WO2014026533A1 - Indication information sending and receiving method, base station and user equipment - Google Patents

Abstract

Disclosed are indication information sending and receiving method, a base station and a user equipment (UE). The indication information sending method comprises: generating indication information; sending, in at least two subframes, downlink channels bearing the indication information to the UE, with one downlink channel sent in each subframe. The indication information receiving method comprises: receiving, in the at least two subframes, the downlink channels sent by the base station, with one downlink channel sent in each subframe; detecting the indication information borne on the downlink channels in the at least two subframes. According to the embodiments of the present invention, the downlink channels bearing the indication information are sent in the at least two subframes to the UE, so as to enhance detection performance of the indication information, and make the UE detect the indication information more easily, which thereby improves a cell coverage of the downlink channel.

Description

 Indication information transmitting method and receiving method, base station and user equipment

 This application claims priority to Chinese Patent Application No. 201210290233.0, entitled "Instruction Information Transmission Method and Receiving Method, Base Station and User Equipment", filed on August 15, 2012, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

 The embodiments of the present invention relate to communication technologies, and in particular, to an indication information sending method and a receiving method, a base station, and a user equipment.

The resource allocation in the Long Term Evolution (LTE) system is uniformly scheduled by an Evolved Node Base station (eNB). The basic unit of scheduling is a Transmission Time Interval (referred to as ΤΤΙ). , that is, a sub-frame, the time is lms„

 In the prior art, the eNB may send a downlink channel carrying the indication information to the user equipment (User Equipment for short), so that the UE can detect the indication information on the downlink channel, and obtain downlink data. For example, the physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) is used by the eNB to simultaneously transmit a PDCCH and a Physical Downlink Shared Channel (PDSCH) in one subframe. The indication information carried on the PDCCH is Downlink Control Information (DCI). The UE can only determine the DCI carried on the PDCCH according to the DCI, and then obtain the downlink data of the downlink data on the PDSCH according to the DCI.

 In the process of implementing the embodiments of the present invention, the inventors have found that the problem that the UE cannot detect the indication information carried on the downlink channel often occurs in the prior art, so that the downlink channel can cover a small cell range. Summary of the invention

An embodiment of the present invention provides a method for sending indication information, including: Generate indication information;

 A downlink channel carrying the indication information is transmitted to the user equipment UE in at least two subframes, wherein one downlink channel is transmitted in each subframe.

 Another aspect of the embodiments of the present invention provides a method for receiving indication information, including:

 Receiving a downlink channel sent by the base station in at least two subframes, wherein a downlink channel is sent in each subframe;

 The indication information carried on the downlink channel in the at least two subframes is detected.

 Another aspect of the embodiments of the present invention provides a base station, including:

 a generating module, configured to generate indication information;

 And a sending module, configured to send, in the at least two subframes, a downlink channel that carries the indication information to the user equipment UE, where one downlink channel is sent in each subframe.

 Another aspect of the embodiment of the present invention provides a user equipment, including:

 a receiving module, configured to receive, in at least two subframes, a downlink channel sent by the base station, where each downlink frame sends a downlink channel;

 And a detecting module, configured to detect indication information carried on a downlink channel in the at least two subframes.

 In the embodiment of the present invention, the downlink channel that carries the indication information is sent to the UE in the at least two subframes to enhance the detection performance of the indication information, so that the UE can more easily detect the indication information, thereby improving the cell coverage of the downlink channel. . DRAWINGS

 In order to more clearly illustrate the embodiments of the present invention or the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

 1 is a flowchart of Embodiment 1 of a method for transmitting indication information according to the present invention;

 2 is a flowchart of Embodiment 1 of a method for receiving indication information according to the present invention;

 3 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention;

4 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention; FIG. 5 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention;

 6 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention;

 FIG. 7 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

 1 is a flowchart of Embodiment 1 of a method for transmitting indication information according to the present invention. As shown in FIG. 1, the method for transmitting indication information includes:

 Step 101: Generate indication information.

 Step 102: Send, to the UE, a downlink channel carrying the indication information in at least two subframes, where a downlink channel is sent in each subframe.

