WO2018059014A1 - Method and device for determining time sequence - Google Patents

Abstract

Embodiments of the present application relate to the technical field of wireless communications, and in particular, to a method and device for determining a time sequence, for use in resolving the problem in the prior art of having no method for indicating a time sequence used by a user equipment. In the embodiments of the present application, a network side device determines a search space corresponding to a target time sequence, wherein the target time sequence is a time sequence used by a user equipment indicated by the network side device, and the target time sequence is a first time sequence or a second time sequence; the network side device sends downlink control information (DCI) to the user equipment by means of the search space, so that the user equipment determines a corresponding target time sequence according to the search space in which the DCI is sent, wherein the network side device sends DCI of different sizes in different search spaces. In the embodiments of the present application, a user equipment determines a time sequence needing to be used according to an indication of a network side device.

Description

Method and device for determining timing

The present application claims priority to Chinese Patent Application No. 201610868285.X filed on Sep. 29, 2016, the entire disclosure of which is hereby incorporated by reference. In this application.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method and device for determining timing.

Background technique

With the development of mobile communication services, organizations such as the International Telecommunications Union (ITU) have defined higher user plane delay performance requirements for future mobile communication systems. One of the main methods for shortening the user delay performance is to reduce the transmission time interval (TTI) length. Another method is to improve the processing performance and reduce the processing time on the base station and the user equipment side. For downlink data transmission, if the processing time is reduced, the user equipment can perform feedback faster, and the base station can also perform scheduling faster. If the Time Division Duplex (TDD) system also uses 1 ms TTI length for transmission, the existing uplink scheduling or downlink feedback timing (for example, the 3rd Generation Partnership Project Long Term Evolution Release 13th Edition (3GPP LTE Rel) -13) and the uplink scheduling or downlink feedback timing defined in the previous version of the protocol are no longer applicable. A new uplink scheduling or downlink feedback timing needs to be defined according to the actual processing capability of the user equipment. If the user equipment is configured to use the new uplink scheduling or downlink feedback timing through the high-level signaling, there is no specific method to support the user equipment to roll back using the traditional uplink scheduling or downlink feedback timing.

In summary, there is currently no way to indicate the timing of user equipment usage.

Summary of the invention

The present application provides a method for determining timing to solve the problem in the prior art that there is no method for indicating the timing of user equipment usage.

Based on the above problem, the embodiment of the present application provides a method for determining a sequence, including:

The network side device determines a search space corresponding to the target timing; wherein the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing;

The network side device sends downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to the search space for sending the DCI;

The network side device sends different sizes of DCIs in different search spaces.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of the third generation partnership program long-term evolution release 13th edition 3GPP LTE Rel-13 and previous versions, where the second timing is 3GPP Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing capability in LTE Rel-14 and later.

Optionally, the network side device sends different sizes of DCIs in different search spaces, including:

Transmitting, by the network side device, an x-bit DCI in the common search space, and transmitting an x+y-bit DCI in the UE-specific search space; or

The network side device transmits an x bit DCI in the UE specific search space, and transmits x+y bit DCI in the common search space;

Wherein, y is a complement bit, and x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the network side device sends an x-bit DCI in a UE-specific search space of the secondary carrier; or

The network side device secondary carrier transmits x+y bit DCI in the UE specific search space.

Optionally, the network side device determines a search space corresponding to the target timing, and specifically includes:

Determining, by the network side device, that the first timing corresponds to the common search space, and determining that the second timing corresponds to the UE specific search space; or

The network side device determines that the first timing corresponds to the UE specific search space, and determines that the second timing corresponds to the common search space.

The embodiment of the present application further provides a method for determining a sequence, including:

The user equipment detects the downlink control information DCI sent by the network side device, and determines, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI; wherein the network side device is in a different search space. Detect different sizes of DCI;

The user equipment determines a corresponding target timing according to the search space; wherein the target timing is a timing at which the network side device indicates user equipment usage, and the target timing is a first timing or a second timing.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of the third generation partnership program long-term evolution release 13th edition 3GPP LTE Rel-13 and previous versions, where the second timing is 3GPP LTE Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing capability in Rel-14 and later versions.

Optionally, the detecting, by the user equipment, the DCI sent by the network side device, specifically includes:

The user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and detects the DCI sent by the network side device by using the x+y bit in the UE specific search space; or

The user equipment detects the DCI sent by the network side device by using the x+y bit in the common search space, and detects the DCI sent by the network side device by using the x bit in the UE specific search space;

Wherein, y is a complement bit, and x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the user equipment uses the x-bit to detect the DCI sent by the network-side device in the UE-specific search space of the secondary carrier; or

The user equipment detects the DCI sent by the network side device by using the x+y bit in the UE-specific search space of the secondary carrier.

Optionally, the determining, by the user equipment, the corresponding target timing according to the search space, specifically includes:

Determining, by the user equipment, that the target timing corresponding to the common search space is the first timing, determining that the target timing corresponding to the UE specific search space is the second timing; or

The user equipment determines that the target timing corresponding to the common search space is the second timing, and determines that the target timing corresponding to the UE specific search space is the first timing.

