CN104247468A - Lte/wi-fi coexistence - Google Patents

Lte/wi-fi coexistence Download PDF

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Publication number
CN104247468A
CN104247468A CN201280004699.8A CN201280004699A CN104247468A CN 104247468 A CN104247468 A CN 104247468A CN 201280004699 A CN201280004699 A CN 201280004699A CN 104247468 A CN104247468 A CN 104247468A
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CN
China
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described
wireless device
transmission
bs
station
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CN201280004699.8A
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Chinese (zh)
Inventor
伊加尔·比特兰
阿里埃勒·亚吉尔
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阿尔戴尔半导体有限公司
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Priority to US201161430193P priority Critical
Priority to US61/430,193 priority
Application filed by 阿尔戴尔半导体有限公司 filed Critical 阿尔戴尔半导体有限公司
Priority to PCT/IB2012/050015 priority patent/WO2012093349A2/en
Publication of CN104247468A publication Critical patent/CN104247468A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
    • H04W72/1205Schedule definition, set-up or creation
    • H04W72/1215Schedule definition, set-up or creation for collaboration of different radio technologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method for communication in a wireless device (24) includes establishing a first connection with a base station (BS 28) of a long-range wireless data network, and a second connection on a Wireless Local Area Network (WLAN). A time interval (96) is selected in the wireless device for communicating over the second connection. In preparation for the selected time interval, the BS is caused to refrain from scheduling data transmission from the wireless device to the BS over the first connection during the time interval, by reporting to the BS prior to the time interval that no data is pending for transmission from the wireless device. The wireless device communicates over the second connection on the WLAN during the time interval.

Description

LTE/WI-FI coexists

The cross reference of related application

The application is the sequence number submitted on December 27th, 2006 is the part subsequent application of the U.S. Patent application of 11/647,122, and the sequence number submitted on April 19th, 2009 is the part subsequent application of the U.S. Patent application of 12/426,251.Its disclosure is incorporated to by reference at this.This application claims the rights and interests that the sequence number submitted on January 6th, 2011 is the U.S. Provisional Patent Application of 61/430,193, its disclosure is incorporated to by reference at this.

Invention field

The present invention relates generally to radio communication, particularly relate to coexisting between communication equipment.

Background of invention

In some communication systems, the communication equipment of different communication protocol is close to each other and at contiguous or overlapping frequency band operation.Because position and frequency is close, such system is easy to be interfered.

Known in the art for the multiple technologies coexisted between different communication protocol.Such as, its disclosure describes the communication means comprised by the first connection establishment first communication session between wireless terminal and the base station (BS) of long distance wireless data network No. 2007/0275746th, this U.S. Patent Application Publication be incorporated to by reference, the first communication session is according to the first protocol operation defining a series of time frame.Based on the time frame defined by BS, time slot is allocated for by the second connection establishment second communication session between wireless terminal and peripheral wireless device, second communication session according to be different from the first agreement second, short range slotted communication protocol operation.In time frame, distribute the time interval (time interval) connect communication between BS and wireless terminal by first, so that the time slot interleaving of the time interval and the distribution that distribute and not overlapping.First communication session and second communication session are side by side carried out respectively within the time interval of distribution and the time slot of assignment.

Its disclosure describes No. 2009/0129367th, this U.S. Patent Application Publication be incorporated to by reference and comprises point method being used in the communication in the time interval of the first communication session by the first connection establishment between wireless terminal and the base station of long distance wireless data network, and it is according to the first protocol operation defining the time frame with downlink subframe and uplink sub-frames.Time slot is allocated for the second communication session by the second connection establishment between terminal and peripheral wireless device, second communication session according to be different from the first agreement and have retransmission mechanism second, short range time slot protocol operation.Time slot and the downlink subframe defined by BS and UL subframe frame synchronization.Operating in some time slots overlapping with downlink subframe of second connection is suppressed to call retransmission mechanism and to cause terminal only to transmit during not overlapping with downlink subframe time slot.

Its disclosure is at this United States Patent (USP) be incorporated to by reference the 7th, 542, No. 728 devices describing the communication for comprising at least one RF acceptor circuit, RF acceptor circuit is coupled to receive the first and second RF signals transmitted respectively by the first and second different wireless networks according to the first and second different procotols with frequency reducing conversion, to export the signal of the first and second frequency reducing conversions.Baseband processing circuitry comprises and is coupled to receive and process the first and second down converting signal to extract the processing components of the first and second data from signal.Processing components has for the first configuration according to first network agreement demodulation first down converting signal with for the second configuration according to second network agreement demodulation second down converting signal.

Its disclosure is at this United States Patent (USP) be incorporated to by reference the 7th, 545, No. 787 and No. 2010/0142504th, U.S. Patent Application Publication describe be included in wireless terminal and long distance wireless data network base station between set up the method for the communication of the first connection, this long distance wireless data network is according to the first protocol operation defining a series of time frames transmitted for the data between wireless terminal and base station.Signal is sent to from wireless terminal and identifies and comprise the base station at the interval of one or more time frame, interim wireless terminal can not receive data from base station.In interim, between wireless terminal and the access point of WLAN (wireless local area network) (WLAN), set up the second connection according to the second protocol being different from the first agreement.

Summary of the invention

Embodiments of the present invention described here provide the method for the communication in wireless device.The method comprises to be set up first with the base station of long distance wireless data network (BS) and is connected and sets up the second connection in WLAN (wireless local area network) (WLAN).Select time interval is used for connecting communication by second in a wireless device.In order to prepare to the time interval selected, not having data to treat from wireless device transmission by the forward direction BS report in the time interval, preventing BS and dispatching during this time interval by the first data transmission of connection from wireless device to BS.Wireless device connects communication by second on WLAN during this time interval.

In some embodiments, even if when some data BS to be sent to time, or reports on the implementation do not have data to be passed, to cause BS to dispatch the transmission of data to be passed outside the time interval.In one embodiment, the method comprises to prepare to the end in the time interval, treats from wireless device transmission to BS report data.Report data is to be passed comprises the data volume that report is different from the actual size of data to be transferred, so that the size of the transmission of Control and Schedule.

In another embodiment, long distance wireless data network is according to Long Term Evolution (LTE) standard operation, and report does not have data to send buffer status reporting (BSR) message to be passed comprising.In another execution mode, the method comprise by be passed alternately to BS report data and do not have data wait to transmit be applied in the first connection and second connect between the communication pattern that replaces.In another execution mode, before and after the time interval that the method is included in selection, suppress the communication connected by second.The time that can be included in the dispatch delay considering the first connection to BS report sends to BS report message.

The wireless device comprising radio frequency (RF) front end and baseband circuit is provided in addition according to embodiments of the present invention.RF front end is configured to exchange RF signal to communicate with on wireless lan (wlan) on long distance wireless data network.Baseband circuit is configured to set up to be connected with first of the BS of long distance wireless data network by RF front end connect with second on WLAN, to select the time interval being used for connecting communication by second, when the time interval selected by preparing, data are not had to treat from wireless device transmission by the forward direction BS report in the time interval, BS is prevented and dispatches during this time interval by the first data transmission of connection from wireless device to BS, and during this time interval, use wireless device to connect communication by second on WLAN.

The method for communicating in a wireless device is also provided according to embodiments of the present invention.The method is included in uplink interval for transmitting to BS and is connected for setting up first with the base station (BS) of long distance wireless data network in the alternative series of downlink interval that receives from BS.Be connected the station simultaneously setting up the wireless lan (wlan) of locating with closely wireless device in a wireless device with first second is connected.By by signal from wireless device transmission arrive at a station in case hinder stand in down link interval during transmit, prevent from standing in transmission in the second connection to the interference of BS reception on first connection.

