CN101507220A - Method and apparatus for flexible pilot pattern - Google Patents

Method and apparatus for flexible pilot pattern Download PDF

Info

Publication number
CN101507220A
CN101507220A CNA2007800309812A CN200780030981A CN101507220A CN 101507220 A CN101507220 A CN 101507220A CN A2007800309812 A CNA2007800309812 A CN A2007800309812A CN 200780030981 A CN200780030981 A CN 200780030981A CN 101507220 A CN101507220 A CN 101507220A
Authority
CN
China
Prior art keywords
transmission mode
transmission
sfn
subframe
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2007800309812A
Other languages
Chinese (zh)
Other versions
CN101507220B (en
Inventor
D·P·马拉蒂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/841,771 external-priority patent/US8174995B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CN101507220A publication Critical patent/CN101507220A/en
Application granted granted Critical
Publication of CN101507220B publication Critical patent/CN101507220B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

In accordance an aspect, a method for a wireless communication system, determining a location in time of a sub-frame when SFN transmission for data will occur, determining a first transmission pattern and a second transmission pattern for reference signals, wherein the transmission patterns indicate the symbols and tones of a sub-frame to use for reference signals, selecting for use, between the first transmission pattern and second transmission pattern for reference signals depending on whether SFN data will be transmitted in the sub-frame, and broadcasting information about the selected transmission pattern prior to use thereof.