 Specifically, the base station, for example, the eNB may generate indication information, and after generating the indication information, the base station may send the downlink channel carrying the indication information to the UE. In this embodiment, when transmitting the downlink channel, the base station needs to send a downlink channel to the UE in at least two subframes, and send a downlink channel in each subframe.

 For example, in the case of transmitting a DCI, when there is a DCI that needs to be transmitted, the base station can

DCI, the DCI is carried on the PDCCH or ePDCCH, and then transmitted by at least two subframes.

 The number of at least two subframes depends on the size of the cell range to be covered. If the range of cells to be covered is large, the number of subframes can be obtained. In this embodiment, based on the technical solution implemented by the foregoing base station, the UE may receive and detect the indication information carried in the downlink channel in at least two subframes, so that the detection performance of the indication information can be improved, and the UE can also It is easier to detect the indication information, thereby improving the cell coverage of the downlink channel.

In the above embodiment, in order to enable the UE to know in advance that the base station specifically uses several subframes to transmit the downlink channel. In the second embodiment of the method for transmitting information of the indication information, the method can be implemented in two ways: mode 1, the base station and the UE use the same time domain channel format by default, and the time domain channel format information is used. Used to indicate that several subframes are used to transmit the downlink channel;

 Mode 2: On the basis of mode 1, when the default time domain channel format changes, the base station may notify the UE of the time domain channel format, thereby notifying the UE of the number of subframes specifically used for transmitting the downlink channel. Specifically, the base station may send a notification message including time domain channel format information to the UE, where the time domain channel format information is used to indicate the number of the at least two subframes.

 Among them, mode 2 can be implemented more specifically with the following scheme:

 1. The physical broadcast channel (PBCH) or the enhanced physical broadcast channel (ePBCH) is sent to the UE, and the time domain channel format information is carried on the PBCH or the ePBCH.

 And transmitting, to the foregoing UE, high layer signaling including the foregoing time domain channel format information, where the high layer signaling includes Radio Resource Control (RRC) signaling, or Medium Access Control (MAC) make.

 The downlink channel in the foregoing embodiment may be specifically a PDCCH, an ePDCCH, or a PDCCH and an ePDCCH. When the time domain channel format is used, in each subframe, the DCI may be all transmitted on the PDCCH, or may be all on the ePDCCH. The transmission, or part of the subframe is transmitted on the PDCCH, and the other part of the subframe is transmitted on the ePDCCH. Taking the PDCCH as an example, Table 1 is the time domain channel format of the PDCCH.

 Referring to Table 1, the DCI is carried on the PDCCH, the format 0 means that the DCI is transmitted in only one subframe, the format 1 refers to the DCI transmission in 2 subframes, and so on, and if the ePDCCH is replaced, the time domain channel format is the same. The content of the table is preset in the base station and the UE. When the format of the channel in the current time changes, the notification sent by the base station to the UE is a time domain channel format. For example, the base station sends 0, and the UE performs the query after receiving, and confirms that it is in one subframe. Transfer DCI, and so on.

In addition, when DCI is transmitted on the ePDCCH, there are two ways to map the ePDCCH channel resources. Distributed and centralized, when the time domain channel format is used, in each subframe, the DCI resource mapping on the ePDCCH can use any one of two mapping modes;

 In this embodiment, the role of the DCI is to schedule the downlink data to be transmitted on the PDSCH. In this case, the timing relationship is that the PDSCH is sent to the UE in the last subframe of the at least two subframes. The PDSCH may be transmitted simultaneously with the DCI transmitted in the last subframe, or may be sent to the UE in the nth subframe after the at least two subframes, where n is a natural number. In the foregoing embodiment, the downlink channel is used. The indication information of the Physical Control Format Indicator Channel (PCFICH) is used to indicate that the PDCCH occupies Orthogonal Frequency Division Multiplexing (OFDM) in each subframe. The number of symbols; or the physical hybrid automatic repeat request indication channel carries the foregoing indication information for indicating whether the information sent by the UE is correctly received. Taking PCFICH as an example, Table 2 shows the time domain channel format of PCFICH.