In some embodiments, prevent interference from comprising and stop wireless device to connect to station transmission second, to prevent station from transmitting response message to wireless device during down link interval.In one embodiment, prevent from interference from comprising the transmission of CTS-to-self message is arrived at a station.In disclosed execution mode, prevent from disturbing the transmission comprising and dispatch and arrive at a station from wireless device so that the corresponding response from station occurs during the first uplink interval connected.Scheduling transmission can comprise that arranging passes a parameter accordingly to reply occurs during uplink interval.Parameter can comprise duration and/or the time started of transmission.

In another embodiment, prevent interference from comprising and use Modulation and Coding Scheme (MCS) to communicate with station, described Modulation and Coding Scheme MCS is selected so that the transmission of standing is placed in outside downlink interval.The method can comprise use Modulation and Coding Scheme (MCS) and transmit to station, and described Modulation and Coding Scheme MCS is selected to take into account wireless device by the first transmission connected to the interference of station by the reception of the second connection.

In one embodiment, the method is included in the power level lower than the normal power level for data transmission being arrived at a station and transmits response message and arrive at a station, and the Modulation and Coding Scheme (MCS) arranging response message is with mesh power level.In another embodiment, prevent from disturbing the power level transmission signal being included in selection to stop described station but to avoid stoping other the station not having closely wireless device.In another execution mode, prevent from disturbing the frame time benchmark comprising and in a wireless device the time reference that second connects is synchronized to the first connection.

The wireless device comprising radio frequency (RF) front end and baseband circuit is additionally provided according to embodiments of the present invention.RF front end is configured to exchange RF signal to communicate on long distance wireless data network with wireless lan (wlan).Baseband circuit is configured to set up to be connected with first of the base station (BS) of long distance wireless data network at the alternative series of the uplink interval for transmitting to BS and the downlink interval for receiving from BS by RF front end be connected be connected the station side by side setting up the WLAN located with closely wireless device with first second, and by being arrived at a station to transmit during stoping this to stand in down link interval from wireless device transmission by signal, prevent from standing in transmission in the second connection to the interference of BS reception on first connection.

In addition, the method for communicating in a wireless device is provided according to embodiments of the present invention.The method comprises to be set up first and is connected and is connected with first and side by side set up second on wireless lan (wlan) and connect with the base station of long distance wireless data network (BS), and connects by first and communicate with BS in the mode of predefine active stage with the pattern of nonmobile phase.The pattern that the transmission connected by second is based upon the first connection predefined active stage and nonmobile phase is configured, to reduce the interference between the first connection and the second connection.

In some embodiments, first connects according to Long Term Evolution (LTE) standard operation, and which comprises semi-continuous scheduling (SPS) and/or discontinuous reception (DRX).In one embodiment, configuration transmit comprise prevent by second connect be transmitted in the active stage of the first connection during occur.In another embodiment, configuration transmits the transmission comprising and control wireless device and connect by second.

In disclosed execution mode, configuration transmits the transmission comprising and control wireless device and connect the opposite endpoint communicated with by second.In another embodiment, configuration transmits and comprises based on being allocated for active stage and the mark being allocated for the active stage that down link transmits that up link transmits, controlling to transmit for the power level that transmits and/or the signal type for transmitting.Configuration transmits the frame time benchmark that can comprise and in a wireless device the time reference that second connects is synchronized to the first connection.

In addition, provide according to embodiments of the present invention the wireless device comprising radio frequency (RF) front end and baseband circuit.RF front end is configured to exchange RF signal to communicate on long distance wireless data network with wireless lan (wlan).Baseband circuit is configured to set up first by RF front end with the base station (BS) of long distance wireless data network and is connected, and be connected with first and side by side set up second on WLAN and connect, communicate with BS in the mode of predefine active stage with the pattern of nonmobile phase to connect by first, and be based upon the transmission that the first connection predefined active stage was connected by second with the pattern configurations of nonmobile phase, with reduce the first connection and second connect between interference.

From the detailed description of its execution mode below and composition graphs invention will be more fully understood, wherein:

Accompanying drawing is sketched

Fig. 1 is the block diagram of the method for the LTE/Wi-Fi communication system schematically shown according to embodiments of the present invention;

Fig. 2 is the flow chart of the method that the LTE/Wi-Fi schematically showing foundation embodiments of the present invention coexists;

Fig. 3 and Fig. 4 is the figure that the timing that LTE and Wi-Fi according to embodiments of the present invention transmits is shown;

Fig. 5 is the block diagram of the LTE/Wi-Fi communication system schematically shown according to another embodiment of the invention;

Fig. 6 is the figure that the timing that LTE and Wi-Fi according to embodiments of the present invention transmits is shown;

Fig. 7 is the flow chart schematically showing the method that the LTE/Wi-Fi according to another execution mode of the present invention coexists;

The detailed description of execution mode

Summary

Some communication equipments communicate simultaneously on teledata network (such as, Long Term Evolution-LTE network) with wireless lan (wlan).In fact, transmission on a network can cause the interference to the reception on another network, especially when reflector and receiver are juxtaposed and two networks when overlapping or contiguous frequency band operation.

Embodiments of the present invention described here are provided for the method and system of the improvement coexisted, and it contributes to reducing or eliminating such interference.Although execution mode described here relates generally to LTE and WLAN(also referred to as Wi-Fi), disclosed technology can be applied in other network type be applicable to similarly.

In execution modes disclosed in some, wireless device communicates with LTE base station (BS) and to stand (STA) with WLAN or access point (AP) communicates simultaneously.According to LTE specification, BS scheduling transmits from the up link of wireless device with response buffering status report (BSR) message, in buffer status reporting (BSR) message, and the amount of the data that wireless devices report is to be transmitted.Wireless device utilizes BSR mechanism not to be used to the transmission of LTE up link and therefore, it is possible to time interval of communicating for Wi-Fi of interference-free to create.

In some embodiments, the time interval being used for Wi-Fi communication selected by wireless device.In order to prepare to the time interval selected, namely wireless device does not have data to wait to transmit and cause the time interval not to be used to the transmission of LTE up link to BS report by the BSR that is sent to BS zero.In time receiving the message of BSR=0, BS can not dispatch and carry out any uplink data transmission until receive the BSR of non-zero from wireless device.Thus, the risk that the time interval that BSR=0 message is followed in wireless device use does not have LTE to disturb for Wi-Fi communication.

In execution mode disclosed in other, wireless device communicates with LTE BS with the alternative series of downlink interval with uplink interval in time-division (TD) LTE pattern.Wireless device communicates with the Wi-Fi STA that closely equipment is located simultaneously.Because very close, the interference that can cause receiving LTE launched outward by the band falling into the Wi-Fi reflector from STA of LTE band.In some embodiments, wireless device prevents this interference to stop STA to transmit during down link interval by transmission signal to neighbouring STA.

In execution mode disclosed in other, wireless device is arranged by LTE BS and communicates with the sparse mode (such as, LTE subframe) in the active stage be separated by nonmobile phase.Such as, wireless device can be configured to operate in semi-continuous scheduling (SPS) pattern and/or discontinuous reception (DRX) pattern, and both define in LTE specification.In some embodiments, wireless device adjustment is disturbed to reduce based on the communication on the WLAN of LTE activity/an inactive mode.