Description

The method and apparatus that is used for flexible pilot pattern
The cross reference of related application
The title that the application requires on August 21st, 2006 to submit to is the U.S. Provisional Patent Application No.60/839 of " METHOD ANDAPPARATUS FOR FLEXIBLE PILOT PATTERN ", 357 rights and interests, and the full text of above-mentioned application is incorporated this paper into way of reference.
Technical field
Following description relates generally to radio communication, and relating more specifically to provides a kind of mechanism with flexible pilot pattern in OFDM (OFDM) system.
Background technology
Wireless communication system is disposed widely provides various types of Content of Communication, for example voice, data or the like.Typical wireless communication system can be a multi-address system, and it can be supported and a plurality of telex networks by sharing available system resource (for example bandwidth, transmitting power etc.).The example of above-mentioned multi-address system can comprise code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, 3GPP LTE system, OFDM (OFDM), local formula frequency division multiplexing (LFDM), OFDM (OFDMA) system or the like.
In wireless communication system, a Node B (or base station) can send data to subscriber equipment (UE) and/or receiving data from subscriber equipment on up link on the down link.Down link (or forward link) is meant the communication link from the Node B to the subscriber equipment, and up link (or reverse link) is meant the communication link from the subscriber equipment to the Node B.Node B also can send control information (for example distribution of system resource) to subscriber equipment.Similarly, the subscriber equipment Node B that can send control information to support the transfer of data on the down link, perhaps is used for other purpose.
Use multicast or broadcast transmitted pattern in the prior art system, Node B can send to a plurality of subscriber equipmenies that move in this system.The higher enhancing data rate of multicast or broadcasting (putting multiple spot) transmission being operated as single frequency network (SFN) and utilizing this SFN transmission to provide will be feasible.SFN allows one or more neighbor cells to send identical content on one of down link identical subchannel.Yet when other non-data message also needed to be sent out, if the entire portion of bandwidth is used on the down link, the SFN transmission may not be efficient.
Summary of the invention
Introduce the simplified summary of one or more embodiment below so that basic comprehension to these embodiment is provided.The extensive overview of the not all contemplated embodiments of this summary also is not used in key component that identifies all embodiment and the scope of describing any or all embodiment.Its unique purpose is to introduce some notions of one or more embodiment with a kind of reduced form, as back preorder in greater detail.
According to an aspect, a kind of method that is used for wireless communication system comprises: determine the time location to the SFN of data transmission of will taking place in subframe; Be identified for first transmission mode and second transmission mode of reference signal, wherein, the symbol that is used for reference signal and the tone of above-mentioned transmission mode indication subframe; Based on whether will in this subframe, sending the SFN data, between this first transmission mode that is used for reference signal and second transmission mode, select the transmission mode that to use; And before using selected transmission mode, broadcasting is about the information of selected transmission mode.
According to an aspect, a kind of method that is used for wireless communication system comprises: determine the time location to the SFN of data transmission of will taking place in subframe; Be identified for sending first transmission mode of reference signal, wherein, this first transmission mode is included in the position of the tone that is allocated for the transmission reference signal in this subframe and the position of symbol; Before using this first transmission mode, broadcasting is about the information of this first transmission mode.
According to an aspect, a kind of method that is used for wireless communication system comprises: use first transmission mode, wherein, this first transmission mode comprises the tone that is used for sending according to single frequency network (SFN) transmission plan one group of data; Use second transmission mode, wherein, this second transmission mode comprises the tone that is used to send reference signal; And before using this first and second transmission mode, broadcasting is about the information of this first and second transmission mode.
According to an aspect, a kind of method that is used for wireless communication system comprises: be received in the time location to the SFN of data transmission of will taking place in the subframe; And receive information about first transmission mode, wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used for sending according to single frequency network (SFN) transmission plan one group of data.
According to an aspect, a kind of method that is used for wireless communication system comprises: be received in the time location to the SFN of data transmission of will taking place in the subframe; And receive information about first transmission mode, wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used to send reference signal.
For reaching above-mentioned and relevant target, comprised the feature of fully describing and particularly pointing out in the claims hereinafter among one or more embodiment.Following description and accompanying drawing sets forth in detail some exemplary aspect of one or more embodiment.These aspects are illustrative, and the principle of various embodiment can be used some aspects in the various aspects, and described embodiment is intended to comprise all these aspects and their equivalent aspect.
Description of drawings
Fig. 1 shows the wireless communication system of the various aspects of illustrating according to this paper.
Fig. 2 has described the communicator of the example of using in wireless communications environment.
Fig. 3 shows a kind of sub-district specific (cell specific) pilot transmission pattern.
Fig. 4 shows a kind of transmission mode of the SFN of having transmission.
Fig. 5 shows a kind of transmission mode that has the SFN transmission on each symbol of subframe.
Fig. 6 shows a kind of frame structure that uses various downlink transmission.
Fig. 7 shows and is used to broadcast the exemplary method that selected down link (DL) transmits the indication of (TX) pattern.
Fig. 8 shows and is used to receive the exemplary method that selected down link (DL) transmits the indication of (TX) pattern.
Fig. 9 has described can provide the example of feedback to access terminal to communication network.
Figure 10 shows the example base station that can be used with wireless network environment disclosed herein.
Figure 11 has described the example system that feedback can be provided to wireless communications environment according to one or more aspects.
Figure 12 has described the example system that can use the flexible transmission pattern technology according to one or more aspects.
Figure 13 has described the example system that can use the flexible transmission pattern technology according to one or more aspects.
Figure 14 has described the example system that can use the flexible transmission pattern technology according to one or more aspects.
Figure 15 has described the example system that can use the flexible transmission pattern technology according to one or more aspects.
Embodiment
Describe various aspects below in conjunction with accompanying drawing, similar reference number is used to indicate similar key element in the full text.Following description is used to explain, and many specific detail of illustrating are used to provide the thorough to one or more aspects.Obviously, can not have under the situation of these specific detail to implement aspect these.In other example, show known structure and equipment with the form of structure chart, to be convenient to describe one or more aspects.
In addition, various aspects of the present disclosure are described below.Significantly, the instruction of this paper can realize that any ad hoc structure disclosed herein and/or function are only just representational with various forms.Those skilled in the art can understand based on the instruction of this paper, and an aspect disclosed herein can be independent of any others and be implemented, and in these aspects two or more can make up in every way.For example, the aspect arbitrarily that can use this paper to illustrate realizes a device and/or implements a kind of method.In addition, can use other structure and/or function except one or more aspects that this paper illustrates to realize a device and/or implement a kind of method.As an example, many methods described herein, equipment, system and device provide SFN data sync transmission and the ad-hoc that retransmits or not planning/semicircular canal draw in the wireless communications environment of configuration and be described.Those skilled in the art can understand, and similar techniques can be applied to other communication environment.
The term that uses among the application " assembly ", " system " or the like are intended to refer to the entity relevant with computer, and it can be hardware, software, executory software, firmware, middleware, microcode and/or any their combination.For example, assembly can but the thread, program and/or the computer that are not restricted to the process on processor, moved, processor, object, can carry out, carry out.One or more assemblies can reside in the process and/or thread of execution, and assembly can be positioned on the computer and/or be distributed among two or more computers.And these assemblies can be carried out from various computer-readable mediums, store various data structures on these computer-readable mediums.For example, according to signal (for example with one or more packets, data from an assembly, this assembly is by the network and the operation of other system interaction of another component interaction operation and/or leap such as the Internet in this signal and the local system, in the distributed system), these assemblies can communicate by the mode of this locality and/or teleprocessing.In addition, those skilled in the art can understand, and can rearrange the assembly of system described herein and/or replenish other assembly realizing described various aspects, target and benefit etc., and be not restricted to the accurate configuration that shows in the given accompanying drawing.
In addition, various aspects described herein are relevant with subscriber station.Subscriber station also can be known as system, subscriber unit, travelling carriage, mobile radio station, distant station, remote terminal, accesses terminal, user terminal, user agent, user's set or subscriber equipment.Subscriber station can be that cell phone, cordless telephone, session initiation protocol (SIP) phone, wireless local loop (WLL) are stood, PDA(Personal Digital Assistant), the handheld device with wireless connections ability or other treatment facility, and this other treatment facility is connected to radio modem or makes it can carry out the similar device of radio communication with treatment facility.
