occupied and the second reference signal occupancy.The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal.Second reference signal is MBSFN RS.First reference signal is following one:
The occupied RE of the first reference signal of-is divided into positive integer RE group.In each RE group, first with reference to letter
Number modulation symbol sequence and the second reference signal modulation symbol sequence be it is orthogonal, the RE group include L RE, the tune
Symbol sebolic addressing processed includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer；
The first reference signal of-occupies a part in available RE in a PRB pair, and described can be MBSFN with RE
All RE that RS is occupied in one PRB pair；
-.CRS。
Compared to existing public technology, the present invention has following technical advantage:
- reduces the interference between reference signal associated by the first information and the second information
(unobvious) performance for reducing the channel estimation for the first information of-
Reference signal associated by the-first information and the second information reuses the occupied RE of MBSFN RS, is not take up additional
RE, improve efficiency of transmission.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart of downlink transfer according to an embodiment of the invention；
Fig. 2 shows the first reference signals according to an embodiment of the invention and the second reference signal to be maintained at RE group
Interior orthogonal schematic diagram；
Fig. 3 shows the schematic diagram that the first reference signal according to an embodiment of the invention is CRS；
Fig. 4 shows the first reference signal according to an embodiment of the invention and occupies showing for part MBSFN RS resource
It is intended to；
Fig. 5 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
Fig. 6 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart of downlink transfer, as shown in Fig. 1.In attached drawing 1, base station N2 is the service of UE U1
The maintenance base station of cell, N3 (i.e. other base stations) indicates one or more base station except the N2 of base station, wherein in box F1
Step is optional step.
ForUE U1, the first signaling is received in step slo；The second information and second is received in step s 11 with reference to letter
Number, the channel parameter of the second information wireless channel experienced is determined according to the second reference signal；First is received in step s 12
Information and the first reference signal determine according at least the first reference signal in { the first reference signal, the second reference signal }
The channel parameter of one information wireless channel experienced.
ForBase station N2, the first signaling is sent in step S20；It is sent in the step s 21 using identical antenna port
Second information and the second reference signal；The first information and the first reference signal are sent in step S22.
ForN3, the second information and the second reference signal are sent using identical antenna port in step S31.
In embodiment 1, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information be all or
Person is partly overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal be it is orthogonal,
The running time-frequency resource that the running time-frequency resource and the second reference signal that second information occupies occupy is orthogonal.Occupied by first reference signal
Running time-frequency resource occupied by the second reference signal.Second reference signal is MBSFN RS.The instruction of first signaling is for carrying the
The relationship of the transmission power for sending power and the first reference signal of the physical layer channel of one information.
As the sub- embodiment 1 of embodiment 1, the first information transmits on the first PMCH, and the second information is on the 2nd PMCH
Transmission.First signaling indicates the ratio of the EPRE of the first PMCH and the EPRE of the first reference signal.
Embodiment 2
Embodiment 2 illustrates the first reference signal and the second reference signal is maintained at schematic diagram orthogonal in RE group, such as attached
Shown in Fig. 2.Attached drawing 2 illustrates the resource allocation inside a PRB pair, and the blank lattice of thin frame is allocated to the first information
With the RE of the second information, the blank lattice of thick frame is allocated to PDCCH (Physical Downlink Control
Channel, Physical Downlink Control Channel) RE, oblique line filling lattice be the first reference signal and the second reference signal institute
The RE of occupancy, the lattice of cross spider filling are the RE that CRS is occupied.
In embodiment 2, the first reference signal is distributed on multiple PRB pairs, wherein on each PRB pair, the first reference
Signal and the occupied RE of the second reference signal are completely coincident.In each PRB pair, the first reference signal is occupied
RE is divided into 6 RE groups.In each RE group, the modulation of the modulation symbol sequence of the first reference signal and the second reference signal
Symbol sebolic addressing be it is orthogonal, the RE group include 3 RE, the modulation symbol sequence include 3 modulation symbols, it is described 3 tune
Symbol processed is mapped in respectively in 3 RE.In attached drawing 2,3 RE for identifying same numbers belong to the same RE group.
