CN108604925B

CN108604925B - Method and device for transmitting data

Info

Publication number: CN108604925B
Application number: CN201680080824.1A
Authority: CN
Inventors: 李晓翠; 徐凯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-03-03
Filing date: 2016-03-03
Publication date: 2020-06-02
Anticipated expiration: 2036-03-03
Also published as: JP2019512922A; CN108604925A; WO2017147833A1

Abstract

The embodiment of the invention provides a method and a device for transmitting data, wherein the method comprises the steps that a base station determines indication information, and the indication information indicates the DwPTS configuration of a downlink pilot time slot of a last incomplete subframe; and the base station sends the indication information to the UE through the reference subframe. In the method and the device for transmitting data of the embodiment of the invention, in an LAA-LTE system, the indication information indicates the DwPTS configuration of the last incomplete subframe, and the base station sends the indication information to the UE through the reference subframe, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration through detection, and the power consumption of the UE can be saved.

Description

Method and device for transmitting data

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting data in the field of communications.

Background

The spectrum used by a wireless communication system is divided into two categories, licensed spectrum (licensed spectrum) and unlicensed spectrum (unlicensed spectrum). For a commercial mobile communication system, an operator needs to auction authorized spectrum, and can use the corresponding spectrum to perform mobile communication operation activities after obtaining authorization. Unlicensed spectrum does not require auctioning and anyone can legally use unlicensed spectrum, e.g., wireless fidelity ("WiFi") devices in the 2.4GHz and 5GHz bands. The carriers on the licensed spectrum are referred to as licensed carriers and the carriers on the unlicensed spectrum are referred to as unlicensed carriers. With the development of communication technology, the amount of information transmitted in a wireless communication network is increasing day by day, and the unauthorized spectrum transmission information is preempted, so that the data throughput in the wireless communication network can be improved, and the requirements of users can be better met.

In a Long-term evolution Licensed-Assisted Access (LAA-LTE) system, a node of the LAA-LTE uses channel resources by Using a Listen-before-talk principle (Listen before talk, LBT), wherein LBT is a Carrier Sense Multiple Access (CSMA) technique. Since the starting time point of the node channel occupation of the LAA-LTE is random, and the starting time point of the LAA-LTE carrier signal occurrence is also random, the starting time of the LAA-LTE sub-frame occupation channel and the sub-frame boundary of the sub-frame occupation channel on the authorized carrier may not be aligned.

Therefore, if the starting time of the LAA-LTE subframe occupying channel and the subframe boundary of the subframe occupying channel on the authorized carrier may be misaligned, the base station may first transmit an incomplete subframe, the incomplete subframe lasts until the end of the corresponding subframe on the authorized carrier, and then starts to transmit the complete subframe. That is, the first subframe is incomplete, the next subframes are complete, and the remaining subframes are aligned in time with the subframes on the grant carriers, but the last subframe may also be incomplete.

In the LAA-LTE system, a configuration of a Downlink Pilot Time Slot (DwPTS) may be adopted to design a last incomplete subframe, but how to indicate a DwPTS configuration situation of the last incomplete subframe becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the invention provides a method and a device for transmitting data, which can indicate DwPTS configuration through indication information.

In a first aspect, an embodiment of the present invention provides a method for transmitting data, where the method includes:

the base station determines indication information which indicates the downlink pilot time slot DwPTS configuration of the last incomplete sub-frame of the unauthorized carrier;

and the base station sends the indication information to the user equipment UE through the reference subframe.

Therefore, in the LAA-LTE system, the base station sends the indication information to the UE through the reference subframe, and the indication information indicates the DwPTS configuration of the last incomplete subframe of the unlicensed carrier, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration through detection, and power consumption of the UE can be saved.

Optionally, the reference subframe is a last incomplete subframe of the unlicensed carrier, and the base station sends indication information to the UE through the reference subframe, where the indication information includes:

and the base station sends indication information to the UE through a physical hybrid automatic repeat indicator channel PHICH or a physical downlink control channel PDCCH in the DwPTS of the last incomplete subframe.