In addition, various aspects described herein or feature may be implemented as the goods of a kind of method, device or use standardization program and/or engineering.Term used herein " goods " be intended to comprise can access from any computer readable device, carrier or medium computer program.For example, computer-readable medium can include, but are not limited to magnetic storage apparatus (for example hard disk, floppy disk, tape), CD (for example fine and close laser disc (CD), digital multi-purpose CD (DVD) etc.), smart card and flash memory device (for example card, rod, key driving (key drive) etc.).In addition, various storage medium described herein can represent that one or more equipment and/or other are used for the machine readable media of stored information.Various other media that term " machine readable media " can include but not limited to wireless channel and can store, comprises and/or carry instruction and/or data.
In addition, word used herein " example " means example, an example or illustrates.Any aspect or design that this paper describes as " example " should not be considered to preferred or be superior to others or design.But, use " example " this speech to be intended to introduce notion in a concrete mode.The term that uses among the application " or " be intended to represent non-exclusive " or ", rather than exclusiveness " or ".Also be, maybe can be clear and definite from context unless specify, otherwise " X uses A or B " is used in reference to any natural non-exclusive arrangement, just, if X uses A, X to use B or X to use A and B, " X uses A or B " is satisfied with aforementioned any example so.In addition, article " " ordinary solution that uses in the application and the appended claim is interpreted as " one or more ", unless specify or can clearly be designated as an independent form from context.
Term used herein " deduction " is often referred to the process of from a group observations that obtains via incident and/or data reasoning or inference system, environment and/or User Status." deduction " for example can be used in specific context of sign or action, perhaps can generate the probability distribution for state." deduction " can be probability, also, to the calculating of the probability distribution of care state based on consideration to data and incident." deduction " can also refer to be used for form from one group of incident and/or data the technology of higher level incident." deduction " causes from new incident or the action of the event data of one group of incident that observes and/or storage structure, and no matter whether these incidents are closely related in time, and no matter these incidents and data whether from one or several incident and data source.
Technology described herein can be used for various cordless communication networks, for example code division multiple access (CDMA) network, time division multiple access (TDMA) network, frequency division multiple access (FDMA) network, OFDM (OFDMA) network, single-carrier frequency division multiple access (SC-FDMA) network etc.Term " network " and " system " often exchange and use.Cdma network can be realized for example wireless technology of general land wireless access (UTRA), cdma2000 or the like.UTRA comprises Wideband Code Division Multiple Access (WCDMA) (W-CDMA) and low spreading rate (LCR).Cdma2000 covers IS-2000, IS-95 and IS-856 standard.The TDMA network can be realized for example wireless technology of global system for mobile communications (GSM).The OFDMA network can be realized UTRA (E-UTRA), IEEE 802.11, IEEE802.16, IEEE 802.20, the Flash of for example evolution
Figure A200780030981D00191
Deng wireless technology.UTRA, E-UTRA and GSM are the parts of universal mobile telecommunications system (UMTS).Long Term Evolution (LTE) is to use the UMTS version that is about to issue of E-UTRA.Be called in name in the document of " third generation partner program " tissue (3GPP) and described UTRA, E-UTRA, GSM, UMTS and LTE.In the document that " third generation partner program 2 " (3GPP2) organized cdma2000 has been described.These various wireless technologys and standard are being known in the art.For clarity sake, some aspect that is used for the LTE technology has been described below, many local use the during the LTE term is described below.
Single-carrier frequency division multiple access (SC-FDMA) has used single-carrier modulated and frequency-domain equalization technology.SC-FDMA has and OFDMA system similar performance and identical in fact overall complexity.The SC-FDMA signal has lower peak-to-average power than (PAPR) because of intrinsic single carrier structure.SC-FDMA has attracted many attentions, and particularly in uplink communication, lower PAPR is a significant benefit to portable terminal aspect transmit power efficiency.Current it be a kind of working hypothesis of up link multiple access scheme that is used for the UTRA of 3GPP Long Term Evolution (LTE) or evolution.
Fig. 1 shows a wireless communication system 100, and it has a plurality of base stations 110 and a plurality of terminal 120, for example can use this wireless communication system in conjunction with one or more aspects.The fixed station that the base station normally communicates with terminal also can be called as access point, Node B or certain other term.Each base station 110 provides the communication to a specific geographical area to cover, and illustrates three geographic areas, is labeled as 102a, 102b and 102c.Term " sub-district " can refer to base station and/or its overlay area according to the context of its use.In order to improve power system capacity, the overlay area of a base station can be divided into a plurality of littler zones (for example the sub-district 102a among Fig. 1 has three littler regional 104a, 104b and 104c).Each littler zone can be by base transceiver subsystem (BTS) service separately.Term " sector " can refer to BTS and/or its overlay area according to its employed context.For the sub-district of a sectorization, the BTS of these all sectors, sub-district typically is positioned at the base station of this sub-district jointly.Transmission technology described herein can be used to use sectorization the sub-district system and use the not system of the sub-district of sectorization.For the sake of simplicity, the term " base station " in describing below refers generally to the fixed station that generation serves the fixed station of a sector and serve a sub-district.
Terminal 120 typically is distributed in the whole system, and each terminal can be fixing or move.Terminal also can be called as travelling carriage, subscriber equipment, user's set or certain other term.Terminal can be wireless device, cell phone, PDA(Personal Digital Assistant) and wireless modem card etc.Each terminal 120 can communicate with zero, one or more base station on descending and up link at any given time.This down link (or forward link) is meant the communication link from the base station to the terminal, and this up link (or reverse link) is meant the communication link from terminal to base station.
For centralized architecture, system controller 130 is coupled to base station 110 and provides coordination and control to base station 110.For distributed structure/architecture, base station 110 can communicate with one another as required.Transfer of data on the forward link is to access terminal from an access point to, and it transmits with the maximum data rate of this forward link and/or communication system support or the speed that approaches this maximum data rate.Other channel of forward link (for example control channel) can be to send to one from a plurality of access points to access terminal.The data communication of reverse link can be from one or more access points that access terminal.
Fig. 2 shows according to the ad-hoc of various aspects or the wireless communications environment 200 drawn of planning/semicircular canal not.System 200 can be included in the one or more base stations 202 in one or more sectors, and this base station receives, sends, retransmits wireless communication signals mutually and/or receives, sends, retransmits wireless communication signals with one or more mobile devices 204.As shown in the figure, each base station 202 can provide communication to cover to a specific geographical area, illustrates four geographic areas, is labeled as 206a, 206b, 206c and 206d.Each base station 202 can comprise a transmitter chain and a receiver chain, as well known for one of skill in the art, it comprises respectively separately and a plurality ofly transmits and receives related assembly (for example processor, modulator, multiplexer, demodulator, demodulation multiplexer, antenna or the like) with signal.Mobile device 204 can be that for example cell phone, smart phone, laptop computer, handheld communication devices, hand-held computing device, satelline radio, global positioning system, PDA and/or any other are used for the suitable equipment of communication on wireless network 200.System 200 can use so that a pilot frequency mode flexibly is provided in conjunction with various aspects described herein.
Technology described herein can be used for various wireless communication systems, for example code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), OFDM (OFDMA) and single-carrier frequency division multiple access (SC-FDMA) system.Term " system " and " network " often exchange and use.Cdma system can be realized for example wireless technology of general land wireless access (UTRA), cdma2000 or the like.UTRA comprises Wideband Code Division Multiple Access (WCDMA) (W-CDMA) and low spreading rate (LCR).Cdma2000 covers IS-2000, IS-95 and IS-856 standard.Tdma system can be realized for example wireless technology of global system for mobile communications (GSM).The OFDMA system can realize UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE802.20, the Flash of for example evolution
Figure A200780030981D0021160322QIETU
Deng wireless technology.These various wireless technologys and standard are being known in the art.UTRA, E-UTRA and GSM are the parts of universal mobile telecommunications system (UMTS).Long Term Evolution (LTE) is to use the UMTS version that is about to issue of E-UTRA.Be called in name in the document of " third generation partner program " tissue (3GPP) and described UTRA, E-UTRA, GSM, UMTS and LTE.In the document that " third generation partner program 2 " (3GPP2) organized cdma2000 has been described.For clarity sake, some mode of the technology that is used for the LTE ul transmissions has been described below, many local use the during the 3GPP term is described below.
LTE uses OFDM (OFDM) on down link, use single carrier frequency division multiplexing (SC-FDM) on up link.OFDM and SC-FDM are divided into a plurality of (N) orthogonal sub-carriers with system bandwidth, and it also is commonly called tone (tone), frequency range (bin) etc., and each subcarrier can be modulated with data.Usually, modulation symbol sends with OFDM at frequency domain, sends with SC-FDM in time domain.For LTE, the spacing between the adjacent sub-carrier can be fixed, and the sum of subcarrier (N) can depend on system bandwidth.In a design, for the system bandwidth of 5MHz, N=512, for the system bandwidth of 10MHz, N=1024 is for the system bandwidth of 20MHz, N=2048.Usually N can be any integer value.
The LTE downlink transmission scheme is divided (for example 10 milliseconds of radio frames) by radio frames (radio frame).Each frame comprises a pattern (pattern) that is made of frequency (for example subcarrier) and time (for example OFDM symbol).These 10 milliseconds of radio frames are divided into a plurality of 0.5 millisecond of adjacent subframe (be also referred to as subframe or time slot, below exchange and use).Each subframe comprises a plurality of Resource Block, and wherein each Resource Block is made up of one or more subcarriers and one or more OFDM symbol.One or more Resource Block can be used to transmit data, control information, pilot tone (being also referred to as reference signal) or any their combination.