As the sub- embodiment 1 of embodiment 2, the second reference signal is respectively as follows: in three modulation symbols of given RE groupFirst reference signal is respectively as follows: in corresponding three modulation symbols of the given RE groupWherein θ1, θ2, θ3Respectively greater than-π and be less than or equal to π.
Embodiment 3
Embodiment 3 illustrates the schematic diagram that the first reference signal is CRS, as shown in Fig. 3.Attached drawing 3 illustrates a PRB
To internal resource allocation, the blank lattice of thin frame is allocated to the RE of the first information and the second information, the sky of thick frame
White lattice is allocated to the RE of PDCCH, and the lattice of oblique line filling is the occupied RE of the second reference signal, backslash filling
Lattice be the port CRS 0 occupy RE, cross spider filling lattice be the end CRS the first reference signal occupied RE-i.e.
Mouth 1.
In embodiment 3, the target UE of the first information determines the first information according to the first reference signal and the second reference signal
The channel parameter of wireless channel experienced.The transmission cell of the first information using identical antenna port send the first information and
Second reference signal.First reference signal is as transmitted by the transmission cell of the first information.
As the sub- embodiment 1 of embodiment 3, above-mentioned target UE determines that the first information is experienced according to the first reference signal
The maximum multipath of wireless channel is delayed, and then executes channel estimation to the second reference signal and obtains the channel impulse response of time domain,
From the tap intercepted in the channel impulse response of the time domain in the maximum multipath delay as first information nothing experienced
The channel parameter of line channel.
As the sub- embodiment 2 of embodiment 3, the transmission cell of the first information sends third signaling to the target of the first information
UE.The transmission power of the transmission power and the second reference signal of physical layer channel of the third signaling instruction for carrying the first information
Relationship.
Embodiment 4
Embodiment 4 illustrates the schematic diagram that the first reference signal occupies part MBSFN RS resource, as shown in Fig. 4.
Attached drawing 4 illustrates the resource allocation inside a PRB pair, and the blank lattice of thin frame is allocated to the first information
It is allocated to the RE of PDCCH with the lattice of the RE of the second information, cross spider filling, the blank lattice of thick frame is the first ginseng
The RE of signal occupancy is examined, the lattice of oblique line filling is the occupied RE of the second reference signal, and the lattice of backslash filling is
The RE that CRS is occupied.
In embodiment 4, the target UE of the first information determines first information wireless communication experienced according to the first reference signal
The channel parameter in road.The transmission cell of the first information sends the first information and the first reference signal using identical antenna port.
As the sub- embodiment 1 of embodiment 4, the transmission cell of the first information sends the second signaling, the second signaling instruction the
One ID.Wherein, initialization of the first ID for the generator of the RS sequence of the first reference signal, the first ID is nonnegative integer, the
One ID is that cell is specific.The RS sequence of first reference signal is pseudo-random sequence.
As a sub- embodiment of the first ID, the first ID is the cell physics ID of the transmission cell of the first information, first
Information is only as transmitted by a serving cell.
Embodiment 5
Embodiment 5 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 5.In attached drawing 5, UE processing
Device 200 is mainly made of receiving module 201 and receiving module 202.
Receiving module 201 is for receiving the second reference signal and the second information.Receiving module 202 is for receiving the first reference
Signal and the first information.The first letter is determined according at least the first reference signal in { the first reference signal, the second reference signal }
Cease the channel parameter of wireless channel experienced.
In embodiment 5, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information be all or
Person is partly overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal be it is orthogonal,
The running time-frequency resource that the running time-frequency resource and the second reference signal that second information occupies occupy is orthogonal.Occupied by first reference signal
Running time-frequency resource occupied by the second reference signal.Second reference signal is MBSFN RS.
