CN106877987A - The unicast of multiplexing and the pilot configuration of SFN transmission - Google Patents
The unicast of multiplexing and the pilot configuration of SFN transmission Download PDFInfo
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- CN106877987A CN106877987A CN201610829017.7A CN201610829017A CN106877987A CN 106877987 A CN106877987 A CN 106877987A CN 201610829017 A CN201610829017 A CN 201610829017A CN 106877987 A CN106877987 A CN 106877987A
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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
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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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
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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
- H04L5/0058—Allocation criteria
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention describes the system and method for helping to be multiplexed unicast reference symbols and multicast transmission in same Transmission Time Interval.Especially, the invention provides the mechanism that unicast reference symbols can be multiplexed into using the single frequency network transmission of longer cyclic prefix duration.Unicast reference symbols are sent in the first symbol comprising unicast and the time slot of single frequency network transmission.For being staggeredly between the subsequent symbol of the frequency in first symbol and subframe of unicast reference symbols.
Description
The application be the applying date be on January 10th, 2008, Application No. 200880001902.X application for a patent for invention it is " multiple
The divisional application of unicast and the pilot configuration of SFN transmission ".
Cross-Reference to Related Applications
This application claims " the A METHOD AND APPARATUS FOR USING submit, entitled of on January 10th, 2007
The U.S. of A PILOT STRUCTURE WITH MULTIPLEXED UNICAST AND SFN TRANSMISSIONS " is temporarily special
The rights and interests of profit application No.60/884,404.The application also requires " the A METHOD AND submit, entitled of on January 6th, 2007
APPARATUS FOR USING A PILOT STRUCTURE WITH MULTIPLEXED UNICAST AND SFN
The rights and interests of the U.S. Provisional Patent Application No.60/888,485 of TRANSMISSIONS ".Above-mentioned application is introduced in full herein is made
It is reference.
Technical field
It is described below to relate generally to communication system, more particularly to provide pilot tone in the unicast of multiplexing and single frequency network transmission
Structure.
Background technology
Wireless communication system is widely deployed to provide various types of Content of Communication, such as voice, data etc..Typically
Wireless communication system can be supported and multiple by sharing available system resource (such as bandwidth, transmission power etc.)
The multi-address system of the communication between user.The example of this multi-address system can include CDMA (CDMA) system, time division multiple acess
(TDMA) system, frequency division multiple access (FDMA) system, OFDM (OFDMA) system etc..
Usually, wireless multiple-access communication system can simultaneously support the communication of multiple mobile devices.Each mobile device can
With via the transmission in forward and reverse and one or more base station communications.What the forward link (or downlink) referred to
It is the communication link from base station to mobile device, and reverse link (or up-link) refers to leading to from mobile device to base station
Letter link.Furthermore, it is possible to how defeated via single-input single-output (SISO) system, multiple input single output (MISO) system, multi input
Go out the communication that (MIMO) system etc. is set up between mobile device and base station,
Mimo system is usually using multiple (NT) transmitting antenna and multiple (NR) reception antenna carries out data transmission.By NT
Individual transmitting antenna and NRThe mimo channel that individual reception antenna is constituted can be broken down into NSIndividual independent channel, the independent channel can
It is referred to as space channel, wherein NS≤{NT,NR}。NSEach channel in individual independent channel corresponds to a dimension.In addition, such as
Fruit is using the additional dimension created by multiple transmitting and reception antenna, then mimo system can provide improved performance (for example
Enhanced spectrum efficiency, handling capacity and/or bigger reliability higher).
Mimo system can support different duplex technologies and be led to splitting forward and reverse on public physical medium
Letter.For example, FDD (FDD) system can use entirely different frequency zones for forward and reverse communication
Domain.Additionally, in time division duplex (TDD) system, forward and reverse communication can use public frequency region.However, passing
System technology can provide the limited feedback related to channel information or can not provide the feedback related with channel information.
The content of the invention
In order to there is a basic understanding to one or more embodiments, the simple general of these embodiments is shown below is
Include.The detailed summary of the embodiment of the not all imagination of the summarized section, it is neither crucial or important composition unit will be determined
Element is nor depict the protection domain of any or all embodiment.Its object is to one or more are presented in a simple form
Some concepts of embodiment, in this, as the preamble part for more specifically describing for presenting after a while.
According on one side, the side for carrying out pilot signal transmitted is transmitted there is provided herein a kind of unicast and multicast using multiplexing
Method.Methods described can include classifying one or more transmission mode.In addition, methods described is included according to being classified
One or more pattern is that at least one subframe selects the Cyclic Prefix duration.Methods described can also include at least part of base
In the selected Cyclic Prefix duration, pilot frequency information and user data are multiplexed at least one subframe.
It is related to include the radio communication device of the memory for preserving instruction on the other hand, the instruction is related to one
Individual or multiple transmission modes are classified, are that at least one subframe selects longer following according to one or more pattern classified
Ring prefix durations and the longer Cyclic Prefix duration is at least partially based on, to leading at least one subframe
Frequency information and user data are multiplexed.The radio communication device can also include being coupled to the processor of memory, described
Processor is used to perform the instruction being stored in the memory.
It is related to help to send the radio communication device with the pilot signal of multicast transmission multiplexing on the other hand.The dress
Put the module that can include for being classified to one or more transmission mode.In addition, described device can include being used for root
It is the module that at least one subframe selects the longer Cyclic Prefix duration according to one or more pattern classified.The dress
Putting can also be included for being at least partially based on the longer Cyclic Prefix duration, to pilot tone at least one subframe
The module that information and user data are multiplexed.
The machine that another aspect is related to be stored with thereon for classifying one or more transmission mode can be held
The machine readable media of row instruction.The machine readable media can also include being used for according to one or more pattern classified
The instruction of longer Cyclic Prefix duration is selected at least one subframe.In addition, the machine readable media can include
For being at least partially based on the longer Cyclic Prefix duration, to pilot frequency information and number of users at least one subframe
According to the instruction being multiplexed.
According on the other hand, in a wireless communication system, device can include integrated circuit.The integrated circuit can be with
It is configured as classifying one or more transmission modes.The integrated circuit can be additionally configured to according to for being classified
Plant or various modes are that at least one subframe selects the longer Cyclic Prefix duration.In addition, the integrated circuit can be by
It is configured to be at least partially based on the longer Cyclic Prefix duration, to pilot frequency information and user at least one subframe
Data are multiplexed.
In order to realize above-mentioned and related purpose, one or more of embodiments include will be explained in below and
The feature particularly pointed out in claim.Following explanation and accompanying drawing one or more embodiments are described in detail some show
Example property aspect.However, these aspect indicate be only the principle that each embodiment can be used various modes in some sides
Formula, described embodiment is intended to include all these aspects and their equivalent.
