WO2014063655A1

WO2014063655A1 - Transmission method and device for downlink control information

Info

Publication number: WO2014063655A1
Application number: PCT/CN2013/085997
Authority: WO
Inventors: 夏金环; 柯柏安; 吕永霞
Original assignee: 华为技术有限公司
Priority date: 2012-10-25
Filing date: 2013-10-25
Publication date: 2014-05-01
Also published as: CN103780334B; CN103780334A

Abstract

The present invention provides a transmission method and device for downlink control information. The method comprises: receiving downlink control information from a base station at a first predetermined time domain location in a pre-defined first sub-frame; and according to indication of the downlink control information, receiving, from the base station, downlink data borne on a physical downlink shared channel. The present invention enables a UE to obtain downlink control information without depending on PCFICH channel detection.

Description

Method and device for transmitting downlink control information

This application claims the priority of the Chinese Patent Application, filed on Oct. 25, 2012, to the Chinese Patent Office, Application No. CN 201210412994. 9. The invention is entitled "Transmission Control Method and Apparatus for Downlink Control Information", the entire contents of which are incorporated by reference. In this application. TECHNICAL FIELD The present invention relates to communications technologies, and in particular, to a method and an apparatus for transmitting downlink control information. In a Long Term Evolution (LTE) system, when a base station sends downlink data to a terminal, the scheduled time-frequency domain resource carries the downlink data, for example, transmits a physical downlink shared channel in a certain subframe (Physical Downlink). The shared channel, referred to as PDSCH, carries the downlink data on the PDSCH channel. The base station also transmits a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) in the subframe. Control information (Downlink Control Information, DCI for short), for example, includes the resource location of the downlink data on the PDSCH channel, the modulation and coding scheme used, and the like. When receiving a signal in the subframe, the terminal (User Equipment, referred to as UE, also called the user equipment) first acquires the DCI on the PDCCH, and then obtains the downlink data carried on the PDSCH channel according to the DCI. A subframe is a unit of time in communication. Usually one subframe in the time domain occupies 1ms (milliseconds), as shown in Figure 1.

In different subframes, the Orthogonal Frequency Division Multiplexing (OFDM) symbols occupied by the PDCCH may change in the time domain; for example, the PDCCH in some subframes occupies 2 OFDM symbols. The PDCCH in other subframes occupies 3 OFDM symbols. Specifically, the number of OFDM symbols occupied by the PDCCH in the subframe (that is, the position corresponding to the PDCCH in the time domain of the subframe) is determined by a physical control format indicator channel (Physical Control Format Indicator Channel, referred to as: PCFICH) indicates that the information transmitted on the PCFICH channel is a PCFICH value, which is used to indicate the number of OFDM symbols occupied by the PDCCH in the subframe. For example, if the PCFICH value is 2, it indicates that the PDCCH occupies 2 OFDM symbols in the subframe, and the UE can obtain the PDCCH according to the first OFDM symbol and the second OFDM symbol in the time domain of the subframe. The DCI of the transmission.

In conventional channel division, the first three OFDM symbols in a subframe are used for the PDCCH. However, in the extended PDCCH (extended-PDCCH, referred to as ePDCCH), the transmission resource for the PDCCH is further expanded. Exhibition. The DCI for the downlink data may be further carried by the ePDCCH, and the resource location of the ePDCCH is located on the time-frequency resource occupied by the traditional PDSCH channel. When the legacy PDCCH and the ePDCCH exist simultaneously in the downlink data transmission, the PCFICH value is used to indicate that the ePDCCH is in the ePDCCH. The starting position on the time domain. For example, if the PCFICH value is 2, it means that in the subframe, the ePDCCH starts to map from the third OFDM symbol in the time domain, and the first two OFDM symbols in the time domain still transmit the PDCCH. For the resources of the extended ePDCCH and the PDSCH channel, the frequency division multiplexing rule is adopted. Referring to FIG. 1, FIG. 1 is a channel resource mapping diagram of an embodiment of a method for transmitting downlink control information in the prior art. The PDCCH or ePDCCH usually occupies a specific time domain position in one subframe in the time domain, that is, occupies a certain period of time in the subframe. Moreover, the PDCCH or ePDCCH usually occupies a certain frequency band in the frequency domain. As shown in FIG. 1, one subframe is lms in the time domain, and the ePDCCH can occupy the 0.2th to 1.0th milliseconds therein.

As described above, when receiving the downlink data of a certain subframe, the UE needs to first detect the PCFICH channel of the subframe, and obtain the location of the PDCCH or the ePDCCH on the subframe by using the PCFICH value (ie, the learned time is occupied in the time domain). Which OFDM symbol), according to which the DCI carried on the PDCCH or ePDCCH is received from the corresponding OFDM symbol. In the prior art, the UE obtains the PCFICH value by detecting the PCFICH channel mapped on the full frequency band; however, with the development of the LTE technology, in the evolved version after Release 11, a low-capability UE may be supported. The UE only supports the processing capability of the narrowband data, that is, it can only receive data in a part of the frequency domain, which may result in the UE not being able to obtain the information of the PCFICH channel (for example, the frequency domain in which the PCFICH channel resource is located does not belong to the capability range of the UE), and further The location of the PDCCH or ePDCCH in the subframe cannot be known, which further affects the acquisition of DCI and the reception of downlink data. SUMMARY OF THE INVENTION The embodiments of the present invention provide a method and an apparatus for transmitting downlink control information, so that the UE acquires downlink control information without relying on PCFICH channel detection.

A first aspect of the present invention provides a method for transmitting downlink control information, including:

Receiving downlink control information from the base station at a first predetermined time domain location in the predefined first subframe;

And receiving, according to the indication of the downlink control information, downlink data carried on the physical downlink shared channel from the base station. In a possible implementation manner, the first subframe is a subframe located in a predetermined time domain position in one frame, or is included in a set of multiple subframes located in a predetermined time domain position in one frame.

In another possible implementation manner, receiving downlink control information from the base station in the first predetermined time domain position in the predefined first subframe includes: based on a predefined first physical control format, in a predefined The first in a sub-frame A predetermined time domain location receives downlink control information from the base station, the first physical control format being used to indicate the first predetermined time domain location.

In another possible implementation, before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, the method further includes: according to the predefined second physical control format, a second predetermined time domain location in the predefined second subframe receives a system information block, the system information block is used to indicate a predefined first subframe, and the second physical control format is used to indicate the second Schedule time domain location.

In another possible implementation manner, the system information block further carries indication information of the first predetermined time domain location.