 Table 2

 Referring to Table 2, format 0 means that the indication information is transmitted in only one subframe, format 1 means that the indication information is transmitted in two subframes, and so on, and if the PHICH is replaced, the time domain channel format is the same; The content of the table is preset in the base station and the UE. When the format of the channel in the current time changes, the notification sent by the base station to the UE is a time domain channel format. For example, the base station sends 0, and the UE performs the query after receiving, and the confirmation is within one subframe. The above indication information is transmitted.

In this embodiment, the base station and the UE use the same time domain channel format by default, or the base station sends a notification of the time domain channel format to the UE, so that the UE knows in advance how many subframes to transmit the downlink channel carrying the indication information. The base station can send the multiple indications of the same indication information in the at least two subframes, so that the UE can receive and detect the indication information in multiple subframes, thereby making it easier for the UE to detect the indication information, thereby improving the required information. Cell coverage of the downlink channel. In addition, in the third embodiment of the method for transmitting information of the indication, the frequency domain channel format can be used, and the ePDCCH is taken as an example. Table 3 shows the channel format of the ePDCCH frequency domain:

 table 3

 Referring to Table 3, here is defined a new frequency domain channel format for ePDCCH. In the new format, the ePDCCH may have more resource units, and in Table 3, the metrics of the resource unit are used to control the channel unit (Control Channel Element (CCE) and Resource Element Group (REG) are examples. Format 0 means there are 4 CCEs and 36 REGs. Format 1 means 8 CCEs and 72 REGs, and so on. A CCE contains 9 REGs, and a REG contains 4 Resource Elements (REs). One RE is a subcarrier in the frequency domain and an OFDM symbol in the time domain. In addition, here It can also be measured by an Enhanced Control Channel Element (eCCE) and an Enhanced Resource Element Group (eREG). The number of REs included in the eCCE and the eREG can be included with the CCE and the REG. The RE is different; the new frequency domain channel format can also be used to transmit DCI on the PDCCH;

 In this embodiment, the ePDCCH or the PDCCH has more resource units, so that the DCI has a lower code rate, thereby improving the detection accuracy of the DCI, and improving the performance of the ePDCCH or the PDCCH channel, that is, improving the cell coverage.

 FIG. 2 is a flowchart of Embodiment 1 of another method for receiving indication information according to the present invention. As shown in FIG. 2, the method for receiving information includes:

 Step 201: Receive, in at least two subframes, a downlink channel sent by a base station, where a downlink channel is sent in each subframe;

Step 202: Detect indication information carried on a downlink channel in the at least two subframes. Specifically, after receiving the downlink channel sent by the base station in the at least two subframes, the UE detects the indication information carried on the downlink channels. For example, in the case of detecting a DCI, when a base station, for example, an eNB, generates and transmits a PDCCH carrying the same DCI in at least two subframes, the UE may receive a PDCCH in at least two subframes, where each subframe transmits one PDCCH, and detects The DCI carried on the at least two PDCCHs.

 The number of at least two subframes depends on the size of the cell range to be covered. If the range of cells to be covered is large, the number of subframes can be obtained. In this embodiment, the base station sends the downlink channel carrying the same indication information in the at least two subframes, so that the UE can receive and detect the downlink channel of the bearer indication information in at least two subframes, thereby improving the detection performance of the indication information. The UE can more easily detect the indication information, thereby improving the cell coverage of the downlink channel.

 In the above embodiment, the time domain channel format is used, so that the UE can know in advance that the base station uses several subframes to transmit the downlink channel. In the second embodiment of the method for receiving information of the indication, the method can be implemented in two ways:

 Manner 1: The base station and the UE use the same time domain channel format by default, and the time domain channel format information is used to indicate that several subframes are used to send the downlink channel.

 Mode 2: On the basis of mode 1, when the default time domain channel format changes, the UE may receive the notification of the time domain channel format sent by the base station to the UE. Specifically, the UE may receive a notification message that is sent by the base station and includes time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 Among them, mode 2 can be implemented more specifically, using the following scheme:

 1. Receiving, by the base station, a PBCH or an ePBCH, where the time domain channel format information is carried;

 2. Receiving, by the base station, high layer signaling including the foregoing time domain channel format information, where the high layer signaling includes RRC signaling, or MAC signaling.