An embodiment of the present application is a network side device that determines timing, and includes:

a determining module, configured to determine a search space corresponding to the target timing; wherein the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing;

a sending module, configured to send downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to a search space that sends the DCI;

The network side device sends different sizes of DCIs in different search spaces.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of the third generation partnership program long-term evolution release 13th edition 3GPP LTE Rel-13 and previous versions, where the second timing is 3GPP Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing capability in LTE Rel-14 and later.

Optionally, the sending module is specifically configured to:

The network side device sends an x-bit DCI in the common search space, and sends the information in the UE-specific search space. Sending x+y bit DCI; or the network side device transmitting x bit DCI in the UE specific search space, transmitting x+y bit DCI in the common search space; wherein the y is a complement bit, Let x and y be positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the sending module is specifically configured to:

Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier.

Optionally, the determining module is specifically configured to:

Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space.

The embodiment of the present application further provides a user equipment for determining timing, including:

a detection module, configured to detect a downlink control information DCI sent by the network side device, and determine, according to the size of the DCI sent by the network side device, a search space used by the network side device to send a DCI; where the network side device is different Search space to detect DCI of different sizes;

And a processing module, configured to determine, according to the search space, a corresponding target timing; where the target timing is a timing indicating that the network side device uses the user equipment, where the target timing is a first timing or a second timing.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of the third generation partnership program long-term evolution release 13th edition 3GPP LTE Rel-13 and previous versions, where the second timing is 3GPP Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing capability in LTE Rel-14 and later.

Optionally, the detecting module is specifically configured to:

The user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and uses the x+y bit to detect the DCI sent by the network side device in the UE specific search space; or the user equipment is in the public The search space uses the x+y bit to detect the DCI sent by the network side device, and uses the x bit in the UE specific search space to detect the DCI sent by the network side device;

Wherein, y is a complement bit, and x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the detecting module is specifically configured to:

The user equipment detects the DCI sent by the network side device by using x bits in the UE specific search space of the secondary carrier; or the user equipment detects the DCI sent by the network side device by using the x+y bit in the UE specific search space of the secondary carrier.

Optionally, the processing module is specifically configured to:

Determining, by the user equipment, that the target timing corresponding to the common search space is the first timing, determining that a target timing corresponding to the UE specific search space is the second timing; or determining, by the user equipment, the common search space The corresponding target timing is the second timing, and determining that the target timing corresponding to the UE specific search space is the first timing.

The embodiment of the present application further provides a network side device for determining timing, including:

A processor for reading a program in the memory, performing the following process:

Determining the search space corresponding to the target timing;

The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing;

A transceiver for receiving and transmitting data under the control of a processor, specifically:

Transmitting downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to a search space for sending the DCI;

The network side device sends different sizes of DCIs in different search spaces.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of the third generation partnership program long-term evolution release 13th edition 3GPP LTE Rel-13 and previous versions, where the second timing is 3GPP Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing capability in LTE Rel-14 and later.

Optionally, the transceiver is specifically used to:

Transmitting an x-bit DCI in the common search space, transmitting x+y-bit DCI in the UE-specific search space; or transmitting, by the network-side device, an x-bit DCI in the UE-specific search space, in the public search The space transmits x + y bit DCI; wherein y is a complement bit, and x, y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all zero.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the transceiver is specifically configured to:

Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier.

Optionally, the processor is specifically configured to:

Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space.

An embodiment of the present invention further provides a user equipment for determining a sequence, including:

A transceiver for receiving and transmitting data under the control of a processor, specifically:

Detecting the downlink control information DCI sent by the network side device, and determining, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI;

The network side device detects different sizes of DCI in different search spaces;

A processor for reading a program in the memory, performing the following process:

Determining a corresponding target timing according to the search space;

The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing.

Optionally, the search space is a common search space or a UE-specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the transceiver is specifically used to:

Detecting DCI transmitted by the network side device using x bits in the common search space, detecting DCI sent by the network side device using x+y bits in the UE specific search space; or detecting using x+y bits in the common search space. The DCI sent by the network side device detects the DCI sent by the network side device by using x bits in the UE specific search space; wherein the y is a complement bit, and the x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when multi-carrier transmission, the transceiver is specifically used to:

The DCI transmitted by the network side device is detected using the x bit in the UE-specific search space of the secondary carrier; or the DCI transmitted by the network side device is detected using the x+y bit in the UE-specific search space of the secondary carrier.

Optionally, the processor is specifically configured to:

Determining that the target timing corresponding to the common search space is the first timing, determining that the target timing corresponding to the UE-specific search space is the second timing; or determining that the target timing corresponding to the common search space is the first timing The second timing determines that the target timing corresponding to the UE specific search space is the first timing.

In the embodiment of the present application, when the network side device needs to indicate the timing used by the user equipment, determining the target timing corresponds to The search space is sent to the user equipment through the determined search space; after detecting the DCI sent by the network side device, the user equipment determines the sequence to be used according to the search space used by the network side to send the DCI. Therefore, the user equipment can determine the timing to be used according to the indication of the network side device.