System describes

Fig. 1 is the block diagram of the LTE/Wi-Fi communication system 20 schematically shown according to embodiments of the present invention.System 20 comprises communication equipment 24, and it is communicated with wireless lan (wlan) by teledata network simultaneously.

In this example, teledata network is according to third generation partner program (3GPP) Long Term Evolution (LTE) standard operation.Be also referred to as the LTE of the Universal Terrestrial wireless access (E-UTRA) of evolution such as, be described in detail in 3GPP technical specification TS36.300, this specification is in December, 2010 9.6.0 version, title be " Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access(E-UTRA) and Evolved Universal Terrestrial Radio Access Network(E-UTRAN); Overall description; Stage2 (Release9) ", it is incorporated to by reference at this.In the context of present patent application and claim, term " LTE specification " jointly refers to any specification or the standard that define LTE communication, comprises variant and the extension of specification cited above.In selective execution mode, the specification in the current or future that teledata network can be applicable to according to other or protocol operation.

WLAN in this example is according to IEEE802.11 standard operation.Such as, WLAN operation in 2.4GHz frequency range is defined in ieee standard 802.11-2007, this standard was announced on June 12nd, 2007, title be " IEEE Standard for Information Technology-Telecommunications and Information Exchange between Systems-Local and Metropolitan Area Networks-Specific Requirements; Part11:Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) Specifications, " it is incorporated to by reference at this.WLAN is also referred to as Wi-Fi.In the context of present patent application and claim, term " WLAN " and " Wi-Fi " are used to jointly refer to original IEEE802.11 standard and its all variants and extension (such as, IEEE802.11n-2009), any WLAN type that other is applicable to also is referred to.

In the embodiment of figure 1, equipment 24 communicates with the LTE base station (BS) 28 also referred to as eNodeB.Thus, equipment 24 plays LTE subscriber equipment (UE).In Wi-Fi network, in some embodiments, equipment 24 plays Wi-Fi station (STA) and in other embodiments, equipment 24 plays Wi-Fi access point (AP).Thus, equipment 24 is communicated by WLAN and Wi-Fi STA or AP32.Equipment 24 can be involved in the multi-mode communication device of such as such as smart mobile phone, in portable router, in fixing router or in other equipment be applicable to any.

In various embodiments, LTE with Wi-Fi communicates in the execution of contiguous frequency band.In the execution mode of an illustration, equipment 24 operates according to LTE Frequency Division Duplexing (FDD) (FDD) at frequency band 7, wherein up link (UL) to be transmitted and down link (DL) is transmitted in 2620-2690MHz scope in 2500-2750MHz scope, and is transmitted in 2400-2480MHz scope in Wi-Fi network.As selection, other operator scheme (such as, time division duplex-TDD) and frequency band also can be used.Because position and frequency is close, operation in one network can suffer the interference from another network.To explain in detail as following, equipment 24 application reduces or eliminates the co-existence schemes of such interference.In time using these technology, equipment 24 can carry out LTE and Wi-Fi communication session simultaneously, and on any one network, be not almost with or without the deterioration of performance.

Although execution mode described here relates generally to the independent communication equipment with LTE and Wi-Fi two kinds of abilities, some in disclosed technology can be applied to separating of being disturbed similarly with neighbouring LTE and Wi-Fi equipment.

In the embodiment of figure 1, equipment 24 comprises antenna 36 and radio frequency (RF) front end 40, and equipment 24 uses antenna 36 to exchange RF signal to communicate on LTE with Wi-Fi network with radio frequency (RF) front end 40 with BS28 with AP or STA32.LTE base band (BB) processor 44 realizes the LTE UE processing capacity of equipment.Wi-Fi BB processor 48 realizes Wi-Fi(STA or AP of equipment) processing capacity.

In some embodiments, LTE with Wi-Fi BB processor is communicated mutually by coexistence interface, for exchanging the information contributing to coordination LTE/Wi-Fi and coexist.Front end 40 is shared between LTE and Wi-Fi, namely realizes transmitting and receiving on LTE and Wi-Fi two networks.RF front end can comprise the suitable filter relaxing or reduce LTE/Wi-Fi interference.

The configuration of the equipment 24 shown in Fig. 1 is exemplary configuration, and it is purely in order to the cause of clear concept is selected.In alternate embodiments, other suitable Equipments Setting any can be used.Such as, LTE with Wi-Fi communication is by the RF front end that is separated and antenna realization.As another example, the function of BB processor 44 and 48 realizes by independent BB processor.In the present context, BB processor 44 and 48 is collectively referred to as the baseband circuit realizing disclosed technology.Some element of equipment 24 can use hardware to be implemented, and such as uses one or more application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA) to realize.As selection, some elements of equipment 24 can use the combination of software or hardware and software element to be implemented.

In some embodiments, the function of equipment 24 can use all-purpose computer to be implemented, and it is programmed to realize function described here in software.Such as, software is Electronically downloaded to computer by network, and it can be used for selectively or is additionally provided and/or is stored on permanent tangible medium, on such as magnetic memory, optical memory or electronic memory.

Use coexisting of buffer status reporting (BSR)

In some embodiments, the time interval of equipment 24 by utilizing buffer status reporting (BSR) message establishing defined in LTE not to be used to LTE up link transmission (from equipment to BS28).These time intervals then can be used to Wi-Fi communication, and not having the LTE from equipment 24 to transmit affects the risk of the Wi-Fi reception in equipment.

BSR mechanism is defined in 11.3 chapters and sections of 3GPP TS36.300 cited above and the 5.4.5 chapters and sections of 3GPP TS36.321; described specification is the 9.3.0 version in June, 2010, title be " Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release9), " it is merged in by reference at this.According to this definition, LTE UE use BSR message to BS report cushion in the transmit buffer and the amount of data to be transmitted.It is to be passed that the BSR of zero shows do not have data.The up link transmission of the various UE of BSR scheduling message that LTE BS sends based on them.More particularly, if specific UE reports that BSR=0, BS can not be this UE scheduled uplink data transmission until receive non-zero BSR subsequently.

In some embodiments, the BB processor 44 in equipment 24 is by Wi-Fi network communication select time interval.When the time interval selected by preparing, to BS28, BB processor 44 guarantees that the time interval is not used to the transmission of LTE up link by transmitting BSR=0 message (showing do not have data BS to be sent to) before this interval.BB processor 44 transmits non-zero BSR message (showing that a certain amount of data are to be passed) when this interval closes to an end.In order to respond the message receiving BSR=0, prevention is dispatched the transmission of LTE up link from equipment 24 by BS28.After receiving non-zero BSR message, BS will dispatch the transmission of LTE up link.

By this way, BB processor 44 can cause system 20 to operate in being intended for use time interval that LTE up link transmits and not being used to the pattern that replaces between the time interval of LTE up link transmission (and therefore can be used for Wi-Fi communicate).

Fig. 2 is the flow chart of the method coexisted for LTE/Wi-Fi schematically shown according to embodiments of the present invention.The method starts from BB processor 44 and sends the BSR message of report non-zero BSR to BS28 in non-zero BSR step 60.

In some embodiments, stop step 64 at Wi-Fi, equipment 24 stops Wi-Fi to communicate during by the time interval being used to the transmission of LTE up link.Such as, BB processor 44 can cause BB processor 48 to suppress Wi-Fi to communicate by the mode sending suitable instruction in coexistence interface.