As the sub- embodiment 1 of embodiment 5, receiving module 202 is also used to determine the first information according to the first reference signal
The channel parameter of wireless channel experienced.The occupied RE of first reference signal is divided into positive integer RE group.Each
In RE group, the modulation symbol sequence of the modulation symbol sequence of the first reference signal and the second reference signal is orthogonal, the RE
Group includes L RE, and the modulation symbol sequence includes L modulation symbol, and the L modulation symbol is mapped in the L respectively
In RE, the L is positive integer.
One sub- embodiment of the sub- embodiment 1 as embodiment 5, receiving module 202 calculate first with the following method
The channel parameter of information wireless channel experienced:
The wireless signal received on each (the first reference signal the is occupied) RE of- is corresponding multiplied by the first reference signal
The conjugation of modulation symbol obtains aiming symbol, the available reference that the aiming symbol in each described RE group is added
Signal executes channel estimation for the available reference signal and obtains above-mentioned channel parameter.
Aforesaid operations eliminate most second reference signal (if not all) in the available reference signal
Interference.
As the sub- embodiment 2 of embodiment 5, receiving module 202 is also used to determine the first information according to the first reference signal
The channel parameter of wireless channel experienced.First reference signal occupies a part in available RE, institute in a PRB pair
Stating available RE is all RE that MBSFN RS is occupied in one PRB pair.
As the sub- embodiment 3 of embodiment 5, receiving module 202 is also used to according to the first reference signal and second with reference to letter
Number determine first information wireless channel experienced channel parameter.Wherein, the first reference signal is CRS, the first information and
Two reference signals are sent by identical antenna port.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 6.In attached drawing 6, base station
Processing unit 300 is mainly made of sending module 301 and sending module 302.
Sending module 301 is for sending the second reference signal and the second information.Sending module 302 is for sending the first reference
Signal and the first information.
In embodiment 6, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information be all or
Person is partly overlapping, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal be it is orthogonal,
The running time-frequency resource that the running time-frequency resource and the second reference signal that second information occupies occupy is orthogonal.Occupied by first reference signal
Running time-frequency resource occupied by the second reference signal.Second reference signal is MBSFN RS.First reference signal is following one:
The occupied RE of the first reference signal of-is divided into positive integer RE group.In each RE group, first with reference to letter
Number modulation symbol sequence and the second reference signal modulation symbol sequence be it is orthogonal, the RE group include L RE, the tune
Symbol sebolic addressing processed includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer；
The first reference signal of-occupies a part in available RE in a PRB pair, and described can be MBSFN with RE
All RE that RS is occupied in one PRB pair；
-.CRS。
As the sub- embodiment 1 of embodiment 6, the first information and the second information are transmitted on PMCH respectively.
As the sub- embodiment 2 of embodiment 6, the first information occupies a part of whole system bandwidth, and the second information accounts for
With whole system bandwidth.
As the sub- embodiment 3 of embodiment 6, in addition to base station belonging to processing unit 300, there are also other base stations also to send
Two information and the second reference signal.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE in the present invention includes but is not limited to mobile phone,
Tablet computer, notebook, the wireless telecom equipments such as card of surfing Internet.Base station in the present invention includes but is not limited to macrocell base stations, micro-
Cellular base station, Home eNodeB, the wireless telecom equipments such as relay base station.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (16)
1. a kind of method in UE for supporting multi-user's superposed transmission, wherein include the following steps:
Step A. receives the second reference signal and the second information；
Step B. receives the first reference signal and the first information；
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are to be overlapped in whole or in part
, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are nonoverlapping, the second information
The running time-frequency resource that the running time-frequency resource of occupancy and the second reference signal occupy is nonoverlapping；The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal；Second reference signal is MBSFN RS；The first information transmits on PMCH, the second information
It is transmitted on PMCH；First reference signal is used for determining the channel parameter of first information wireless channel experienced；Second ginseng
Examine the channel parameter that signal is used for determining the second information wireless channel experienced.