In order to realize the most effective use SFN and sub-district specific (for example clean culture or multicast) scheme, the distinct methods that is used for multiplexing SFN and sub-district special pilot in down link has been described herein.A sub-district special pilot sends with FDM, and carries out scrambling with a sub-district specific scramble codes.Use FDM to operate the frequency reuse that allows greater than 1, wherein the pilot tones from the minority adjacent cell does not conflict mutually.Produced improved channel estimating like this, especially at cell edge.
Fig. 3 shows the sub-district special pilot transmission mode 300 according to an example, and it is used for the subframe of downlink transmission.According to an example, this sub-district special pilot pattern is used for the subframe of the radio frames be made up of time cycle 360 and frequency bandwidth 362.In the pilot frequency mode of this example, all tones of symbol 306 are assigned to send pilot frequency information.According to this example, can not conflict in maximum six sub-districts, and this is to use different tones to finish owing to their pilot tone in a symbol period sends.For example, the pilot frequency information of sub-district 0 uses tone 304,320 and 332 to send, the pilot frequency information of sub-district 1 uses tone 310,322 and 334 to send, the pilot frequency information of sub-district 2 uses tone 312,324 and 336 to send, the pilot frequency information of sub-district 3 uses tone 314,326 and 338 to send, the pilot frequency information of sub-district 4 uses tone 316,328 and 340 to send, and the pilot frequency information of sub-district 5 uses tone 318,330 and 342 to send.This pattern can repeat several symbol periods, for example symbol period 352 and 354.For the residue tone in the subframe, transmitter can send non-pilot frequency information.According to an aspect, sub-district 0 can send data or out of Memory (for example non-pilot frequency information) on sub-district 1,2,3,4 and 5 is used for sending the tone of pilot tone.Therefore, lower interference power spectrum density (PSD) and the higher signal to noise ratio (snr) of these pilot tones experience, this causes improved channel estimating.Depend on system configuration, still less or more sub-districts can designatedly not clash.
Fig. 4 shows the transmission mode 400 with SFN transmission according to an aspect, and it is used for the subframe of downlink transmission, and wherein sub-district special pilot and SFN data (for example data that send with the SFN transmission plan) are multiplexed on the same sub.According to an example, this transmission mode is used for the subframe of the radio frames be made up of time cycle 460 and frequency bandwidth 462.In this example modes, all tones of symbol 406 are assigned to send pilot frequency information.In this example, six sub-districts of not conflicting have each other been shown, by reaching this purpose for tone of each cell allocation sends pilot frequency information.For example, the pilot frequency information of sub-district 0 uses tone 404,420 and 432 to send, the pilot frequency information of sub-district 1 uses tone 410,422 and 434 to send, the pilot frequency information of sub-district 2 uses tone 412,424 and 436 to send, the pilot frequency information of sub-district 3 uses tone 414,426 and 438 to send, the pilot frequency information of sub-district 4 uses tone 416,428 and 440 to send, and the pilot frequency information of sub-district 5 uses tone 418,430 and 442 to send.This pattern can repeat several symbol periods, for example symbol period 452 and 454.The designated SFN of the being used for transmission of residue tone (showing with shade) at Fig. 4.In one aspect, when SFN transmission and the specific transmission in sub-district were multiplexed in the same sub, for not allowing conflicting sub-district, sub-district specific sub-frame, frequency reuse may be not more than 1, and this is because the characteristic that SFN transmits causes.So, in this example, sub-district 0 can not send the SFN transmission on sub-district 1,2,3,4 and 5 is used for sending the tone of pilot frequency information.Therefore, if do not allow mutual conflict from the pilot tone of different districts, for a given sub-district, non-pilot tones can not be used for the SFN data so.Yet sub-district 0 can send out of Memory, for example control information, distribution, empty tone (making that be identical in the euphonic frequency reuse pattern of this sky with frequency reuse pattern on data tones) or any non-pilot tone and non-SFN data.So, the transmission mode of sub-district 0 can comprise: the transmission of the pilot tones that repeats based on the number that is designated as the sub-district that avoids conflict, for example tone 404,420 and 432.This transmission mode may further include: be used for carrying out on the tone of pilot transmission non-pilot tone and non-SFN transmission in other sub-district, for example, tone 410,412,414,416,418,422,424,426,428,430,434,436,438,440 and 442.Residue tone in this example subframe will be used to the SFN transmission.
Fig. 5 has shown down link (DL) transmission (TX) pattern 500 (being also referred to as the SFN+CS transmission mode) according to another aspect, and wherein this sub-district special pilot and SFN data (for example using the data of SFN transmission plan transmission) are multiplexed on the same subframe.According to an example, this transmission mode is used for the subframe of the radio frames be made up of time cycle 560 and frequency bandwidth 562.According to an aspect, all sub-districts in the system are required to use the tone of appointment to be used for pilot transmission (being shown as clean culture), empty tone or any their combination.According to the transmission mode of this example, be defined in subcarrier 504,520 and 532 and the Resource Block at symbol 506,552 and 554 places be used for carrying out pilot information transmission by all sub-districts in the system.According to another aspect, can use a transmission mode (not shown) to distribute pilot tones, the pilot tones that is distributed does not conflict with the pilot tones that use other sub-district.To remain tone assignment and give the SFN transmission plan, be used to transmit content to subscriber equipment.Therefore, the pilot tone of each sub-district allows conflict, and allows to carry out on a bigger tone sets SFN transmission.
For a pilot frequency mode scheme flexibly, specifying the tone that is used for pilot transmission can be adjacent in frequency, time or any their combination.So, in one aspect in, all pilot tones that SFN+CS transmission mode has are adjacent on frequency.In one aspect of the method, all pilot tones of having of SFN+CS transmission mode are adjacent in time.In aspect another, all tones that the appointment that SFN+CS transmission mode has is used for sub-district special pilot transmission are adjacent and accumulate in the frequency bandwidth top of subframe on frequency, for example all pilot transmission tones symbol 506,552 and 554 570 places adjacent.In one aspect of the method, all tones that the appointment that SFN+CS transmission mode has is used for sub-district special pilot transmission are adjacent and accumulate in the frequency bandwidth middle part of subframe on frequency, and for example all pilot transmission tones are adjacent at 572 places of symbol 506,552 and 554.In one aspect of the method, all tones that the appointment that SFN+CS transmission mode has is used for sub-district special pilot transmission are adjacent and accumulate in the frequency bandwidth bottom of subframe on frequency, and for example all pilot transmission tones are adjacent at 574 places of symbol 506,552 and 554.Should be noted that, depend on system, is not that all sub-districts can be repeated pilot transmission in frequency with on the time.Therefore, for example, sub-district can be only sends pilot tone on the tone by subcarrier 504 appointments of symbol 506,552 and 554, or only sends pilot tone on the subcarrier 504,520 and 532 of symbol period 552.
Fig. 6 has shown a frame structure 600, and it uses above-described downlink transmission mode during system operation.According to an aspect, use one or more patterns of from one group of downlink transmission mode, selecting to send the sub-district special pilot.For example, in the time cycle 602, send four subframes 604,606,608 and 610.In one aspect, for subframe 604, first pattern (for example, describe as Fig. 3, the sub-district certain heavy is used greater than 1) or second pattern (for example, describe as Fig. 5, the sub-district is specific+distortion of SFN and all these patterns) can be selected by system.For 606,608 and 610 subframes, this system can use first or second pattern.Thereby in not having the subframe of SFN transmission, sub-district special pilot pattern is corresponding to greater than 1 frequency reuse, and in other subframe, this pattern is corresponding to the frequency reuse that equals 1.
Each sub-district comprises a mechanism of selecting downlink transmission mode, and this mechanism is selected downlink transmission mode based on necessary transfer rate of all conditions, data-rate requirements, some content of system or the like.Can be periodically to use the SFN+CS transmission mode.In this case, in each sub-district periodically broadcasting be selected to use the distribution of the subframe of SFN+CS transmission mode.In case selected downlink transmission mode, (for example using the signal of broadcast channel to send) information about selected downlink transmission mode will be broadcasted in all sub-districts in the system.When the downlink transmission pattern will be used by the sub-district, this can be by finishing to a subscriber equipment transmission designator (one or more bit) and subframe.This downlink transmission mode can be only effective to a subframe, and wherein this designator must retransmitted signal or broadcasting before using selected downlink transmission mode.Alternatively, one or more subframes can be assigned to use the downlink transmission mode of selection.In this case, about will use SFN+CS transmission mode for example distribute the information of subframe will be by Cell Broadcast CB to subscriber equipment.
In one aspect, above-described downlink transmission mode can identify with identifier.In order to reduce expense, only to the subframe numbers of subscriber equipment broadcast transmitted mode identifier and appointment.Subscriber equipment can obtain the correct treatment related with transmission mode from memory then, and uses this method to handle the transmission that receives of this given sub-frame.
With reference to the method for Fig. 7-8 about a mechanism, the indication of SFN+CS transmission mode is used and broadcasted to this mechanism, and this SFN+CS transmission mode is assigned with the downlink transmission as a subframe.Yet, simple and clear for what illustrate, this method is illustrated and is described as a series of operation, be appreciated that and understand, this method should not be subjected to the restriction of order of operation, takes place and/or shows with this paper and other operation of describing takes place simultaneously with different order because of the theme that certain operations can be as requested.For example, it should be appreciated by those skilled in the art that and understand that a method can alternatively be represented as a series of state or incidents of being mutually related, for example in a state diagram.In addition, theme as requested is not to need to use all illustrated operations to realize a method.