In time receiving non-zero BSR, BS28 scheduling is from the up link transmission of equipment 24.Use this to distribute, during LTE up link transfer step 68, BB processor 44 time interval under discussion, transmit data to be passed to BS28.

In the end of LTE uplink interval, in zero BSR step 72, namely report zero BSR does not have data message to be passed to be in the transmit buffer sent to BS28 by BB processor 44.In order to respond zero BSR message, BS28 prevents the LTE up link transmission of scheduling from equipment 24.Thus, communicated with STA or AP32 by Wi-Fi network at Wi-Fi communication steps 76, BB processor 48, and not from the risk of the interference of LTE up link transmission.

Method then turns back to above step 60 for dispatching another LTE uplink interval.Use this technology, equipment 24 can be enforced LTE uplink interval and not be used to the alternate mode at the interval that LTE up link transmits.

In time making in this way, at least in some scenes, equipment 24 can report zero BSR, even if some data are just to be passed in its transmission buffering area.This kind of report causes BS after receiving non-zero BSR after a while, only dispatch this data transmission in LTE up link.In other words, this technology makes equipment 24 can postpone the transmission of uplink data until the end in the time interval.

Typically, there is between the scheduling transmitted up link at transmission and the BS28 of the non-zero BSR message from equipment 24 some postpone.This delay is caused by LTE protocol, and its size is about 10ms.Typically, when provided when the timing at interval, BB processor 44 considers that this postpones.In some embodiments, the size that sets interval when considering the goodput LTE connection from equipment 24 to BS28 of BB processor 44 and/or duty ratio.These parameters can be such as set up by the BSR value (amount of the data to be transferred of report) arranging report.

Consider such as 10Mbps(=10Kbit/ms) average uplink throughput and supposition expect activity time (length of each LTE uplink interval) be 10ms.In this case, the up link transmission that the BSR message sending the data to be transferred of report 100kb will cause BS to dispatch about 10ms.Thus, at least in some cases, the data volume that equipment 24 is reported in non-zero BSR message is different from data volume to be transmitted.

Fig. 3 is the figure that the timing that LTE and Wi-Fi according to embodiments of the present invention transmits is shown.The example of Fig. 3 show equipment 24 use BSR described above mechanism how to create for LTE up link the time interval and be not used to time interval of LTE up link transmission.

The top of Fig. 3 shows the transmission of LTE control message, and is especially sent to non-zero BSR message 80 and the zero BSR message 88 of BS28 from equipment 24.The middle part of Fig. 3 shows the timing of LTE uplink data transmission.Certain after each non-zero BSR80 of BS28 postpones (such as, 10ms) dispatches LTE up link transmission 84.The bottom of Fig. 3 show Wi-Fi activity time interval.More particularly, transmit 84 in the corresponding LTE up link of prevention interval 92(), Wi-Fi activity is prevented to avoid the interference transmitted from LTE up link.

Equipment 24 sends zero BSR message 88 to BS28 when the transmission of LTE up link closes to an end.After zero BSR message, BS can not dispatch the transmission of LTE up link until next non-zero BSR message 88.Thus, these BSR message forms Wi-Fi active stage 96, and equipment 24 can communicate in Wi-Fi active stage 96 in Wi-Fi network, and not from the interference of LTE up link.

In a kind of execution mode of illustration, each uplink data transmits 84 for 20ms length, and each Wi-Fi active stage 96 is 15ms length.Selectively, but, any other be applicable to length can be used.

LTE BB processor 44 can stop Wi-Fi to communicate in every way during interval 92.In one embodiment, LTE BB processor 44 uses the coexistence interface between BB processor to notify the timing at Wi-Fi BB processor 48 interval 92 clearly.Wi-Fi BB processor can suppress Wi-Fi to communicate in any suitable manner during interval 92, and what such as, end by being used in interval 84 stopped is called that the process of " CTS-to-self " arranges disabled (NAV) interval.

In alternate embodiments (such as, when LTE with Wi-Fi BB processor is in the equipment be separated and/or when not being connected by coexistence interface), LTE BB processor 44 does not notify the timing at Wi-Fi BB processor 48 interval 92.In these embodiments, the Wi-Fi down-link reception during interval 92 can suffer the interference transmitted from LTE up link.The level of interference can change according to the RF parameter of the delivering power of the isolation of LTE and the Wi-Fi antenna in the filter quality of such as RF front end, equipment 24, LTE reflector and other RF parameter, Wi-Fi receiver and Wi-Fi modulator-demodulator quality.When severe jamming, Wi-Fi packet can be abandoned and be retransmitted until they are successfully received at (or at interval 92 or at noiseless interval 84 subsequently).

Symbiont techn based on BSR can be implemented in every way in equipment 24.In some embodiments, BSR co-existence schemes is realized by LTE BB processor 44.Because the LTE BB processor running LTE protocol stack has had the necessary information about transmitting buffer status, therefore this enforcement may be useful.And LTE BB processor can have the valuable information about BS behavior, such as, the BS that non-zero BSR makes a response is postponed.This category information can be used to optimize co-existence schemes.

In alternate embodiments, the co-existence schemes based on BSR is implemented in another processor of LTE BB processor 44 outside.In one embodiment, in Wi-Fi AP situation, co-existence schemes can be implemented in Wi-Fi BB processor 48.In these embodiments, the control of BSR is indirectly, and it is realized by other processor controlling to be supplied to the information rate of LTE BB processor 44.Typically, in this is implemented, other processor should receive the clear and definite information about average LTE uplink throughput, or it should by checking that the packet flowed out implicitly estimates this throughput.Such as because it does not need to revise existing LTE BB processor or other LTEUE element, thus such enforcement can be useful.

Whether no matter implement, the size of the LTE transmission buffering area in equipment 24 should be enough large to hold uplink data packet, supports LTE up link inactive duration.

The main source of the interference in the supposition of the scheme based on BSR equipment 24 described above is the reception being sent to the transmission of Wi-Fi down link from LTE up link.Rightabout interference, that is, the reception transmitted from Wi-Fi up link to LTE down link is assumed to be to be tolerable or otherwise to be alleviated (such as, using the enough filtering in RF front end 40).

In some embodiments, after zero BSR message, BS28 can not dispatch the data transmission in LTE up link, but can the relevant up link transmission of scheduling controlling.These control the relevant unlikely interference caused Wi-Fi down link of transmission, because their power output is typically lower than the power output that data transmit.In some embodiments, depend on the aspiration level of interference, the transmission controlling relevant transmission may be avoided occasionally.

For the coexisting based on BSR with WI-FI access point juxtaposed TD LTE UE

Fig. 4 is the figure of LTE and the Wi-Fi transmission timing illustrated according to embodiments of the present invention.In this embodiment, the LTE communication of LTE BB processor 44 is according to LTE time-division (TD), and Wi-Fi BB processor 48 plays Wi-Fi AP.In this example, each LTE TD descending chain circuit frame and each LTE TD uplink frame are that 2.5ms is long, although other frame sign be applicable to any also can be used.

During Wi-Fi stops interval 92, as explained above, BB processor 48 suppresses Wi-Fi to communicate.In these intervals (corresponding interval 84) period, LTE communication can be performed at uplink direction and down link direction.

Between interval 92 (that is, during Wi-Fi active stage), due to described above based on the mechanism of BSR, do not transmitted 108 interference causing receiving Wi-Fi by LTE up link.But, can disturb during LTE down link transmits 112.(in FDD scene, assuming that FDD frequency band 7 is used.In this frequency band, down-link frequencies has relatively large being separated with Wi-Fi frequency, and front end isolation is assumed to be that foot is in preventing the interference in interval 96.)