2. the method according to claim 1, wherein the step B further includes following steps:
Step B1. determines the channel parameter of first information wireless channel experienced according to the first reference signal；
Wherein, the occupied RE of the first reference signal is divided into positive integer RE group；In each RE group, the first reference signal
Modulation symbol sequence and the second reference signal modulation symbol sequence be it is orthogonal, the RE group include L RE, the modulation
Symbol sebolic addressing includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer.
3. the method according to claim 1, wherein the step B further includes following steps:
Step B2. determines the channel parameter of first information wireless channel experienced according to the first reference signal；
Wherein, the first reference signal occupies a part in available RE in a PRB pair, and described can be MBSFN RS with RE
All RE occupied in one PRB pair.
4. the method according to claim 1, wherein the step B further includes following steps:
Step B3. determines the channel of first information wireless channel experienced according to the first reference signal and the second reference signal
Parameter；
Wherein, the first reference signal is CRS, and the first information and the second reference signal are sent by identical antenna port.
5. according to the method in claim 2 or 3, which is characterized in that the step A further includes following steps:
Step A0. receive the first signaling, the first signaling instruction for carry the first information physical layer channel transmission power and
The relationship of the transmission power of first reference signal.
6. according to the method in claim 2 or 3, which is characterized in that the step A further includes following steps:
Step A1. receives the second signaling, and the second signaling indicates the first ID；
Wherein, initialization of the first ID for the generator of the RS sequence of the first reference signal, the first ID is nonnegative integer, first
ID is that cell is specific.
7. according to the method described in claim 4, it is characterized in that, the step A further includes following steps:
Step A2. receive third signaling, third signaling instruction for carry the first information physical layer channel transmission power and
The relationship of the transmission power of second reference signal.
8. a kind of method in base station for supporting multi-user's superposed transmission, wherein include the following steps:
Step A. sends the second reference signal and the second information；
Step B. sends the first reference signal and the first information；
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are to be overlapped in whole or in part
, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are nonoverlapping, the second information
The running time-frequency resource that the running time-frequency resource of occupancy and the second reference signal occupy is nonoverlapping；The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal；Second reference signal is MBSFN RS；The first information transmits on PMCH, the second information
It is transmitted on PMCH；First reference signal is used for determining the channel parameter of first information wireless channel experienced；Second ginseng
Examine the channel parameter that signal is used for determining the second information wireless channel experienced.
9. according to the method described in claim 8, it is characterized in that, the step B further includes following steps:
Step B1. sends the first reference signal and the first information using identical antenna port；
Wherein, the occupied RE of the first reference signal is divided into positive integer RE group；In each RE group, the first reference signal
Modulation symbol sequence and the second reference signal modulation symbol sequence be it is orthogonal, the RE group include L RE, the modulation
Symbol sebolic addressing includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer.
10. according to the method described in claim 8, it is characterized in that, the step B further includes following steps:
Step B2. sends the first reference signal and the first information using identical antenna port；
Wherein, the first reference signal occupies a part in available RE in a PRB pair, and described can be MBSFN RS with RE
All RE occupied in one PRB pair.
11. according to the method described in claim 8, it is characterized in that, the step B further includes following steps:
Step B3. sends the second reference signal and the first information using identical antenna port；
Wherein, the first reference signal is CRS.
12. method according to claim 9 or 10, which is characterized in that the step A further includes following steps:
Step A0. send the first signaling, the first signaling instruction for carry the first information physical layer channel transmission power and
The relationship of the transmission power of first reference signal.
13. method according to claim 9 or 10, which is characterized in that the step A further includes following steps:
Step A1. sends the second signaling, and the second signaling indicates the first ID；
Wherein, initialization of the first ID for the generator of the RS sequence of the first reference signal, the first ID is nonnegative integer, first
ID is that cell is specific.