Specifically with reference to figure 7, it has described an exemplary method 700, and this method can be broadcasted the indication of the downlink transmission mode of selecting according to an aspect in wireless communication system.Method 700 can make that (for example the node base station of an enhancing, eNode B, access point (AP), base station or similar device) sends the one or more terminal equipments (for example subscriber equipment, UE, AT or similar device) that are indicated to the cordless communication network from a sub-district.This method starts from 702, when having determined whether to downlink transmission use SFN transmission.In one aspect, the sub-district need periodically to determine whether the SFN transmission to send content or whether receive that from system a request brings into use the SFN transmission with the data rate that strengthens.In one aspect, the sub-district receives the time location to the SFN transmission of data of should taking place the indication of carrying out the SFN transmission and the subframe from system.If need to determine the SFN transmission, this method execution block 704,706 and 708.Otherwise at piece 720, this method continues to use the transmission mode of acquiescence, first pattern of for example describing among Fig. 3.At piece 704, a SFN transmission mode is determined in the sub-district from one or more transmission modes, and each has indicated being used for reference signal (for example pilot data) and being used to use the SFN transmission plan to send the symbol and the tone of data in the subframe in these transmission modes.In case selected transmission mode, the sub-district is the selected pattern of the sub-frame allocation of appointment.Depend on system, this method is selected a SFN transmission mode from the tabulation of available several SFN transmission modes.For example, the SFN+CS transmission mode of describing among Fig. 5 above or the distortion of this pattern (for example having pattern) based on the gathering of frequency and/or time or staggered pilot tones.After selecting a transmission mode, this method proceeds to piece 706.706, the selected downlink transmission mode information of Cell Broadcast CB and to all subscriber equipmenies of this sub-district service effective subframe of appointment all.According to system's needs, this method can be broadcasted this indication in advance, and allows all subscriber equipmenies to receive this indication before the downlink transmission mode of using this selection.This indication can be a predetermined transmission mode identifier or about the more details information of selected transmission mode.At piece 708, this method uses the downlink transmission mode of selecting as the subframe of appointment to send data (for example content).
With reference to figure 8, it has described an exemplary method 800, and this method receives the indication of selected downlink transmission mode in wireless communication system according to an aspect.Method 800 can make the sub-district (for example the node base station of an enhancing, eNode B, access point (AP), base station or similar device) from a cordless communication network receive an indication.According to an aspect, at piece 802, this method receives an indication on the forward link, and the subframe of appointment is handled in this indication about the SFN transmission mode (for example SFN+CS transmission mode) of using appointment.At piece 804, this method is based upon the specified SFN transmission mode of given sub-frame, begins the processing to receive transmission.
The example that Fig. 9 has described according to one or more aspects accesses terminal 900, and it can be provided to the feedback of communication network.Accessing terminal 900 comprises receiver 902 (for example antenna), and receiver 902 received signals are also carried out specific operation (for example filtering, amplification, down-conversion etc.) to the signal that is received.Especially, receiver 902 can also receive a service dispatch table, a related dispatch list etc., the service that is distributed in one or more of a transmission of this service dispatch table definition assignment period, this association dispatch list is with downlink resource blocks and be used to provide the block of uplink resources of feedback information described herein to associate.Receiver 902 can comprise demodulator 904, demodulator 904 can demodulate reception to symbol and they be provided to processor 906 evaluate.Processor 906 can be one and be devoted to analyze the information that is received by receiver 902 and/or generate the information processing device that is sent by transmitter 916.In addition, processor 906 can be the control processor of one or more assemblies of 900 that accesses terminal, and/or can be the information that receives by receiver 902 of an analysis, generate the access terminal processor of one or more assemblies of 900 of the information that sends by transmitter 916 and control.In addition, just as described herein, processor 906 can execute instruction, with the uplink resource of explanation receiver 902 receptions and the correlation between the down-chain resource, the downlink block that identification does not receive, or generate and to be used for signalisation these do not receive the feedback message (for example bitmap) of piece, or analyze a hash function to determine the suitable uplink resource in a plurality of uplink resources.
Accessing terminal 900 can comprise memory 908 in addition, and it operatively is coupled to processor 906 and can stores to be sent, that receive or similar data.Memory 908 can be stored the information related with dispatching down link resource, is used to estimate aforesaid agreement, and be used to discern a transmission not receiving unit, determine the transmission that can't decipher, send the agreement of feedback message to access point, or the like.
Can understand data storage described herein (for example memory 908) can be volatibility or nonvolatile memory, perhaps can comprise volatibility and nonvolatile memory.Explanation is and unrestricted as an example, and nonvolatile memory can comprise read-only memory (ROM), programmable read-only memory (prom), EPROM (EPROM), EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) or flash memory.Volatile memory can comprise random-access memory (ram), and it is as the cache of outside.As an example the explanation and unrestricted, random access memory ram has many available forms, for example synchronous random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), Double Data Rate synchronous DRAM (DDR SDRAM), enhancement mode synchronous DRAM (ESDRAM), synchronization links dynamic random access memory (SLDRAM) and direct type Rambus RAM (DRRAM).The memory 908 of this thematic system and method is intended to include but not limited to the memory of these and any other suitable type.
Receiver 902 further operatively is coupled to multichannel antenna 910, and it can be received in one or more other downlink transmission resources pieces and the correlation of being dispatched between the uplink transmission resource piece (for example making provides a plurality of negative responses (NACK) or affirmative acknowledgement (ACK) message in a bitmap response).Multiplex processor 906 can comprise a multidigit bitmap in a feedback message that ACK or NACK message is provided, this ACK or NACK message indicate in first downlink block and the one or more other downlink block each to be received or not to be received on an independent uplink resource.In addition, computation processor 912 can receive a feedback probability function, and as described herein, if downlink transmission resources piece or related with it data are not received, this function restriction is by 900 probability that feedback message is provided that access terminal.Especially, if a plurality of equipment is reported obliterated data just at the same time, above-mentioned probability function can be used for reducing and disturb.
Accessing terminal 900 further comprises modulator 914 and transmitter 916, and this transmitter 916 transmits a signal to such as base station, access point, another accesses terminal, remote agent or the like.Although signal generator 910 is described to separate with processor 906 with designator evaluator 912, can understand, above-mentioned signal generator 910 and designator evaluator 912 can be the part of processor 906 or the part of a plurality of processor (not shown)s.
Figure 10 shows a system 1000, and it can provide the feedback of relevant transmission data of losing for the LTE network.System 1000 comprises base station 1002 (for example access point etc.), this base station has receiver 1010, its by a plurality of reception antennas 1006 from one or more mobile device 1004 received signals, this base station has transmitter 1022, and it sends data to one or more mobile devices 1004 by transmitting antenna 1008.Receiver 1010 can be from reception antenna 1006 reception information, and can comprise a signal receiver (not shown) further, and this signal receiver receives and the relevant feedback data of packet unreceived or can't decipher.In addition, receiver 1010 operatively is associated with the demodulator 1012 that is used for the information that demodulate reception arrives.The processor 1014 that is coupled to memory 1016 is analyzed the symbol after the demodulation, these memory 1016 storages: the information relevant with the correlation of uplink resource and down-chain resource, provide the dynamic and/or static relevant information of correlation from a network, and data that will send or the data that receive from mobile device 1004 (perhaps different base station (not shown)s), and/or any various operations adequate information relevant that other illustrates with execution herein with function.
Processor 1014 further is coupled to an association processor 1018, and this association processor 1018 can during distribution be dispatched the downlink transmission resources piece that is used for multicast or broadcasting service and the correlation between the uplink transmission resource piece.In addition, association processor 1018 can further be dispatched one or more other uplink transmission resource pieces and the correlation between this downlink transmission resources piece, so that can receive a plurality of feedback messages to this down-chain resource.As a result of, can determine the relative number of the feedback message relevant with this down-chain resource.In addition, association processor 1018 can be dispatched the correlation between a plurality of downlink transmission resources pieces of being used for multicast or broadcasting service and the uplink transmission resource, so, an independent bitmap that is included in the feedback message can be this a plurality of downlink transmission resources piece indication ACK or nack message.
Association processor 1018 can be coupled to computation processor 1020, and this computation processor 1020 generates a probability factor, and this probability factor can limiting terminal equipment provides the possibility of feedback message.Base station 1002 can use this probability factor to reduce feedback interference from a plurality of terminal equipments.In addition, computation processor 1020 can generate the hash function that is sent by base station 1002, the specific uplink transfer resource that this hash function can each indication in a plurality of terminal equipments uses when submitting feedback message to.Sign or the piece customizing messages or their combination of the service that the indication of hash function can be at least in part used based on the hash of the access kind of each terminal equipment, each terminal iidentification, by each terminal equipment.