DRAWINGS

1 is a schematic structural diagram of a system for determining timing according to an embodiment of the present application;

2 is a schematic diagram of uplink scheduling and downlink feedback according to an embodiment of the present application;

3 is a schematic structural diagram 1 of a network side device for determining timing according to an embodiment of the present application;

4 is a schematic structural diagram 1 of a user equipment for determining a sequence according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram 2 of a network side device for determining timing according to an embodiment of the present application; FIG.

6 is a schematic structural diagram 2 of a user equipment for determining a sequence according to an embodiment of the present application;

FIG. 7 is a flowchart 1 of a method for determining timing according to an embodiment of the present application;

8 is a second flowchart of a method for determining timing according to an embodiment of the present application;

FIG. 9 is a flowchart of a process for determining timing according to an embodiment of the present application.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

In the following description, the implementation of the cooperation between the network side and the user equipment side is first described, and finally the implementations from the network side and the user equipment side are respectively explained, but this does not mean that the two must cooperate with the implementation. In fact, When the network side is implemented separately from the user equipment side, the problems existing on the network side and the user equipment side are also solved. Only when the two are combined, will get better technical results.

As shown in FIG. 1 , the system for replacing the timing of the example of the present application includes the network side device 10 and the user device 20:

The network side device 10 is configured to determine a search space corresponding to the target timing, and send the DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to the search space for sending the DCI;

The user equipment 20 is configured to detect a DCI sent by the network side device, and determine, according to the size of the DCI sent by the network side device, a search space used by the network side device to send the DCI, and determine a corresponding target timing according to the search space. .

It should be noted that the network side device sends different sizes of DCIs in different search spaces; correspondingly, the user equipment detects different sizes of DCIs in different search spaces.

The target timing is a timing at which the network side device indicates usage by the user equipment, where the target timing is a first timing or a second timing;

Optionally, the first timing in the embodiment of the present application is an uplink scheduling or downlink feedback timing defined in a protocol of the 3GPP LTE Rel-13 and the previous version;

The second timing in the embodiment of the present application is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions.

In the 3GPP LTE Rel-14 and later versions, two user equipments are included, one is a UE with high processing capability, and the other is a user equipment with low processing capability. In the embodiment of the present application, the second timing is 3GPP LTE. In Rel-14 and later versions, only the UEs with high processing capability can use the timing, and the user equipment with low processing capability cannot use the second timing.

It should be noted that the user equipment 20 in the embodiment of the present application is a user equipment that supports the latest processing capability, and the user equipment that supports the latest processing capability refers to a user equipment whose processing speed is higher than a conventional process. The user equipment 20 of the embodiment of the present application is capable of supporting the second timing.

Optionally, the search space in the embodiment of the present application is a public search space or a user equipment UE specific search space.

Since the user equipment 20 of the embodiment of the present application is a user equipment supporting the latest processing capability, when the network side device sends the downlink control information DCI to the user equipment 20 through the search space, the common search space and the UE-specific search are used for the same DCI. The size of the DCI sent by the space can be different.

In the embodiment of the present application, the network side device presets the correspondence between the search space and the target timing. After determining the target timing, the network side device 10 determines the search space corresponding to the target timing according to the correspondence between the search space and the target timing, and uses the determined The search space sends a DCI to the user device 20.

The following description is based on the correspondence between the search space and the target timing:

Case 1: The network side device determines that the first timing corresponds to the common search space, and determines that the second timing corresponds to the UE specific search space.

When the network side device 10 determines that the user equipment 20 needs to be instructed to use the first timing, the network side device 10 transmits the DCI to the user equipment 20 through the common search space; when the network side device 10 determines that the user equipment 20 needs to be instructed to use the second timing, the network The side device 10 transmits the DCI to the user device 20 through the UE-specific search space.

Correspondingly, the user equipment 20 detects the DCI sent by the network side device 10, and determines the target timing corresponding to the search space according to the search space used by the network side device 10 to transmit the DCI.

Optionally, the user equipment determines that the target timing corresponding to the common search space is the first timing, and determines The target timing corresponding to the UE-specific search space is the second timing.

When the user equipment 20 determines that the search space used by the network side device 10 to transmit the DCI is a common search space, it is determined that the target timing indicated by the network side device is the first timing; and the user equipment 20 determines that the search space used by the network side device 10 to transmit the DCI is When the UE specifies the search space, it is determined that the target timing indicated by the network side device is the second timing.

Case 2: The network side device determines that the first timing corresponds to the UE specific search space, and determines that the second timing corresponds to the common search space.

When the network side device 10 determines that the user equipment 20 needs to be instructed to use the first timing, the network side device 10 transmits the DCI to the user equipment 20 through the UE specific search space; when the network side device 10 determines that the user equipment 20 needs to be instructed to use the second timing, The network side device 10 transmits the DCI to the user equipment 20 through the common search space.

Correspondingly, the user equipment 20 detects the DCI sent by the network side device 10, and determines the target timing corresponding to the search space according to the search space used by the network side device 10 to transmit the DCI.