14. according to the method for claim 11, which is characterized in that the step A further includes following steps:
Step A2. send third signaling, third signaling instruction for carry the first information physical layer channel transmission power and
The relationship of the transmission power of second reference signal.
15. a kind of user equipment for supporting multi-user's superposed transmission, wherein including following module:
First module: for receiving the second reference signal and the second information；
Second module: for receiving the first reference signal and the first information；According in { the first reference signal, the second reference signal }
At least the first reference signal determine the channel parameter of first information wireless channel experienced；
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are to be overlapped in whole or in part
, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are nonoverlapping, the second information
The running time-frequency resource that the running time-frequency resource of occupancy and the second reference signal occupy is nonoverlapping；The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal；Second reference signal is MBSFN RS；The first information transmits on PMCH, the second information
It is transmitted on PMCH；First reference signal is used for determining the channel parameter of first information wireless channel experienced；Second ginseng
Examine the channel parameter that signal is used for determining the second information wireless channel experienced；First reference signal is following one:
The occupied RE of-the first reference signal is divided into positive integer RE group；In each RE group, the tune of the first reference signal
Symbol sebolic addressing processed and the modulation symbol sequence of the second reference signal be it is orthogonal, the RE group include L RE, the modulation symbol
Sequence includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer；
- the first reference signal occupies a part in available RE in a PRB pair, and described can be MBSFN RS with RE in institute
State all RE occupied in a PRB pair；
-CRS。
16. a kind of base station equipment for supporting multi-user's superposed transmission, wherein including following module:
First module: for sending the second reference signal and the second information；
Second module: for sending the first reference signal and the first information；
Wherein, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second information are to be overlapped in whole or in part
, the occupied running time-frequency resource of the first information and the occupied running time-frequency resource of the second reference signal are nonoverlapping, the second information
The running time-frequency resource that the running time-frequency resource of occupancy and the second reference signal occupy is nonoverlapping；The occupied time-frequency of first reference signal
Resource is occupied by the second reference signal；Second reference signal is MBSFN RS；The first information transmits on PMCH, the second information
It is transmitted on PMCH；First reference signal is used for determining the channel parameter of first information wireless channel experienced；Second ginseng
Examine the channel parameter that signal is used for determining the second information wireless channel experienced；First reference signal is following one:
The occupied RE of-the first reference signal is divided into positive integer RE group；In each RE group, the tune of the first reference signal
Symbol sebolic addressing processed and the modulation symbol sequence of the second reference signal be it is orthogonal, the RE group include L RE, the modulation symbol
Sequence includes L modulation symbol, and the L modulation symbol is mapped in respectively in the L RE, and the L is positive integer；
- the first reference signal occupies a part in available RE in a PRB pair, and described can be MBSFN RS with RE in institute
State all RE occupied in a PRB pair；
-CRS。
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| CN110945797B (en) * | 2017-08-29 | 2021-10-29 | 上海朗帛通信技术有限公司 | Method and device in user equipment and base station for wireless communication |
| CN115347993A (en) * | 2017-02-03 | 2022-11-15 | Idac控股公司 | Interference reduction for reference symbols in URLLC/EMBB multiplexing |
| CN111447665B (en) * | 2017-03-03 | 2022-08-26 | 南通朗恒通信技术有限公司 | Method and device used in user equipment and base station for power adjustment |
| CN110612749B (en) * | 2017-05-10 | 2022-08-26 | 上海朗帛通信技术有限公司 | Method and device used in user and base station of wireless communication |
| CN110870267B (en) * | 2017-08-11 | 2022-03-29 | 南通朗恒通信技术有限公司 | Method and device used in user and base station of wireless communication |
| CN109995487A (en) * | 2017-12-29 | 2019-07-09 | 中兴通讯股份有限公司 | Sending, receiving method, device and the equipment of reference signal |
| CN112020848B (en) * | 2018-05-04 | 2021-11-23 | 上海朗帛通信技术有限公司 | Method and arrangement in a communication node used for wireless communication |
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