Brief description of the drawings
Fig. 1 is the diagram of the wireless communication system according to the various aspects for illustrating herein；
Fig. 2 is the diagram of the exemplary communication devices used in wireless communication system according to an aspect of this disclosure；
Fig. 3 is the diagram of the wireless communication system according to an aspect of this disclosure；
Fig. 4-10 is the diagram mapped according to the example resources of an aspect of this disclosure；
Figure 11 is the diagram of the illustrative methods according to an aspect of this disclosure, and methods described contributes to longer
Pilot configuration is provided in the multiplexing unicast and multicast transmission of Cyclic Prefix duration；
Figure 12 contributes to the diagram of the EXEMPLARY MOBILE DEVICE that pilot configuration is used in mixed mode transmissions；
Figure 13 is the diagram of the example system for helping to build pilot frequency mode according to an aspect of this disclosure；
Figure 14 can be the figure of the example wireless network environment that deployment is combined with different system described herein and method
Show；
Figure 15 contributes to the diagram of the example system that pilot frequency mode is built in multiplexing unicast and multicast transmission.
Specific embodiment
Referring now to each embodiment of Description of Drawings, wherein in whole accompanying drawing, identical reference marker is used to refer to
Similar elements.In the following description, for illustrative purposes, in order to provide the comprehensive understanding to one or more embodiments,
Give many details.It may be evident, however, that can also realize that these are implemented in the case of without these details
Example.In other examples, for the ease of describing one or more embodiments, known structure and equipment are illustrated with square frame.
As used in this application, term " component ", " module ", " system " etc. mean the entity related to computer,
It is hardware, firmware, the combination of hardware and software, software or executory software.For example, component may be, but not limited to,：
Process, processor, object, executable program, the thread for performing, program and/or the computer run on processor.As showing
Example, the application for running on the computing device and computing device can be components.One or more assemblies may reside within execution
Process and/or thread in, component may be located in a computer and/or be distributed between two or more computers.This
Outward, these components can be stored with from it various data structures various computer-readable mediums perform.These components can be with
Communicated by locally and/or remotely process, such as according to the signal with one or more packets (for example, coming from
One data of component, the component is interacted and/or with signal with another component in local system, distributed system
Mode is interacted on the network of such as internet etc with other systems) communicated.
Additionally, describing each embodiment herein in conjunction with mobile device.Mobile device is also referred to as system, Yong Hudan
Unit, subscriber station, movement station, mobile device, distant station, remote terminal, access terminal, user terminal, terminal, radio communication set
Standby, user agent, user equipment or user's set (UE).Mobile device can be cell phone, wireless phone, session setup association
View (SIP) phone, WLL (WLL) are stood, personal digital assistant (PDA), the handheld device with wireless connection capability
Or it is connected to the computing device or other processing equipments of radio modem.Additionally, describing each herein in conjunction with base station
Embodiment.Base station can be used for and mobile device communication, and the base station is also referred to as access point, node B or some its
Its term.
Additionally, various aspects or features described herein may be implemented as method, device or using standard program and/
Or the product of engineering technology.Term " product " used herein is intended to can be from any computer readable device, carrier
Or the computer program of medium access.For example, computer-readable medium can include, but are not limited to：Magnetic storage apparatus (for example,
Hard disk, floppy disk, magnetic stripe etc.), CD (for example, compact disk (CD), digital universal disc (DVD) etc.), smart card and flash memory
Equipment (for example, EPROM, card, rod, key drive etc.).Additionally, various storage media described herein can be represented for depositing
One or more equipment and/or other machine readable medias of storage information.Term " machine readable media " can include but not limit
In wireless channel and can store, comprising and/or carry instruction and/or data various other media.
Referring to Fig. 1, the wireless communication system 100 according to various embodiments presented herein is shown.System 100
Including base station 102, the base station 102 can include multiple antenna sets.For example, an antenna sets can include antenna 104 and 106,
Another group can include antenna 108 and 110, and another group can include antenna 112 and 114.Each antenna sets show two days
Line；But each group can use more or less antenna.As will be apparent to those skilled in the art, base station 102 can be with
Including transmitter chain and receiver chain, each in transmitter chain and receiver chain can also include being sent and received with signal
Associated multiple components (for example, processor, modulator, multiplexer, demodulator, demultiplexer, antenna etc.).
Base station 102 can be with one or more mobile device communications, such as mobile device 116 and mobile device 122；So
And, it is clear that base station 102 can be entered to substantially any quantity to the similar mobile device of mobile device 116 and 122
Row communication.Mobile device 116 and 122 for example can be cell phone, smart phone, laptop computer, handheld communication devices,
Handheld computing device, satelline radio, global positioning system, PDA and/or any other suitable in wireless communication system 100
On the equipment that is communicated.As described by, mobile device 116 is communicated with antenna 112 and 114, wherein antenna 112 and 114
Mobile device 116 is sent information to by forward link 118, and letter is received from mobile device 116 by reverse link 120
Breath.In addition, mobile device 122 is communicated with antenna 104 and 106, wherein antenna 104 and 106 will be believed by forward link 124
Breath is sent to mobile device 122, and by reverse link 126 from the receive information of mobile device 122.At FDD (FDD)
In system, for example, the frequency band that forward link 118 can be used from reverse link 120 is used frequency band is different, forward link
124 can use the frequency bands different from the frequency band that reverse link 126 is used.Additionally, in time division duplex (TDD) system, it is preceding
Common band can be used to link 118 and reverse link 120, forward link 124 and reverse link 126 can use common frequency
Band.
The region that each group of antenna and/or be designated to is communicated is properly termed as the sector of base station 102.For example, multiple
The mobile device that antenna can be designed as in the sector in the region covered with base station 102 is communicated.In forward link 118
With 124 on communication in, the transmitting antenna of base station 102 can improve the forward direction of mobile device 116 and 122 using beam forming
The signal to noise ratio of link 118 and 124.In addition, being utilized beamforming to being randomly dispersed in associated overlay area in base station 102
In mobile device 116 and 122 when being launched, transmitting phase is carried out to its all mobile devices by individual antenna with base station
Than the mobile device in adjacent cell can be subject to less interference.
According to an example, system 100 can be multiple-input and multiple-output (MIMO) communication system.Additionally, system 100 can be with
Use any kind of duplex of such as FDD, TDD etc..According to exemplary plot, base station 102 can be by forward link 118 and 124
It is sent to mobile device 116 and 122.In addition, mobile device 116 and 122 can estimate respective forward link or downlink
Channel and the corresponding feedback of generation, the feedback can be supplied to base station via reverse link or up-link 120 and 126
102。
Turning now to Fig. 2, illustrated is the communicator 200 disposed in a wireless communication environment.Communicator 200 can
Being base station or one part.In addition, communicator 200 can be mobile device or one part.Communicator 200 can be to
Other communicators, base station, mobile device etc. send data transfer or are received from other communicators, base station, mobile device etc.