 The downlink channel in the foregoing embodiment may be specifically a PDCCH, an ePDCCH, or a PDCCH and an ePDCCH. When the time domain channel format is used, in each subframe, the DCI may be all transmitted on the PDCCH, or may be all on the ePDCCH. Transmission, or part of the subframe is transmitted on the PDCCH, and another part of the subframe is transmitted on the ePDCCH;

Referring to Table 1, the DCI is carried on the PDCCH, the format 0 means that the DCI is transmitted in only one subframe, the format 1 refers to the DCI transmission in 2 subframes, and so on, and if the ePDCCH is replaced, the time domain channel format is the same. The content of the table is preset in the base station and the UE, and when the channel format of the domain changes, the base station sends the message to the UE. The notification sent is a time domain channel format. For example, the base station sends 0. After receiving the UE, the UE performs a query to confirm that the DCI is transmitted in one subframe, and so on.

 In addition, when the DCI is transmitted on the ePDCCH, the ePDCCH channel resource mapping has two modes, distributed and centralized. When the time domain channel format is used, in each subframe, the DCI can use two kinds of resource mapping on the ePDCCH. Any of the mapping methods;

 In this embodiment, the role of the DCI is to allocate an uplink resource, and the timing relationship is that the PUSCH is sent to the eNB in the last subframe of the at least two subframes, or at least two subframes. In the subsequent nth subframe, the PUSCH is sent to the eNB, where n is a natural number. In the foregoing embodiment, the downlink channel may further include: a PCFICH, where the indication information carried by the PDCCH is used to indicate that the PDCCH is occupied in each subframe. The number of OFDM symbols; or the PHICH, the indication information carried by the PHICH is used to indicate whether the information sent by the UE is correctly received.

 Referring to Table 2, format 0 means that the indication information is transmitted in only one subframe, format 1 means that the indication information is transmitted in two subframes, and so on, and if the PHICH is replaced, the time domain channel format is the same; The content of the table is preset in the base station and the UE. When the format of the channel in the current time changes, the notification sent by the base station to the UE is in the time domain channel format. For example, the base station sends 0, and the UE performs the query after receiving, and the confirmation is in one subframe. The above indication information is transmitted.

 In this embodiment, the base station and the UE both use the same time domain channel format by default, or the UE receives the notification that the base station sends the time domain channel format, so as to know in advance how many subframes to transmit the downlink channel carrying the indication information, UE Receiving the downlink channels sent by the base station in at least two subframes, and detecting the indication information carried on the downlink channels, so that the UE can more easily detect the required indication information, thereby improving the cell coverage of the downlink channel.

 In addition, in the third embodiment of the indication information receiving method of the present invention, the frequency domain channel format can be used, and the frequency domain channel format is the same as the corresponding embodiment in Table 3, and the specific content and the resource unit measurement manner can be referred to. The foregoing embodiments are not described herein again.

 In this embodiment, the ePDCCH or the PDCCH has more resource units, so that the DCI has a lower code rate, thereby improving the detection accuracy of the DCI, making it easier for the UE to detect the DCI, and implementing the performance enhancement of the ePDCCH or the PDCCH channel. , that is, the cell coverage is improved.

3 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention. As shown in FIG. 3, the base station includes: a generating module 301 and a sending module 302. The generating module 301 is configured to generate indication information. 302. The method is configured to send, in the at least two subframes, a downlink channel that carries the indication information to a user equipment UE, where a downlink channel is sent in each subframe.

 The base station of this embodiment is used to implement the technical solution of the method embodiment shown in FIG. 1. The implementation principle and the technical effect are similar, and details are not described herein again.

