CN104717750B - A kind of method for transmitting signals and device - Google Patents

Abstract

The present invention relates to the field of communication technology, in particular to a signal transmission method and device, which are used to solve the problem of low frequency spectrum utilization of WLAN frequency bands in the prior art. The signal transmission method provided by the embodiment of the present invention includes: the AP determines the time when the wireless local area network WLAN frequency band is used to transmit the long-term evolution LTE signal; the AP indicates the determined time to the WLAN mode according to the WLAN channel sharing configuration command sent by the eNB The down STA, so that the STA stops transmitting the WLAN signal within the determined time. By adopting the embodiment of the present invention, the WLAN frequency band can be used to transmit LTE signals, expanding the available frequency resources of LTE. At the same time, the STA stops transmitting WLAN signals during the time when the WLAN frequency band is used to transmit LTE signals, thereby avoiding the interference between LTE signals and WLAN signals. interference between.

Description

A signal transmission method and device

technical field

The present invention relates to the field of communication technology, in particular to a signal transmission method and device.

Background technique

With the rapid development of smart terminals and mobile Internet applications, mobile data traffic is surging at an incalculable rate. In order to effectively alleviate traffic pressure and continuously promote the development of mobile communication services, more and more operators around the world choose to vigorously develop Wireless Local Area Networks (WLAN); In network deployment, Long Term Evolution (LTE) technology has greater technical advantages in terms of data rate, etc. LTE will be widely used in indoor and outdoor hotspot coverage; in order to meet user needs, operators have adopted The integration of WLAN and LTE has been brought into their respective network development plans.

WLAN uses unlicensed (unlicensed) frequency bands (including 2.4GHz and 5GHz frequency bands) to provide local data access. In the existing technical solutions for the integration of LTE and WLAN, WLAN technology is used for data transmission in unlicensed frequency bands. LTE technology only The application performs data transmission in the LTE frequency band. Since the spectrum utilization rate of LTE technology is higher than that of WLAN technology, if the above-mentioned unlicensed frequency band is applied to LTE technology at the same time, it can not only improve the spectrum utilization rate of the unlicensed frequency band and the data rate available to users, but also expand the available frequency resources of LTE.

At present, in the integrated application of WLAN and LTE, there is no plan to simultaneously apply the above-mentioned unlicensed frequency band to LTE technology. Moreover, if LTE technology is simply applied to the above-mentioned unlicensed frequency band for signal transmission, there will inevitably be a gap between LTE and WLAN signals. Interference between.

Contents of the invention

Embodiments of the present invention provide a signal transmission method and device, which are used to solve the problem of low frequency spectrum utilization of WLAN frequency bands in the prior art.

A signal transmission method provided by an embodiment of the present invention includes:

The access point AP determines the time when the wireless local area network WLAN frequency band is used to transmit long-term evolution LTE signals according to the wireless local area network WLAN channel sharing configuration command sent by the evolved base station eNB;

The AP indicates the determined time to the station STA working in the WLAN mode, so that the STA stops transmitting the WLAN signal within the determined time.

Optionally, the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

After the AP determines the time for the WLAN frequency band to transmit LTE signals according to the WLAN channel sharing configuration command sent by the eNB, it further includes:

The AP feeds back a WLAN channel sharing configuration response to the eNB, and the WLAN channel sharing configuration response includes an indication that LTE and WLAN signals are allowed to share the WLAN channel and LTE communication parameter configuration confirmed by the AP.

Optionally, the sharing method includes: the AP uses the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN point coordinator function;

The AP indicates the determined time to the STA working in WLAN mode, including: the AP indicates the non-competition period CFP to the STA through the non-competition parameter set CF Parameter Set of the beacon frame; the CF Parameter Set Including the time when the WLAN frequency band is used for transmitting LTE signals.

Optionally, the sharing method includes: the AP uses part of the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN hybrid coordinator function;

The AP indicates the determined time to the station STA working in WLAN mode, including: the AP sends transmission opportunity TXOP information to the UE through a non-contention polling CF-Poll frame; the TXOP information includes the WLAN frequency band The time used to transmit the LTE signal.

Optionally, the sharing method includes: the AP uses part of the contention period CP of the WLAN channel for LTE communication based on the channel reservation mechanism of the WLAN distributed coordination function;

The AP indicates the determined time to the station STA working in the WLAN mode, including: the AP sends a request to send a request to send frame RTS to the user equipment UE working in the LTE mode, and receives the permission to send the frame RTS fed back by the UE frame CTS, so that the STA determines the time for the WLAN frequency band to transmit LTE signals according to the detected RTS and the duration duratiaon field in the CTS; wherein, the duratiaon field includes the WLAN frequency band used for transmitting LTE signals time.

Optionally, the LTE communication parameter configuration includes one or more of the start time of the LTE communication, the duration of the communication, and the maximum transmission power.

A signal transmission method provided by another embodiment of the present invention includes:

The station STA working in the wireless local area network WLAN mode receives the instruction information sent by the access point AP, and the instruction information includes the time when the WLAN frequency band is used to transmit the long-term evolution LTE signal;

The STA stops transmitting WLAN signals on the WLAN frequency band within the time period when the WLAN frequency band included in the indication information is used for transmitting LTE signals.

Optionally, the indication information includes: a non-competition parameter set CF Parameter Set of the beacon frame;

The STA stops transmitting WLAN signals on the WLAN frequency band within the time period when the WLAN frequency band included in the indication information is used to transmit LTE signals, including: the STA transmits LTE signals indicated by the CF Parameter Set During the non-competition period CFP, stop transmitting WLAN signals on the WLAN frequency band.