Data transfer.For example, communicator 200 can include the receiver for being configured as being communicated in a wireless communication system
And/or transmitter system.Communicator 200 can use wireless communication technology, such as, but not limited to OFDMA, CDMA,
TDMA, FDMA etc..Communicator 200 includes transport-type detector 202, for determining the transport-type to be used.It is described
Transmission can be Single Frequency Network (SFN) transmission (such as synchronous transmission).In addition, the transmission can be unicast transmission.Furthermore, can
Transmitted with using Multicast Broadcast Single Frequency Network (MBSFN).In addition it is possible to use the combination of unicast, SFN and/or MBSFN transmission.
For example, unicast transmission can merge or be multiplexed with SFN transmission in identical Transmission Time Interval.In other words, communicate
Device 200 causes that unicast transmission and SFN transmission can be division multiplexed.It is to be understood that according to various aspects of the disclosure
Can use in above-mentioned other transmission modes beyond these.
Communicator 200 can include prefix selector 204, for determining the Cyclic Prefix for transmitting.Many modulation
Type, such as OFDM, can use Cyclic Prefix in link structure.According to exemplary plot, the Cyclic Prefix helps to improve
The reception to transmitting under the conditions of multi-path channel.Multipath is the propagation effect in radio communication, and it causes aerogram
Number by two or more paths reach antenna.Atmospheric duct, ionospheric reflection and/or refraction, or from building or massif
Reflection can produce multi-path channel condition.Cyclic Prefix can enable that multipath is obtained before actual transmissions data are received
To solution.Typically, receiver system is decoded after determining to allow frequency to realize orthogonality to signal.According to a side
Face, the Cyclic Prefix can be OFDM or the repeating part of other mode symbols.For example, can be in the section start of symbol
Repeat the ending of the symbol.In one embodiment, the length of the Cyclic Prefix is equal to protection interval or cycle.
Typically, the duration of the Cyclic Prefix should be more than the maximum delay experienced in multi-path channel.Cause
This, it is possible to use various types of circulating prefix-lengths.The Cyclic Prefix can be short Cyclic Prefix (such as 4.7 microseconds
Duration), long loop prefix (such as 16.66 microseconds) or longer Cyclic Prefix (such as duration of 33.33 microseconds).
The longer Cyclic Prefix (such as 33.33 microseconds) is probably favourable in the SFN schemes for widely using repeater.Can be with
The numerology of the longer Cyclic Prefix is built by the way that pitch interval is reduced into 7.5KHz.
Communicator 200 also includes multiplexer 206, and the multiplexer 206 can merge or be multiplexed two or more differences
The transmission of type or pattern.In accompanying drawing example, multiplexer 206 can be by point-to-point (such as unicast) transmission and SFN or MBSFN
Transmission multiplexing.In order to minimize the Cyclic Prefix insertion loss of unicast transmission, transmitted using the unicast of longer cyclic prefix and SFN
Should be time multiplexed.In other words, some time slots are exclusively used in longer cyclic prefix SFN transmission.However, in order to promote
Efficiency in RAN1, unicast reference symbols and longer cyclic prefix SFN multicast transmissions should be in identical Transmission Time Intervals
Multiplexing.In one embodiment, the money of time slot of the change of multiplexer 206 comprising longer cyclic prefix SFN transmission and unicast transmission
Source is distributed.According to diagram, unicast reference symbols are sent in symbol in the first of time slot and the 3rd.In addition, distributing to unicast
The frequency or tone of reference symbol described first and the 3rd intersymbol be staggeredly (for example, being used and the in the 3rd symbol
The different frequency of one symbol).Typically, unicast reference symbols take every 6th tone.It is multiple according to an aspect of this disclosure
Configured (structure) with 206 pairs of resources of device so that unicast reference symbols take in symbol every in first and the 3rd
12nd tone.Additional extension in the distribution maintains the threshold sampling to unicast tunnel, to contribute to for up to
The delay extension of 11 microseconds carries out accurate channel estimation.In addition, by the quantity of the tone shared by reduction, decreasing frequency
The expense of the unicast reference symbols in domain.However, due to the smaller pitch interval of 7.5KHz, threshold sampling is reserved.For
Illustrative purpose and it is unrestricted, provide above-mentioned measurement.It is clear that can be accorded with using other of unicast reference symbols
Number interval, frequency interval and staggeredly.
In addition, though it is not shown, it will be appreciated that communicator 200 can include the storage for preserving instruction
Device, the instruction is related to receive data packet transfer, merging data packet transmission, decoding data transmission, transmission confirmation message etc.
Deng.Additionally, the memory can be to preserve the packet being previously received, for merging before decoding.Additionally, logical
T unit 200 can include processor, the processor can combine execute instruction (be for example stored in instruction in memory, from
Instruction of not homologous acquisition etc.) used.
Turning now to Fig. 3, illustrated is the wireless communication system 300 of the deployment for implementing multiplex unicast and multicast transmission.
System 300 includes communicator 302 and 304.Communicator 302 and/or 304 can be base station or one part.In addition, communication
Device 302 and/or 304 can be mobile device or one part.According to exemplary plot, can between one or more base stations,
System is used between one or more mobile devices (such as ad-hoc) or in the radio communication between base station and mobile device
300。
System 300 include communicated with communicator 304 (and/or any amount of different device (not shown)) communication dress
Put 302.Communicator 302 can transmit data to device 304 by forward link channel；In addition communicator 302 can be with
Data are received from device 304 by reverse chain channel.The forward link and backward channel can include that point-to-point transmits mould
Formula (for example, unicast), point-to-multipoint transmission mode (for example, multicast) and/or broadcast transmission mode.In addition, system 300 can be
Multiple-input and multiple-output (MIMO) system.
Communicator 302 includes transport-type detector 306, prefix selector 308 and multiplexer 310.The transmission class
Type detector 306 can detect the transport-type or pattern to be used in the transmission for going to device 304.For example, it is described
Transmission can be unicast transmission, SFN transmission, MBSFN transmission and/or broadcast.The prefix selector 308 can determine transmission
Cyclic Prefix.In the example in the figures, Cyclic Prefix can be short Cyclic Prefix, long loop prefix or longer Cyclic Prefix.