Optionally, the user equipment determines that the target timing corresponding to the common search space is the second timing, and determines that the target timing corresponding to the UE specific search space is the first timing.

When the user equipment 20 determines that the search space used by the network side device 10 to transmit the DCI is a common search space, it is determined that the target timing indicated by the network side device is the second timing; and the user equipment 20 determines that the search space used by the network side device 10 to transmit the DCI is When the UE specifies the search space, it is determined that the target timing indicated by the network side device is the first timing.

The common search space in the embodiment of the present application is used to transmit downlink control information related to Paging (Paging Message), Random Access Response (RA Response), Broadcast Control Channel (BCCH), and the like ( Community level public information), this information is the same for all UEs. The UE-specific search space is used to transmit control information (UE level information) related to a downlink shared channel (DL-SCH), an uplink shared channel (UL-SCH), and the like. However, when the UE-specific search space does not have enough available resources, the common search space can also be used to transmit control information belonging to a particular UE. However, the public search space can only be used to transfer smaller DCI format (format) 0/1A/3/3A/1C. Therefore, there may be overlapping areas between the common search space and the UE-specific search space.

In order to facilitate the user equipment 20 to determine the search space used by the network side device 10 for the DCI, the network side device in the embodiment of the present application sends different sizes of DCI in different search spaces, so that the user equipment 20 determines according to the detected DCI size. The search space used by the DCI sent by the network side device.

The following is a description of the situation:

Case 1: The network side device sends an x bit DCI in the common search space, and sends an x+y bit DCI in the UE specific search space.

Wherein, y is a complement bit, and x and y are positive integers.

After determining the target timing, the network side device 10 of the embodiment of the present application determines the search space used for transmitting the DCI according to the correspondence between the target timing and the search space. If the network side device 10 determines to transmit the DCI in the common search space, the network side device 10 transmits the x bit DCI in the common search space; if the network side device 10 determines to transmit the DCI in the UE specific search space, the network side device 10 is The DCI that adds y complement bits is transmitted in the UE-specific search space, that is, the x+y-bit DCI is transmitted in the UE-specific search space.

Correspondingly, the user equipment 20 needs to detect the DCI sent by the network side device 10 in the public search space and the UE specific search space respectively, and the user equipment 20 detects the DCI sent by the network side device 10 in the following manner:

Optionally, the user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and uses the x+y bit in the UE specific search space to detect the DCI sent by the network side device.

Optionally, the complement bit y=1 and the y complement bits are all 0.

After the user equipment 20 detects the different sizes of DCIs used in the different search spaces, the user equipment determines, according to the size of the detected DCI, the search space used by the network side device 10 to send the DCI, specifically:

If the user equipment 20 detects that the size of the DCI sent by the network side device 10 is x bits, it is determined that the search space used by the network side device 10 to transmit the DCI is a common search space; if the user equipment 20 detects the DCI sent by the network side device 10 The size is x+y bits, and it is determined that the search space used by the network side device 10 to transmit the DCI is the UE-specific search space.

Optionally, the complement bit is located at the end of the DCI information bit.

Case 2, the network side device sends x bit DCI in the UE specific search space, and sends x+y bit DCI in the common search space;

Wherein, y is a complement bit, and x and y are positive integers.

After determining the target timing, the network side device 10 of the embodiment of the present application determines the search space used for transmitting the DCI according to the correspondence between the target timing and the search space. If the network side device 10 determines to transmit the DCI in the UE specific search space, the network side device 10 transmits the x bit DCI in the UE specific search space; if the network side device 10 determines to transmit the DCI in the common search space, the network side device 10 A DCI that adds y complement bits is transmitted in the common search space, ie, x+y bit DCI is transmitted in the common search space.

Correspondingly, the user equipment 20 needs to detect the DCI sent by the network side device 10 in the public search space and the UE specific search space respectively, and the user equipment 20 detects the DCI sent by the network side device 10 in the following manner:

Optionally, the user equipment detects the DCI sent by the network side device by using the x+y bit in the common search space, and detects the DCI sent by the network side device by using the x bit in the UE specific search space.

Optionally, the complement bit y=1 and the y complement bits are all 0.

After the user equipment 20 detects the different sizes of DCIs used in the different search spaces, the user equipment determines, according to the size of the detected DCI, the search space used by the network side device 10 to send the DCI, specifically:

If the user equipment 20 detects that the size of the DCI sent by the network side device 10 is x+y bits, it is determined that the search space used by the network side device 10 to send the DCI is a common search space; if the user equipment 20 detects the network side device 10 sends the The size of the DCI is x bits, and it is determined that the search space used by the network side device 10 to transmit the DCI is the UE-specific search space.

Optionally, the complement bit is located at the end of the DCI information bit.

It should be noted that, in the case of multi-carrier transmission, the network-side device sends the DCI to the user equipment 20 through the UE-specific search space of the secondary carrier, which may be sent in the following manner:

Manner 1, the network side device sends an x bit DCI in a UE specific search space of the secondary carrier;

Correspondingly, the user equipment detects the DCI sent by the network side device by using x bits in the UE specific search space of the secondary carrier.