Optionally, the indication information includes: transmission opportunity TXOP information in a non-contention polling CF-Poll frame;

The STA stops transmitting WLAN signals on the WLAN frequency band within the time period when the WLAN frequency band included in the indication information is used for transmitting LTE signals, including: the STA transmits LTE signals during the period indicated by the TXOP information Stop transmitting WLAN signals on the WLAN frequency band within the time period.

Optionally, the indication information includes: a request to send frame RTS and a permission to send frame CTS;

The STA stops transmitting WLAN signals on the WLAN frequency band during the time that the WLAN frequency band included in the indication information is used to transmit LTE signals, including:

The STA stops transmitting the WLAN signal on the WLAN frequency band within the time indicated by the duration duration of the RTS and the CTS duratiaon field for transmitting the LTE signal.

Optionally, the STA stops transmitting WLAN signals on the WLAN frequency band, including:

The STA sets a network allocation vector NAV according to the time when the WLAN frequency band is used for transmitting LTE signals, so as to avoid WLAN signal transmission during the time when the WLAN frequency band is used for transmitting LTE signals.

A signal transmission method provided by another embodiment of the present invention includes:

The user equipment UE working in the long-term evolution LTE mode receives the request-to-send frame RTS sent by the access point AP;

The UE feeds back a clear to send frame CTS to the AP; the duration duration field of the RTS and CTS includes the time for the WLAN frequency band to transmit LTE signals;

The UE performs LTE signal transmission according to the time that the WLAN frequency band included in the duratiaon field is used for transmitting LTE signals.

A signal transmission method provided by another embodiment of the present invention includes:

The evolved base station eNB determines the wireless local area network WLAN channel sharing configuration command; the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

The eNB sends the determined WLAN channel sharing configuration command to the access point AP.

Optionally, the sharing method includes: the AP uses the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN point coordinator function; or,

The sharing method includes: the AP uses part of the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN hybrid coordinator function; or,

The sharing method includes: the AP uses a part of the contention period CP of the WLAN channel for LTE communication based on the channel reservation mechanism of the WLAN distributed coordination function;

Optionally, the LTE communication parameter configuration includes one or more of the start time of the LTE communication, the duration of the communication, and the maximum transmission power.

A signal transmission device provided by an embodiment of the present invention, the device is set in an access point AP, including:

A determining module, configured to determine the time when the wireless local area network WLAN frequency band is used to transmit long-term evolution LTE signals according to the wireless local area network WLAN channel sharing configuration command sent by the evolved base station eNB;

The indication module is configured to indicate the time determined by the determination module to the station STA working in the WLAN mode, so that the STA stops transmitting WLAN signals within the determined time.

Another embodiment of the present invention provides a signal transmission device, which is set in a station STA working in a WLAN mode, including:

The receiving module is configured to receive indication information sent by the access point AP, where the indication information is used to indicate the time when the WLAN frequency band is used to transmit long-term evolution LTE signals;

A processing module, configured to stop transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information that the WLAN frequency band is used for transmitting LTE signals.

Another embodiment of the present invention provides a signal transmission device, which is set in a user equipment UE working in a long-term evolution LTE mode, including:

The transceiver module is configured to receive the request to send frame RTS sent by the access point AP, and feed back the clear to send frame CTS to the AP; the duration duratiaon field of the RTS and CTS includes the time for the WLAN frequency band to transmit LTE signals ;

A transmission module, configured to perform LTE signal transmission according to the time when the WLAN frequency band included in the duratiaon field is used for transmitting LTE signals.

Another embodiment of the present invention provides a signal transmission device, the device is set in the evolved base station eNB, including:

A determination module, configured to determine a wireless local area network WLAN channel sharing configuration command; the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

A sending module, configured to send the WLAN channel sharing configuration command determined by the determining module to the access point AP.

In the embodiment of the present invention, after the AP determines the time for the WLAN frequency band to transmit LTE signals according to the wireless local area network WLAN channel sharing configuration command sent by the evolved base station eNB, it indicates the determined time to the station STA working in the WLAN mode, thereby The STA can be made to stop transmitting WLAN signals within a certain period of time. By adopting the embodiment of the present invention, the WLAN frequency band can be used to transmit LTE signals. Since the spectrum utilization rate of LTE technology is higher than that of WLAN technology, the WLAN frequency band is applied to LTE technology. , not only can improve the spectrum utilization rate of the WLAN frequency band and the data rate available to users, but also expand the available frequency resources of LTE. Moreover, in the embodiment of the present invention, the STA stops transmitting during the time when the WLAN frequency band is used to transmit LTE signals WLAN signal, so as to avoid interference between LTE signal and WLAN signal.

Description of drawings

FIG. 1 is a flowchart of a signal transmission method provided by Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of a scenario of occupying an unlicenced frequency band for LTE communication;

FIG. 3 is a schematic diagram of channel sharing between LTE and WLAN through CFP/CP alternate periods provided by an embodiment of the present invention;

4 is a schematic diagram of occupying a WLAN frequency band for LTE communication during part of the CP time in an embodiment of the present invention;

FIG. 5 is a flowchart of a signal transmission method provided by Embodiment 2 of the present invention;

FIG. 6 is a flowchart of a signal transmission method provided by Embodiment 3 of the present invention;

FIG. 7 is a flowchart of a signal transmission method provided by Embodiment 4 of the present invention;

FIG. 8 is a flowchart of a signal transmission method provided by Embodiment 5 of the present invention;

FIG. 9 is a schematic structural diagram of a signal transmission device provided by Embodiment 1 of the present invention;

FIG. 10 is a schematic structural diagram of a signal transmission device provided in Embodiment 2 of the present invention;

FIG. 11 is a schematic structural diagram of a signal transmission device provided by Embodiment 3 of the present invention;

FIG. 12 is a schematic structural diagram of a signal transmission device provided by Embodiment 4 of the present invention.