The duration of short Cyclic Prefix can be 4.7 microseconds, and the duration of long loop prefix can be 16.66 microseconds, and longer
Or the duration of the Cyclic Prefix grown very much can be 33.33 microseconds.The determination can be based on channel condition, expectation expense
Threshold value, transmission mode etc..
Multiplexer 310 was multiplexed before being transmitted to device 304 to symbol.Multiplexer 310 can be in same biography
It is multiplexed to unicast reference symbols and using the SFN transmission of longer Cyclic Prefix in defeated time interval.In example illustrated
In, multiplexer 310 can build the time slot comprising longer Cyclic Prefix SFN transmission and unicast transmission so that unicast reference is accorded with
Number sent in symbol in the first of the time slot and the 3rd.In addition, the frequency distribution of unicast reference symbols can be described the
It is staggeredly between one and the 3rd symbol.Furthermore, the unicast reference symbols can take described first and the 3rd in symbol
Every 12nd tone.Because pitch interval is 7.5KHz, thus additional spacer between shared tone reduce expense and
The threshold sampling of unicast tunnel is not influenceed.For the time slot transmitted not comprising longer cyclic prefix SFN, it is possible to use traditional skill
Art.
Communicator 304 can include prefix detector 312, and the prefix detector is used in transmission or one part really
The fixed Cyclic Prefix duration used by communicator 302.According to diagram, communicator 304 can be mobile device.Typical case
Ground, mobile device detects the Cyclic Prefix duration during initial cell search procedure.Generally, mobile device has two
Individual hypothesis：Short Cyclic Prefix and long loop prefix.However, with the introducing of longer cyclic prefix (such as 33.33 microseconds), occurring
3rd hypothesis.In the transmission using longer cyclic prefix numerology, there are three symbols in each time slot.In time division multiplex
(TDM) in structure, Primary Synchronisation Code (PSC) and auxiliary synchronous code (SSC) are sent on two isolated signs in a time slot.Cause
This, transmits for CCCH (CCCH) or main broadcast channel (BCH), and each time slot only retains a symbol.Therefore, exist
In one embodiment, the longer Cyclic Prefix numerology is not used in the time slot transmitted comprising PSC and/or SSC.
Referring now to Fig. 4-10, exemplary resource impact is depicted according to an aspect of this disclosure.Said for simplification
Bright purpose, the example illustrates the resource block in time and frequency dimension, and its duration is equal to a son of transmission
Frame or two time slots (such as 1 millisecond).A tone is represented along each frame of frequency axis, the interval between its medium pitch is depended on
In the Cyclic Prefix duration for being used.A symbol, the wherein duration of symbol are represented along each frame of time shaft
Used Cyclic Prefix is also depended on quantity.It is clear that Fig. 4-10 is for illustrative purposes, and the disclosure
Content is not limited to the scope of these examples.How those skilled in the art should be understood that by changing pitch interval, subframe
Duration etc., the system that resource impact is expanded to the antenna including varying number.
In one embodiment, continue for long cyclic prefix duration (such as 16.66 microseconds) and short Cyclic Prefix
Time (such as 4.7 microseconds), traditional reference symbol structure is all identical.Using traditional structure, if delay extension (example
Such as the time difference between first multipath components and last multipath components) it is more than 13 microseconds, then any mobile device institute
The channel estimation of execution is all likely encountered aliasing.Even if when long cyclic prefix duration or longer cyclic prefix continue
Between in the case of, if unicast delay spread exceed threshold value, then the numerology can not be used.Figure 4 and 5 are depicted and length
Two unicast pilot structures that Cyclic Prefix duration transmissions are used together, it helps avoid prefix durations and channel
Mismatch between accuracy of estimation.
In fig. 4, it is illustrated that the subframe (two time slots) comprising unicast pilot symbols.When long loop prefix continues
Between under, each time slot include six symbols.Described structure provides efficient operation in high Doppler scenarios.At first
The first of gap and the 4th on symbol and the second time slot first and the 4th pilot symbol transmitted on symbol.At two the of time slot
In four symbols, not every resource is mapped to antenna.In addition, the mapping is transformed into offer diversity.Fig. 5 describes to carry
For another pilot frequency mode of more low overhead.This structure illustrate taken in symbol in the first of described two time slots and the 4th it is every
Every a frequency pilot sign for tone.This construction reduce the expense of half.It is similar with the pattern that Fig. 4 is described, the mapping quilt
Offer diversity is provided.
Fig. 6-7 depicts the unicast and MBSFN transmission of multiplexing according to an aspect of this disclosure.In the example in the figures,
The example described is related to the unicast transmission in acknowledgement channel (ACKCH) and physical downlink control channel (PDCCH).No
Unicast data is sent.In one embodiment, two OFDM symbols of the ACKCH and PDCCH transmission spans.Fig. 6 is depicted
Based on the multiplexing transmission of the pilot frequency mode described similar to Fig. 4, and Fig. 7 is depicted based on the pilot tone described similar to Fig. 5
The multiplexing transmission of pattern.
In the resource block of illustrated multiplexing, the unicast reference symbols are shown as being mapped to specific antenna.At this
In exemplary arrangement, there is provided 4 antenna MIMO systems.In addition to unicast reference symbols, in two symbols of beginning of subframe
Send unicast ACKCH and PDCCH transmission.Alternatively, it is also possible to send SFN data and SFN on the symbol in described subframe
Reference symbol.In figure 6, unicast reference symbols structure is not changed；However, expense is still huge.In the figure 7, not in subframe
Unicast reference symbols are sent in second time slot.In the case where unicast data is lacked, multiplexing structure helps to reduce in Fig. 6 and 7
Expense.Any coherent demodulation in channel quality indicator (CQI) degree of accuracy and the subframe after example illustrated is all received
To influence.
Turning now to Fig. 9 and 10, illustrated is the list of the unicast pilot structure for using the longer cyclic prefix duration
Broadcast reference symbol pattern.For example, the longer cyclic prefix duration can be 33.33 microseconds, and by by sound
Interval is adjusted to be reduced to 7.5KHz from 15KHz to build.Under the longer cyclic prefix duration, each time slot includes 3 symbols
Rather than 6 symbols.Therefore, 1 millisecond of subframe includes 6 symbols rather than 12 symbols.Pattern depicted in figure 9 can be used for
4 road mimo systems.If it can be used for, the pattern illustrated in Figure 10 provides lower opening in using the system of 2 road MIMO
Pin, the system has cyclic delay diversity (CDD) compared with other physical antennas.