In another possible implementation manner, before the receiving, by the base station, the downlink control information in the first predetermined time domain position in the predefined first subframe, the method further includes: according to the predefined second physical control format Receiving a system information block in a second predetermined time domain position in a predefined second subframe, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the second predetermined a time domain location; receiving another system information block from a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe.

In another possible implementation manner, the system information block further carries indication information of the third predetermined time domain location; and/or, the another system information block further carries the first reservation The indication of the time domain location.

In a further implementation manner, the predefined first subframe is represented by the following information: a subframe identifier of the first subframe, or a rule and a parameter for acquiring a subframe identifier of the first subframe .

In another possible implementation manner, the second subframe is a fifth subframe in a frame, and the one subframe includes ten subframes from the zeroth to the ninth.

In another possible implementation manner, the first subframe includes: a paging subframe used to send a paging message. Another aspect of the present invention provides a method for transmitting downlink control information, including:

And transmitting downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate to the terminal, the communication resource used by the physical downlink shared channel;

And transmitting, by using the communication resource, downlink data to the terminal on the physical downlink shared channel.

In a possible implementation manner, the first subframe is a subframe located in a predetermined time domain position in one frame, or is included in a set of multiple subframes located in a predetermined time domain position in one frame.

In another possible implementation manner, the sending, by the first predetermined time domain location in the predefined first subframe, the downlink control information to the terminal includes: based on the predefined first physical control format, in the predefined first The first predetermined time domain location in the subframe sends downlink control information to the terminal, where the first physical control format is used to indicate the first predetermined time domain location. In another possible implementation, before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, the method further includes: according to the predefined second physical control format, And transmitting, by the second predetermined time domain position in the predefined second subframe, a system information block, where the system information block is used to indicate the predefined first subframe to the terminal, where the second physical control format is used to indicate The second predetermined time domain location.

In another possible implementation, before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, the method further includes: according to the predefined second physical control format, a second predetermined time domain location in the predefined second subframe, the system information block is used to indicate a third subframe to the terminal, and the second physical control format is used to indicate the second predetermined a time domain location; transmitting another system information block in a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe to a terminal.

In another possible implementation, the predefined first subframe is represented by the following information: a subframe identifier of the first subframe, or a rule and a parameter for acquiring a subframe identifier of the first subframe. .

In another possible implementation manner, the first subframe includes: a paging subframe used to send a paging message. Yet another aspect of the present invention provides a terminal, including:

An information receiving unit, configured to receive downlink control information from a base station in a first predetermined time domain position in a predefined first subframe;

And a data acquiring unit, configured to receive downlink data carried on the physical downlink shared channel from the base station according to the indication of the downlink control information.

In a possible implementation manner, the information receiving unit is specifically configured to: receive, according to a predefined first physical control format, downlink control information from a base station in a first predetermined time domain position in a predefined first subframe, where The first physical control format is used to indicate the first predetermined time domain location.

In another possible implementation manner, the information receiving unit is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control a format, the system information block is received in a second predetermined time domain position in a predefined second subframe, the system information block is used to indicate the predefined first subframe, and the second physical control format is used The second predetermined time domain location is indicated. In another possible implementation manner, the information receiving unit is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control Format, receiving a system information block in a second predetermined time domain position in a predefined second subframe, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the second a predetermined time domain location; receiving another system information block from a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe.

Yet another aspect of the present invention provides a base station, including:

And an information carrying unit, configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate, to the terminal, a communication resource used by the physical downlink shared channel;

And a data sending unit, configured to send downlink data to the terminal by using the communication resource on the physical downlink shared channel. In a possible implementation, the information carrying unit is specifically configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format. The first physical control format is used to indicate the first predetermined time domain location.

In another possible implementation manner, the information carrying unit is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain location in the predefined first subframe, according to the predefined second physical control Formatting, transmitting a system information block in a second predetermined time domain position in a predefined second subframe, the system information block being used to indicate the predefined first subframe to the terminal, the second physical control format Used to indicate the second predetermined time domain location.

In another possible implementation, the information carrying unit is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control a format, the system information block is sent in a second predetermined time domain position in the predefined second subframe, the system information block is used to indicate a third subframe to the terminal, and the second physical control format is used to indicate the The second predetermined time domain location transmits another system information block at a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe to the terminal.

In another possible implementation manner, the system information block further carries the third predetermined time domain location information; and/or, the another system information block further carries the first predetermined time domain. location information.

In another possible implementation manner, the second subframe is a fifth subframe in a frame, and the one subframe includes ten subframes from the zeroth to the ninth. In another possible implementation manner, the first subframe includes: a paging subframe used to send a paging message. Yet another aspect of the present invention provides a terminal, including:

a wireless transceiver, configured to receive downlink control information from a base station at a first predetermined time domain location in a predefined first subframe;

The processor is configured to receive downlink data carried on the physical downlink shared channel from the base station according to the indication of the downlink control information.

In a possible implementation manner, the wireless transceiver is specifically configured to receive downlink control information from a base station in a first predetermined time domain position in a predefined first subframe according to a predefined first physical control format. The first physical control format is used to indicate the first predetermined time domain location.

In another possible implementation manner, the wireless transceiver is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical a control format, the system information block is received in a second predetermined time domain position in the predefined second subframe, the system information block is used to indicate the predefined first subframe, and the second physical control format is used The second predetermined time domain location is indicated.

In another possible implementation manner, the wireless transceiver is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical a control format, the system information block is received in a second predetermined time domain position in the predefined second subframe, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the Two predetermined time domain locations; another system information block is received from a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe.

Yet another aspect of the present invention provides a base station, including:

a wireless transceiver, configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate, to the terminal, a communication resource used by the physical downlink shared channel;

The processor is configured to use the communication resource to send downlink data to the terminal on the physical downlink shared channel.

In a possible implementation, the wireless transceiver is specifically configured to send downlink control information to the terminal in a first predetermined time domain position in a predefined first subframe according to a predefined first physical control format. The first physical control format is used to indicate the first predetermined time domain location.

In another possible implementation, the wireless transceiver is further configured to: before the downlink control information is sent to the terminal in the first predetermined time domain location in the predefined first subframe, according to the predefined second physical Controlling a format, the system information block is sent in a second predetermined time domain position in the predefined second subframe, the system information block is used to indicate the predefined first subframe to the terminal, and the second physical control The format is for indicating the second predetermined time domain location.