In addition, computation processor 1020 can be coupled to ordering processor 1021, and this ordering processor can be determined the number of the feedback message that receive relevant with the downlink transmission resources piece.For example, if a downlink transmission resources piece is relevant with a plurality of uplink transmission resource (for example, by above-described association processor 1018 these correlations of scheduling), base station 1002 can receive two or more feedback messages for this down-chain resource.Therefore ordering processor 1021 can discern any feedback message corresponding to this downlink block, and which can retransmit priority for this downlink block indication.In addition, this ordering processor 1021 can be selected between a plurality of downlink transmission resources pieces of repeating transmission at least in part based on the number of the feedback message relevant with each downlink transmission resources piece that receives.
With reference now to Figure 11,, on down link,, sends 1110 receptions of (TX) data processor, formatting, (or sign map) traffic data of encoding, interweave and modulate, and modulation symbol (" data symbol ") is provided at access point 1105.Symbol modulator 1115 receives and deal with data symbol and frequency pilot sign, and a symbols streams is provided.Symbol modulator 1115 multiplex datas and frequency pilot sign also are provided to transmitter unit (TMTR) 1120 with them.Each sends symbol can be that a data symbol, a frequency pilot sign or a value are zero signal.Can be in each symbol period pilot symbol transmitted continuously.Frequency pilot sign can be by frequency division multiplexing (FDM), OFDM (OFDM), Time Division Multiplexing, frequency division multiplexing (FDM) or code division multiplexing (CDM).
TMTR 1120 receives and changes this symbols streams is one or more analog signals, the down link signal that the step of going forward side by side joint (for example amplification, filtering and up-conversion) this analog signal is adapted at transmitting on the wireless channel with generation.This down link signal is sent to terminal by antenna 1125 subsequently.In terminal 1130, the signal that antenna 1135 receives these down link signals and reception is provided is to receiver unit (RCVR) 1140.Signal and the signal after this adjusting of digitlization that receiver unit 1140 is regulated (for example filtering, amplification and down-conversion) this reception obtain sampling.Symbol demodulator 1145 demodulation and frequency pilot sign that reception is provided are used for channel estimating to processor 1150.Symbol demodulator 1145 further receives from processor 1150 to be estimated the frequency response of down link, the data symbol that receives is carried out data demodulates estimate (it is the estimation that sends data symbol) to obtain data symbol, and provide this data symbol to estimate reception data processor 1155, receive data processor 1155 demodulation (for example symbol de-maps), deinterleaving and decode the traffic data of this data symbol estimation to recover to send.Symbol demodulator 1145 is that difference is opposite with the processing that receives data processor 1155 execution and in the Symbol modulator 1115 of access point 1105 and the processing of transmission data processor 1110.
On up link, send data processor 1160 amount of managing business data and data symbol is provided.Symbol modulator 1165 receives and multiplex data symbol and frequency pilot sign, carries out modulation, and a symbols streams is provided.Transmitter unit 1170 receives and handles this symbols streams then to generate uplink signal, by antenna 1135 this uplink signal is sent to access point 1105.
At access point 1105, come the uplink signal of self terminal 1130 to be received and be received unit 1175 processing to obtain sampling by antenna 1125.Symbol demodulator 1180 is handled this sampling then and is estimated for up link provides the frequency pilot sign of reception and data symbol.Receive data processor 1185 and handle this data symbol estimation to recover the traffic data that terminal 1130 sends.Processor 1190 is carried out channel estimating for each active terminal that sends on up link.A plurality of terminals can send pilot tone simultaneously on the pilot subband group that they distribute separately on the up link, these pilot subband group can be interlocked.
Processor 1190 and 1150 instructs the operation of (for example control, coordinate, manage or the like) access point 1105 and terminal 1130 respectively.Processor 1190 and 1150 can be associated with program code stored and memory cell (not shown)s data respectively.Processor 1190 and 1150 can also be carried out calculating, is respectively up link and down link and obtains frequency response estimation and impulse response estimation.
For a multi-address system (for example FDMA, OFDMA, CDMA, TDMA or the like), a plurality of terminals can send on up link simultaneously.For such system, pilot subbands can be shared at different terminal rooms.The pilot subbands that channel estimation technique can be used for each terminal is crossed over the situation (may except band edge) of whole operation frequency band.Need such pilot subband structure to obtain frequency diversity for each terminal.The technology described herein realization that can in all sorts of ways.For example, these technology can use hardware, software or their combination to realize.Realize for hardware, can be numeral, analog or digital and simulate both, the processing unit that is used for channel estimating can be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other is designed in the electronic unit or their combination of carrying out representation function herein.For software, can the module of representation function (for example process, function etc.) realizes by carrying out herein.Software code can be stored in memory cell and be carried out by processor 1190 and 1150.
Be appreciated that specific embodiment described herein can realize with hardware, software, firmware, middleware, microcode or any above-mentioned combination.Realize that for hardware processing unit can be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other is designed in the electronic unit or their combination of carrying out representation function herein.
When these embodiment realized with software, firmware, middleware or microcode, program code or code segment, they can be stored in the machine readable media, for example memory unit.Code segment can show as the combination of a process, function, subprogram, program, routine, subroutine, module, software kit, class or any instruction, data structure or program statement.A code segment can be coupled to another code segment or a hardware circuit by transmission and/or reception information, data, independent variable, parameter or memory contents.Information, independent variable, parameter, data etc. can be used any suitable method transmission, forwarding or transmission, and this method comprises Memory Sharing, message transmission, token transmission, Network Transmission etc.
Realize that for software technology described herein can realize (for example process, function etc.) with the module of carrying out this paper representation function.Software code can be stored in the memory cell and by processor and carry out.Memory cell can be implemented within this processor or outside, in this case, it can be coupled to this processor communicatedly via the whole bag of tricks known in the art.
With reference now to Figure 12,, it shows a system 1200, and this system 1200 makes it possible to use transmission mode flexibly in radio communication.System 1200 can comprise: module 1202 is used for determining the time location to the SFN transmission of data of will taking place in subframe; Module 1204 is used to be identified for first transmission mode and second transmission mode of reference signal; Module 1206: be used between first transmission mode that is used for reference signal and second transmission mode, selecting the transmission mode that to use based on whether sending the SFN data in this subframe; Module 1208 is used for broadcasting the information about this transmission mode before using selected transmission mode.Module 1202-1208 can be processor or any electronic equipment, and can be coupled to memory module 1210.
With reference now to Figure 13,, it shows a system 1300, and this system 1300 makes it possible to use transmission mode flexibly in radio communication.System 1300 can comprise: module 1302 is used for determining the time location to the SFN transmission of data of will taking place in subframe; Module 1304 is used to be identified for first transmission mode and second transmission mode of reference signal; Module 1306 is used for broadcasting the information about this transmission mode before using selected transmission mode.Module 1302-1306 can be processor or any electronic equipment, and can be coupled to memory module 1308.
With reference now to Figure 14,, it shows a system 1400, and this system 1400 makes it possible to use transmission mode flexibly in radio communication.System 1400 can comprise: module 1402, be used to use first transmission mode, and wherein this first transmission mode comprises the tone that is used for sending according to a single frequency network (SFN) transmission plan one group of data; Module 1404 is used to use second transmission mode, and wherein this second transmission mode comprises the tone that is used to send reference signal; Module 1406 is used for broadcasting the information about this transmission mode before using selected transmission mode.Module 1402-1406 can be processor or any electronic equipment, and can be coupled to memory module 1408.
With reference now to Figure 15,, it shows a system 1500, and this system 1500 makes it possible to use transmission mode flexibly in radio communication.System 1500 can comprise: module 1502 is used for being received in the time location to the SFN transmission of data of will taking place of subframe; Module 1504 is used to receive the information about first transmission mode, and wherein this information comprises the positional information of at least one Resource Block on time and frequency, and this at least one Resource Block is used for sending one group of data according to a single frequency network (SFN) transmission plan.Module 1502-1504 can be processor or any electronic equipment, and can be coupled to memory module 1506.
Above-described content comprises the example of one or more aspects.Certainly can not describe the combination of each assembly that can expect or method in order to describe the above-mentioned various aspects of mentioning, but any those of ordinary skill of this area can both understand, the further combination and the conversion of various aspects are possible.Therefore, described aspect is intended to comprise all fall within the scope of the appended claims all such distortion, improvement and modifications.In addition, with regard to be used in describe in detail or claim in term " comprise ", this term is intended to represent non-exclusive, its be similar to term " comprise " explained when transitional word is used in the claim like that.