Detailed ways

In the embodiment of the present invention, after determining the time for the WLAN frequency band to transmit LTE signals, the AP indicates the determined time to the station STA working in the WLAN mode, so that the STA can stop transmitting the WLAN signal within the determined time, By adopting the embodiment of the present invention, the WLAN frequency band can be used to transmit LTE signals. Since the spectrum utilization rate of the LTE technology is higher than that of the WLAN technology, applying the WLAN frequency band to the LTE technology can not only improve the spectrum utilization rate of the WLAN frequency band and the user can obtain The data rate can also expand the available frequency resources of LTE. Moreover, in the embodiment of the present invention, the STA stops transmitting WLAN signals during the time when the WLAN frequency band is used to transmit LTE signals, thereby avoiding the interference between LTE signals and WLAN signals. interference.

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1, it is a flow chart of a signal transmission method provided by Embodiment 1 of the present invention, including the following steps:

S101: The access point (Access Point, AP) determines the time for the WLAN frequency band to transmit LTE signals according to the wireless local area network WLAN channel sharing configuration command sent by the evolved base station eNB;

S102: The AP indicates a determined time to a station (Station, STA) working in WLAN mode, so that the STA stops transmitting WLAN signals within the determined time.

In the embodiment of the present invention, in order to improve the spectrum utilization rate of the unlicensed frequency band, the unlicensed frequency band of WLAN is applied to LTE communication. Spectrum resources will also increase the interference between systems. Based on this, the embodiment of the present invention provides a way for LTE and WLAN to share WLAN channels. For example, LTE small cells (small cells) and WLANs can be deployed in a certain area, where WLAN APs can be deployed by the LTE core network or Controlled by an evolved base station (evolved Node B, eNB), the LTE and the WLAN network share a WLAN channel. When the eNB and WLAN share the WLAN channel, LTE communication is only performed within the LTE communication time. LTE communication can only occupy part of the frequency of the WLAN channel to leave a guard band for the adjacent WLAN channel. During non-LTE communication, the eNB and user The device (User Equipment, UE) needs to stop transmitting LTE signals on the WLAN channel.

In the specific implementation process, the eNB can first collect the frequency occupancy of the unlicensed frequency band from the UE and WLAN AP, or it can detect it by itself. If the eNB finds that there are still available idle frequencies on the unlicensed frequency band within its signal coverage, it can Directly occupy this frequency for LTE communication, otherwise, consider sharing the channel with WLAN.

As shown in Figure 2, it is a schematic diagram of a scenario where an unlicensed frequency band is used for LTE communication. In the figure, there are three types of mobile terminals, one is a WLAN STA that only supports WLAN mode, and the other is a UE that does not support an unlicensed frequency band in LTE mode. Although this type of UE does not support working in the unlicensed frequency band in LTE mode, the UE can support working in the unlicensed frequency band in WLAN mode. In this way, the eNB can still offload the service data of the UE through the WLAN network. There is also a It is a UE that supports working in the LTE mode in the unlicensed frequency band, that is, a UE that performs LTE communication in the WLAN frequency band in the embodiment of the present invention. In specific implementation, the eNB can configure the carrier of the LTE frequency band as the main carrier based on the carrier aggregation technology. Configure the carrier in the unlicensed frequency band as the secondary carrier.

In the embodiment of the present invention, the WLAN AP can be an independent network node, or a WLAN AP module integrated in the eNB. If the WLAN AP is an independent network node, the eNB and the WLAN AP can be connected through other network nodes.

Optionally, the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration; after the AP determines the time for the WLAN frequency band to transmit LTE signals according to the WLAN channel sharing configuration command sent by the eNB, it further includes: The AP feeds back a WLAN channel sharing configuration response to the eNB, and the WLAN channel sharing configuration response includes an indication that LTE and WLAN signals are allowed to share the WLAN channel and the LTE communication parameter configuration confirmed by the AP.

In the specific implementation process, when LTE needs to share the channel with WLAN, the eNB can notify the WLAN AP of the time for LTE communication, or the eNB can negotiate with the WLAN AP for the time of LTE communication; the eNB can send the WLAN channel sharing message to the WLAN AP. Configuration command, which can include sharing mode and LTE communication parameter configuration, where the sharing mode can be one of the three sharing modes described below, LTE communication parameter configuration can include the start time of LTE communication, communication duration and maximum transmit power one or more of .

In the specific implementation process, there are three ways for LTE and WLAN to share the WLAN channel, which will be introduced respectively below;

Method 1. Based on the WLAN point coordinator function (PCF, point coordination function), the contention-free period (CFP) of the WLAN channel is used for LTE communication;

Specifically, the AP indicates the determined time to the STA working in WLAN mode, including: the AP indicates the non-competition period CFP to the STA through the non-competition parameter set CF Parameter Set of the beacon frame; The CFParameter Set includes the time when the WLAN frequency band is used for transmitting LTE signals.