With reference now to Fig. 8, illustrated is to be transmitted to be multiplexed with longer cyclic prefix SFN according to an aspect of this disclosure
Unicast transmission unicast reference symbol pattern.Unicast reference is included similar to illustrated example temper frame in Fig. 6 and 7, Fig. 8
Symbol, SFN reference symbols, unicast ACKCH and PDCCH transmission and SFN data.Comprising longer cyclic prefix SFN transmission and
In the time slot of unicast transmission, as a result, pitch interval is 7.5KHz and each time slot includes 3 symbols.In the time slot
The unicast reference symbols are sent in first symbol.In addition, reference symbol of the frequency in the first symbol of first time slot
It is staggeredly and 1 millisecond of first symbol of the second time slot of subframe between.Although quantitatively, described be staggeredly depicted as 6
Tone, it should be appreciated that, it is possible to use other alternating quantities.And, the unicast reference symbols take the first of each time slot
Every 12nd tone of symbol.For example, antenna 1 can be mapped to the reference symbol in specific tone.Under antenna 1
One mapping 12 tone more high or low than the specific tone.Reference symbol is expanded into every 12nd tone, this holding
Threshold sampling is carried out while also reducing the expense in frequency domain to unicast tunnel for the delay extension close to 11 microseconds.For not wrapping
Time slot containing longer cycle frequency SFN transmission, the pitch interval can be 15KHz, and can use for example in Fig. 6 and 7
The nominal structure (nominal structure) of middle diagram.
With reference to Figure 11, illustrated is on contributing to multiplex unicast and SFN to transmit, while reserved have critical enough adopting
The method of the unicast pilot structure of sample characteristic.However, for simplicity of illustration, methods described is shown and described as one and is
Row operation, it should be appreciated that and it is realized that, methods described is not limited to the order of these actions, because according to one or more realities
Example is applied, some actions can occur and/or with other actions illustrated and described herein while carrying out in a different order.Example
Such as, it will be appreciated by those skilled in the art that and it is realized that, alternatively, method can be represented as it is a series of correlation states or
Event, such as in the form of state diagram.In addition, according to one or more embodiments, realizing that a kind of method is not required for all showing
The action for going out.
It is illustrated to contribute in the unicast transmission of multiplexing and when continuing with longer cyclic prefix turning now to Figure 11
Between SFN transmission in provide pilot configuration method 1100.Inter alia, it is possible to use method 1100 is estimated with for channel
Pilot frequency mode is built in the multiplexed situation that expense is reduced while meter provides enough threshold samplings.In one embodiment, may be used
With implementation 1100 on a mobile device and/or a base station in a wireless communications system.In reference numeral 1102, observation transmission mould
Formula.The transmission can be unicast transmission, SFN transmission, MBSFN transmission, broadcast transmission etc..Additionally, the transmission can be it
Any combinations.In addition, the transmission can include the circulating prefix-length of change.For example, when the Cyclic Prefix continues
Between can be that (33.33 is micro- for short duration (such as 4.7 microseconds), long duration (16.66 microsecond) or longer duration
Second).Determine whether transmission includes having being transmitted using longer or the longer cyclic prefix duration SFN in reference numeral 1104
Time slot.If NO, then method 1100 proceeds to reference numeral 1106, wherein using conventional reference symbol structure.If deposited
In longer cyclic prefix SFN transmission, then method 1100 proceeds to reference numeral 1108.1108, a kind of structure is created, in the knot
In structure, unicast reference symbols are sent in the symbol of the time slot.In reference numeral 1110, increase by the first symbol of the time slot
Unicast reference symbols take tone between gap.For example, the fiducial mark can be spaced to occupy longer
Every 12nd tone of the first symbol in Cyclic Prefix transmission, rather than the typical case in long and/or short Cyclic Prefix transmission
Every 6th tone for using.In reference numeral 1112, the frequency is at one the first of time slot comprising unicast reference symbols
It is staggeredly between first symbol of symbol and the subsequent time slot comprising unicast reference symbols.When two time slots are all in same height
When in frame, the frequency is staggeredly between symbol in the first of the subframe and the 4th.
It is to be understood that according to one or more aspects described herein, can be to being transmitted using which, using which
Cyclic Prefix, whether should make deduction using special multiplexer mode etc..As it is used herein, term " deduction " or " pushing away
Reason " is commonly referred to as according to the one group of observation result obtained by event and/or data, inference or be inferred to system, environment and/
Or the process of the state of user.For example, reasoning can be used to identify specific context or action, or reasoning can be produced
The probability distribution of state.This reasoning is probabilistic, that is to say, that according to the data and event that are considered, is calculated interested
State probability distribution.Reasoning also refers to the technology for constituting advanced event according to event set and/or data set.It is this
Reasoning causes the event set for arriving according to the observation and/or the event data that is stored to construct new event or action, without running affairs
Whether part is related on the hand-to-hand time, and whether event and data come from one or several events and data source.
According to example, one or more method given above can include making the deduction about determining transmission mode.
By further illustrating, pair can determine whether whether time slot comprising longer cyclic prefix SFN transmission and unicast transmission, should make
Whether should be that main target etc. makes deduction with high doppler structure, expense reduction.It will be understood that above-mentioned example is to say
Bright property and be not intended to the deduction number that can make of limitation or combine to make from different embodiments described here and/or method push away
Disconnected mode.
Figure 12 contributes to the shifting transmitted using the unicast comprising multiplexing and the SFN with the longer cyclic prefix duration
The diagram of dynamic equipment 1200.Mobile device 1200 includes receiver 1202, and the receiver is received from such as reception antenna (not
Show) signal, and typical operation (such as filtering, amplification, down coversion etc.) is performed to received signal and to adjusting
Signal afterwards is digitized to be sampled.Receiver 1202 can also be such as MMSE receivers, and can include energy
Enough demodulate received signal and provide it to demodulator 1204 of the processor 1206 for channel estimation etc..Processor
1206 can be exclusively used in the information that the information that is received by receiver 1202 of analysis and/or generation send for emitter 1216
Processor, the processor of the one or more assemblies for controlling mobile device 1200, and/or for analyzing by receiver 1202
The one or more assemblies of the information for receiving, the information that generation sends for emitter 1216, and control mobile device 1200
Processor.
Mobile device 1200 can comprise additionally in memory 1208, and the memory is operatively coupled to processor 1206
And can store be associated the data for sending, the received data information related to available channel with signal Analysis
Information, power, speed that data and/or interference strength are associated with distributed channel etc., and other any are suitable for channel
The information estimated and transmitted via channel.Memory 1208 can store in addition with (for example based on performance, based on appearance
Amount etc.) estimate and/or use the associated agreement of channel and/or algorithm.