Yet another possible implementation manner is further used for ending at a first predetermined time domain position in a predefined first subframe Before transmitting, by the terminal, the system information block is sent in a second predetermined time domain position in the predefined second subframe according to the predefined second physical control format, where the system information block is used to indicate the third to the terminal. a subframe, the second physical control format is used to indicate the second predetermined time domain location; another system information block is sent in a third predetermined time domain location in the third subframe, the another system information The block is configured to indicate the predefined first subframe to the terminal.

The technical effect of the method and apparatus for downlink control information provided by the embodiment of the present invention is: the UE may omit the process of detecting the PCFICH channel by receiving downlink control information from the base station in the first predetermined time domain position in the predefined first subframe. The UE can obtain downlink control information without relying on PCFICH channel detection, thereby implementing receiving service data. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a channel resource map of an embodiment of a method for transmitting downlink control information in the prior art;

2 is a schematic flowchart of an embodiment of a method for transmitting downlink control information according to the present invention;

3 is a schematic flowchart of another embodiment of a method for transmitting downlink control information according to the present invention;

4 is a schematic structural diagram of a frame in another embodiment of a method for transmitting downlink control information according to the present invention;

FIG. 5 is a schematic flowchart diagram of still another embodiment of a method for transmitting downlink control information according to the present invention; FIG.

6 is a schematic flowchart of still another embodiment of a method for transmitting downlink control information according to the present invention;

7 is a schematic structural diagram of an embodiment of a terminal according to the present invention;

8 is a schematic structural diagram of an embodiment of a base station according to the present invention;

9 is a structural diagram of an entity of a terminal embodiment of the present invention;

FIG. 10 is a structural diagram of an entity of an embodiment of a base station according to the present invention. Embodiment 1 FIG. 2 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention. The method in this embodiment is performed by a terminal. As shown in FIG. 2, the method may include: The downlink control information is received from the base station in a first predetermined time domain position in the predefined first subframe, where the downlink control information is a PDCCH or an ePDCCH carried in the first subframe. The PDCCH or ePDCCH occupies a predetermined time domain position of one subframe in the time domain, and occupies a certain frequency band in the frequency domain, and is used to transmit the downlink control information. The predetermined time domain position in the one subframe indicates a preset time period in the subframe in this embodiment and subsequent embodiments, which occupies a specific time period in the subframe.

In one example, the first subframe is lms, and the first predetermined time domain location may be the first 0.2 ms in the first subframe, ie, 0 ms to 0.2 ms. The first predetermined time domain location may be a time period from the 0.2 ms to the 0.5 ms in the first subframe, and the value may be flexibly changed, which is not limited in this embodiment. The length of time and the starting position occupied by the predetermined time domain position in the first subframe may be preset, for example, in accordance with a prescribed value in an infinite communication standard protocol. And, in the first subframe, not only downlink control information but also downlink data sent by the base station to the terminal, where the downlink data is carried on the PDSCH channel of the first subframe.

The downlink control information is mainly used to indicate a resource location of the downlink data on the PDSCH channel, a modulation and coding scheme used, and the like. The terminal needs to obtain the downlink control information to obtain the downlink data sent by the base station in the first subframe according to the downlink control information.

The terminal needs to obtain the downlink control information, and first needs to know the PDCCH carrying the downlink control information, or the time domain location of the ePDCCH in the first subframe; for example, the PDCCH is on the first two OFDM symbols of the first subframe, Alternatively, the ePDCCH starts mapping at the third OFDM symbol of the first subframe. The terminal knows the location of the channel, and can receive the downlink control information carried by the channel in the time domain position of the corresponding first subframe.

In this embodiment, the terminal receives downlink control information from the base station in a first predetermined time domain position in the predefined first subframe. The predefined first subframe, for example, the 0th subframe and the 4th subframe in a certain frame; the first predetermined time domain location, for example, the first two of the foregoing subframes OFDM symbols.

The predefined first subframe and the first predetermined time domain location may be determined according to a predefined first physical control format; the predefined first physical control format may be agreed by a wireless communication protocol. The device in the wireless communication network acquires the first physical control format according to the setting of this protocol. The first physical control format is for indicating a first predetermined time domain location. For example, both the base station and the terminal obtain the first predetermined time domain location in the first physical control format by reading the wireless communication protocol driver software in the memory, so that the device in the network is not required to transmit any signaling to utilize the first The transmission and reception of downlink control information is performed at a predetermined time domain location.

Of course, the device may not follow a preset format, and the predefined first subframe and the first predetermined time domain location may also be obtained by receiving a system information block.

Compared with the prior art, in the prior art, when receiving the first subframe, the terminal needs to receive the first The PCFICH channel in the subframe acquires the PCFICH information carried on the PCFICH channel, and then receives the downlink control information according to the indication of the PCFICH information, which may cause the problem mentioned earlier, that is, the frequency domain where the PCFICH channel resource is located The low-capability terminal cannot receive the PCFICH channel, and the low-capacity terminal, when the terminal receives the predefined first subframe, The first predetermined time domain location of the downlink control information is received in the first subframe, so that it is no longer necessary to detect the PCFICH channel, and it is known which time domain location in the subframe receives the downlink control information, directly according to the first The predetermined time domain location can receive the downlink control information from the corresponding OFDM symbol, and the reliance on the PCFICH channel detection when the downlink control information is received is removed, and the terminal knows the downlink control information on the basis of not relying on the PCFICH channel detection. The time domain mapping information ensures the correct reception of downlink data.

102. Receive, according to the indication of the downlink control information, downlink data carried on a physical downlink shared channel from a base station. Optionally, the method in this embodiment is also applicable to a common UE, that is, a non-low-capacity UE capable of performing full-band detection. In addition, although the PCFICH information may be known in advance for detecting the PCFICH channel, the base station may continue to transmit the PCFICH channel in the first subframe when transmitting the first subframe. And the PCFICH channel carries the PCFICH information in the PCFICH channel, mainly to prevent the first UE from being received by the normal UE, and the normal UE can still perform the PCFICH channel detection according to the prior art manner; , there is no need to detect the PCFICH channel in it.

Embodiment 2 FIG. 3 is a schematic flowchart of another embodiment of a method for transmitting downlink control information according to the present invention. The method in this embodiment is performed by a base station. As shown in FIG. 3, the method may include:

The downlink control information is sent to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate to the terminal, the communication resource used by the physical downlink shared channel. The defined first subframe or the first predetermined time domain location may be, for example, information that is defined by the standard and known by both the base station and the terminal. At this time, it may be referred to as being determined by a predefined first physical control format, and the terminal may Receiving downlink control information according to the first predetermined time domain position in a corresponding time domain position in the predefined first subframe, and correspondingly, the base station is also in the predefined first according to the first predetermined time domain location when transmitting The corresponding time domain location in the subframe carries downlink control information;

Alternatively, the predefined first subframe or the first predetermined time domain location may also be preset by the base station, so the base station carries the downlink control information in a predefined manner according to the first predetermined time domain location set by the base station. First child a time domain location corresponding to the frame, and sending the predefined first subframe or the first predetermined time domain location to the terminal, for example, to the terminal by using a system information block, where the terminal is further configured according to the information in the predefined first subframe. The corresponding time domain location in the middle receives downlink control information.