Due to the Wi-Fi AP in this execution mode and LTE UE juxtaposition, this interference can be reduced.In some embodiments, BB processor 48 in this example of Wi-Fi AP() know TD LTE frame timing and with TD LTE frame Timing Synchronization.Wi-Fi AP transmission 100 is synchronous with LTE uplink interval 108.In order to this object, Wi-Fi AP(BB processor 48) typically recognize time started of LTE uplink interval 108 and duration and revise Wi-Fi size of data to be applicable to these intervals (such as by division packet).

In addition, in some embodiments, the end of each Wi-Fi AP transmission 100 aligns with the end of LTE uplink interval 108.This alignment causes each Wi-Fi to reply (ACK) 104(being sent to Wi-Fi AP equipment 24 from Wi-Fi STA32) received during LTE downlink interval 112.

Wi-Fi receiver in equipment 24 can be allowed to operate during LTE downlink interval 112.When Wi-Fi pulse train 116 is received time, the Wi-Fi AP in equipment 24 should transmit ACK pulse train 120.The ACK pulse train transmitted can disturb the reception of LTE down link.In some embodiments, the Wi-Fi AP(BB processor 48 in equipment 24) pass through in lower power output level and ACK120 may be transmitted at lower (more sane) Modulation and Coding Scheme (MCS) to overcome this problem.

Additionally or selectively, LTE BB processor 44 can alleviate the interference that the ACK120 as a part for LTE down-link reception causes.Alleviating like this is possible, and such as, due to the known ACK waveform of equipment 24 and relevant parameter, and the duration of ACK120 is relatively short.LTE receiver in this execution mode is apprised of the parameter of ACK waveform in advance and cancels this known interference in its demodulate/decode process.

In alternate embodiments, LTE TD frame pattern comprises the limited gap between uplink interval 108 and downlink interval 112.These gaps can be used to transmit Wi-Fi ACK message from the Wi-Fi AP equipment 24 and do not cause interference.

Coexisting between juxtaposed TD-LTE UE and WI-FI AP and neighbouring WI-FI stands

Fig. 5 is the block diagram of the LTE/Wi-Fi communication system 130 schematically shown according to another embodiment of the invention.In system 130, communication equipment 134 uses TD-LTE and LTE BS(eNodeB) 138 communication and simultaneously use Wi-Fi communicate with one or more Wi-Fi STA.In this example, equipment 134 communicates with neighbouring STA146 with remote STA142.

Equipment 134 such as can be included in the portable router or smart mobile phone with LTE and Wi-Fi AP function.Although execution mode described here relates to LTE and Wi-Fi, in the teledata network that disclosed technology can be applied to other similarly or WLAN, as above about described by Fig. 1.

Equipment 134 comprises antenna 35 and RF front end 40, is similar to the equipment 24 of above-mentioned Fig. 1.Equipment 134 has comprised the LTE BB processor 150 of TD-LTE UE effect and has played the Wi-Fi BB processor 154 of WI-FI AP effect.In some embodiments, BB processor 150 is communicated mutually by coexistence interface with 154.

In the present embodiment, STA146 closely equipment 134 is located, and such as, is located with the distance being less than 1m.In the present context, term " closely " is even if refer to do not have frequency overlap between them, and the LTE receiver in equipment 134 suffers the distance of the interference of the Wi-Fi reflector from STA146.Such as, STA146 can transmit the outer glitch of the band falling into LTE frequency band or noise and cause interference at closely place.

STA146 can comprise the Wi-Fi station of such as net book, smart mobile phone, panel computer, laptop computer or other applicable type any.Because STA146 and equipment 134 are closely, the interference that Wi-Fi and LTE in equipment 134 is received can be caused, and to the interference that the Wi-Fi in neighbouring Wi-Fi STA146 receives.Description below provides the exemplary coexistence scheme for alleviating this interference.

Disclosed technology concentrates on BB processor 150 and 154(is, juxtaposed TD-LTE UE and Wi-Fi AP in equipment 134) between the coordination of protocol level, for reducing the interference of neighbouring Wi-Fi STA146 and the interference from neighbouring Wi-Fi STA146.The supposition on basis is that STA146 need not be designed to coexist, such as, about the linearity and the reflector transmitting of receiver.In equipment 134, juxtaposed TD-LTE UE and Wi-Fi AP is assumed to be and such as uses enough filtering to coexist in RF front end 40.This filtering is assumed to be and overcomes the interference being sent to the Wi-Fi reception of BB processor 154 from the LTE of BB processor 150 and the interference received from the LTE that the Wi-Fi of BB processor 154 is sent to BB processor 150.

In such an arrangement, several different jamming pattern can occur, and is summarized as follows in the following table:

As can be seen from the table, the principal mode of interference is sent to from the Wi-Fi of STA146 to receive at the LTE of equipment 134.

Because the distance between the Wi-Fi AP in STA146 and equipment 134 is very little, STA146 can transmit with high modulation encoding scheme (MCS) on Wi-Fi channel, and therefore the burst duration of Wi-Fi transmission is relatively short.In some embodiments, the Wi-Fi pulse train that this feature can make STA146 transmit is adapted within (relatively short) LTE UL and DL interval (being typically about 2.5ms).

Fig. 6 is the figure that the timing that LTE and Wi-Fi according to embodiments of the present invention transmits is shown.This figure describes the co-existence schemes of illustration, and equipment 134 uses the interference which reducing the LTE reception being sent to BB processor 150 from the Wi-Fi of neighbouring STA146.

The top of Fig. 6 shows TD-LTE UE(BB processor 150) frame pattern, the middle part of figure shows the Wi-Fi AP(BB processor 154 in equipment 134) operation and the bottom of figure show the operation of neighbouring Wi-Fi STA146.

BB processor 150 operates in the alternate mode at DL interval 160 and UL interval 164.UL guard interval 168 is inserted between each DL interval 160 and UL interval 164 subsequently.In embodiments, DL interval 160 is identical with UL interval 164 size, is namely the ratio of 50%/50% between UL time and DL time.In this embodiment, each DL interval and each UL interval is about 2.2ms and guard interval 168 is about 0.6ms.As selection, any value that other is applicable to can be used.

In some embodiments, juxtaposed Wi-Fi AP(BB processor 154) Wi-Fi time reference is synchronized to the LTE frame time benchmark of BB processor 150.BB processor 154 operates based on its Wi-Fi of LTE structure dispatching, as described below.During DL interval 160, BB processor 154 can transmission signal to STA146 in case the flow stoping STA146 (such as, use CTS-to-self message or any technology that other is applicable to) until the beginning of at least next UL guard interval 168, to prevent the interference that the LTE of the processor 150 from STA146 to BB receives.

The prevention interval 172 that wherein STA146 is prevented from transmitting is illustrated at the middle part of figure.Can find out in the drawings, the LTE reception period of STA146 namely at BB processor 150 during LTE DL interval 160 does not transmit.The main cause of the interference thus in system 130 is eliminated.

Because this stops, in most of scene, STA146 will start its transmission pulse train during UL guard interval, is transmitted until this point because it stops.Transmit pulse train 192 can the starting point at LTE UL interval 164 subsequently or before or terminate afterwards.In any one situation, pulse train 192 will by AP(BB processor 154) successfully receive.The reception of pulse train 192 is shown as interval 176 in the drawings.