Therefore, in the method for transmitting data according to the embodiment of the present invention, the base station sends the indication information to the UE through the last incomplete subframe of the unlicensed carrier, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration through detection, and power consumption of the UE can be saved.

Optionally, the reference subframe is any one complete subframe of the unlicensed carrier, and the base station sends the indication information to the UE through the reference subframe, where the indication information includes:

and the base station sends indication information to the UE through the PHICH or PDCCH of any one complete subframe.

Therefore, in the method for transmitting data according to the embodiment of the present invention, the base station sends the indication information to the UE through any one complete subframe of the unlicensed carrier, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration through detection, and power consumption of the UE can be saved.

Optionally, the reference subframe is a complete subframe adjacent to a last incomplete subframe of the unlicensed carrier, and the base station sends the indication information to the UE through the reference subframe, where the indication information includes:

Optionally, the reference subframe is any subframe of the authorized carrier, and the base station sends the indication information to the UE through the reference subframe, including:

and the base station sends indication information to the UE through the PDCCH of any subframe.

Therefore, in the method for transmitting data according to the embodiment of the present invention, the base station sends the indication information to the UE through any subframe of the authorized carrier, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration through detection, and power consumption of the UE can be saved.

Optionally, the reference subframe is a last subframe of the authorized carrier, and the base station sends the indication information to the UE through the reference subframe, including:

and the base station sends indication information to the UE through the PDCCH of the last subframe.

Optionally, the DwPTS configuration includes one of 6 symbol numbers.

Optionally, the indication information is a 3-bit character, and the 3-bit character indicates the DwPTS configuration of the last incomplete subframe of the unlicensed carrier.

Optionally, the indication information is an index corresponding to the DwPTS configuration, and the index indicates the DwPTS configuration of the last incomplete subframe of the unlicensed carrier.

In a second aspect, an apparatus for transmitting data is provided, including:

a determining unit, configured to determine indication information indicating a downlink pilot timeslot DwPTS configuration of a last incomplete subframe of an unlicensed carrier.

And a sending unit, configured to send the indication information determined by the determining unit to the user equipment UE through the reference subframe.

The apparatus is configured to perform the method for transmitting data in the first aspect or any possible implementation manner of the first aspect. For example, the apparatus may be a base station.

In a third aspect, an apparatus for transmitting data is provided, the apparatus comprising: receiver, transmitter, memory, processor and bus system. Wherein the receiver, the transmitter, the memory and the processor are connected by the bus system, the memory is configured to store instructions, and the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to execute the method of the first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, there is provided a computer readable medium for storing a computer program comprising instructions for carrying out the method of the first aspect or any possible implementation manner of the first aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a communication system;

FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present invention;

FIG. 3 is another schematic diagram of an application scenario of an embodiment of the present invention;

FIG. 4 is a schematic diagram of a method of transmitting data according to an embodiment of the invention;

FIG. 5 is another schematic diagram of a method of transmitting data according to an embodiment of the invention;

FIG. 6 is another schematic diagram of a method of transmitting data according to an embodiment of the invention;

FIG. 7 is another diagram illustrating a method of transmitting data according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an apparatus for transmitting data according to an embodiment of the present invention;

fig. 9 is another schematic diagram of an apparatus for transmitting data according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a long term evolution System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS) or a Worldwide Interoperability for Microwave Access (WIMAX) communication System, etc.

For example, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an Evolved Node B (Evolved Node B) in LTE, and the present invention is not limited thereto.

Also for example, a User Equipment (UE) may be referred to as a Terminal (Terminal), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), or the like, and the UE may communicate with one or more core networks via a Radio Access Network (RAN), for example, the User Equipment may be a Mobile phone (or referred to as a "cellular" phone) or a computer with a Mobile Terminal, for example, the User Equipment may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile device, which exchanges voice and/or data with the RAN.