It is to be appreciated that data storage device (such as memory 1208) described herein can be volatile storage
Device or nonvolatile memory, or both volatile memory and nonvolatile memory can be included.Be illustrated with and
Unrestricted, nonvolatile memory can include read-only storage (ROM), programming ROM (PROM), electrically programmable ROM
(EPROM), electric erasable PROM (EEPROM) or flash memory.Volatile memory can be included as outside slow at a high speed
Rush the random access memory (RAM) of memory.It is illustrated with and unrestricted, RAM there can be diversified forms, for example synchronously
It is RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced
SDRAM (ESDRAM), Synchlink DRAM (SLDRAM) and direct Rambus RAM (DRRAM).System and method is deposited
Reservoir 1208 is intended to include but are not limited to these and any other suitable type of memory.
Processor 1202 is also operably coupled to prefix detector 1210, the prefix detector be used to determining transmission or
The Cyclic Prefix duration that communicator 302 in one part is used.According to diagram, communicator 304 can be moved
Dynamic equipment.Typically, mobile device detects the Cyclic Prefix duration during initial cell search procedure.Generally, it is mobile
There are two hypothesis in equipment：Short Cyclic Prefix and long loop prefix.However, with long loop prefix (such as 33.33 microseconds)
Introduce, occur in that the 3rd hypothesis.In the transmission using longer cyclic prefix numerology, each time slot has three symbols.
After used Cyclic Prefix numerology is detected, the transmission can be decoded and reference symbol is used for unicast tunnel
Estimate.Mobile device 1200 also includes modulator 1214 and emitter 1216, and the emitter 1216 is used to (for example should signal
Answer message) it is sent to such as base station, another mobile device etc..Although being depicted as independently of processor 1206, should
It is realized that, prefix detector 1210 and/or modulator 1214 can be the part or multiple processors of processor 1206 (not
Show).
Figure 13 is the exemplary plot of the system 1300 according to an aspect of this disclosure.System 1300 includes thering is receiver
1310 and the base station 1302 (such as access point) of emitter 1322, the receiver pass through multiple reception antennas 1306 from one or
Multiple mobile devices 1304 receive signal, and the emitter passes through multiple transmitting antennas 1308 to one or more mobile devices
1304 send.In one aspect, data flow can be sent to emitter 1322 one or more mobile devices 1304 as number
According to packet sequence, so that sending each packet successively until being identified.Receiver 1310 can be received from antenna 1306
Information, and be operationally associated with demodulator 1312, the demodulator is used to demodulate received information.Can be with profit
Demodulation symbol is analyzed with for the similar processor 1314 of the processor described by Figure 12, and the processor 1314 is coupled
To memory 1316, the memory storage with estimate signal (such as pilot tone) intensity and/or interference strength, sent or from
The information of data (or the independent base station (not shown)) correlation that mobile device 1304 is received, and/or it is any other on holding
Row various operations described herein and the adequate information of function.
Processor 1314 is also coupled to transmit detector 1318, and the detector is used to determine going to mobile device
Transmission mode used in 1304 transmission.The transmission mode can be unicast mode, SFN patterns, MBSFN patterns, wide
Broadcast one of pattern or its combination.Base station 1302 can also include prefix selector 1320, the prefix selector selection circulation
Prefix durations are used with transmission or one part.For example, change can be used in the different subframes of transmission
The Cyclic Prefix duration.Information to be transmitted can be provided to modulator 1322.Modulator 1322 can be to for sending out
Machine 1326 is penetrated to be multiplexed via the information that antenna 1308 is sent to mobile device 1304.Although being depicted as independently of processor
1314, it should be appreciated that, demodulator 1312, detector 1318, selector 1320 and/or modulator 1322 can be processors
1314 part or multiple processor (not shown).
Figure 14 shows example wireless communications 1400.For simplicity purposes, wireless communication system 1400 is described
One base station 1410 and a mobile device 1450.It will be appreciated, however, that system 1400 can include more than one base
Stand and/or more than one mobile device, wherein additional base station and/or mobile device may be largely analogous to or different from
The exemplary base 1410 and mobile device 1450 of lower description.In addition, it is to be appreciated that base station 1410 and/or mobile device
1450 can using system as described herein (Fig. 1-3 and 12-13) and/or method (Figure 11) contribute between channel radio
Letter.
In base station 1410, the business datum of multiple data flows is supplied to transmission (TX) data processor from data source 1412
1414.According to an example, each data flow can be sent by respective antenna.TX data processors 1414 are based upon business
The specific coding scheme of data flow selection is formatted, encodes and interweaves to the business data flow, encoded to provide
Data.
OFDM (OFDM) technology can be used, the coded data of each data flow and pilot data are answered
With.Additionally or alternatively, the frequency pilot sign can be frequency division multiplexed (FDM), time division multiplex (TDM) or code division multiplexing
(CDM).The known data pattern that the pilot data is typically processed in known manner, and can by with
In mobile device 1450 estimating channel response.Can be based upon each data flow selection certain modulation schemes (such as two enter
Phase-shift keying (PSK) (BPSK) processed, QPSK (QPSK), M phase-shift keying (PSK)s (M-PSK), M quadrature amplitude modulations (M-QAM) etc.)
The coded data of pilot tone and each data flow to the multiplexing is modulated (such as symbol mapping), to provide modulation symbol
Number.The instruction for being performed or being provided using processor 1430 determines data rate, coding and the modulation of each data flow.
The modulation symbol of data flow can be provided to TX MIMO processors 1420, and the processor further processes institute
State modulation symbol (such as OFDM).Then, TX MIMO processors 1420 to 1422t to NTIndividual emitter (TMTR) 1422a
N is providedTIndividual stream of modulation symbols.In various embodiments, beam forming weighting is applied to data by TX MIMO processors 1420
The symbol of stream and sending the antenna of symbol.
Each emitter 1422 receives and processes respective symbol stream to provide one or more analog signals, and further
Regulation (such as amplification, filtering and up-conversion etc.) described analog signal is brewed suitable for what is transmitted on mimo channel to provide
Signal.In addition, from NTIndividual antenna 1424a to 1424t sends the N of spontaneous emission machine 1422a to 1422t respectivelyTIndividual brewed letter
Number.
In mobile device 1450, transmitted modulated signal is by NRIndividual antenna 1452a to 1452r is received, and is come from
The reception signal of each antenna 1452 is provided to respective receiver (RCVR) 1454a to 1454r.Each receiver 1454 is adjusted
Section (for example filter, amplify and down coversion) respective signal, is digitized to provide sampling, and enter to the signal after regulation
The treatment of one step is described to sample to provide corresponding " reception " symbol stream.
RX data processors 1460 can be received and processed from N based on specific receiver treatment technologyRIndividual receiver
1454 NRIt is individual to have received symbol stream, to provide NTIndividual " detection " symbol stream.RX data processors 1460 can be demodulated, solve friendship
Each detection symbols stream is knitted and decodes, to recover the business datum of the data flow.Performed by RX data processors 1460
Treatment and the treatment complementation performed by the TX MIMO processors 1420 and TX data processors 1414 in base station 1410.