 4 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention. As shown in FIG. 4, the base station in this embodiment further includes: a determining module 303 and a notification module 304, where the base station structure shown in FIG. a determining module 303, configured to determine time domain channel format information of the base station, where the time domain channel format information is used to indicate the number of the at least two subframes, and the notification module 304 is configured to send the foregoing indication information to the UE. Before the downlink channel, the UE sends a notification message including time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 Specifically, when the determining module 303 determines that the base station and the UE use the same time domain channel format by default, no special signaling is required. Otherwise, the notification module 304 is needed, and the notification module 304 is configured to send the PBCH or the ePBCH to the UE. The time domain channel format information is carried on the PBCH or ePBCH; or

 The notification module 304 is configured to send, to the foregoing UE, a high layer signaling that includes the foregoing time domain channel format information, where the high layer signaling includes RRC signaling, or MAC signaling;

 In the actual operation, the determining module 303 and the notification module 304 may not exist at the same time, the determining module 303 corresponds to the mode 1 in the embodiment of the method for transmitting the indication information, and the notification module 304 corresponds to the mode 2 in the embodiment of the method for transmitting the indication information. You can choose one.

 In a specific implementation, the foregoing downlink channel includes:

 The PDCCH and/or ePDCCH, the indication information is DCI.

 Correspondingly, the sending module 302 is further configured to: send, in the last one of the at least two subframes, the physical downlink shared channel PDSCH to the UE; or, in the nth subframe after the at least two subframes, Transmitting the PDSCH to the UE, where n is a natural number.

 Or, the foregoing downlink channel includes:

 The indication information is used to indicate that the PDCCH occupies the number of OFDM symbols in each subframe; or

 PHICH, the foregoing indication information is used to indicate whether the information sent by the UE is correctly received.

The base station of the embodiment is used to implement the technical solution of the method for transmitting the indication information, and the implementation thereof is implemented. The principle and technical effects are similar and will not be described here.

 In this embodiment, the base station generates indication information, and is in the at least two subframes by using the sending module.

The UE sends the downlink channel carrying the indication information, so that the detection performance of the indication information is enhanced, thereby improving the cell coverage of the downlink channel.

 FIG. 5 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention. As shown in FIG. 5, the user equipment includes: a receiving module 401 and a detecting module 402. The receiving module 401 is configured to receive, by using, a base station, in at least two subframes. a downlink channel, where each subframe transmits a downlink channel; the detecting module 402 is configured to detect indication information carried on the downlink channel in the at least two subframes;

 The user equipment in this embodiment is used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

 FIG. 6 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention. As shown in FIG. 6, the user equipment of this embodiment, based on the structure of the user equipment shown in FIG. 5, further includes: a determining module 403, configured to determine The time domain channel format information of the user equipment, where the time domain channel format information is used to indicate the number of the at least two subframes. Further, the receiving module 401 is further configured to receive the downlink sent by the base station in at least two subframes. And receiving, by the base station, a notification message that includes time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 Specifically, the receiving module 401 is configured to receive the PBCH or the ePBCH sent by the base station, where the time domain channel format information is carried on the PBCH or the ePBCH; or

 The receiving module 401 is configured to receive high layer signaling that is sent by the base station and includes the time domain channel format information, where the high layer signaling includes RRC signaling, or MAC signaling.

 In specific implementation, the foregoing downlink channel includes:

 The PDCCH and/or the ePDCCH, the foregoing indication information is a DCI. Correspondingly, the detecting module 402 is further configured to detect, on each subframe, a DCI carried on the PDCCH and/or the ePDCCH.

 Alternatively, the foregoing downlink channel may further include:

 The indication information is used to indicate that the PDCCH occupies the number of OFDM symbols in each subframe; or

 PHICH, the foregoing indication information is used to indicate whether the information sent by the UE is correctly received.

In addition, FIG. 7 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention. As shown in FIG. 7, in the user equipment of this embodiment, when the downlink channel is a PDCCH and/or an ePDCCH, the indication information is DCI, and The function of the DCI is to allocate an uplink resource, and based on the structure of the user equipment shown in FIG. 5, the method further includes: a sending module 404, configured to send, to the base station, in a last subframe of the at least two subframes PUSCH; or, in the nth subframe after the at least two subframes, send the PUSCH to the base station, where n is a natural number.