It should be understood that the embodiment of the present invention is only described by taking the LAA-LTE system as an example, but the present invention is not limited thereto, and the method and apparatus according to the embodiment of the present invention may also be applied to other communication systems; similarly, the embodiment of the present invention also only takes the base station and the UE in the LAA-LTE system as an example for description, but the present invention is not limited thereto, and the method and apparatus according to the embodiment of the present invention may also be applied to base stations in other communication systems.

Fig. 1 is a schematic diagram of a communication system. In fig. 1, a UE may communicate with a core network through one or more base stations. For example, the UE 10a in fig. 1 may communicate with the core network 12 via the base station 110a in the radio access network 11 a; the UE 10b may communicate with the core network 12 via a base station 110a in the radio access network 11a or via a base station 110b in the radio access network 11 b; the UE 10c may communicate with the core network 12 via a base station 110b in the radio access network 11 b. Further, it can communicate with a Public Switched Telephone Network (PSTN) 13 or other networks 14 or even the entire internet 15.

Fig. 2 is a schematic diagram of an application scenario of an embodiment of the present invention, as shown in fig. 2, a base station first transmits an incomplete subframe in an unlicensed spectrum, where the time of the incomplete subframe lasts until a corresponding subframe on the licensed spectrum ends, and then starts to transmit a complete subframe.

It should be understood that the first subframe transmitted by the base station on the unlicensed spectrum, for example, subframe N-1 on the unlicensed carrier in fig. 2, may be incomplete, and on subframe N-1 on the unlicensed carrier, the base station detects that the Channel is busy, may perform a Common Communication Adapter (CCA) procedure, then transmits a reservation signal and transmits information of a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH) or transmits information of a Physical Downlink Shared Channel (PDSCH), and the subsequently transmitted subframes may be complete. While subsequent subframes on the unlicensed spectrum and subframes on the licensed carriers are aligned in time, the last subframe, e.g., subframe N +3 on the unlicensed carrier in fig. 2, may also be incomplete.

It should be understood that, in TDD of conventional LTE, subframe 1 and subframe 6 are respectively special subframes of TDD, and the special subframe 1 and the special subframe 6 respectively include three parts, namely DwPTS, Guard Period (GP), and uplink pilot Time Slot (UpPTS), where UpPTS and GP are not used to transmit data, and only DwPTS is used to transmit data, control information, etc., so that under an extended Physical Hybrid automatic repeat indicator Channel (PHICH), PHICH is transmitted using 2 symbols in DwPTS; under a normal PHICH length, in DwPTS, PHICH is transmitted using 1 symbol.

Therefore, as shown in fig. 3, the base station may adopt the DwPTS configuration to design the last incomplete subframe, but how to indicate the DwPTS configuration of the last incomplete subframe is a problem to be solved.

Fig. 4 is a data transmission method according to an embodiment of the present invention, as shown in fig. 4, the method 100 may be performed by a base station, and the method 100 may include:

s110, the base station determines indication information indicating the DwPTS configuration of the last incomplete subframe.

Optionally, the indication information is a 3-bit character, and the 3-bit character indicates the DwPTS configuration of the last incomplete subframe.

It should be understood that the indication information may also be any bit character or other information, and the present invention is not limited thereto.

Optionally, the DwPTS is configured to one of 6 symbol numbers.

Specifically, the DwPTS configuration is expressed in terms of the number of symbols as: 3. 6, 9, 10, 11, 12 symbols, the base station may indicate the DwPTS configuration with the indication information, i.e., indicate the DwPTS configuration as one of 6 symbol numbers.

It should be understood that the base station may indicate the DwPTS configuration of the last incomplete subframe through the indication information, and after receiving the indication information, the UE may learn the DwPTS configuration thereof, and the UE does not need to obtain the DwPTS configuration sent by the base station through detection, so that power consumption of the UE may be saved.

S120, the base station sends indication information to the UE through the reference subframe.