In the specific implementation process, the WLAN AP can notify the subordinate WLAN STA of the CFP parameter configuration through the non-competition parameter set (CFParameter Set) of the beacon (beacon) frame, and the STA can update its network allocation vector (NAV ) to avoid transmitting WLAN signals during the CFP phase, where the value of NAV decreases over time until the contention period (CF) begins, or until the non-contention end of the early termination CFP sent by the AP is received ( CF-END) frame, the value of NAV will decrease to 0, at this time, STA can continue to transmit WLAN signals. In the CFP phase, the LTE system can occupy the WLAN channel for LTE communication, that is, during the LTE communication process, the LTE UE can occupy the above-mentioned WLAN frequency band in the CFP phase to send LTE signals. As shown in Figure 3, it is a schematic diagram of channel sharing between LTE and WLAN through CFP/CP alternating cycles provided by the embodiment of the present invention; in the figure, DCF is the abbreviation of distributed coordination function, and its detailed explanation is shown in the following mode three; WLAN AP The CFP is notified to the WLAN STA through the CF Parameter Set of the beacon frame. The STA avoids transmitting WLAN signals at the CFP by setting NAV. During the CFP stage, LTE signals can be transmitted. It should be noted here that the CFP is not fixed, but With variable length (Variable Length), WLAN AP can set the length of CFP according to actual needs.

Method 2. Based on the WLAN hybrid coordinator function (HCF, hybrid coordination function), part of the non-contention period (contention-free period, CFP) of the WLAN channel is used for LTE communication;

Specifically, the AP indicates the determined time to the station STA working in WLAN mode, including: the AP sends transmission opportunity TXOP information to the UE through a non-contention polling CF-Poll frame; the TXOP information includes the The above-mentioned WLAN frequency band is used to transmit LTE signals.

In the specific implementation process, based on HCF, WLAN AP can allocate transmission opportunity (Transmission Opportunity, TXOP) to LTE through contention-free poll (contention-freePoll, CF-Poll) frame, TXOP can specify the start time and The maximum time that can be occupied. During this TXOP, WLANstation working in WLAN mode can set to update its network allocation vector (NAV) to avoid transmitting WLAN signals during this period, and UE working in LTE mode can be during TXOP Occupies the unlicensed frequency band of WLAN for communication.

Method 3. Based on the WLAN distributed coordination function (distributed coordination function, DCF) channel reservation mechanism, that is, the request to send/clear to send (RTS/CTS, request to send/clear to send) information, the WLAN channel during the contention period Used for LTE communication for a while.

Specifically, the AP indicates the determined time to the station STA working in the WLAN mode, including: the AP sends a request to send frame RTS to the user equipment UE working in the LTE mode, and receives feedback from the UE Allowed to send frame CTS, so that the STA determines the time for the WLAN frequency band to transmit LTE signals according to the detected RTS and the duration duratiaon field in the CTS; wherein the duratiaon field includes the WLAN frequency band used for The time the LTE signal is transmitted.

In the specific implementation process, based on DCF, the WLAN AP sends RTS to the UE supporting the unlicensed frequency band working in LTE mode, and the UE feeds back the CTS to complete the reservation of the WLAN channel. The duration (duratiaon) in RTS and CTS The field can specify the time occupied by LTE communication, and the WLAN STA working in WLAN mode can avoid transmitting WLAN signals during this period of time by setting NAV according to the time indicated by the duratiaon field. As shown in Figure 4, it is a schematic diagram of occupying the WLAN frequency band for LTE communication in part of the CP time in the embodiment of the present invention; in the figure, the WLAN AP sends RTS to the UE working in LTE mode, and the UE feeds back the CTS, and then the UE occupies the WLAN frequency band Carry out LTE communication, after the communication is over, reply to confirm ACK, and the WLAN STA that suspends the transmission of information can unlock the block after receiving the ACK, and continue to send WLAN signals. In the figure, the distributed coordination interframe space (DCF Interframe Space, DIFS) is the longest interframe space, with the lowest priority, and is used for the delay of asynchronous frame competition access, and the short interframe space (Short Interframe Space, SIFS) , which is the shortest interframe interval and has the highest priority, and is used for operations that require an immediate response.

Based on the same inventive concept, the embodiment of the present invention also provides a signal transmission method based on the WLAN STA side, the LTE UE side and the eNB side. The specific implementation process is similar to the above description, and repeated descriptions are omitted.

As shown in FIG. 5, it is a flow chart of the signal transmission method provided by Embodiment 2 of the present invention, including:

S501: The station STA working in the WLAN mode receives the indication information sent by the access point AP, the indication information is used to indicate the time when the WLAN frequency band is used to transmit the Long Term Evolution LTE signal;

S502: The STA stops transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information that the WLAN frequency band is used for transmitting LTE signals.

Optionally, the indication information includes: a non-competition parameter set CF Parameter Set of the beacon frame;

The STA stops transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information that the WLAN frequency band is used to transmit LTE signals, including: the STA transmits LTE signals indicated by the CF Parameter Set During the non-competition period CFP, stop transmitting WLAN signals on the WLAN frequency band.

Optionally, the indication information includes: transmission opportunity TXOP information in a non-contention polling CF-Poll frame;

The STA stops transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information for transmitting LTE signals, including: the STA transmits LTE signals during the period indicated by the TXOP information Stop transmitting WLAN signals on the WLAN frequency band within the time period.

Optionally, the indication information includes: a request to send frame RTS and a permission to send frame CTS;

The STA stops transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information that the WLAN frequency band is used for transmitting LTE signals, including:

The STA stops transmitting the WLAN signal on the WLAN frequency band within the time indicated by the duration duration of the RTS and the CTS duratiaon field for transmitting the LTE signal.