Processor 1470 periodically can determine which pre-coding matrix used as described above.Additionally, processor 1470 can
Include the reverse link message of matrix index portion and rank value part to formulate.
The reverse link message can include the different types of letter related to communication link and/or received data stream
Breath.The reverse link message can be processed by TX data processors 1438, be modulated by modulator 1480, by emitter 1454a
Adjusted to 1454r and sent back by base station 1410, wherein the TX data processors 1438 are also received from data source 1436
Multiple data flows business datum.
In base station 1410, the modulated signal from mobile device 1450 is received by antenna 1424, is adjusted by receiver 1422
Section, is demodulated, and process reverse transmitted by mobile device 1450 to extract as RX data processors 1442 by demodulator 1440
Chain circuit message.It is described to determine to determine using which pre-coding matrix additionally, processor 1430 can process extracted message
Beam forming is weighted.
Processor 1430 and 1470 can respectively instruct (such as control, coordination, management etc.) to be set in base station 1410 and movement
Operation at standby 1450.Processor 1430 and 1470 can be associated with respective memory 1432 and 1472, the memory
Storage program is encoded and data.Processor 1430 and 1470 can also perform calculating to derive up-link and downlink respectively
Frequency and impulse response estimate.
It should be understood that embodiment described herein can using hardware, software, firmware, middleware, microcode or
Its any combinations is realized.Realized for hardware, can be in one or more application specific integrated circuit (ASIC), digital signal processors
(DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array (FPGA), treatment
Device, controller, microcontroller, microprocessor, other electronic units for being designed to perform function described herein, or its combination
In realize the processing unit.
When the present embodiment is implemented using software, firmware, middleware or microcode, program code or code segment, the reality
Applying example can be stored in machine readable media, such as storage assembly.Code segment can represent process, function, subprogram, journey
Any combinations of sequence, routine, subroutine, module, software kit, class or instruction, data structure or program statement.By transmission and/
Or receive information, data, independent variable, parameter or storage content, code segment may be coupled to another code segment or hardware circuit.
Can using including that storage is shared, message transmission, alternative space, network transmission etc. any suitable means are transmitted, forward or
Transmission information, independent variable, parameter, data etc..
For software implementation, can be using the module (such as process, function etc.) for performing functionality described herein come real
Apply techniques described herein.Software code can be stored in the memory unit, and by computing device.Memory cell can be with
Realized inside processor or outside processor, in the case of being realized outside processor, the memory cell can be by this
Various means are communicably coupled to the processor known to field.
With reference to Figure 15, illustrated is to implement to send the system 1500 with the pilot signal of multicast transmission multiplexing.Citing comes
Say, system 1500 can be at least partially situated in mobile device and/or base station.It is to be understood that system 1500 is expressed
It is to include functional block, it can be the functional block for representing the function that processor, software or its combination (such as firmware) are realized.System
1500 logical groups 1502 for including the electronic component that can be cooperated.For example, logical groups 1502 can include being used for transmission
The electronic building brick 1504 that pattern is classified.The pattern can be point-to-point transmission (such as unicast), point-to-multipoint (such as many
Broadcast), broadcast or its combination.Additionally, logical groups 1502 can include the electronic building brick for selecting the Cyclic Prefix duration
1506.For example, transmission mode, channel condition or efficiency can influence the used Cyclic Prefix duration.Separately
Outward, logical groups 1502 can include the electronic building brick 1508 for the multiplexing pilot information in subframe.For example, being followed comprising longer
In the subframe of ring prefix SFN transmission, unicast pilot information can be sent in symbol in the first of the subframe and the 4th.In addition,
The frequency for being used can described first and the 4th intersymbol it is interleaved.And, system 1500 can include storage reservoir
1510, for preserving the instruction for performing the function being associated with electronic building brick 1504,1506 and 1508.Although being shown as
In the outside of memory 1510, it is understood that, one or more in electronic building brick 1504,1506 and 1508 can be deposited
It is the inside of memory 1510.
Example including one or more embodiments as described above.Obviously, in order to describe foregoing embodiment
And describe part or method each it is conceivable that combination be impossible, but those skilled in the art may recognize that
Arrive, many further combination and displacement of each embodiment are possible.Therefore, described embodiment is intended to covering and falls into
All these replacements of appended spirit and scope by the claims, modification, modification.Additionally, just in specific embodiment or power
Profit require in for the term "comprising" that uses, the word cover mode similar to " including " word, as " including " word exists
It is used as in claim as link word explains.
Claims (14)
1. a kind of unicast and multicast using multiplexing is transmitted to send one group of method of pilot signal, including：
One or more transmission mode is classified；
It is that at least one subframe selects the longer Cyclic Prefix duration according to one or more pattern classified；And
The longer Cyclic Prefix duration is at least partially based on, unicast reference is accorded with least one subframe
Number, multicast reference symbol and multicast users data be multiplexed,
Wherein, the multiplexing includes one below：
When at least one subframe does not include longer Cyclic Prefix single frequency network transmission, at least one subframe
Unicast reference symbols are used in two time slots；And
When at least one subframe includes longer Cyclic Prefix single frequency network transmission, only unicast reference symbols distribution is existed
In first time slot of at least one subframe.
2. the method for claim 1, wherein the transmission mode includes that unicast transmission, single frequency network transmission, multicast are passed
At least one of defeated, synchronous transmission transmission and broadcast transmission.
3. the method for claim 1, wherein the longer Cyclic Prefix duration is by reducing pitch interval
Come what is built.
4. the method for claim 1, also including preventing from using longer Cyclic Prefix in the subframe comprising synchronous code.
5. a kind of radio communication device, including：
Memory, it preserves the instruction related to operations described below：One or more transmission mode is classified；According to being classified
One or more pattern, be that at least one subframe selects longer Cyclic Prefix duration；And it is at least partially based on institute
The longer Cyclic Prefix duration is stated, pilot frequency information and multicast users data are answered at least one subframe
With；And
Processor, it is coupled to the memory, for performing the instruction preserved in the memory,
Wherein, the instruction related to the multiplexing includes one below：
With when at least one subframe do not include longer Cyclic Prefix single frequency network transmission when, at least one subframe
Two time slots in use the related instruction of unicast reference symbols；And
With when at least one subframe includes longer Cyclic Prefix single frequency network transmission, only unicast reference symbols are distributed
The related instruction in the first time slot of at least one subframe.
6. radio communication device as claimed in claim 5, wherein, the transmission mode includes that unicast transmission, Single Frequency Network are passed
At least one of defeated, multicast transmission, synchronous transmission transmission and broadcast transmission.