202. The downlink data is sent to the terminal by using the communication resource on the physical downlink shared channel. In the following embodiments, several alternative modes of transmission of downlink control information will be specifically described.

Embodiment 3 In the method for transmitting downlink control information provided by the embodiment, the predefined first subframe is a subframe located in a predetermined time domain position in one frame, or is included in a frame at a predetermined time. Within the collection of multiple subframes of the domain location.

For example, the predefined first subframe and the first predetermined time domain location may be determined according to a predefined first physical control format, where the predefined first physical control format refers to a standard that may be specified in the standard. In the standard, it is specified in the standard that a certain subframe is predefined in each frame, or a certain subframe set is predefined, and any subframe in the certain subframe or subframe set is sent to a low capability. For the UE, the above subframe is referred to as a first subframe. And, in the first subframe, the time domain location where the PDCCH carrying the downlink control information or the ePDCCH is located is set based on the first predetermined time domain location. The first predetermined time domain location may be represented by the indication information, where the indication information is equivalent to the PCFICH value. For example, the predetermined PCFICH value may be 1 in the standard. In this embodiment, the terminal does not need to detect the PCFICH channel. It is known that the PCFICH value is 1, that is, the terminal knows in advance that the first predetermined time domain location carrying the downlink control information is the first OFDM symbol.

For example, refer to FIG. 4. FIG. 4 is a schematic diagram of a frame structure in another embodiment of a method for transmitting downlink control information according to the present invention. For the Frequency Division Duplexing (FDD) system, it can be predefined in each frame, the 0th subframe, the 4th subframe, the 5th subframe, and the 9th subframe, fixed And transmitting the downlink control information in the first predetermined time domain position in the subframe, where the first predetermined time domain location is, for example, the first two OFDM symbols in the subframe, so that, on the terminal side, when the terminal receives the subframe, The downlink control information may be directly received at the corresponding time domain location according to the first predetermined time domain location, and the PCFICH channel in the subframe is no longer needed to be detected. For the Time Division Duplex (TDD) system, it can be predefined that in each frame, the 0th subframe, the 1st subframe, the 5th subframe, and the 6th subframe are fixed in the sub-frame. The first predetermined time domain location in the frame carries downlink control information. The other subframes in Figure 4 are normal subframes, which are sent to the normal UE. The normal UE still needs to detect the PCFICH channel.

The above-mentioned first subframe in each frame is set in a standard predetermined manner, and the scheme is simple to implement; the method for transmitting downlink control information described in Embodiment 4 and Embodiment 5 below is different from Embodiment 3 in that First subframe Not fixed, can be adjusted, that is, which subframes are the first subframe in each frame, which can be dynamically adjusted to increase the flexibility of subframe transmission; and, further optionally, the first predetermined time domain The position can also be adjusted.

The method for transmitting the downlink control information provided by the embodiment is to use a system information block (SIB) to indicate the predefined first subframe, for example, the base station sends the message to the terminal. In a certain subframe, the indication information used to indicate the predefined first subframe is carried in the SIB in the subframe; the terminal can obtain the first information by acquiring the indication information of the first subframe in the SIB. a subframe, and being capable of receiving downlink control information on the first subframe according to the first predetermined time domain position when the first subframe is received.

FIG. 5 is a schematic flowchart of still another embodiment of a method for transmitting downlink control information according to the present invention. In this embodiment, a second predetermined time domain location bearer in a predefined second subframe according to a predefined second physical control format is used. SIB, and the SIB is used to indicate the predefined first subframe; wherein the second physical control format is used to indicate the second predetermined time domain location. The concept of a predetermined time domain position in a subframe can be referred to the description of the previous embodiment. Optionally, the second subframe in this embodiment is, for example, a fifth subframe in one frame, where the one subframe includes ten subframes from the zeroth to the ninth, and the fifth subframe The SIB in the middle is called SIB1, as shown in Figure 5, including:

401. The terminal receives the fifth subframe that is sent by the base station, where the system information block SIB is used to carry some network access information sent by the base station to the terminal, so that the terminal accesses the network according to the network; SIBs, such as SIB1, SIB2, SIB3, ..., SIB1 is the first SIB transmitted, and the bearer position of SIB1 is fixed, which is the fifth subframe in each frame transmitted through the base station (ie The sixth subframe in the time domain of each frame is transmitted. The SIB1 may be referred to as a first system information block. In addition, SIB1 also carries scheduling information of other SIBs, such as a scheduling period, so that when the terminal receives the SIB1, it can also know when other SIBs receive according to the scheduling information.

In this embodiment, the predefined first subframe will be indicated by SIB1.

402. The terminal acquires the SIB1 from the fifth subframe according to the second predetermined time domain location, and learns the predefined first subframe by using the SIB1. The terminal acquires the fifth subframe. The information carried by the SIB1 in the fifth subframe is scheduled by using downlink control information (for example, information of the PDCCH) in the fifth subframe. Specifically, for example, SIB1 is broadcast information transmitted on a PDSCH channel, and downlink control information of a PDCCH in a fifth subframe is used to indicate a resource location of the SISCH1 on the PDSCH channel, and the terminal still needs to receive downlink control information of the PDCCH first. The information about the resource location of the SISCH1 on the PDSCH channel is obtained by using the downlink control information, and the information carried by the SIB1 is acquired on the corresponding PDSCH channel. In this embodiment, it may be predetermined in the standard that the fifth subframe carries the SIB1 in the second predetermined time domain location, for example, the second predetermined time domain location is the first two OFDM symbols. In this way, when the low-capability UE receives the fifth subframe, it does not need to detect the PCFICH channel, but directly learns the time domain location where the PDCCH is located according to the second predetermined time domain location (in the case of enhancing the PDCCH, it may be The location where the ePDCCH starts to be mapped) directly receives downlink control information of the PDCCH; and obtains SIB1 on the PDSCH channel according to the downlink control information.