As shown in FIG. 6, it is a flow chart of the signal transmission method provided by Embodiment 3 of the present invention. It should be noted that Embodiment 3 of the present invention corresponds to Mode 3 of Embodiment 1 above. For Mode 1 and Mode 2, the UE can directly Occupying the WLAN frequency band for LTE communication under the instructions of the eNB will not be repeated here. The method in Embodiment 3 of the present invention includes:

S601: The user equipment UE working in the long-term evolution LTE mode receives the request to send frame RTS sent by the access point AP;

S602: The UE feeds back a clear to send frame CTS to the AP; the RTS and the duration duration field of the CTS include the time for the WLAN frequency band to transmit LTE signals;

S603: The UE performs LTE signal transmission according to the time that the WLAN frequency band included in the duratiaon field is used for transmitting LTE signals.

As shown in FIG. 7, it is a flow chart of the signal transmission method provided by Embodiment 4 of the present invention, including:

S701: The evolved base station eNB determines a wireless local area network WLAN channel sharing configuration command; the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

S702: The eNB sends the determined WLAN channel sharing configuration command to the access point AP.

Optionally, the sharing method includes: the AP uses the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN point coordinator function; or,

The sharing method includes: the AP uses part of the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN hybrid coordinator function; or,

The sharing method includes: the AP uses a part of the contention period CP of the WLAN channel for LTE communication based on the channel reservation mechanism of the WLAN distributed coordination function;

Optionally, the LTE communication parameter configuration includes one or more of the start time of the LTE communication, the duration of the communication, and the maximum transmission power.

Here, when the LTE eNB determines that it needs to share the channel with the WLAN, it can directly notify the WLAN AP of the time to occupy the WLAN channel for LTE communication, or it can determine the time of occupying the WLAN channel for LTE communication after negotiating with the WLAN AP. The WLAN channel sharing configuration command It may include a sharing method, that is, one of the three methods in the above-mentioned embodiment 1, and LTE communication parameter configuration, and the LTE communication parameter value may include the start time of occupying the WLAN frequency band for LTE communication, the duration of communication, and the maximum transmission power. The WLAN AP determines whether to allow sharing of the WLAN channel according to its own situation. After determining that the sharing of the WLAN channel is allowed, it feeds back a WLAN channel sharing configuration response to the eNB, which may include an indication of allowing LTE and WLAN signals to share the WLAN channel and LTE communication parameter configuration for confirmation.

In order to better illustrate the flow of the method for sharing the WLAN channel between the LTE and the WLAN in the embodiment of the present invention, a specific embodiment will be used for further description below;

As shown in FIG. 8, it is a flow chart of the signal transmission method provided by Embodiment 5 of the present invention, including:

S801: UE reports terminal capability information to eNB; the terminal capability information includes: supporting WLAN mode, supporting working in LTE mode in unlicensed frequency band, or supporting working in LTE mode in LTE frequency band and working in WLAN mode in unlicensed frequency band;

S802: The eNB judges whether it is necessary to use the unlicensed frequency band to offload the service data of the UE, and if so, proceed to step S803, otherwise, proceed to step S809;

S803: The eNB determines whether the UE supports working in the LTE mode in the unlicensed frequency band, and if so, proceeds to step S804, otherwise, proceeds to step S809;

S804: The eNB determines whether the unlicensed frequency band is in an idle state, and if so, proceeds to step S808, otherwise, proceeds to step S805;

S805: The eNB determines that the WLAN channel needs to be shared with the WLAN, and sends a WLAN channel sharing configuration command to the WLAN AP; here, the WLAN channel sharing configuration command may include a sharing mode and LTE communication parameter configuration, etc.;

S806: The eNB receives the WLAN channel sharing configuration response sent by the WLAN AP; here, the WLAN channel sharing configuration response may include whether to allow sharing and confirm the sharing method, LTE communication parameter values, etc.;

S807: The eNB sends WLAN channel sharing configuration notification information to the UE; here, the WLAN channel sharing configuration notification information may include information such as center frequency point, bandwidth, and LTE communication activation time;

S808: The eNB notifies the UE to directly occupy the WLAN channel for LTE communication;

S809: The eNB notifies the UE to access the WLAN AP, and uses the WLAN mode on the unlicensed frequency band to perform LTE communication.

Based on the same inventive concept, the embodiment of the present invention also provides a signal transmission device corresponding to the signal transmission method. Since the problem-solving principle of the device is similar to the signal transmission method of the embodiment of the present invention, the implementation of the device can be found in the method The implementation of this method will not be repeated here.

As shown in FIG. 9, it is a schematic structural diagram of a signal transmission device provided by Embodiment 1 of the present invention. The device is set in an access point AP, including:

The determination module 91 is configured to determine the time when the WLAN frequency band of the wireless local area network is used to transmit long-term evolution LTE signals according to the wireless local area network WLAN channel sharing configuration command sent by the evolved base station eNB;

The indicating module 92 is configured to indicate the time determined by the determining module 91 to the station STA working in the WLAN mode, so that the STA stops transmitting WLAN signals within the determined time.

Optionally, the WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

The instruction module 92 is also configured to, after determining the time for the WLAN frequency band to be used for transmitting LTE signals, to feed back a WLAN channel sharing configuration response to the eNB, where the WLAN channel sharing configuration response includes an indication of allowing the LTE signal and the WLAN signal to share the WLAN channel and The LTE communication parameter configuration confirmed by the AP.