In most cases, due to supposition by between STA146 and equipment 134 close to enable high MCS, pulse train 192 by before current UL interval 164 end.As explained above, because the high MCS that the communication of STA146 closely between equipment 134, STA146 and equipment 134 can use shortening communication burst and enable them be placed in outside LTE downlink interval 160 realizes.

When received pulse string 192 time, BB processor 154 should make an immediate response with ACK180.Disturb slightly because STA146 can be transmitted by the LTE UL in interval 164 or become insensitive, ACK can use low bit rate to be transmitted.The reception of the ACK176 in STA146 is shown as interval 196.Typically, due to the result transmitted as LTE, the CCA mechanism of STA146 can be prevented from, and STA146 transmits new pulse train by not starting during identical LTE UL interval 164.CCA is shown as interval 200 during stoping.

In some embodiments, Wi-Fi AP(BB processor 154 in equipment 134) can arrange its transmission 184 during LTE UL interval 164 or start during LTE DL interval 160 subsequently, make the ACK(from the expection of STA146 be denoted as interval 208 and be in interval 188 at AP to be received as long as transmit to be scheduled to) calculated with during LTE UL interval 164 received (current UL interval 164 or interval 164 subsequently).

In some embodiments, if occurred during being transmitted in UL interval 164, AP(BB processor 154) MCS of transmission 184 can be reduced, to explain that STA146 can not process the high MCS that transmits from (BB processor 150) the LTE UL situation together with high interference.

In some embodiments, AP(BB processor 154) duration that can extend given transmission 184 makes it more than LTE DL interval 160, so that ACK208 will be received during LTE UL interval 164.Such as, AP by reduce wittingly use in transmission MCS, by virtual information byte being added to transmission, by connecting multiple packet to form the transmission 184 of independent length or to use any technology that other is applicable to extend duration of transmission 184.

In some embodiments, when LTE UL interval 164 closes to an end, AP(BB processor 154) or start new transmission 184 or stop at LTE DL interval 160 subsequently STA to transmit (using CTS-to-self process or any technology that other is applicable to).This stops (interval 172) should to terminate or after it starts at next UL guard interval 168.AP can arrange to stop the end at interval 172 to be followed immediately and transmit pulse train 184, and pulse train 184 is own or terminate at the end at DL interval 160 or terminate during UL guard interval 168.In this case, corresponding ACK208 is received during UL guard interval or during UL interval 164 subsequently.

In some embodiments, the Wi-Fi AP(BB processor 154 of equipment 134) stop or postpone its transmission to STA146, response message can not be transmitted to these transmission during the downlink interval that connects at LTE of STA146.This technology prevents the interference received from the LTE of ACK to the BB processor 150 transmitted by STA146.

In some embodiments, AP(BB processor 154) and not near AP (and therefore do not cause interference that LTE UE is received) other Wi-Fi STA(such as, STA142) communication.Such as, BB processor 154 can be arranged in any time (such as, during LTE UL interval 164 or DL interval 160) and communicates with other STA.In time stoping Wi-Fi channel (during the interval 172 that the STA146 near stoping transmits), BB processor 154 low-power can transmit prevention transmission (such as, CTS-to-self), optionally only to stop neighbouring STA146 but still to allow other STA to communicate.

In some embodiments, if LTE DL signal is received in the level that BB processor 150 is exceeding a certain critical value, BB processor 154 can be prevented and stop Wi-Fi STA during LTE DL interval 160.

In some cases, LTE UL transmission signal (in interval 164) is lower than a certain critical value, and the CCA mechanism of result STA146 is not activated.In some embodiments, BB processor 154 transmits (or prevention) to prevent STA146 from starting new transmission pulse train 192 to protect LTE DL interval 160 by initiating clear and definite Wi-Fi.In these embodiments, prevention operation should have precedence over the trial that STA146 transmits another pulse train 192, such as, by amendment AP random back off procedure (controlling (MAC) agreement according to Carrier Sense Multiple Access (CSMA) media interviews of Wi-Fi), this priority can be realized.

In some embodiments, the prevention scheme of Fig. 6 can be combined with the scheme based on BSR of above Fig. 2-4, to create known (the being often long) period not having LTE UL data to transmit.

In some embodiments, LTE UE(BB processor 150) can be required periodically to perform monitoring BS(eNodeB around) measurement.In these embodiments, LTE UE(BB processor 150) juxtaposed AP(BB processor 154 can be notified) and measure interval, and AP can stop neighbouring STA146 to transmit in these interims.This other protection mechanism also can be employed during the LTE of sensitivity, such as between the handover period or for known period of transfer system control information.

Juxtaposed coexisting between WI-FI and the LTE equipment of SPS/DRX pattern operation

LTE specification defines UE and operates in the sparse mode of active stage so that two kinds of pattern-semi-continuous schedulings (SPS) of scheduling overhead and/or saving battery electric power and discontinuous reception (DRX).SPS and DRX is described in detail in the 5th chapters and sections of 3GPP TS36.321 cited above.In two kinds of patterns (it can be used alone or be applied to identical UE together), UE is preconfigured to be the pattern that active stage and nonmobile phase replace.

Pattern between UE and BS by synchronously so that UE can predict in advance in which LTE subframe, up link or downlink activity can not occur.Thus, in active stage, when needed, UE can wake up and communicate with BS, and keeps park mode at nonmobile phase.Such as, pattern can define every 20ms 1ms active stage, and every 15ms has 5ms active stage, or any pattern that other is applicable to.

Consider the system configuration of above Fig. 1.In some embodiments, the LTEBB processor 44 playing LTE UE effect is configured to operate at SPS and/or DRX mode by BS28.As a part for this configuration, BS uses the pattern configurations BB processor 44 of active stage and the nonmobile phase expected.BB processor 44 by coexistence interface be Wi-Fi BB processor 48(its can play a part or STA or AP) this pattern and possible additional information are provided.BB processor 48 uses this information configuration Wi-Fi to operate to reduce interference mutually.

In various embodiments, BB processor 48 its Wi-Fi transmission configurable and/or the transmission of relative Wi-Fi end points (STA or AP32).Configuration AP or STA can comprise configuration Wi-Fi and transmit and/or accept function.This configuration can be used for the interference reducing the LTE reception being sent to BB processor 44 from the Wi-Fi of BB processor 48, and/or from the interference that the Wi-Fi that the LTE of BB processor 44 is sent to BB processor 48 receives.For the ease of this operation, BB processor 44 typically via coexistence interface for BB processor 48 provide LTE frame timing.Wi-Fi BB processor 48 by its internal time reference synchronization to the LTE frame provided by BB processor 44 regularly.

Typically, BB processor 44 is in advance for BB processor 48 supplies a pattern and relevant information operates to allow BB processor 48 to have time enough to configure Wi-Fi.The information provided can comprise, such as, which subframe is defined as movable and which subframe is defined as inactive, the subframe being used to UE transmission (up link) and which activity will be used to UE and receive (down link) by the subframe of which activity, the signal power level transmitting and receive, the kind of the signal that transmit or receive and/or any information that other is applicable to.

In the execution mode of illustration, BB processor 48 arranges based on the pattern of LTE activity phase and nonmobile phase the timing that Wi-Fi transmits.Timing can or the local transmission (such as, the using CTS-to-self process) transmission that is used for BB processor 48 or long-range setting being set and being used for relative AP or STA32, or both to have.