The second predetermined time domain location may be the same as or different from the first predetermined time domain location. If the two are different, the indication information of the first predetermined time domain location may be further carried in the SIB1, for example, the indication information is 2, indicating that the PCFICH value is 2, so that the first predetermined time domain location is obtained. Two OFDM symbols.

The SIB1 may represent a predefined first subframe by using the following information, including: a subframe identifier of the first subframe, or a rule and a parameter for acquiring a subframe identifier of the first subframe.

For example, the bearer in the SIB1 may be (the subframe No. 0, the subframe No. 4, and the subframe No. 5), that is, the subframe identifier of the first subframe that is predefined by the base station side is directly carried, so that the terminal accordingly It can be directly known that the first subframe is the 0th subframe, the 4th subframe... Certainly, the foregoing predefined first subframe may be a certain subframe or a subframe set, and any subframe in the subframe set is the first subframe.

For example, the rules and parameters of the subframe identifier of the first subframe may be acquired in the SIB1; for example, the rule may be: but not limited to: #n mod m=0; wherein, #n is The subframe number is specifically a subframe identifier of the first subframe, where m is a parameter carried in the SIB1, and the parameter is used to assist obtaining the subframe identifier of the first subframe. For example: Assume that m=5, according to the above rule #n mod 5=0, the obtained subframe identifier of the first subframe should include: #0, #5, ie (#0, #5) is predefined A subframe set, any subframe in the set is the first subframe.

After the terminal obtains the foregoing indication information for indicating the predefined first subframe, it may be known which subframes are the first subframe in the subsequently received frame; and, in the first subframe, Instead of detecting the PCFICH channel, the terminal may receive downlink control information directly at the first predetermined time domain location on the first subframes.

In this embodiment, the predefined first subframe is indicated by the SIB1, or the indication information of the first predetermined time domain location is carried in the SIB1. The advantage of the processing is that the base station can adjust the predefined first when needed. The sub-frame, or the first predetermined time domain position, is only required to carry the adjusted information in the SIB1, and the transmission of the sub-frame is more flexible than the manner of the fixed sub-frame in the third embodiment.

403. The terminal receives the predefined first subframe, where the first subframe received by the terminal is a subframe indicated by SIB1 in 402. For example, if the indication information indicating that the first subframe is the first subframe identifier is #0, #5, the terminal receives the frame where the SIB1 is located. In the next frame, the subframe corresponding to #0 and #5 is the predefined first subframe.

404. The terminal receives downlink data carried on the physical downlink shared channel from the base station according to the indication of the downlink control information. The first subframe carries the downlink control information, and the first subframe further carries downlink data that is sent by the base station to the terminal, where the downlink control information is used to indicate that the downlink data is in the first subframe. Resource location, code modulation scheme, etc. of the PDSCH channel. Although the previous subframe No. 5 also has downlink control information, it is used to indicate the resource location of SIB1 on the PDSCH channel.

The fifth embodiment is an extension of the fourth embodiment. It is considered that there may not be too many vacant bit bits in the SIB1 to indicate the indication information of the predefined first subframe, and may also pass other than SIB1. The SIB indicates the predefined first subframe, and the other SIBs are, for example, SIB2, SIB3, etc., and may be newly defined SIBs; SIB1 shall carry scheduling information of the other SIBs, and the terminal may learn according to the scheduling information. The subframe in which the other SIBs are located, and then the predefined first subframe indicated by other SIBs.

FIG. 6 is a schematic flowchart of another embodiment of a method for transmitting downlink control information according to the present invention. In this embodiment, the predefined first subframe is indicated by other SIBs other than SIB1. As shown in FIG. 6, the method includes:

501. The terminal receives the fifth subframe that is sent by the base station, where the fifth subframe may be referred to as a predefined second subframe.

502. The terminal receives the SIB1 from the second predetermined time domain position in the fifth subframe according to the predefined second physical control format, and learns the third subframe by using the SIB1; where, the terminal may be scheduled in the standard, the fifth number The subframe carries the downlink control information in the second predetermined time domain position, so that when the low capability UE receives the fifth subframe, it does not need to detect the PCFICH channel, but directly according to the second predetermined time domain location, in the corresponding The OFDM symbol receives downlink control information of the PDCCH; and obtains SIB1 on the PDSCH channel according to the downlink control information.

The SIB1 of this embodiment is used to indicate a third subframe, which is a subframe for carrying other SIBs. Specifically, another SIB is received from a third predetermined time domain position in the third subframe, for example, SIB3, where the SIB3 is used to indicate the predefined first subframe. The SIB1 carries the scheduling information of the SIB3 and the subframe identifier of the third subframe; the SIB3 scheduling information carried in the SIB1 is different from the scheduling information of other SIBs; because SIB3 needs to have a fixed scheduling period, and The fixed transmission subframe number is also fixed on the basis of the fixed scheduling period, for example, fixed by the second subframe. Therefore, the scheduling information of the SIB3 includes: a scheduling period of the SIB3, and a third subframe of the fixed bearer SIB3. Subframe identifier (for example, subframe number 2 above). Through the scheduling information of the SIB3 described above, the terminal can determine which subframe the third subframe carrying the SIB3 is.

503. The terminal receives the third subframe.

504. The terminal receives another system information block from a third predetermined time domain location in the third subframe, where another system information block is used to indicate the predefined first subframe. In this embodiment, The third subframe that carries the other SIBs, for example, the SIB3, also carries other SIBs, such as SIB3, in the third predetermined time domain location; when receiving the third subframe, the terminal may directly receive the third predetermined time domain location. SIB3. For example, the downlink control information is obtained from the OFDM symbol corresponding to the third predetermined time domain location where the PDCCH is located, and the resource position of the PDSCH channel of the SIB3 in the third subframe is obtained according to the downlink control information, and the SIB3 is received.

It should be noted that, the third predetermined time domain location may be the same as or different from the second predetermined time domain location in the predefined second physical control format; when the two are different, the SIB1 also carries There is indication information of the third predetermined time domain location. Similarly, if the first predetermined time domain location is also variable, the SIB3 also carries indication information of the first predetermined time domain location. The SIB1 carries the indication information of the third predetermined time domain location and the indication information of the first predetermined time domain location in the SIB3, which may exist simultaneously, that is, corresponding to the third predetermined time domain location and the first predetermined time. The location of the domain is variable, or only one of them can exist, that is, the other is fixed. For example, if the indication of the third predetermined time domain location is also carried in SIB1, A predetermined time domain location and a second predetermined time domain location may be the same, both being fixed locations preset in the standard.

The SIB3 may represent a predefined first subframe by using the following information, including: a subframe identifier of the first subframe, or a rule and a parameter for acquiring a subframe identifier of the first subframe. For details of the rules and parameters of the foregoing subframe identifier, refer to Embodiment 4.