Claims (77)

1. one kind is used for method of wireless communication, comprising:
Determine the time location of will taking place in subframe to the SFN of data transmission;
Be identified for first transmission mode and second transmission mode of reference signal, wherein, the symbol that is used for reference signal and the tone of above-mentioned transmission mode indication subframe;
Based on whether will in this subframe, sending the SFN data, between this first transmission mode that is used for reference signal and second transmission mode, select the transmission mode that to use; And
Before using selected transmission mode, broadcasting is about the information of selected transmission mode.
2. method as claimed in claim 1 also comprises:
Be received in will take place in the subframe to the time location of the SFN of data transmission and about the information of this first and second transmission mode of being used for reference signal.
3. method as claimed in claim 1 also comprises:
Before this first and second transmission mode of using reference signal, broadcasting is about the information of this first and second transmission mode of reference signal.
4. method as claimed in claim 1 also comprises:
Be identified for sending the 3rd transmission mode of SFN data, wherein, the 3rd transmission mode comprises being assigned in the subframe and uses the SFN transmission plan to send the position of the tone of data.
5. method as claimed in claim 4, wherein, broadcasting comprises about the information of the 3rd transmission mode:
Sending being used in this subframe uses the SFN transmission plan to send the positional information of one or more Resource Block on time and frequency of data.
6. method as claimed in claim 1 also comprises:
If in this subframe, will not send the SFN data, then select to be used for second transmission mode of reference signal.
7. method as claimed in claim 1, wherein, determine that this first transmission mode and this second transmission mode comprise:
Reception is used for the parameter of this first transmission mode and this second transmission mode.
8. method as claimed in claim 1, wherein, broadcast described information and comprise:
Be sent in the positional information of the Resource Block that is used for the SFN transmission on time and frequency and the time location that is allocated for this SFN transmission of this subframe in this subframe.
9. method as claimed in claim 4, wherein, broadcast described information and comprise:
Send the time location that is allocated for this SFN transmission in this subframe.
10. method as claimed in claim 1, wherein, determine that this first transmission mode comprises:
Receive the parameter of this first transmission mode.
11. method as claimed in claim 1 wherein, determines that this first transmission mode comprises:
From one group of transmission mode, select this first transmission mode.
12., wherein, select this first transmission mode to comprise as the method for claim 11:
Each symbol in the selection subframe all comprises first transmission mode of the data tones that is used for the SFN transmission.
13., wherein, select to have one or more patterns that are used for the tone of pilot tone and comprise as the method for claim 11:
The non-conterminous pattern of the tone of selecting this to be used for pilot tone.
14., wherein, select to have one or more patterns that are used for the tone of pilot tone and comprise as the method for claim 11:
The pattern that the tone of selecting this to be used for pilot tone is adjacent.
15. method as claimed in claim 1 also comprises:
Receive the indication of indication execution to the SFN transmission of data.
16. method as claimed in claim 3 wherein, determines that this second transmission mode comprises:
Be chosen in and have second transmission mode that is assigned to send the tone of data on each symbol of subframe according to the SFN transmission plan.
17. one kind is used for method of wireless communication, comprises:
Determine the time location of will taking place in subframe to the SFN of data transmission;
Be identified for sending first transmission mode of reference signal, wherein, this first transmission mode is included in the position of the tone that is allocated for the transmission reference signal in this subframe and the position of symbol;
Before using this first transmission mode, broadcasting is about the information of this first transmission mode.
18. the method as claim 17 also comprises:
Be received in will take place in this subframe to the time location of the SFN of data transmission and about the information of this first transmission mode.
19. the method as claim 17 also comprises:
Be identified for sending the SFN transmission mode of SFN data, wherein, this SFN transmission mode is included in being assigned in this subframe and uses the SFN transmission plan to send the position of the tone of data.
20. the method as claim 19 also comprises:
Broadcasting is about the information of this SFN transmission mode before using this SFN transmission mode.
21. as the method for claim 20, wherein, broadcasting comprises about the information of this SFN transmission mode:
Be sent in the positional information of one or more Resource Block on time and frequency that being used in this subframe sends these SFN transmission data.
22. one kind is used for method of wireless communication, comprises:
Use first transmission mode, wherein, this first transmission mode comprises the tone that is used for sending according to single frequency network (SFN) transmission plan one group of data;
Use second transmission mode, wherein, this second transmission mode comprises the tone that is used to send reference signal; And
Before using this first and second transmission mode, broadcasting is about the information of this first and second transmission mode.
23. the method as claim 22 also comprises:
Be received in will take place in the subframe to the time location of the SFN of data transmission and about the information of this first transmission mode.
24. the method as claim 22 also comprises:
Appointment will be used the subframe of this first transmission mode.
25., wherein, use this first transmission mode to comprise as the method for claim 24:
From one or more transmission modes, select first transmission mode.
26., wherein, use this first transmission mode to comprise as the method for claim 22:
Be chosen in to have on each symbol of subframe and be allocated for first transmission mode that sends the tone of data according to the SFN transmission plan.
27. one kind is used for method of wireless communication, comprises:
Be received in the time location of will taking place in the subframe to the SFN of data transmission; And
Reception is about the information of first transmission mode, and wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used for sending according to single frequency network (SFN) transmission plan one group of data.
28. as the method for claim 27, wherein, reception comprises:
Reception is used to send the positional information of at least one Resource Block on time and frequency of reference signal.
29. the method as claim 27 also comprises:
Handle this Resource Block based on this first transmission mode.
30. as the method for claim 29, wherein, processing comprises:
Determine whether current subframe comprises the data of using the SFN transmission plan to send.
31. the method as claim 27 also comprises:
Receive indication and use the indication of first transmission mode.
32. one kind is used for method of wireless communication, comprises:
Be received in the time location of will taking place in the subframe to the SFN of data transmission; And
Reception is about the information of first transmission mode, and wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used to send reference signal.
33. the method as claim 32 also comprises:
Receive indication and use the indication of first transmission mode.
34. as the method for claim 32, wherein, processing comprises:
Determine whether current subframe comprises the data of using the SFN transmission plan to send.
35. the method as claim 34 also comprises:
Receive indication and use the indication of first transmission mode.
36. a device that is used for radio communication comprises:
Determine the module of will taking place in subframe to the time location of the SFN of data transmission;
Be identified for first transmission mode of reference signal and the module of second transmission mode, wherein, the symbol that is used for reference signal and the tone of above-mentioned transmission mode indication subframe;
Based on whether will in this subframe, sending the SFN data, the module of the transmission mode that selection will be used between this first transmission mode that is used for reference signal and second transmission mode; And
Be used for before using selected transmission mode, broadcasting is about the module of the information of selected transmission mode.
37. the device as claim 36 also comprises:
Be received in will take place in the subframe to the time location of the SFN of data transmission and about the module of the information of this first and second transmission mode of being used for reference signal.
38. the device as claim 36 also comprises:
Before this first and second transmission mode of using reference signal, broadcasting is about the module of the information of this first and second transmission mode of reference signal.
39. the device as claim 36 also comprises:
Be identified for sending the module of the 3rd transmission mode of SFN data, wherein, the 3rd transmission mode comprises being assigned in the subframe and uses the SFN transmission plan to send the position of the tone of data.
40. device as claimed in claim 4, wherein, broadcasting comprises about the module of the information of the 3rd transmission mode:
Be used for sending this subframe be used to use the SFN transmission plan to send the module of the positional information of one or more Resource Block on time and frequency of data.
41. the device as claim 36 also comprises:
If will not send the SFN data in this subframe, then selection is used for the module of second transmission mode of reference signal.
42., determine that the module of this first transmission mode and this second transmission mode comprises as the device of claim 36:
Receive the module of the parameter of this first transmission mode and this second transmission mode.
43. as the device of claim 36, wherein, the module of broadcasting described information comprises:
Be sent in the Resource Block that is used for SFN transmission in this subframe positional information on time and frequency and the module of the time location that is allocated for this SFN transmission of this subframe.
44. as the device of claim 39, wherein, the module of broadcasting described information comprises:
Send the module of the time location that is allocated for this SFN transmission in this subframe.
45., wherein, determine that the module of this first transmission mode comprises as the device of claim 36:
Receive the module of the parameter of this first transmission mode.
46., wherein, determine that the module of this first transmission mode comprises as the device of claim 36:
From one group of transmission mode, select the module of this first transmission mode.
47., wherein, select the module of this first transmission mode to comprise as the device of claim 46:
Each symbol in the selection subframe all comprises the module of first transmission mode of the data tones that is used for the SFN transmission.
48. as the device of claim 46, wherein, the module that selection has the pattern of one or more pilot tones comprises:
Select the module of the non-conterminous pattern of this pilot tones.
49. as the device of claim 46, wherein, the module that selection has the pattern of one or more pilot tones comprises:
Select the module of the adjacent pattern of this pilot tones.
50. the device as claim 36 also comprises:
Receive the module of indication execution to the indication of the SFN transmission of data.
51., wherein, determine that the module of this second transmission mode comprises as the device of claim 38:
Be chosen in to have on each symbol of subframe and be allocated for the module of second transmission mode that sends the tone of data according to the SFN transmission plan.
52. a device that is used for radio communication comprises:
Determine the module of will taking place in subframe to the time location of the SFN of data transmission;
Be identified for sending the module of first transmission mode of reference signal, wherein, this first transmission mode is included in the position that is allocated for the tone that sends reference signal in this subframe and the position of symbol;
Before using this first transmission mode, broadcasting is about the module of the information of this first transmission mode.
53. the device as claim 52 also comprises:
Be received in will take place in this subframe to the time location of the SFN of data transmission and about the module of the information of this first transmission mode.
54. the device as claim 52 also comprises:
Be identified for sending the module of the SFN transmission mode of SFN data, wherein, this SFN transmission mode is included in being assigned in this subframe and uses the SFN transmission plan to send the position of the tone of data.
55. the device as claim 54 also comprises:
Broadcasting is about the module of the information of this SFN transmission mode before using this SFN transmission mode.
56. as the device of claim 55, wherein, broadcasting comprises about the module of the information of this SFN transmission mode:
Be sent in the module that being used in this subframe sends the positional information of one or more Resource Block on time and frequency of these SFN transmission data.
57. a device that is used for radio communication comprises:
Use the module of first transmission mode, wherein, this first transmission mode comprises the tone that is used for sending according to single frequency network (SFN) transmission plan one group of data;
Use the module of second transmission mode, wherein, this second transmission mode comprises the tone that is used to send reference signal; And
Before using this first and second transmission mode, broadcasting is about the module of the information of this first and second transmission mode.
58. the device as claim 57 also comprises:
Be received in will take place in the subframe to the time location of the SFN of data transmission and about the module of the information of this first transmission mode.
59. the device as claim 57 also comprises:
Appointment will be used the module of the subframe of this first transmission mode.
60., wherein, use the module of this first transmission mode to comprise as the device of claim 59:
From one or more transmission modes, select the module of first transmission mode.
61., wherein, use the module of this first transmission mode to comprise as the device of claim 59:
Be chosen in to have on each symbol of subframe and be allocated for the module of first transmission mode that sends the tone of data according to the SFN transmission plan.
62. a device that is used for radio communication comprises:
Be received in the module of will taking place in the subframe to the time location of the SFN of data transmission; And
Reception is about the module of the information of first transmission mode, and wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used for sending according to single frequency network (SFN) transmission plan one group of data.
63. as the device of claim 62, wherein, the module that is used to receive comprises:
Reception is used to send the module of the positional information of at least one Resource Block on time and frequency of reference signal.
64. the device as claim 62 also comprises:
Handle the module of this Resource Block based on this first transmission mode.
65. as the device of claim 64, wherein, the module that is used to handle comprises:
Determine whether current subframe comprises the module of the data of using the transmission of SFN transmission plan.
66. the device as claim 62 also comprises:
Receive indication and use the module of the indication of first transmission mode.
67. a device that is used for radio communication comprises:
Be received in the module of will taking place in the subframe to the time location of the SFN of data transmission; And
Reception is about the module of the information of first transmission mode, and wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used to send reference signal.
68. the device as claim 67 also comprises:
Receive indication and use the module of the indication of first transmission mode.
69. as the device of claim 67, wherein, the module that is used to handle comprises:
Determine whether current subframe comprises the module of the data of using the transmission of SFN transmission plan.
70. the device as claim 69 also comprises:
Receive indication and use the module of the indication of first transmission mode.
71. a computer program comprises:
Computer-readable medium comprises:
Make at least one computer determine the code of will taking place in subframe to the time location of the SFN of data transmission;
Make at least one computer be identified for the code of first transmission mode and second transmission mode of reference signal, wherein, above-mentioned transmission mode is indicated the symbol that is used for reference signal and the tone of subframe;
Make at least one computer based will in this subframe, send the SFN data, the code of the transmission mode that selection will be used between this first transmission mode that is used for reference signal and second transmission mode in whether; And
Make at least one computer before using selected transmission mode, broadcasting is about the code of the information of selected transmission mode.
72. a computer program comprises:
Computer-readable medium comprises:
Make at least one computer determine the code of will taking place in subframe to the time location of the SFN of data transmission;
Make at least one computer be identified for sending the code of first transmission mode of reference signal, wherein, this first transmission mode is included in the position that is allocated for the tone that sends reference signal in this subframe and the position of symbol;
Make at least one computer before using this first transmission mode, broadcasting is about the code of the information of this first transmission mode.
73. a computer program comprises:
Computer-readable medium comprises:
Make at least one computer be received in the code of will taking place in the subframe to the time location of the SFN of data transmission; And
Make the code of at least one computer reception about the information of first transmission mode, wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used for sending according to single frequency network (SFN) transmission plan one group of data.
74. a device that is used for radio communication comprises:
At least one processor, configuration is used for:
Determine the time location of will taking place in subframe to the SFN of data transmission;
Be identified for first transmission mode and second transmission mode of reference signal, wherein, the symbol that is used for reference signal and the tone of above-mentioned transmission mode indication subframe;
Based on whether will in this subframe, sending the SFN data, between this first transmission mode that is used for reference signal and second transmission mode, select the transmission mode that to use; And
Before using selected transmission mode, broadcasting is about the information of selected transmission mode.
75. a device that is used for radio communication comprises:
At least one processor, configuration is used for:
Determine the time location of will taking place in subframe to the SFN of data transmission;
Be identified for sending first transmission mode of reference signal, wherein, this first transmission mode is included in the position of the tone that is allocated for the transmission reference signal in this subframe and the position of symbol;
Before using this first transmission mode, broadcasting is about the information of this first transmission mode.
76. a device that is used for radio communication comprises:
At least one processor, configuration is used for:
Be received in the time location of will taking place in the subframe to the SFN of data transmission; And
Reception is about the information of first transmission mode, and wherein, this information comprises the positional information of at least one Resource Block on time and frequency that is used for sending according to single frequency network (SFN) transmission plan one group of data.
77. one kind is used for method of wireless communication, comprises:
Determine the time location of will taking place in subframe to the SFN of data transmission;
Be identified for sending first transmission mode of reference signal, wherein, this first transmission mode is included in being allocated in this subframe and sends reference signal and the position of the tone that is used for the sky tone and the position of symbol;
Before using this first transmission mode, broadcasting is about the information of this first transmission mode.
CN200780030981.2A 2006-08-21 2007-08-21 Method and apparatus for flexible pilot pattern Active CN101507220B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US83935706P 2006-08-21 2006-08-21
US60/839,357 2006-08-21
US11/841,771 2007-08-20
US11/841,771 US8174995B2 (en) 2006-08-21 2007-08-20 Method and apparatus for flexible pilot pattern
PCT/US2007/076387 WO2008024751A2 (en) 2006-08-21 2007-08-21 Method and apparatus for flexible pilot pattern