In a kind of execution mode of illustration, BB processor 48 can stop any Wi-Fi to transmit during the LTE of activity.In other embodiments, the size of space that BB processor 48 can be thinner stops Wi-Fi to transmit, and such as, only prevents the Wi-Fi from equipment 24 from transmitting during the active stage of the reception for BB processor 44.

In some embodiments, LTE UE(BB processor 44) be required periodically to perform monitoring BS(eNodeB around) measurement.In these embodiments, LTE UE will measure interval notification to juxtaposed Wi-Fi equipment (BB processor 48), and BB processor 48 decreases interference in the interim of report.

In some embodiments, active stage/pattern of nonmobile phase adjusted according to the various system parameterss on LTE and/or Wi-Fi channel, such as based on quantity and/or any system parameters that other is applicable to of current delivering power, the MCS of current use, the received power of the transmission of opposite side, the flow of transmission.

Fig. 7 is the flow chart of the method coexisted for LTE/Wi-Fi schematically shown according to another execution mode of the present invention.At configuration step 210, method starts from BS28 according to SPS and/or DRX mode with the LTE UE(BB processor 44 in the mode setting device 24 of phase activity time and inactive time phase).

At synchronizing step 214, Wi-Fi BB processor 48 by the LTE frame timing of its internal time reference synchronization to LTE BB processor 44.In pattern notification step 218, LTE BB processor 44 provides the pattern of phase activity time and inactive time phase for Wi-Fi BB processor 48.At Wi-Fi set-up procedure 222, Wi-Fi BB processor 48 based on mode adjustment Wi-Fi operation (its local operation and/or the operation of relative Wi-Fi STA or AP).Adjustment is attempted to reduce or eliminate the interference between LTE and Wi-Fi connection.

The configuration of the equipment 24 and 134 shown in Fig. 1 and 5 is exemplary configuration, and it is purely in order to the cause of clear concept is selected.In alternate embodiments, any Equipments Setting that other is applicable to can be used.Such as, LTE with Wi-Fi communication realizes by the antenna be separated.As another example, the function of BB processor 44 and 48 or BB processor 150 and 154 realizes by independent BB processor.In the present context, the BB processor 44 and 48 of Fig. 1 and the BB processor 150 and 154 of Fig. 5 are collectively referred to as the baseband circuit realizing disclosed technology.Some element of equipment 24 or equipment 134 can use hardware implementing, such as uses one or more application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA).As selection, some elements of equipment 24 or equipment 134 can use software simulating or use the combination of hardware and software element to realize.

In some embodiments, the function of equipment 24 or equipment 134 can use all-purpose computer to realize, its with software programming to realize function described here.Software is Electronically downloaded to computer by network, and such as, it can selectively or additionally be provided and/or be stored on permanent tangible medium, such as magnetic memory, optical memory or electronic memory.

Should be understood that execution mode described above is set forth by way of example, and the invention is not restricted to the content that illustrates especially above and describe.On the contrary, scope of the present invention comprises the combination of above-described various feature and sub-both combinations, also comprise their variants and modifications, those skilled in the art will make these variants and modifications after the aforesaid description of reading, and does not announce these variants and modifications in prior art.The file be incorporated to by reference in present patent application will be regarded as a application's indispensable part, except any term defined in the file that is incorporated at these conflicts mutually with the definition explicitly or implicitly made in this specification, should only consider outside the definition in this specification.

Claims (52)