In S120, the base station may send indication information to the UE through the reference subframe, indicating the DwPTS configuration of the last incomplete subframe, i.e., the indication information indicates the DwPTS configuration of the UE.

It should be understood that the reference subframe may be the last incomplete subframe of the unlicensed carrier, may be any one complete subframe of the unlicensed carrier, and may also be any one subframe of the licensed carrier.

Therefore, in the LAA-LTE system, the base station indicates the DwPTS configuration of the last incomplete subframe by referring to the subframe, so that the UE can determine the DwPTS configuration according to the indication information without determining the DwPTS configuration by detection, and power consumption of the UE can be saved.

It should be understood that, for the conventional LTE system, its uplink employs a synchronous hybrid automatic Repeat reQuest (HARQ) mode, and its initial transmission and retransmission have fixed time requirements. The PHICH is used to respond to HARQ correct (ACK) or HARQ error (NACK) for data transmitted through a Physical Uplink Shared Channel (PUSCH).

For example, if the UE sends PUSCH in subframe n, the UE may detect the corresponding PHICH in subframe n +4, and if NACK is received, the retransmission data may be retransmitted in subframe n + 8. For the LAA carrier, since the UE of the LAA-LTE cannot always occupy the channel, the HARQ retransmission is interrupted due to the discontinuous transmission, and the e-NodeB can only wait for the UE to re-occupy the channel and retransmit the data packet, which may be very long, resulting in data delay.

Therefore, for LAA, the PHICH is not required for the uplink to employ asynchronous HARQ operation, and thus in an embodiment of the present invention, indication information indicating the DwPTS configuration of the last incomplete subframe of the base station may be transmitted through the PHICH in the DwPTS of the last incomplete subframe.

It should be understood that for LAA, with extended PHICH length, the PHICH may be transmitted using 2 symbols in DwPTS of the last incomplete subframe; under the normal PHICH length, 1 symbol can be used in DwPTS of the last incomplete subframe to transmit PHICH, which is not limited in the present invention.

Alternatively, the base station may send the indication information to the UE through the last incomplete subframe of the unlicensed carrier.

Specifically, the base station may transmit indication information to the UE through a PHICH or a PDCCH in the DwPTS of the last incomplete subframe of the unlicensed carrier.

Specifically, as shown in fig. 5, the base station may transmit indication information to the UE through a PHICH in the DwPTS of the last incomplete subframe.

It should be understood that the specific configuration of the DwPTS in relation to the third Generation Partnership Project (3rd Generation Partnership Project, "3 Gpp" for short) standard is as follows in Table 1:

TABLE 1

It should be understood that in LAA, a downlink common Cyclic Prefix (CP) is typically used, where T is_sFor the reciprocal of the utilization rate, each subframe may have 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, and if the configuration of each subframe is different, the number of OFDM symbols occupied by DwPTS, GP, and UpPTS is different, where DwPTS may include 3 to 12 symbols.

Therefore, the base station can indicate the configuration of the DwPTS of the last incomplete subframe by adding a new bit to the PHICH in the DwPTS of the last incomplete subframe or by adding a new bit to the PDCCH in the DwPTS of the last incomplete subframe, as can be seen from table 1, the DwPTS has 6 different configurations, which are respectively expressed by the number of symbols: 3. 6, 9, 10, 11, 12 symbols.

Thus, 3 bits may be added to the PHICH or PDCCH in the DwPTS of the last incomplete subframe to indicate the configuration of the DwPTS, as shown in table 2 below:

TABLE 2

DwPTS configuration	Indexing	Specific number of symbols
			Configuration 1	000	3 OFDM symbols
Configuration 2	001	6 OFDM symbols
			Configuration 3	010	9 OFDM symbols
Configuration 4	011	10 OFDM symbols
			Configuration 5	100	11 OFDM symbols
Configuration 6	101	12 OFDM symbols

It should be understood that the indication information may configure a corresponding index (index) for the DwPTS, the index indicating the DwPTS configuration of the last incomplete subframe of the unlicensed carrier. As shown in table 2, the configuration of the DwPTS may be indicated by an index "000" for 3 OFDM symbols, the configuration of the DwPTS may be indicated by an index "001" for 6 OFDM symbols, the configuration of the DwPTS may be indicated by an index "010" for 9 OFDM symbols, the configuration of the DwPTS may be indicated by an index "011" for 10 OFDM symbols, the configuration of the DwPTS may be indicated by an index "100" for 11 OFDM symbols, and the configuration of the DwPTS may be indicated by an index "101" for 12 OFDM symbols.