Optionally, the sharing method includes: the AP uses the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN point coordinator function;

The indication module 92 is specifically configured to: indicate the non-competition period CFP to the STA through the non-competition parameter set CF Parameter Set of the beacon frame; the CF Parameter Set includes the time for the WLAN frequency band to transmit LTE signals.

Optionally, the sharing method includes: the AP uses part of the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN hybrid coordinator function;

The instruction module 92 is specifically configured to: send transmission opportunity TXOP information to the UE through a non-contention polling CF-Poll frame; the TXOP information includes the time when the WLAN frequency band is used to transmit LTE signals.

Optionally, the sharing method includes: the AP uses part of the contention period CP of the WLAN channel for LTE communication based on the channel reservation mechanism of the WLAN distributed coordination function;

The instruction module 92 is specifically configured to: send a request to send frame RTS to the user equipment UE operating in LTE mode, and receive the allow to send frame CTS fed back by the UE, so that the STA can transmit the request according to the detected RTS and The duration duratiaon field in the CTS determines the time for the WLAN frequency band to transmit LTE signals; wherein, the duratiaon field includes the time for the WLAN frequency band to transmit LTE signals.

Optionally, the LTE communication parameter configuration includes one or more of the start time of the LTE communication, the duration of the communication, and the maximum transmit power.

As shown in FIG. 10, it is a schematic structural diagram of a signal transmission device provided by Embodiment 2 of the present invention. The device is set in a station STA working in a WLAN mode, and includes:

The receiving module 101 is configured to receive indication information sent by an access point AP, where the indication information is used to indicate the time when the WLAN frequency band is used to transmit long-term evolution LTE signals;

The processing module 102 is configured to stop transmitting WLAN signals on the WLAN frequency band during the time indicated by the indication information that the WLAN frequency band is used for transmitting LTE signals.

Optionally, the indication information includes: a non-competition parameter set CF Parameter Set of the beacon frame;

The processing module 102 is specifically configured to: stop transmitting WLAN signals on the WLAN frequency band within the non-competition period CFP for transmitting LTE signals indicated by the CF Parameter Set.

Optionally, the indication information includes: transmission opportunity TXOP information in a non-contention polling CF-Poll frame;

The processing module 102 is specifically configured to: stop transmitting WLAN signals in the WLAN frequency band within the time period for transmitting LTE signals indicated by the TXOP information.

Optionally, the indication information includes: a request to send frame RTS and a permission to send frame CTS;

The processing module 102 is specifically configured to: stop transmitting WLAN signals in the WLAN frequency band within the time period for transmitting LTE signals indicated by the duration duratiaon fields of the RTS and CTS.

Optionally, the processing module 102 is specifically configured to: set a network allocation vector NAV according to the time when the WLAN frequency band is used for transmitting LTE signals, so as to avoid WLAN signal transmission during the time when the WLAN frequency band is used for transmitting LTE signals .

As shown in FIG. 11 , it is a schematic structural diagram of a signal transmission device provided by Embodiment 3 of the present invention. The device is set in a user equipment UE working in a long-term evolution LTE mode, including:

The transceiver module 111 is configured to receive the request to send frame RTS sent by the access point AP, and feed back the clear to send frame CTS to the AP; the duration duration field of the RTS and the CTS includes the WLAN frequency band used to transmit the LTE signal time;

The transmission module 112 is configured to perform LTE signal transmission according to the time when the WLAN frequency band included in the duratiaon field is used for transmitting LTE signals.

As shown in FIG. 12, it is a schematic structural diagram of a signal transmission device provided in Embodiment 4 of the present invention. The device is set in an evolved base station eNB, including:

Determining module 121, for determining wireless local area network WLAN channel sharing configuration command; Described WLAN channel sharing configuration command includes: sharing mode and LTE communication parameter configuration;

The sending module 122 is configured to send the WLAN channel sharing configuration command determined by the determining module 121 to the access point AP.

Optionally, the sharing method includes: the AP uses the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN point coordinator function; or,

The sharing method includes: the AP uses part of the non-competition period CFP of the WLAN channel for LTE communication based on the WLAN hybrid coordinator function; or,

The sharing method includes: the AP uses a part of the contention period CP of the WLAN channel for LTE communication based on the channel reservation mechanism of the WLAN distributed coordination function;

Optionally, the LTE communication parameter configuration includes one or more of the start time of the LTE communication, the duration of the communication, and the maximum transmission power.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and combinations of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a Means for realizing the functions specified in one or more steps of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (28)

1. a kind of method for transmitting signals characterized by comprising

The wireless local area network (WLAN) channel configuration sharing order that access point AP is sent according to evolution base station eNB, determines wireless local area Net WLAN frequency range is used for transmission the time of long term evolution LTE signal；

The determining time is indicated to the site STA of work in wlan mode by the AP, so that the STA is in the determination Stop transmitting WLAN signal in time.

2. the method as described in claim 1, which is characterized in that the WLAN Channel Sharing configuration order includes: sharing mode With LTE communication parameter configuration；

The WLAN Channel Sharing configuration order that the AP is sent according to eNB, determines that WLAN frequency range is used for transmission the time of LTE signal Later, further includes:

The AP feeds back WLAN Channel Sharing configuration response to eNB, and the WLAN Channel Sharing configuration response includes that LTE is allowed to believe Number and WLAN signal share WLAN channel instruction and the AP confirmation LTE communication parameter configuration.