 The user equipment in this embodiment is used to implement the technical solution of the method for receiving the indication information, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

 In this embodiment, the user equipment receives the downlink channel sent by the base station in at least two subframes, and detects the indication information carried on the downlink channel in the at least two subframes, so that the detection performance of the indication information is enhanced, and the user equipment is more The indication information is easily detected, thereby improving the cell coverage of the downlink channel.

 One of ordinary skill in the art will appreciate that all or a portion of the steps to implement the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

 It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Rights request

A method for transmitting an indication information, comprising:

 Generate indication information;

 A downlink channel carrying the indication information is transmitted to the user equipment UE in at least two subframes, wherein one downlink channel is transmitted in each subframe.

 The method according to claim 1, wherein before the transmitting the downlink channel carrying the indication information to the UE, the method further includes:

 The time domain channel format information is determined, and the time domain channel format information is used to indicate the number of the at least two subframes.

 The method according to claim 1, wherein before the sending, by the UE, the downlink channel that carries the indication information, the method further includes:

 Sending, to the UE, a notification message including time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 The method according to claim 3, wherein the sending the notification message including the time domain channel format information to the UE includes:

 And transmitting, to the UE, a physical broadcast channel PBCH or an enhanced physical broadcast channel ePBCH, where the time domain channel format information is carried on the PBCH or ePBCH.

 The method according to claim 3, wherein the sending the notification message including the time domain channel format information to the UE includes:

 Transmitting high layer signaling including the time domain channel format information to the UE.

 The method according to any one of claims 1 to 5, wherein the downlink channel comprises:

 The physical downlink control channel PDCCH and/or the enhanced physical downlink control channel ePDCCH, the indication information is downlink control information DCI.

 7. The method according to claim 6, further comprising:

 Transmitting, to the UE, a physical downlink shared channel PDSCH in a last one of the at least two subframes; or

Transmitting the PDSCH to the UE in an nth subframe subsequent to the at least two subframes, where n is a natural number.

The method according to any one of claims 1 to 5, wherein the downlink channel comprises:

 The physical control format indication channel PCFICH, the indication information is used to indicate that the PDCCH occupies the number of orthogonal frequency division multiplexing OFDM symbols in each subframe; or

 The physical hybrid automatic repeat request indicates a channel PHICH, and the indication information is used to indicate whether the information sent by the UE is correctly received.

 9. A method for receiving indication information, comprising:

 Receiving a downlink channel sent by the base station in at least two subframes, wherein a downlink channel is sent in each subframe;

 The indication information carried on the downlink channel in the at least two subframes is detected.

 The method according to claim 9, wherein before the receiving, by the base station, the downlink channel sent by the base station in the at least two subframes, the method further includes:

 The time domain channel format information is determined, and the time domain channel format information is used to indicate the number of the at least two subframes.

 The method according to claim 9, wherein before the receiving, by the base station, the downlink channel sent by the base station in the at least two subframes, the method further includes:

 And receiving, by the base station, a notification message that includes time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 The method according to claim 11, wherein the receiving the notification message that includes the time domain channel format information sent by the base station includes:

 Receiving a physical broadcast channel PBCH or an enhanced physical broadcast channel ePBCH sent by the base station, where the time domain channel format information is carried on the PBCH or ePBCH.

 The method according to claim 11, wherein the receiving, by the base station, the notification message that includes the time domain channel format information includes:

 Receiving, by the base station, high layer signaling that includes the time domain channel format information.

 The method according to any one of claims 9 to 13, wherein the downlink channel comprises:

Physical downlink control channel PDCCH and/or enhanced physical downlink control channel ePDCCH, the indication information is downlink control information DCI; The detecting the indication information carried on the downlink channel in the at least two subframes includes: detecting, on each subframe, a DCI carried on the PDCCH and/or ePDCCH.

 The method according to claim 14, further comprising:

 Transmitting, to the base station, a physical uplink shared channel PUSCH in a last one of the at least two subframes; or

 And transmitting, in the nth subframe after the at least two subframes, the PUSCH to the base station, where n is a natural number.