505. The terminal receives the predefined first subframe.

506. The terminal receives downlink control information from the base station in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format. The predefined first subframe carries the downlink control information in the first predetermined time domain location, and the terminal does not need to detect the PCFICH channel.

In the above method embodiment, the first subframe is a fixed subframe specified by a standard, or an adjustable subframe indicated by a certain SIB, regardless of the manner in which the subframe is set, The selection of a subframe, that is, which subframe in each frame is selected to carry downlink control information in the first predetermined time domain position, may be performed according to the following rule: the first subframe includes: used to send a paging message Paging sub-frame. Because, sending paging The paging subframe, if the terminal needs to correctly receive the paging sent by the base station, it needs to be obtained according to the downlink control information transmitted by the PDCCH or the ePDCCH. Therefore, for the low-capability UE, the paging subframe for sending the paging also needs to be adopted. The preset PCFICH information is such that the low-capability UE does not need to detect the PCFICH channel, and ensures correct reception of the paging by the UE.

Specifically, the first subframe to be implemented includes a paging subframe, which may be processed in the following two manners: One way is: not changing the mechanism for sending paging;

For example, for an FDD system, the subframe number of the subframe used for sending the paging may be: 0, 4, 5, 9, that is, all four subframes may be sent for paging, and for a specific UE, in the four subframes. Sending a paging on one of the subframes. Then, if the UE is to correctly receive the paging and does not change the mechanism for sending the paging, the subframe set, that is, the subframe set including the four subframes whose subframe numbers are 0, 4, 5, and 9 are predefined as the first child. The subframe set of the frame, that is, any one of the subframes is a predefined first subframe, carries downlink control information in the first predetermined time domain position. The 0, 4, 5, and 9 may be referred to as predetermined time domain locations, and the set of subframes is referred to as a set of a plurality of subframes located in a predetermined time domain position in one frame.

Similarly, for the TDD system, the subframe number of the subframe used for sending the paging may be: 0, 1, 5, 6, and the subframe corresponding to the four subframe numbers may be predefined as the first subframe. The downlink control information is carried in the first predetermined time domain position on the four subframes, so that the paging can be directly obtained in the first predetermined time domain position regardless of which subframe of the four subframes is received by the UE.

This method is equivalent to fixing the first subframe, and ensuring that the set of the first subframe includes the above four subframes for transmitting paging. In addition, in the FDD system or the TDD system, in addition to the above four subframes for transmitting paging, other subframes may be predefined as the first subframe.

Another way is: change the mechanism for sending paging;

That is, the downlink control information is not carried in the first predetermined time domain position in the above four subframes, but the downlink control information may be carried in the first predetermined time domain location only on one of the subframes. Specifically, the following operations are performed: First, a preset subframe set including multiple subframes is predefined:

For example, the predefined set of subframes is {0, 4}, where the predefined may be that the base station defines which subframes are scheduled for the terminal according to certain parameters related to the terminal.

Then, an intersection of the subframe set and the paging message subframe set is obtained, where the paging message subframe set includes multiple subframes for sending a paging message:

For example, the paging message subframe set is a set of four subframes in the previous manner. For example, the subframe number of the subframe used for sending the paging may be: 0, 4, 5, 9; for example, for FDD The system determines an intersection of the predefined set of subframes {0, 4} and {0, 4, 5, 9}, and the intersection is {0, 4}. Then, determining, according to the terminal identifier of the terminal, and a preset selection rule, the paging subframe used to send a paging message to the terminal:

After determining the intersection {0, 4}, it is determined based on some preset rule which subframe in the intersection is sent to the low capability UE. Such a rule may be, but is not limited to: IMSI mod 2, IMSI is the identity of the UE, and mod 2 is because there are two subframes in the intersection. For example, if the value of the IMSI of the UE is 3, the calculation is based on the above rule, 3 mod 2=1, that is, the calculation result is 1, the paging subframe of the UE is the subframe #4 (ie, the calculation result is 1st, select #4 subframe in the intersection as the paging subframe for sending paging); assuming that the value of the IMSI of the UE is 2, based on the above rule, 2 mod 2=0, that is, the calculation result is 0, then The paging subframe of the UE is a subframe #0 (that is, when the calculation result is 0, the subframe #0 in the intersection is selected as the paging subframe for paging.) The paging subframe used herein for transmitting paging is also referred to as a first subframe.

Based on the foregoing manner of changing the mechanism for sending the paging, when the base station knows that the paging is sent to the low-capability UE, especially when the subframe set of the predefined multiple subframes does not match the paging message subframe set, the base station Based on the manner, the intersection of the subframe set and the paging message subframe set may be determined, and determining which subframe in the intersection sends the paging, so that the subframe for transmitting the paging is guaranteed to be carried in the first predetermined time domain location. The downlink control information ensures that the UE can correctly receive the paging without detecting the PCFICH channel.

Embodiment 6 FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal may perform the method according to any embodiment of the present invention. As shown in FIG. 7, the terminal may include: an information receiving unit 61 and a data acquiring unit 62;

The information receiving unit 61 is configured to receive downlink control information from the base station in a first predetermined time domain position in the predefined first subframe.

The data obtaining unit 62 is configured to receive downlink data carried on the physical downlink shared channel from the base station according to the indication of the downlink control information.

Further, the information receiving unit 61 is specifically configured to receive downlink control information from the base station in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical control The format is for indicating the first predetermined time domain location.

Further, the information receiving unit 61 is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined a second predetermined time domain position in the two subframes, where the system information block is used to indicate the predefined first subframe, and the second physical control format is used to indicate the second predetermined time Domain location.

Further, the information receiving unit 61 is further configured to: at the first predetermined time domain position in the predefined first subframe Before receiving the downlink control information, the base station receives the system information block in a second predetermined time domain position in the predefined second subframe according to the predefined second physical control format, where the system information block is used to indicate the third subframe. The second physical control format is used to indicate the second predetermined time domain location; another system information block is received from a third predetermined time domain location in the third subframe, and the another system information block is used. And indicating the predefined first subframe.

Embodiment 7 FIG. 8 is a schematic structural diagram of an embodiment of a base station according to the present invention. The base station may perform a method according to any embodiment of the present invention. As shown in FIG. 8, the base station may include: an information carrying unit 71 and a data sending unit 72;

The information carrying unit 71 is configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate to the terminal, the communication resource used by the physical downlink shared channel; The sending unit 72 is configured to send downlink data to the terminal by using the communication resource on the physical downlink shared channel.