3. method according to claim 2, which is characterized in that the sharing mode includes: that the AP is coordinated based on WLAN point The non-competing phase CFP of WLAN channel is used for LTE communication by device function；

The determining time is indicated to the STA of work in wlan mode by the AP, comprising: the AP is non-competing by beacon frame It strives parameter set CF Parameter Set and non-competing phase CFP is indicated to the STA；The CF Parameter Set includes institute State the time that WLAN frequency range is used for transmission LTE signal.

4. method according to claim 2, which is characterized in that the sharing mode includes: the AP hybrid based on WLAN The non-competing phase CFP in the part of WLAN channel is used for LTE communication by coordinator function；

The determining time is indicated to the site STA of work in wlan mode by the AP, comprising: the AP passes through non-competing wheel It askes CF-Poll frame and transmission opportunity TXOP information is sent to UE；The TXOP information includes that the WLAN frequency range is used for transmission LTE The time of signal.

5. method according to claim 2, which is characterized in that the sharing mode includes: that the AP is based on WLAN distribution The partial competition phase CP of WLAN channel is used for LTE communication by the channel booking mechanism of coordination function；

The determining time is indicated to the site STA of work in wlan mode by the AP, comprising: the AP is to work in LTE User equipment (UE) under mode sends request to send frame RTS, and receives the UE feedback and allow to send frame CTS, so that described STA determines that the WLAN frequency range is used for transmission LTE letter according to the duration duratiaon field in the RTS and CTS detected Number time；Wherein, the duratiaon field includes the time that the WLAN frequency range is used for transmission LTE signal.

6. the method as described in claim 2~5 is any, which is characterized in that the LTE communication parameter configuration includes LTE communication One of initial time, the duration of communication and maximum transmission power or a variety of.

7. a kind of method for transmitting signals characterized by comprising

The site STA to work under WLAN WLAN mode receives the instruction information that access point AP is sent, the instruction letter Breath is used to indicate the time that WLAN frequency range is used for transmission long term evolution LTE signal；

The STA is used for transmission in the time of LTE signal in the WLAN frequency range of the instruction information instruction, is stopped at described Transmitting WLAN signal in WLAN frequency range；

The STA stops at transmitting WLAN signal in the WLAN frequency range, comprising:

The STA is used for transmission the time of LTE signal according to the WLAN frequency range, and network allocation vector NAV is arranged, avoids in institute It states WLAN frequency range and is used for transmission progress WLAN signal transmission in the time of LTE signal.

8. the method for claim 7, which is characterized in that the instruction information includes: the non-competing parameter set of beacon frame CF Parameter Set；

The STA is used for transmission in the time of LTE signal in the WLAN frequency range of the instruction information instruction, is stopped at described Transmitting WLAN signal in WLAN frequency range, comprising: the STA is in the CF Parameter Set transmission LTE signal indicated In non-competing phase CFP, transmitting WLAN signal in the WLAN frequency range is stopped at.

9. the method for claim 7, which is characterized in that the instruction information includes: in non-competing poll CF-Poll frame Transmission opportunity TXOP information；

The STA is used for transmission in the time of LTE signal in the WLAN frequency range of the instruction information instruction, is stopped at described Transmitting WLAN signal in WLAN frequency range, comprising: the STA stops within the time for the transmission LTE signal that the TXOP information indicates The only transmitting WLAN signal in the WLAN frequency range.

10. the method for claim 7, which is characterized in that the instruction information includes: request to send frame RTS and permission Send frame CTS；

The STA is used for transmission in the time of LTE signal in the WLAN frequency range of the instruction information instruction, is stopped at described Transmitting WLAN signal in WLAN frequency range, comprising:

The STA stops within the time for the transmission LTE signal that the duration duratiaon field of the RTS and CTS indicates The only transmitting WLAN signal in the WLAN frequency range.

11. a kind of method for transmitting signals characterized by comprising

The user equipment (UE) to work under long term evolution LTE mode receives the request to send frame RTS that access point AP is sent；

The UE feeds back Clear to Send frame CTS to the AP；The duration duratiaon field of the RTS and CTS includes WLAN frequency range is used for transmission the time of LTE signal；

The UE is used for transmission the time of LTE signal according to the WLAN frequency range that the duratiaon field includes, and carries out LTE letter Number transmission.

12. a kind of method for transmitting signals characterized by comprising

Evolution base station eNB determines wireless local area network (WLAN) channel configuration sharing order；The WLAN Channel Sharing configuration order packet It includes: sharing mode and LTE communication parameter configuration；

Determining WLAN Channel Sharing configuration order is sent to access point AP by the eNB.

13. method as claimed in claim 12, which is characterized in that the sharing mode includes: that the AP is assisted based on WLAN point Device function is adjusted, the non-competing phase CFP of WLAN channel is used for LTE communication；Or,

The sharing mode includes: that the AP is based on the hybrid coordinator function of WLAN, by the part of the WLAN channel non-competing phase CFP is used for LTE communication；Or,

The sharing mode includes: channel booking mechanism of the AP based on WLAN distributed coordination function, by WLAN channel Partial competition phase CP is used for LTE communication.

14. method as described in claim 12 or 13, which is characterized in that the LTE communication parameter configuration includes LTE communication One of initial time, the duration of communication and maximum transmission power are a variety of.

15. a kind of signal transmitting apparatus, which is characterized in that the device is set in access point AP, comprising:

Determining module, the wireless local area network (WLAN) channel configuration sharing order for being sent according to evolution base station eNB determine wireless Local area network WLAN frequency range is used for transmission the time of long term evolution LTE signal；

Indicating module, the time for determining the determining module are indicated to the site STA of work in wlan mode, so that The STA stops transmitting WLAN signal within the time of the determination.