 The method according to any one of claims 9 to 13, wherein the downlink channel comprises:

 The physical control format indication channel PCFICH, the indication information is used to indicate that the PDCCH occupies the number of orthogonal frequency division multiplexing OFDM symbols in each subframe; or

 The physical hybrid automatic repeat request indicates a channel PHICH, and the indication information is used to indicate whether the information sent by the UE is correctly received.

 17. A base station, comprising:

 a generating module, configured to generate indication information;

 And a sending module, configured to send, in the at least two subframes, a downlink channel that carries the indication information to the user equipment UE, where one downlink channel is sent in each subframe.

 The base station according to claim 17, further comprising:

 And a determining module, configured to determine time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 The base station according to claim 17, further comprising:

 a notification module, configured to send, to the UE, a notification message that includes time domain channel format information, where the time domain channel format information is used to indicate the at least two subframes, before sending the downlink channel that carries the indication information to the UE The number.

 The base station according to claim 19, wherein the notification module is specifically configured to send a physical broadcast channel PBCH or an enhanced physical broadcast channel ePBCH to the UE, where the time domain channel format information is carried in On the PBCH or ePBCH.

The base station according to claim 19, wherein the notification module is specifically configured to send, to the UE, high layer signaling including the time domain channel format information.

The base station according to any one of claims 17 to 21, wherein the downlink channel comprises:

 The physical downlink control channel PDCCH and/or the enhanced physical downlink control channel ePDCCH, the indication information is downlink control information DCI.

 The base station according to claim 22, wherein the sending module is further configured to send a physical downlink shared channel PDSCH to the UE in a last subframe of the at least two subframes; or And transmitting, in the nth subframe after the at least two subframes, the PDSCH, where n is a natural number.

 The base station according to any one of claims 17 to 21, wherein the downlink channel comprises:

 The physical control format indication channel PCFICH, the indication information is used to indicate that the PDCCH occupies the number of orthogonal frequency division multiplexing OFDM symbols in each subframe; or

 The physical hybrid automatic repeat request indicates a channel PHICH, and the indication information is used to indicate whether the information sent by the UE is correctly received.

 25. A user equipment, comprising:

 a receiving module, configured to receive, in at least two subframes, a downlink channel sent by the base station, where each downlink frame sends a downlink channel;

 And a detecting module, configured to detect indication information carried on a downlink channel in the at least two subframes.

 The user equipment according to claim 25, further comprising:

 And a determining module, configured to determine time domain channel format information, where the time domain channel format information is used to indicate the number of the at least two subframes.

 The user equipment according to claim 25, wherein the receiving module is further configured to receive the time domain channel format information sent by the base station before receiving the downlink channel sent by the base station in at least two subframes. The notification message, the time domain channel format information is used to indicate the number of the at least two subframes.

The user equipment according to claim 27, wherein the receiving module is specifically configured to receive a physical broadcast channel PBCH or an enhanced physical broadcast channel ePBCH sent by the base station, and the time domain channel format information It is carried on the PBCH or ePBCH.

The user equipment according to claim 27, wherein the receiving module is configured to receive high layer signaling that is sent by the base station and includes the time domain channel format information.

 The user equipment according to any one of claims 25 to 29, wherein the downlink channel comprises:

 Physical downlink control channel PDCCH and/or enhanced physical downlink control channel ePDCCH, the indication information is downlink control information DCI;

 The detecting module is specifically configured to detect, on each subframe, a DCI carried on the PDCCH and/or the ePDCCH.

 The user equipment according to claim 30, further comprising:

 a sending module, configured to send, to the base station, a physical uplink shared channel PUSCH in a last one of the at least two subframes; or

 And transmitting, in the nth subframe after the at least two subframes, the PUSCH to the base station, where n is a natural number.

 The user equipment according to any one of claims 25 to 29, wherein the downlink channel comprises:

 The physical control format indication channel PCFICH, the indication information is used to indicate that the PDCCH occupies the number of orthogonal frequency division multiplexing OFDM symbols in each subframe; or

 The physical hybrid automatic repeat request indicates a channel PHICH, and the indication information is used to indicate whether the information sent by the UE is correctly received.