Further, the information carrying unit 71 is specifically configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical control The format is for indicating the first predetermined time domain location.

Further, the information carrying unit 71 is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined Transmitting, by the second predetermined time domain position in the two subframes, a system information block, the system information block is used to indicate the predefined first subframe to the terminal, and the second physical control format is used to indicate the second Schedule time domain location.

Further, the system information block further carries indication information of the first predetermined time domain location.

Further, the information carrying unit 71 is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined a second predetermined time domain location in the second subframe, where the system information block is used to indicate a third subframe to the terminal, where the second physical control format is used to indicate the second predetermined time domain location; Another system information block is transmitted at a third predetermined time domain position in the third subframe, and the another system information block is used to indicate the predefined first subframe to the terminal.

Further, the system information block further carries the third predetermined time domain location information; and/or, the another system information block further carries the first predetermined time domain location information.

Further, the predefined first subframe is represented by the following information: a subframe identifier of the first subframe, or a rule and a parameter for acquiring a subframe identifier of the first subframe.

Further, the second subframe is a fifth subframe in one frame, and the first subframe includes the zeroth number Ten subframes up to the ninth.

Further, the first subframe includes: a paging subframe used to send a paging message.

Embodiment 8 FIG. 9 is a structural diagram of an entity of a terminal embodiment of the present invention. As shown in FIG. 9, the terminal includes: a wireless transceiver 91 and a processor 92;

The wireless transceiver 91 is configured to receive downlink control information from the base station in a first predetermined time domain position in the predefined first subframe.

The processor 92 is configured to receive downlink data carried on the physical downlink shared channel from the base station according to the indication of the downlink control information.

The terminal further includes an antenna 93. The wireless transceiver 91 receives downlink control information, and the processor 92 receives downlink data and the like, and receives information or data through the antenna 93.

Further, the wireless transceiver 91 is specifically configured to receive downlink control information from the base station in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical A control format is used to indicate the first predetermined time domain location.

Further, the wireless transceiver 91 is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined The second predetermined time domain position in the second subframe receives the system information block, the system information block is used to indicate the predefined first subframe, and the second physical control format is used to indicate the second predetermined Time domain location.

Further, the wireless transceiver 91 is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined a second predetermined time domain location in the second subframe receives a system information block, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the second predetermined time domain location; The third predetermined time domain position in the third subframe receives another system information block, and the another system information block is used to indicate the predefined first subframe.

Example nine

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 10, the base station may include: a wireless transceiver 1001 and a processor 1002;

The wireless transceiver 1001 is configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate, to the terminal, a communication resource used by the physical downlink shared channel; The processor 1002 is configured to send downlink data to the terminal by using a communication resource on the physical downlink shared channel.

The terminal further includes an antenna 1003, and the wireless transceiver 1001 sends downlink control information to The processor 92 transmits an operation such as downlink data, and the information is transmitted through the antenna 1003. Further, the wireless transceiver 1001 is specifically configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical A control format is used to indicate the first predetermined time domain location.

Further, the wireless transceiver 1001 is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined a second predetermined time domain position in the second subframe, where the system information block is used to indicate the predefined first subframe to the terminal, where the second physical control format is used to indicate the first Two predetermined time domain locations.

The system information block further carries indication information of the first predetermined time domain location.

Further, the wireless transceiver 1001 is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined a second predetermined time domain position in the second subframe, where the system information block is used to indicate a third subframe to the terminal, and the second physical control format is used to indicate the second predetermined time domain location And transmitting another system information block in a third predetermined time domain position in the third subframe, the another system information block being used to indicate the predefined first subframe to the terminal.

Further, the second subframe is a fifth subframe in a frame, and the one subframe includes ten subframes from the zeroth to the ninth.

It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be performed 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 downlink control information, which is characterized by:

And receiving, according to the indication of the downlink control information, downlink data carried on the physical downlink shared channel from the base station.

The method for transmitting downlink control information according to claim 1, wherein the first subframe is a subframe located in a predetermined time domain position in one frame, or is included in a frame in a predetermined time domain. The location within a collection of multiple subframes.

The method for transmitting downlink control information according to claim 1 or 2, wherein receiving downlink control information from the base station in the first predetermined time domain position in the predefined first subframe comprises: And defining, by the first physical control format, receiving downlink control information from the base station in a first predetermined time domain position in the predefined first subframe, where the first physical control format is used to indicate the first predetermined time domain location.

The method for transmitting downlink control information according to claim 1, wherein before the receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, the method further includes:

Receiving, according to a predefined second physical control format, a system information block in a second predetermined time domain position in a predefined second subframe, the system information block being used to indicate the predefined first subframe, The second physical control format is used to indicate the second predetermined time domain location.

The method for transmitting downlink control information according to claim 4, wherein the system information block further carries indication information of the first predetermined time domain location.

Receiving, according to a predefined second physical control format, a system information block in a second predetermined time domain position in a predefined second subframe, the system information block being used to indicate a third subframe, the second physical control a format for indicating the second predetermined time domain location;

Another system information block is received from a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe.

The method for transmitting downlink control information according to claim 6, wherein the system information block further carries indication information of the third predetermined time domain location; and/or, the another system The information block also carries indication information of the first predetermined time domain location.

The method for transmitting downlink control information according to any one of claims 4-7, wherein the predefined first subframe is represented by: a subframe identifier of the first subframe, or For obtaining the first The rules and parameters of the subframe identification of the subframe.

The method for transmitting downlink control information according to any one of claims 4 to 8, wherein the second subframe is a fifth subframe in a frame, and the one subframe includes a second subframe. Ten sub-frames from zero to ninth.

The method for transmitting downlink control information according to any one of claims 1 to 9, wherein the first subframe includes: a paging subframe used for transmitting a paging message.

A method for transmitting downlink control information, comprising:

The method for transmitting downlink control information according to claim 11, wherein the first subframe is a subframe located in a predetermined time domain position in one frame, or is included in a frame in a predetermined time domain. The location within a collection of multiple subframes.

The method for transmitting downlink control information according to claim 11 or 12, wherein the transmitting the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe comprises: The first physical control format sends downlink control information to the terminal in a first predetermined time domain location in the predefined first subframe, where the first physical control format is used to indicate the first predetermined time domain location.

The method for transmitting downlink control information according to claim 11, wherein before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, the method further includes: And transmitting, according to the predefined second physical control format, a system information block in a second predetermined time domain position in the predefined second subframe, where the system information block is used to indicate the predefined first subframe to the terminal The second physical control format is used to indicate the second predetermined time domain location.