Manner 2: The network side device secondary carrier sends the x+y bit DCI in the UE specific search space;

Correspondingly, the user equipment detects the DCI sent by the network side device by using the x+y bit in the UE-specific search space of the secondary carrier.

The following is a detailed description of the two implementations.

Example 1:

The embodiment of the present application is a single carrier transmission. If the network side device 10 uses the common search space to send the DCI to indicate that the user equipment uses the first sequence, the UE-specific search space is used to transmit the DCI to indicate that the user equipment uses the second sequence; and the network-side device 10 uses the common search space to send the DCI to the size of x bits. The size of the DCI transmitted using the UE-specific search space is x+y bits.

The user equipment 20 detects the DCI transmitted by the network side device using x bits in the common search space, and detects the DCI transmitted by the network side device using the x+y bit in the UE specific search space. If the size of the DCI detected by the user equipment 20 is x bits, it is determined that the DCI is sent by the network side device 10 by using a common search space, and then determining that the timing indicated by the network side device is the first timing; if the DCI detected by the user equipment 20 If the size is x+y, it is determined that the DCI is sent by the network side device 10 in the UE-specific search space, and then the timing indicated by the network side device is determined to be the second sequence.

Specifically, as shown in FIG. 2, it is assumed that the user equipment 20 detects the downlink scheduling signaling in the subframe n, and the subframe n includes a physical downlink control channel (PDCCH) and a physical downlink shared channel (Physical Downlink Shared). Channel, PDSCH); if the user equipment 20 detects a Cell-Radio Network Temporary Identifier (C-RNTI) or semi-persistent scheduling in a common search space The x-bit DCI scrambled by the Semi-Persistent Schedule Network Temporary Identifier (SPS-RNTI) is considered to be the corresponding feedback position of the downlink data transmission for its scheduling in the subframe n+4, if the UE-specific search If the space detects the C-RNTI or the SPS-RNTI scrambled x-bit DCI, it considers that the corresponding feedback position for the downlink data transmission scheduled for it is in subframe n+3.

Example 2:

Embodiments of the present application are multi-carrier transmission.

1. The network side device 10 sends the DCI to the user equipment 20 on the primary carrier:

If the network side device 10 uses the common search space to transmit the DCI on the primary carrier to indicate that the user equipment uses the first sequence, the use of the UE-specific search space in the primary carrier to transmit the DCI indicates that the user equipment uses the second sequence; and the network-side device 10 uses the common search space. The size of the transmitted DCI is x bits, and the size of the DCI transmitted using the UE-specific search space is x+y bits.

The user equipment 20 detects the DCI transmitted by the network side device using the x bit in the common search space on the primary carrier, and detects the DCI transmitted by the network side device using the x+y bit in the UE specific search space on the primary carrier. If the size of the DCI detected by the user equipment 20 is x bits, it is determined that the DCI is sent by the network side device 10 by using a common search space, and then determining that the timing indicated by the network side device is the first timing; if the DCI detected by the user equipment 20 If the size is x+y, it is determined that the DCI is sent by the network side device 10 in the UE-specific search space, and then the timing indicated by the network side device is determined to be the second sequence.

2. The network side device 10 sends the DCI to the user equipment 20 on the secondary carrier:

Since there is no common search space on the secondary carrier, the network side device does not support the timing indicating the use of the user equipment on the secondary carrier.

If the network side device 10 transmits the x-bit DCI of the user equipment 20 in the UE-specific search space of the secondary carrier, the user equipment 20 detects the DCI sent by the network side device 10 using the x-bit in the UE-specific search space of the secondary carrier;

If the network side device 10 transmits the DCI of the x+y bit of the user equipment 20 in the UE-specific search space of the secondary carrier, the user equipment 20 detects the DCI sent by the network side device 10 by using the x+y bit in the UE-specific search space of the secondary carrier. .

As shown in FIG. 3, the network side device 10 in the system for determining the timing in the embodiment of the present application includes:

a determining module 301, configured to determine a search space corresponding to the target timing; wherein the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing;

The sending module 302 is configured to send downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to the search space for sending the DCI, where the network side device is Different sizes of DCI are sent in different search spaces.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the sending module 302 is specifically configured to:

The network side device transmits an x bit DCI in the common search space, and transmits x+y bit DCI in the UE specific search space; or the network side device sends an x bit DCI in the UE specific search space, Transmitting x+y bit DCI in the common search space; wherein y is a complement bit, and x, y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier is transmitted, the sending module 302 is specifically configured to:

Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier.

Optionally, the determining module 301 is specifically configured to:

Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space.

As shown in FIG. 4, the user equipment 20 in the system for determining timing in the embodiment of the present application includes:

The detecting module 401 is configured to detect a DCI sent by the network side device, and determine, according to the size of the DCI sent by the network side device, a search space used by the network side device to send a DCI; where the network side device searches in different Spatial detection of DCIs of different sizes;

The processing module 402 is configured to determine a corresponding target timing according to the search space; where the target timing is a timing that the network side device indicates the user equipment usage, and the target timing is a first timing or a second timing.