7. radio communication device as claimed in claim 5, wherein, the memory is also preserved and prevented comprising synchronous code
The instruction that the longer duration is related is used in subframe.
8. it is a kind of to help to send the radio communication device with the pilot signal of multicast transmission multiplexing, including：
For the module classified to one or more transmission mode；
For according to one or more pattern classified, being that at least one subframe selects the longer Cyclic Prefix duration
Module；And
For being at least partially based on the longer Cyclic Prefix duration, to pilot frequency information at least one subframe
The module being multiplexed with user data,
Wherein, the module for being multiplexed includes one below：
For when at least one subframe does not include longer Cyclic Prefix single frequency network transmission, in described at least one son
The module of unicast reference symbols is used in two time slots of frame；And
For when at least one subframe includes longer Cyclic Prefix single frequency network transmission, only by unicast reference symbols point
Fit over the module in the first time slot of at least one subframe.
9. radio communication device as claimed in claim 8, wherein, the transmission mode includes that unicast transmission, Single Frequency Network are passed
At least one of defeated, multicast transmission, synchronous transmission transmission and broadcast transmission.
10. radio communication device as claimed in claim 8, also including for preventing in the subframe comprising synchronous code using more
The module of duration long.
A kind of 11. non-transitory machine readable medias, are stored thereon with machine-executable instruction, and the machine-executable instruction is used
In：
One or more transmission mode is classified；
It is that at least one subframe selects the longer Cyclic Prefix duration according to one or more pattern classified；And
The longer Cyclic Prefix duration is at least partially based on, to pilot frequency information and use at least one subframe
User data is multiplexed,
Wherein, the multiplexing includes one below：
When at least one subframe does not include longer Cyclic Prefix single frequency network transmission, at least one subframe
Unicast reference symbols are used in two time slots；And
When at least one subframe includes longer Cyclic Prefix single frequency network transmission, only unicast reference symbols distribution is existed
In first time slot of at least one subframe.
12. machine readable medias as claimed in claim 11, wherein, the transmission mode includes unicast transmission, Single Frequency Network
At least one of transmission, multicast transmission, synchronous transmission transmission and broadcast transmission.
13. machine readable medias as claimed in claim 11, wherein, selection the Cyclic Prefix duration include prevent comprising
The longer duration is used in the subframe of synchronous code.
A kind of device in 14. wireless communication systems, described device includes：
Integrated circuit, it includes processor and memory, and is used for：
One or more transmission mode is classified；
It is that at least one subframe selects the longer Cyclic Prefix duration according to one or more pattern classified；And
The longer Cyclic Prefix duration is at least partially based on, to pilot frequency information and many at least one subframe
Broadcasting user data are multiplexed,
Wherein, it is further used for performing one of following operation for performing the integrated circuit of multiplexing：
When at least one subframe does not include longer Cyclic Prefix single frequency network transmission, at least one subframe
Unicast reference symbols are used in two time slots；And
When at least one subframe includes longer Cyclic Prefix single frequency network transmission, only unicast reference symbols distribution is existed
In first time slot of at least one subframe.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
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| US88440407P | 2007-01-10 | 2007-01-10 | |
| US60/884,404 | 2007-01-10 | ||
| US88848507P | 2007-02-06 | 2007-02-06 | |
| US60/888,485 | 2007-02-06 | ||
| US11/971,801 US8077801B2 (en) | 2007-01-10 | 2008-01-09 | Pilot structure with multiplexed unicast and SFN transmissions |
| US11/971,801 | 2008-01-09 | ||
| CN200880001902.XA CN101584175B (en) | 2007-01-10 | 2008-01-10 | The clean culture of multiplexing and the pilot configuration of SFN transmission |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880001902.XA Division CN101584175B (en) | 2007-01-10 | 2008-01-10 | The clean culture of multiplexing and the pilot configuration of SFN transmission |
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| Publication Number | Publication Date |
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| CN106877987A true CN106877987A (en) | 2017-06-20 |
| CN106877987B CN106877987B (en) | 2020-08-07 |
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| CN201610829017.7A Active CN106877987B (en) | 2007-01-10 | 2008-01-10 | Pilot structure for multiplexed unicast and SFN transmissions |
| CN200880001902.XA Active CN101584175B (en) | 2007-01-10 | 2008-01-10 | The clean culture of multiplexing and the pilot configuration of SFN transmission |
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| CN200880001902.XA Active CN101584175B (en) | 2007-01-10 | 2008-01-10 | The clean culture of multiplexing and the pilot configuration of SFN transmission |
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| US9160592B2 (en) * | 2011-02-23 | 2015-10-13 | Qualcomm Incorporated | System and method for single carrier optimization for evolved multimedia broadcast multicast service |
| US9264249B2 (en) * | 2012-03-28 | 2016-02-16 | Qualcomm Incorporated | Extending cyclic prefix length in wireless communication network having mixed carrier |
| US10237103B2 (en) * | 2015-11-24 | 2019-03-19 | Qualcom Incorporated | Changing cyclic prefix (CP) length based on precoder mode selection |
| US11589269B2 (en) | 2016-03-31 | 2023-02-21 | British Telecommunications Public Limited Company | Mobile communications network |
| WO2017167838A1 (en) | 2016-03-31 | 2017-10-05 | British Telecommunications Public Limited Company | Mobile communications network |
| US11510116B2 (en) | 2016-06-29 | 2022-11-22 | British Telecommunications Public Limited Company | Multicast-broadcast mobile communications network |
| US10771298B2 (en) * | 2016-08-04 | 2020-09-08 | British Telecommunications Public Limited Company | Mobile communications network |
| US10159097B2 (en) * | 2016-09-30 | 2018-12-18 | Qualcomm Incorporated | Signaling and determination of slot and mini-slot structure |
| CN110581727A (en) | 2018-06-08 | 2019-12-17 | 英国电讯有限公司 | Wireless telecommunications network |
| CN111193579B (en) * | 2018-11-13 | 2021-09-24 | 维沃移动通信有限公司 | Reference time position determining method, transmission method, terminal and network equipment |
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| WO2005122517A1 (en) * | 2004-06-04 | 2005-12-22 | Qualcomm Incorporated | Wireless communication system with configurable cyclic prefix length |
| WO2006036759A1 (en) * | 2004-09-24 | 2006-04-06 | Qualcomm Incorporated | Method and apparatus for communication in a system employing differing transmission protocols |
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|---|---|
| CN106877987B (en) | 2020-08-07 |
| UA97824C2 (en) | 2012-03-26 |
| CN101584175A (en) | 2009-11-18 |
| CN101584175B (en) | 2016-10-05 |
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