The method for transmitting downlink control information according to claim 14, wherein the system information block further carries indication information of the first predetermined time domain location.

The method for transmitting the downlink control information according to claim 11, wherein before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, the method further includes: And transmitting, according to the predefined second physical control format, a system information block in a second predetermined time domain position in the predefined second subframe, where the system information block is used to indicate a third subframe to the terminal, where the second a physical control format is used to indicate the second predetermined time domain location;

Another system information block is transmitted at a third predetermined time domain location in the third subframe, the another system information block being used to indicate the predefined first subframe to the terminal.

The method for transmitting downlink control information according to claim 16, wherein the system information is The information block also carries indication information of the third predetermined time domain location; and/or the another system information block further carries indication information of the first predetermined time domain location.

The method for transmitting downlink control information according to any one of claims 14-17, wherein the predefined first subframe is represented by: a subframe identifier of the first subframe, or A rule and a parameter for acquiring a subframe identifier of the first subframe.

The method for transmitting downlink control information according to any one of claims 14 to 18, wherein the second subframe is a fifth subframe in a frame, and the one subframe includes a zeroth Ten sub-frames from number to ninth.

The method for transmitting downlink control information according to any one of claims 11 to 19, wherein the first subframe comprises: a paging subframe for transmitting a paging message.

21. A terminal, comprising:

22. The terminal of claim 21, wherein:

The information receiving unit is configured to receive, according to a predefined first physical control format, downlink control information from a base station in a first predetermined time domain position in a predefined first subframe, where the first physical control format is used. The first predetermined time domain location is indicated.

23. The terminal of claim 21, wherein:

The information receiving unit is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second sub Receiving, by the second predetermined time domain position in the frame, a system information block, the system information block is used to indicate the predefined first subframe, and the second physical control format is used to indicate the second predetermined time domain location .

24. The terminal of claim 21, wherein:

The information receiving unit is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second sub Receiving, by the second predetermined time domain position in the frame, a system information block, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the second predetermined time domain location; A third predetermined time domain location in the three subframes receives another system information block, the another system information block being used to indicate the predefined first subframe.

25. A base station, comprising: An information carrying unit, configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe, where the downlink control information is used to indicate, to the terminal, a communication resource used by the physical downlink shared channel;

And a data sending unit, configured to send downlink data to the terminal by using the communication resource on the physical downlink shared channel.

26. The base station of claim 25, wherein

The information carrying unit is specifically configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical control format is used. The first predetermined time domain location is indicated.

27. The base station according to claim 25, wherein

The information carrying unit is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second sub And transmitting, by the second predetermined time domain position in the frame, a system information block, where the system information block is used to indicate the predefined first subframe to the terminal, and the second physical control format is used to indicate the second predetermined time Domain location.

The base station according to claim 27, wherein the system information block further carries indication information of the first predetermined time domain location.

29. The base station according to claim 25, wherein

The information carrying unit is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second sub Transmitting, by the second predetermined time domain location in the frame, a system information block, the system information block is used to indicate a third subframe to the terminal, and the second physical control format is used to indicate the second predetermined time domain location; The third predetermined time domain position in the third subframe transmits another system information block, and the another system information block is used to indicate the predefined first subframe to the terminal.

The base station according to claim 29, wherein the system information block further carries the third predetermined time domain location information; and/or, the another system information block further carries The first predetermined time domain location information is described.

The base station according to any one of claims 27-30, wherein the predefined first subframe is represented by: a subframe identifier of the first subframe, or used to acquire the The rules and parameters of the subframe identification of the first subframe.

The base station according to any one of claims 27-30, wherein the second subframe is a fifth subframe in a frame, and the one subframe includes from the zeroth to the ninth. Ten sub-frames of the number.

The base station according to any one of claims 25 to 32, wherein the first subframe comprises: a paging subframe for transmitting a paging message.

34. A terminal, comprising: a wireless transceiver, configured to receive downlink control information from a base station in a first predetermined time domain position in a predefined first subframe;

35. The terminal of claim 34, wherein:

The wireless transceiver is configured to receive downlink control information from a base station in a first predetermined time domain position in a predefined first subframe according to a predefined first physical control format, where the first physical control format is Used to indicate the first predetermined time domain location.

36. The terminal of claim 34, wherein:

The wireless transceiver is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second The second predetermined time domain position in the subframe receives the system information block, the system information block is used to indicate the predefined first subframe, and the second physical control format is used to indicate the second predetermined time domain position.

37. The terminal of claim 34, wherein:

The wireless transceiver is further configured to: before receiving the downlink control information from the base station in the first predetermined time domain position in the predefined first subframe, according to the predefined second physical control format, in the predefined second a second predetermined time domain position in the subframe receives a system information block, the system information block is used to indicate a third subframe, and the second physical control format is used to indicate the second predetermined time domain location; The third predetermined time domain location in the third subframe receives another system information block, and the another system information block is used to indicate the predefined first subframe.

38. A base station, comprising:

And a processor, configured to send downlink data to the terminal on the physical downlink shared channel by using the communication resource.

39. The base station of claim 38, wherein

The wireless transceiver is configured to send downlink control information to the terminal in a first predetermined time domain position in the predefined first subframe according to the predefined first physical control format, where the first physical control format is Used to indicate the first predetermined time domain location.

40. The base station according to claim 38, wherein

The wireless transceiver is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain location in the predefined first subframe, according to the predefined second physical control format, in the predefined second Sending, by the second predetermined time domain position in the subframe, a system information block, where the system information block is used to indicate the predefined first subframe to the terminal, The second physical control format is for indicating the second predetermined time domain location.

41. The base station of claim 38, wherein

The wireless transceiver is further configured to: before the sending the downlink control information to the terminal in the first predetermined time domain location in the predefined first subframe, according to the predefined second physical control format, in the predefined second And transmitting, by the second predetermined time domain position in the subframe, a system information block, where the system information block is used to indicate a third subframe to the terminal, where the second physical control format is used to indicate the second predetermined time domain location; The third predetermined time domain position in the third subframe transmits another system information block, and the another system information block is used to indicate the predefined first subframe to the terminal.

The base station according to claim 40 or 41, wherein the predefined first subframe is represented by: a subframe identifier of the first subframe, or used to acquire the first The rules and parameters of the subframe identification of the subframe.

The base station according to any one of claims 40 to 42, wherein the second subframe is a fifth subframe in a frame, and the one subframe includes from the zeroth to the ninth. Ten sub-frames of the number.