Optionally, the search space is a common search space or a UE-specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the detecting module 401 is specifically configured to:

The user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and uses the x+y bit to detect the DCI sent by the network side device in the UE specific search space; or the user equipment is in the public The search space uses the x+y bit to detect the DCI sent by the network side device, and uses the x bit to detect the DCI sent by the network side device in the UE specific search space; wherein the y is a complement bit, and the x and y are positive Integer.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier is transmitted, the detecting module 401 is specifically configured to:

The user equipment detects the DCI sent by the network side device by using x bits in the UE specific search space of the secondary carrier; or the user equipment detects the DCI sent by the network side device by using the x+y bit in the UE specific search space of the secondary carrier.

Optionally, the processing module 402 is specifically configured to:

Determining, by the user equipment, that the target timing corresponding to the common search space is the first timing, determining that a target timing corresponding to the UE specific search space is the second timing; or determining, by the user equipment, the common search space The corresponding target timing is the second timing, and determining that the target timing corresponding to the UE specific search space is the first timing.

As shown in FIG. 5, the network side device included in the system for determining timing in the embodiment of the present application includes: a bus 500, a processor 501, a transceiver 502, a bus interface 503, a memory 504, and an antenna 505.

The processor 501 is configured to read a program in the memory 504 and perform the following process:

Determining the search space corresponding to the target timing;

The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing;

The transceiver 502 is configured to receive and send data under the control of the processor 501, specifically:

Transmitting a DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to a search space for sending the DCI;

The network side device sends different sizes of DCIs in different search spaces.

Optionally, the search space is a common search space or a UE-specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the transceiver 502 is specifically configured to:

Transmitting an x-bit DCI in the common search space, transmitting x+y-bit DCI in the UE-specific search space; or transmitting, by the network-side device, an x-bit DCI in the UE-specific search space, in the public search The space transmits x + y bit DCI; wherein y is a complement bit, and x, y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all zero.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier is transmitted, the transceiver 502 is specifically configured to:

Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier.

Optionally, the processor 501 is specifically configured to:

Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space.

In FIG. 5, a bus architecture (represented by bus 500), bus 500 may include any number of interconnected buses and bridges, and bus 500 will include one or more processors and memory 504 represented by general purpose processor 501. The various circuits of the memory are linked together. The bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 503 provides an interface between bus 500 and transceiver 502. Transceiver 502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 502 receives external data from other devices. The transceiver 502 is configured to send the processed data of the processor 501 to other devices. Depending on the nature of the computing system, a user interface 505 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 501 is responsible for managing the bus 500 and the usual processing, running a general purpose operating system as described above. The memory 504 can be used to store data used by the processor 501 when performing operations.

Optionally, the processor 501 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).

As shown in FIG. 6, the user equipment included in the system for determining the timing of the embodiment of the present application includes: a bus 600, a processor 601, a transceiver 602, a bus interface 603, a memory 604, and a user interface 605.

The transceiver 602 is configured to receive and send data under the control of the processor 601. Specifically:

Detecting the DCI sent by the network side device, and determining, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI;

The network side device detects different sizes of DCI in different search spaces;

The processor 601 is configured to read a program in the memory 604 and perform the following process:

Determining a corresponding target timing according to the search space;

The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing.

Optionally, the search space is a common search space or a UE-specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the transceiver 602 is specifically configured to:

Detecting DCI transmitted by the network side device using x bits in the common search space, detecting DCI sent by the network side device using x+y bits in the UE specific search space; or detecting using x+y bits in the common search space. The DCI sent by the network side device detects the DCI sent by the network side device by using x bits in the UE specific search space; wherein the y is a complement bit, and the x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when multi-carrier transmission, the transceiver 602 is specifically configured to:

The DCI transmitted by the network side device is detected using the x bit in the UE-specific search space of the secondary carrier; or the DCI transmitted by the network side device is detected using the x+y bit in the UE-specific search space of the secondary carrier.

Optionally, the processor 601 is specifically configured to:

Determining that the target timing corresponding to the common search space is the first timing, determining that the target timing corresponding to the UE-specific search space is the second timing; or determining that the target timing corresponding to the common search space is the first timing The second timing determines that the target timing corresponding to the UE specific search space is the first timing.

In FIG. 6, a bus architecture (represented by bus 600), bus 600 may include any number of interconnected buses and bridges, and bus 600 will include one or more processors and memory 604 represented by general purpose processor 601. The various circuits of the memory are linked together. The bus 600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 603 provides an interface between bus 600 and transceiver 602. Transceiver 602 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 602 receives external data from other devices. The transceiver 602 is configured to send the processed data of the processor 601 to other devices. Depending on the nature of the computing system, a user interface 605 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 601 is responsible for managing the bus 600 and the usual processing, running a general purpose operating system as described above. The memory 604 can be used to store data used by the processor 601 in performing operations.

Optionally, the processor 601 can be a CPU, an ASIC, an FPGA, or a CPLD.

Based on the same inventive concept, the embodiment of the present application further provides a method for determining timing of a network side device and a method for determining timing of the user equipment. The principle of solving the problem is similar to the system for determining timing according to the embodiment of the present application. The implementation of these methods can be seen in the implementation of the system, and the details are not repeated here.