Publications (2)

Publication Number Publication Date
CN101507220A true CN101507220A (en) 2009-08-12
CN101507220B CN101507220B (en) 2013-03-13

Family

ID=40977843

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200780030981.2A Active CN101507220B (en) 2006-08-21 2007-08-21 Method and apparatus for flexible pilot pattern

Country Status (2)

Country Link
CN (1) CN101507220B (en)
TW (1) TWI354465B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102484842A (en) * 2009-08-24 2012-05-30 高通股份有限公司 Facilitating decoding system information blocks in a heterogeneous network
CN102668413A (en) * 2009-11-02 2012-09-12 高通股份有限公司 TDM-FDM relay backhaul channel for LTE advanced
CN102668668A (en) * 2009-11-17 2012-09-12 高通股份有限公司 Subframe dependent transmission mode in LTE-advanced
CN104393969A (en) * 2008-08-08 2015-03-04 高通股份有限公司 Utilizing harq for uplink grants received in wireless communications
US10142984B2 (en) 2009-09-15 2018-11-27 Qualcomm Incorporated Methods and apparatus for subframe interlacing in heterogeneous networks
CN109792351A (en) * 2016-09-30 2019-05-21 高通股份有限公司 Reference signal design
CN110326348A (en) * 2017-02-28 2019-10-11 高通股份有限公司 Narrowband Time Division duplex frame structure for narrow band communication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU767981B2 (en) * 1999-10-02 2003-11-27 Samsung Electronics Co., Ltd. Apparatus and method for gating data on a control channel in a CDMA communication system
JP2003528507A (en) * 2000-03-23 2003-09-24 シーメンス モービル コミュニケイションズ ソシエタ ペル アチオニ Handover procedure in wireless communication system
GB2415872B (en) * 2004-06-30 2007-09-05 Samsung Electronics Co Ltd Multicarrier transmission systems

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104393969A (en) * 2008-08-08 2015-03-04 高通股份有限公司 Utilizing harq for uplink grants received in wireless communications
CN104393969B (en) * 2008-08-08 2018-05-15 高通股份有限公司 Allow the method and device for using HARQ for the uplink of received in wireless communications
CN102484842A (en) * 2009-08-24 2012-05-30 高通股份有限公司 Facilitating decoding system information blocks in a heterogeneous network
US10142984B2 (en) 2009-09-15 2018-11-27 Qualcomm Incorporated Methods and apparatus for subframe interlacing in heterogeneous networks
CN102668413A (en) * 2009-11-02 2012-09-12 高通股份有限公司 TDM-FDM relay backhaul channel for LTE advanced
CN102668413B (en) * 2009-11-02 2014-12-10 高通股份有限公司 TDM-FDM relay backhaul channel for LTE advanced
CN102668668A (en) * 2009-11-17 2012-09-12 高通股份有限公司 Subframe dependent transmission mode in LTE-advanced
CN102668668B (en) * 2009-11-17 2015-12-16 高通股份有限公司 The transmission mode of subframe is depended in advanced LTE
CN109792351A (en) * 2016-09-30 2019-05-21 高通股份有限公司 Reference signal design
CN109792351B (en) * 2016-09-30 2021-11-09 高通股份有限公司 Method, apparatus and computer readable medium for reference signal design
CN110326348A (en) * 2017-02-28 2019-10-11 高通股份有限公司 Narrowband Time Division duplex frame structure for narrow band communication

Also Published As

Publication number Publication date
TW200818757A (en) 2008-04-16
TWI354465B (en) 2011-12-11
CN101507220B (en) 2013-03-13

Similar Documents

Publication Publication Date Title
CN101606346B (en) Frequency of utilization partial reuse carries out the method and apparatus of frequency hopping
CN101652954B (en) Base station device, mobile station, radio communication system, and communication control method
JP5795395B2 (en) Improved downlink association set for uplink ACK / NACK in time division duplex system
RU2427093C2 (en) Method and device for flexible pilot template
CN103023627B (en) Method and apparatus for ackch with repetition in orthogonal systems
CN102668665B (en) Frequency spectrum in heterogeneous network is understood
CN102090135B (en) Peer-to-peer device identification and cognitive communication
CN102132598B (en) Supporting multiple access technologies in wireless environment
RU2452104C1 (en) Subcarrier allocation for control data in communication system
CN101491153B (en) Base station and transmission method
CN101911758B (en) Methods and systems for resource allocation
CN102498688B (en) Method and system for hybrid automatic repeat request operation for uplink coordinated multi-point signaling
CN101507220B (en) Method and apparatus for flexible pilot pattern
KR101432778B1 (en) Bundled frequency division multiplexing structure in wireless communications
EP2334114B1 (en) Wireless communication system, base station device, mobile station device, and wireless communication method
CN102119504A (en) Multi-carrier grant design
CN102845118A (en) Multiplexing of peer-to-peer (p2p) communication and wide area network (wan) communication
CN102388665A (en) Method and apparatus for supporting user equipments on different system bandwidths
CN104348606A (en) Control information allocation method in a communications system
CN102187726A (en) Carrier aggregation
CN102415039A (en) Transmission of feedback information in multi -carriers systems and determination of up-link ACK/NACK resources from down-link CCE of the down-link grant
CN102648598A (en) Relay backhaul uplink HARQ protocol
CN102461044A (en) Resource selection for transmission of multiple ACK/NACK on PUCCH channel
CN102577520A (en) MBSFN subframe generation and processing for unicast
CN103765806A (en) Multicast ARQ in machine type communication network

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1134182

Country of ref document: HK

C14 Grant of patent or utility model
GR01 Patent grant
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1134182

Country of ref document: HK