16. device as claimed in claim 15, which is characterized in that the WLAN Channel Sharing configuration order includes: shared side Formula and LTE communication parameter configuration；

The indicating module is also used to, and determines that WLAN frequency range was used for transmission after the time of LTE signal, to eNB feedback WLAN letter The response of road configuration sharing, the WLAN Channel Sharing configuration response include that LTE signal and WLAN signal is allowed to share WLAN channel Instruction and the AP confirmation LTE communication parameter configuration.

17. device as claimed in claim 16, which is characterized in that the sharing mode includes: that the AP is assisted based on WLAN point Device function is adjusted, the non-competing phase CFP of WLAN channel is used for LTE communication；

The indicating module is specifically used for: by the non-competing parameter set CF Parameter Set of beacon frame by the non-competing phase CFP is indicated to the STA；The CF Parameter Set includes the time that the WLAN frequency range is used for transmission LTE signal.

18. device as claimed in claim 16, which is characterized in that the sharing mode includes: that the AP is mixed based on WLAN The non-competing phase CFP in the part of WLAN channel is used for LTE communication by formula coordinator function；

The indicating module is specifically used for: transmission opportunity TXOP information being sent to UE by non-competing poll CF-Poll frame；Institute Stating TXOP information includes the time that the WLAN frequency range is used for transmission LTE signal.

19. device as claimed in claim 16, which is characterized in that the sharing mode includes: that the AP is distributed based on WLAN The partial competition phase CP of WLAN channel is used for LTE communication by the channel booking mechanism of formula coordination function；

The indicating module is specifically used for: sending request to user equipment (UE) of the work under LTE mode and sends request to send frame RTS, and receive UE feedback and allow to send frame CTS, when so that the STA is according to lasting in the RTS and CTS detected Between duratiaon field determine that the WLAN frequency range is used for transmission the time of LTE signal；Wherein, the duratiaon field packet Include the time that the WLAN frequency range is used for transmission LTE signal.

20. the device as described in claim 16~19 is any, which is characterized in that the LTE communication parameter configuration includes LTE logical One of the initial time of letter, the duration of communication and maximum transmission power are a variety of.

21. a kind of signal transmitting apparatus, which is characterized in that the device is set to station of the work under WLAN WLAN mode In point STA, comprising:

Receiving module, for receiving the instruction information of access point AP transmission, the instruction information is used to indicate WLAN frequency range and is used for Transmit the time of long term evolution LTE signal；

Processing module stops for being used for transmission in the time of LTE signal in the WLAN frequency range of the instruction information instruction The transmitting WLAN signal in the WLAN frequency range；

The processing module is specifically used for: be used for transmission the time of LTE signal according to the WLAN frequency range, setting network distribute to NAV is measured, avoids carrying out WLAN signal transmission within the time that the WLAN frequency range is used for transmission LTE signal.

22. device as claimed in claim 21, which is characterized in that the instruction information includes: the non-competing parameter of beacon frame Collect CF Parameter Set；

The processing module is specifically used for: in the non-competing phase CFP of the transmission LTE signal of CF Parameter Set instruction It is interior, stop at transmitting WLAN signal in the WLAN frequency range.

23. device as claimed in claim 21, which is characterized in that the instruction information includes: non-competing poll CF-Poll frame In transmission opportunity TXOP information；

The processing module is specifically used for: within the time of the transmission LTE signal of TXOP information instruction, stopping at described Transmitting WLAN signal in WLAN frequency range.

24. device as claimed in claim 21, which is characterized in that the instruction information includes: request to send frame RTS and permission Send frame CTS；

The processing module is specifically used for: in the transmission LTE letter that the duration duratiaon field of the RTS and CTS indicates Number time in, stop at transmitting WLAN signal in the WLAN frequency range.

25. a kind of signal transmitting apparatus, which is set to work in the user equipment (UE) under long term evolution LTE mode, It is characterized in that, comprising:

Transceiver module feeds back Clear to Send frame CTS for receiving the request to send frame RTS of access point AP transmission, and to the AP； The duration duratiaon field of the RTS and CTS includes the time that WLAN frequency range is used for transmission LTE signal；

Transmission module, the WLAN frequency range for including according to the duratiaon field are used for transmission the time of LTE signal, into The transmission of row LTE signal.

26. a kind of signal transmitting apparatus, which is set in evolution base station eNB characterized by comprising

Determining module, for determining wireless local area network (WLAN) channel configuration sharing order；The WLAN Channel Sharing configuration order It include: sharing mode and LTE communication parameter configuration；

Sending module, the WLAN Channel Sharing configuration order for determining the determining module are sent to access point AP.

27. device as claimed in claim 26, which is characterized in that the sharing mode includes: that the AP is assisted based on WLAN point Device function is adjusted, the non-competing phase CFP of WLAN channel is used for LTE communication；Or,

The sharing mode includes: that the AP is based on the hybrid coordinator function of WLAN, by the part of the WLAN channel non-competing phase CFP is used for LTE communication；Or,

The sharing mode includes: channel booking mechanism of the AP based on WLAN distributed coordination function, by WLAN channel Partial competition phase CP is used for LTE communication.

28. the device as described in claim 26 or 27, which is characterized in that the LTE communication parameter configuration includes LTE communication One of initial time, the duration of communication and maximum transmission power are a variety of.