As shown in FIG. 7, the method for determining timing in the embodiment of the present application includes:

Step 701: The network side device determines a search space corresponding to the target timing, where the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing;

Step 702: The network side device sends a DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to the search space for sending the DCI; where the network side device is different. Send DCIs of different sizes in the search space.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. The uplink scheduling or downlink ACK/NACK feedback timing that the UE can use.

Optionally, the network side device sends an x bit DCI in the common search space, and sends an x+y bit DCI in the UE specific search space; or the network side device sends in the UE specific search space. An x-bit DCI, transmitting x+y-bit DCI in the common search space;

Wherein, y is a complement bit, and x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the network side device sends an x-bit DCI in a UE-specific search space of the secondary carrier; or the network-side device secondary carrier sends the x+y-bit DCI in the UE-specific search space.

Optionally, the network side device determines that the first timing corresponds to the common search space, and determines that the second timing corresponds to the UE specific search space; or the network side device determines the first timing correspondence Describe the UE-specific search space, and determine that the second timing corresponds to the common search space.

As shown in FIG. 8, the method for determining timing in the embodiment of the present application includes:

Step 801: The user equipment detects the DCI sent by the network side device, and determines, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI, where the user equipment detects in different search spaces. Different sizes of DCI;

Step 802: The user equipment determines a corresponding target timing according to the search space. The target timing is a timing that the network side device indicates the user equipment uses, and the target timing is a first timing or a second timing.

Optionally, the search space is a public search space or a user equipment UE specific search space.

Optionally, the first timing is uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is high processing capability in 3GPP LTE Rel-14 and later versions. UE Uplink scheduling or downlink ACK/NACK feedback timing that can be used.

Optionally, the user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and uses the x+y bit to detect the DCI sent by the network side device in the UE specific search space; or the user equipment. Using the x+y bit in the common search space to detect the DCI sent by the network side device, and using the x bit in the UE specific search space to detect the DCI sent by the network side device;

Wherein, y is a complement bit, and x and y are positive integers.

Optionally, the complement bit y=1 and the y complement bits are all 0.

Optionally, the complement bit is located at the end of the DCI information bit.

Optionally, when the multi-carrier transmission is performed, the user equipment uses the x-bit to detect the DCI sent by the network-side device in the UE-specific search space of the secondary carrier; or the user equipment uses the x+y-bit in the UE-specific search space of the secondary carrier. Detects the DCI sent by the network side device.

Optionally, the user equipment determines that the target timing corresponding to the common search space is the first timing, and determines that a target timing corresponding to the UE specific search space is the second timing; or the user equipment determines The target timing corresponding to the common search space is the second timing, and determining a target timing corresponding to the UE-specific search space is the first timing.

As shown in FIG. 9, the process flow chart of determining the timing of the embodiment of the present application includes the following steps:

Step 901: The network side device determines a search space corresponding to the target timing.

Step 902: The network side device sends a DCI to the user equipment by using the search space.

Step 903: The user equipment detects the DCI sent by the network side device.

Step 904: Determine, according to the size of the DCI sent by the network side device, a search space used by the network side device to send the DCI.

Step 905: The user equipment determines a corresponding target timing according to the search space.

The present application has been described above with reference to block diagrams and/or flowchart illustrations of a method, apparatus (system) and/or computer program product according to embodiments of the present application. It will be understood that one block of the block diagrams and/or flowchart illustrations and combinations of blocks of the block diagrams and/or flowchart illustrations can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, a processor of a special purpose computer, and/or other programmable data processing apparatus to produce a machine such that instructions for execution via a computer processor and/or other programmable data processing apparatus are created for A method of implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

Accordingly, the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system Used with or in conjunction with instruction execution systems. In the context of the present application, a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (48)