1. the method for communicating, it comprises:
In a wireless device, set up first with the base station BS of long distance wireless data network and be connected, and on WLAN (wireless local area network) WLAN, set up the second connection;
Select to be used for connecting the time interval of carrying out communicating by described second in described wireless device;
When the time interval selected by preparing, do not have data to treat from described wireless device transmission by BS report described in the forward direction in the described time interval, described BS is prevented and dispatches by the described first data transmission of connection from described wireless device to described BS during the described time interval; And
During the described time interval, use described wireless device to be connected by described second on described WLAN communicate.
2. method according to claim 1, even if wherein when some data are waited to be sent to described BS time, or reports on the implementation do not have data to be passed, to cause described BS to dispatch transmit data to be passed outside the described time interval.
3. method according to claim 1, also comprises, and in order to prepare to the end in the described time interval, treats to transmit from described wireless device to described BS report data.
4. method according to claim 3, wherein reports that described data are to be passed and comprises the data volume that report is different from the actual size of data to be passed, to control the size of the transmission of dispatching.
5. according to claim 1-4 any one described in method, wherein said long distance wireless data network is according to Long Term Evolution LTE standard operation, and wherein report does not have data to send buffer status reporting BSR message to be passed comprising.
6. according to claim 1-4 any one described in method, also comprise by be passed alternately to described BS report data and do not have data to be passed, be applied in described first connect to connect with described second between the communication pattern that replaces.
7. according to claim 1-4 any one described in method, suppressed before and after the time interval being also included in described selection by described second communication connected.
8. according to claim 1-4 any one described in method, be wherein included in described BS report the time considering the dispatch delay that described first connects and send report message to described BS.
9. a wireless device, it comprises:
Radio frequency front end, it is configured to exchange RF signal to communicate on long distance wireless data network with WLAN (wireless local area network) WLAN; And
Baseband circuit, it is configured to set up to be connected with first of the BS of described long distance wireless data network by described RF front end connect with second on described WLAN, to select the time interval being used for connecting communication by described second, with prepare selected by the time interval time, data are not had to treat from described wireless device transmission by BS report described in the forward direction in the described time interval, described BS is prevented and dispatches by the described first data transmission of connection from described wireless device to described BS during the described time interval, and during the described time interval, use described wireless device to connect communication by described second on described WLAN.
10. wireless device according to claim 9, even if wherein said baseband circuit is configured to when some data are waited to be sent to described BS time, or report does not have data to be passed, to make described BS dispatch transmission to data to be passed outside the described time interval.
11. wireless devices according to claim 9, wherein said baseband circuit is configured to, in order to prepare to the end in the described time interval, treat to transmit from described wireless device to described BS report data.
12. wireless devices according to claim 11, wherein said baseband circuit is configured to report the data volume of the actual size being different from data to be passed to control the size of the transmission of dispatching.
13. according to claim 9-12 any one described in wireless device, wherein said long distance wireless data network is according to Long Term Evolution LTE standard operation, and wherein said baseband circuit is configured to report that not have data to be passed by sending buffer status reporting BSR message.
14. according to claim 9-12 any one described in wireless device, wherein said baseband circuit is configured to by be passed alternately to described BS report data and do not have data to be passed, be applied in described first connect to connect with described second between the communication pattern that replaces.
15. according to claim 9-12 any one described in wireless device, wherein said baseband circuit is configured to suppress before and after the time interval of described selection by described second communication connected.
16. according to claim 9-12 any one described in wireless device, wherein said baseband circuit is configured to, considering for the described first time of dispatch delay connected, send report message to described BS, and described report message report does not have data to be passed.
17. 1 kinds of methods for communicating, it comprises:
In a wireless device, be connected in the uplink interval for transmitting to the base station BS of long distance wireless data network with for setting up first with described BS in the alternative series of downlink interval that receives from described BS;
In described wireless device, be connected the station simultaneously setting up the WLAN (wireless local area network) WLAN located with closely described wireless device with described first second is connected; And
By signal is sent to described station to transmit during standing in described down link interval described in stoping from described wireless device, stand in the described second transmission connected described in preventing to the interference of the reception that described BS connects described first.
18. methods according to claim 17, wherein prevent described interference from comprising and stop described wireless device to transmit to described station in described second connection, to prevent described station from transmitting response message to described wireless device during described down link interval.
19. methods according to claim 17 or 18, wherein prevent described interference from comprising and CTS – to-self message are sent to described station.
20. methods according to claim 17 or 18, wherein prevent described interference from comprising scheduling from described wireless device to the transmission at described station so that the corresponding response from described station occurs during the described first uplink interval connected.
21. methods according to claim 20, wherein scheduling transmit comprise this transmission is set relevant parameter so that described response occurs during described uplink interval.
22. methods according to claim 21, wherein said parameter comprises at least one parameter type being selected from the set type be made up of the duration of described transmission and time started.
23. methods according to claim 17 or 18, wherein prevent described interference from comprising and use Modulation and Coding Scheme MCS to communicate with described station, described Modulation and Coding Scheme MCS is selected as the transmission at described station is placed in outside described downlink interval.
24. methods according to claim 17 or 18, also comprise and use Modulation and Coding Scheme MCS to transmit to described station, described Modulation and Coding Scheme MCS is selected to take into account described wireless device by described first transmission connected to the interference of described station by described second reception connected.
25. methods according to claim 17 or 18, also be included in the power level lower than the normal power level for data being sent to described station and transmit response message to described station, and the Modulation and Coding Scheme MCS arranging described response message is to mate described power level.
26. methods according to claim 17 or 18, wherein prevent described interference from comprising and transmit described signal by a power level, and described power level is selected as stoping described station but avoids stoping not other station of closely described wireless device.
27. methods according to claim 17 or 18, wherein prevent described interference to be included in described wireless device and the time reference that described second connects are synchronized to the described first frame time benchmark connected.
28. 1 kinds of wireless devices, it comprises:
Radio frequency front end, it is configured to exchange RF signal to communicate with on WLAN (wireless local area network) WLAN on long distance wireless data network; And
Baseband circuit, it is configured to be set up in the uplink interval for transmitting to the base station BS of described long distance wireless data network with the alternative series of the downlink interval for receiving from described BS by described RF front end be connected with first of described BS, and be connected second of the station side by side setting up the described WLAN located with closely described wireless device with described first and be connected, and by signal is sent to described station to transmit during standing in described down link interval described in stoping from described wireless device, the described second transmission connected is stood in the interference of the reception that described BS connects described first described in preventing.
29. wireless devices according to claim 28, wherein said baseband circuit is configured to stop described wireless device to connect by described second and transmits to described station, to transmit response message during standing in described down link interval described in preventing to described wireless device.
30. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to stop described station by CTS-to-self message is sent to described station.
31. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to dispatch from described wireless device to the transmission at described station so that the corresponding response from described station occurs during the described first uplink interval connected.
32. wireless devices according to claim 31, wherein said baseband circuit is configured to arrange the corresponding parameter of described transmission so that described response occurs during described uplink interval.
33. wireless devices according to claim 32, wherein said parameter comprises at least one parameter type being selected from the set type be made up of the duration of described transmission and time started.
34. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to use Modulation and Coding Scheme MCS to communicate with described station, and described Modulation and Coding Scheme MCS is selected as the transmission at described station is placed in outside described downlink interval.
35. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to use Modulation and Coding Scheme MCS to transmit to described station, and described Modulation and Coding Scheme MCS is selected to take into account described wireless device by described first transmission connected to the interference of described station by described second reception connected.
36. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to transmit response message to described station at the power level lower than the normal power level for data being sent to described station, and the Modulation and Coding Scheme MCS arranging described response message is to mate described power level.
37. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to transmit described signal by a power level, and described power level is selected as stoping described station but avoids stoping not other station of closely described wireless device.
38. wireless devices according to claim 28 or 29, wherein said baseband circuit is configured to the time reference that described second connects to be synchronized to the described first frame time benchmark connected.
39. 1 kinds of methods for communicating, it comprises:
In a wireless device, set up first with the base station BS of long distance wireless data network and be connected, and be connected with described first and side by side on WLAN (wireless local area network) WLAN, set up the second connection;
Connect by described first and communicate with described BS with the mode of the pattern of nonmobile phase with predefine active stage; And
Be based upon the pattern that described first connects predefined described active stage and nonmobile phase, configure by described second transmission connected, to reduce the interference between described first connection with described second connection.
40. according to method according to claim 39, and wherein said first connects according to Long Term Evolution LTE standard operation, and wherein said mode comprises at least one mode being selected from the prescription formula be made up of semi-continuous scheduling SPS and discontinuous reception DRX.
41. according to method according to claim 39, wherein configures during described transmission was included in for the described first active stage connected and prevents the transmission connected by described second from occurring.
42. according to claim 39-41 any one described in method, wherein configure described transmission comprise control described wireless device by described second transmission connected.
43. according to claim 39-41 any one described in method, wherein configure described transmission and comprise and control described wireless device and connect the transmission of the opposite endpoint communicated with by described second.
44. according to claim 39-41 any one described in method, wherein configure described transmission and comprise and transmitting described at least one state modulator being selected from the one group of parameter be made up of following item:
Be allocated for the active stage that up link transmits and the mark being allocated for the active stage that down link transmits;
For the power level of described transmission; And
For the signal type of described transmission.
45. according to claim 39-41 any one described in method, wherein configure described transmission be included in described wireless device by described second connect time reference be synchronized to described first connect frame time benchmark.
46. 1 kinds of wireless devices, it comprises:
Radio frequency front end, it is configured to exchange RF signal to communicate with on WLAN (wireless local area network) WLAN on long distance wireless data network; And
Baseband circuit, it is configured to be set up by described RF front end be connected with first of the base station BS of described long distance wireless data network, and be connected with described first and side by side set up second on described WLAN and connect, communicate with described BS with the mode of the pattern of nonmobile phase with predefine active stage to connect by described first, and be based upon described first and connect the pattern configurations of predefined described active stage and nonmobile phase by described second transmission be connected, to reduce described first the connecting interference between connecting with described second.
47. wireless devices according to claim 46, wherein said first connects according to Long Term Evolution LTE standard operation, and wherein said mode comprises at least one mode being selected from the prescription formula be made up of semi-continuous scheduling SPS and discontinuous reception DRX.
48. wireless devices according to claim 46, wherein said baseband circuit be configured to prevent by described second connect be transmitted in for the described first active stage connected during occur.
49. according to claim 46-48 any one described in wireless device, wherein said baseband circuit be configured to by control described wireless device by described second connect send configuration described transmission.
50. according to claim 46-48 any one described in wireless device, wherein said baseband circuit be configured to by control described wireless device by described second connect the opposite endpoint communicated with send configuration described transmission.
51. according to claim 46-48 any one described in wireless device, at least one parameter that wherein said baseband circuit is configured to based on being selected from the one group of parameter be made up of following item configures described transmission:
Be allocated for the active stage that up link transmits and the mark being allocated for the active stage that down link transmits;
For the power level of described transmission; And
For the signal type of described transmission.
52. according to claim 46-48 any one described in wireless device, wherein said baseband circuit be configured to by described second connect time reference be synchronized to described first connect frame time benchmark.
CN201280004699.8A 2011-01-06 2012-01-02 Lte/wi-fi coexistence CN104247468A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US201161430193P true 2011-01-06 2011-01-06
US61/430,193 2011-01-06
PCT/IB2012/050015 WO2012093349A2 (en) 2011-01-06 2012-01-02 Lte/wi-fi coexistence

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