Therefore, different configuration situations or different symbol numbers of the DwPTS can be indicated by the index, so that the configuration situation of the DwPTS of the last incomplete subframe of the base station can be obtained.

It should be understood that 3 bits or any several bits may be added to the PHICH or PDCCH in the DwPTS of the last incomplete subframe of the unlicensed carrier to indicate the configuration of the DwPTS, for example, 4 bits or 5 bits, or other information may be added to the PHICH or PDCCH to indicate the configuration of the DwPTS, which is not limited in this embodiment.

Alternatively, the base station may send the indication information to the UE through any one full subframe of the unlicensed carrier.

Specifically, the base station may send indication information to the UE through the PHICH or PDCCH of any one full subframe of the unlicensed carrier.

It should be understood that in LAA, the PHICH channel is not used for transmitting ACK/NACK, and thus, the configuration of DwPTS of the last incomplete subframe may be indicated using the PHICH channel in any one complete subframe before the last subframe, and in addition, the indication information may be transmitted to the UE using PDCCH in any one complete subframe before the last subframe.

Specifically, as shown in fig. 6, the base station may use the PHICH of the complete subframe immediately preceding the last incomplete subframe to indicate the configuration of the DwPTS in the last incomplete subframe, but is not limited to the subframe immediately preceding the last incomplete subframe, and any complete subframe preceding the last incomplete subframe may be used to indicate the configuration of the DwPTS in the last incomplete subframe.

It should be understood that the specific method for indicating the DwPTS configuration by the indication information is the same as the above indication method, and is not described herein again.

Alternatively, the base station may send the indication information to the UE through any one full subframe of the licensed carrier.

Specifically, the base station may send the indication information to the UE through the PDCCH of any one full subframe of the licensed carrier.

Specifically, as shown in fig. 7, when the base station employs cross-carrier scheduling, the base station may indicate the DwPTS configuration of the last incomplete subframe of the unlicensed carrier through the PDCCH of the last subframe of the licensed carrier, but is not limited to the last subframe, and any one complete subframe of the licensed carrier may be used to indicate the DwPTS configuration of the last incomplete subframe of the unlicensed carrier.

It should be understood that the base station may add a new bit to the PDCCH of the licensed carrier or multiplex an existing bit as the indication information, and the specific method for indicating the DwPTS configuration by the indication information is the same as the above indication method, and is not described herein again.

It should also be understood that the multiplexing-existing bit may be a field sending indication information in multiplexing Downlink Control Information (DCI), which is not limited in this respect.

The method of transmitting data according to an embodiment of the present invention is described in detail above with reference to fig. 1 to 7, and an apparatus of transmitting data according to an embodiment of the present invention will be described below.

Fig. 8 is an apparatus 200 for transmitting data according to an embodiment of the present invention. The apparatus 200 shown in fig. 8 comprises a determining unit 210, a transmitting unit 220,

a determining unit 210, configured to determine indication information indicating a DwPTS configuration of a last incomplete subframe of an unlicensed carrier.

A sending unit 220, configured to send the indication information determined by the determining unit 210 to the UE through the reference subframe.

It should be understood that DwPTS is configured as one of 6 different symbol numbers, specifically denoted by symbol numbers: 3. 6, 9, 10, 11, 12 symbols.

Optionally, the reference subframe is a last incomplete subframe of the unlicensed carrier, and the sending unit 220 is specifically configured to:

and sending indication information to the UE through a PHICH or a PDCCH in the DwPTS of the last incomplete subframe.

Optionally, the reference subframe is any one complete subframe of the unlicensed carrier, and the sending unit 220 is specifically configured to:

and sending indication information to the UE through the PHICH or PDCCH of any one complete subframe.

Optionally, the reference subframe is any subframe of the authorized carriers, and the sending unit 220 is specifically configured to:

and sending indication information to the UE through the PDCCH of any subframe.

Optionally, the DwPTS configuration includes one of 6 symbol numbers.

It should be understood that the apparatus 200 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic Circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic Circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 200 may be specifically a base station in the foregoing embodiment, and the apparatus 200 may be configured to perform each procedure and/or step corresponding to the base station in the foregoing method embodiment, and for avoiding repetition, details are not described here again.

Fig. 9 illustrates an apparatus 300 for transmitting data according to an embodiment of the present invention. The apparatus 300 may be a base station, the apparatus 300 may include a processor 310 and a transmitter 320,

a processor 310 configured to determine indication information indicating a DwPTS configuration of a last incomplete subframe of an unlicensed carrier by a base station.

A transmitter 320 for transmitting indication information to the UE through the reference subframe.

Optionally, the reference subframe is a last incomplete subframe of the unlicensed carrier, and the transmitter 320 is specifically configured to:

Optionally, the reference subframe is any one complete subframe of the unlicensed carrier, and the transmitter 320 is specifically configured to:

Optionally, the reference subframe is any subframe of the authorized carriers, and the transmitter 320 is specifically configured to:

and sending indication information to the UE through the PDCCH of any subframe.

Additionally, the apparatus 300 may further include a memory 330 coupled to the processor 310, a receiver 340, the memory 330 may be used to store instructions, may also be used to store frame structures, and the like, and the receiver 340 may be used to receive instructions, and the like. The processor 310 may be a baseband processor, a communications processor, a digital signal processor, or an application specific integrated circuit, etc. The processor 310 is configured to execute instructions stored by the memory 330.

It is understood that the processor 310, transmitter 320, memory 330, receiver 340, etc. in the device 300 may be connected by a bus system 350.

It should be understood that the apparatus 300 in fig. 9 may be used to execute the method in the embodiment of the present invention, and the above and other operations and/or functions of each part in the base station are respectively for implementing corresponding flows of each method in the base station in fig. 4, and are not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of transmitting data, the method comprising:

a base station determines indication information, wherein the indication information indicates the downlink pilot time slot DwPTS configuration of the last incomplete sub-frame of an unauthorized carrier;

and the base station sends the indication information to User Equipment (UE) through a physical hybrid automatic repeat request indicator channel (PHICH) in a reference subframe.

2. The method of claim 1, wherein the reference subframe is the last incomplete subframe of the unlicensed carrier, and wherein a DwPTS of the last incomplete subframe comprises the PHICH.

3. The method of claim 1, wherein the reference subframe is any one full subframe of the unlicensed carrier.

4. The method according to any of claims 1-3, wherein the DwPTS configuration comprises one of 6 symbol numbers.

5. An apparatus for transmitting data, the apparatus comprising:

a determining unit, configured to determine indication information, where the indication information indicates a downlink pilot time slot DwPTS configuration of a last incomplete subframe of an unlicensed carrier;

a sending unit, configured to send the indication information determined by the determining unit to a user equipment UE through a physical hybrid automatic repeat request indicator channel PHICH in a reference subframe.

6. The apparatus of claim 5, wherein the reference subframe is the last incomplete subframe of the unlicensed carrier, and wherein a DwPTS of the last incomplete subframe comprises the PHICH.

7. The apparatus of claim 5, wherein the reference subframe is any one full subframe of the unlicensed carrier.

8. The apparatus according to any of claims 5-7, wherein the DwPTS configuration comprises one of 6 symbol numbers.

9. The apparatus according to any of claims 5-7, wherein the apparatus is a base station.