A method for determining timing, characterized in that the method comprises: The network side device determines a search space corresponding to the target timing; wherein the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing; The network side device sends the downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to the search space for sending the DCI, where the network side device searches for different Different sizes of DCI are sent in space. The method of claim 1 wherein the search space is a common search space or a user equipment UE specific search space. The method of claim 1, wherein the first timing is uplink scheduling or downlink feedback defined in a protocol of the 3rd Generation Partnership Project Long Term Release Release 13 3GPP LTE Rel-13 and prior versions. Timing, the second timing is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions. The method according to claim 1, wherein the network side device sends different sizes of DCIs in different search spaces, including: Transmitting, by the network side device, an x-bit DCI in the common search space, and transmitting an x+y-bit DCI in the UE-specific search space; or The network side device transmits an x bit DCI in the UE specific search space, and transmits x+y bit DCI in the common search space; Wherein, y is a complement bit, and x and y are positive integers. The method of claim 4 wherein said complement bit y = 1 and y pad bits are zero. The method of claim 4 wherein said complement bits are located at the end of the DCI information bits. The method according to claim 4, wherein, in multi-carrier transmission, the network side device transmits an x-bit DCI in a UE-specific search space of the secondary carrier; or The network side device secondary carrier transmits x+y bit DCI in the UE specific search space. The method according to claim 2, wherein the network side device determines a search space corresponding to the target timing, and specifically includes: Determining, by the network side device, that the first timing corresponds to the common search space, and determining that the second timing corresponds to the UE specific search space; or The network side device determines that the first timing corresponds to the UE specific search space, and determines that the second timing corresponds to the common search space. A method for determining timing, characterized in that the method comprises: The user equipment detects the downlink control information DCI sent by the network side device, and determines, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI; wherein the user equipment detects in different search spaces. Different sizes of DCI; The user equipment determines a corresponding target timing according to the search space; wherein the target timing is a timing at which the network side device indicates user equipment usage, and the target timing is a first timing or a second timing. The method of claim 9, wherein the search space is a common search space or a user equipment UE specific search space. The method according to claim 9, wherein the first timing is uplink scheduling or downlink feedback defined in a protocol of the 3rd Generation Partnership Project Long Term Release Release 13 3GPP LTE Rel-13 and prior versions. Timing, the second timing is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions. The method of claim 10, wherein the detecting, by the user equipment, the DCI sent by the network side device comprises: The user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and detects the DCI sent by the network side device by using the x+y bit in the UE specific search space; or The user equipment detects the DCI sent by the network side device by using the x+y bit in the common search space, and detects the DCI sent by the network side device by using the x bit in the UE specific search space; Wherein, y is a complement bit, and x and y are positive integers. The method of claim 12 wherein said complement bits y = 1 and y complement bits are zero. The method of claim 12 wherein said complement bits are located at the end of the DCI information bits. The method according to claim 12, wherein, in multi-carrier transmission, the user equipment detects, by using x bits, the DCI sent by the network side device in a UE-specific search space of the secondary carrier; or The user equipment detects the DCI sent by the network side device by using the x+y bit in the UE-specific search space of the secondary carrier. The method according to claim 10, wherein the determining, by the user equipment, the corresponding target timing according to the search space, specifically includes: Determining, by the user equipment, that a target timing corresponding to the common search space is the first timing, determining the UE The target timing corresponding to the specific search space is the second timing; or The user equipment determines that the target timing corresponding to the common search space is the second timing, and determines that the target timing corresponding to the UE specific search space is the first timing. A network side device for determining timing, comprising: a determining module, configured to determine a search space corresponding to the target timing; wherein the target timing is a timing indicating that the network side device uses the user equipment, and the target timing is a first timing or a second timing; a sending module, configured to send downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to a search space that sends the DCI; The network side device sends different sizes of DCIs in different search spaces. The network side device according to claim 17, wherein the search space is a common search space or a user equipment UE specific search space. The network side device according to claim 17, wherein the first timing is an uplink scheduling defined in a protocol of the third generation partnership plan long-term evolution release 13th edition 3GPP LTE Rel-13 and prior versions or Downlink feedback timing, the second timing is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions. The network side device according to claim 17, wherein the sending module is specifically configured to: The network side device transmits an x bit DCI in the common search space, and transmits x+y bit DCI in the UE specific search space; or the network side device sends an x bit DCI in the UE specific search space, Transmitting x+y bit DCI in the common search space; wherein y is a complement bit, and x, y are positive integers. The network side device according to claim 20, wherein said complement bit y=1 and y pad bits are 0. The network side device according to claim 20, wherein said complement bit is located at a position of a terminal of the DCI information bit. The network side device according to claim 20, wherein, in the case of multi-carrier transmission, the sending module is specifically configured to: Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier. The network side device according to claim 18, wherein the determining module is specifically configured to: Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space. A user equipment for determining timing, characterized in that it comprises: a detection module, configured to detect a downlink control information DCI sent by the network side device, and determine, according to the size of the DCI sent by the network side device, a search space used by the network side device to send a DCI; where the network side device is different Search space to detect DCI of different sizes; a processing module, configured to determine a corresponding target timing according to the search space; wherein the target timing is a timing that the network side device indicates usage by the user equipment, where the target timing is a first timing or a second timing. The user equipment according to claim 25, wherein the search space is a common search space or a user equipment UE specific search space. The user equipment according to claim 25, wherein the first timing is uplink scheduling or downlink defined in a protocol of the 3rd Generation Partnership Project Long Term Release Release 13th 3GPP LTE Rel-13 and prior versions. Feedback timing, the second timing is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions. The user equipment according to claim 26, wherein the detecting module is specifically configured to: The user equipment detects, by using x bits, the DCI sent by the network side device in the common search space, and uses the x+y bit to detect the DCI sent by the network side device in the UE specific search space; or the user equipment is in the public The search space uses the x+y bit to detect the DCI sent by the network side device, and uses the x bit to detect the DCI sent by the network side device in the UE specific search space; wherein the y is a complement bit, and the x and y are positive Integer. The user equipment according to claim 28, wherein said complement bit y=1 and y complement bits are zero. The user equipment of claim 28 wherein said complement bits are located at the end of the DCI information bits. The user equipment according to claim 28, wherein the detecting module is specifically configured to: The user equipment detects the DCI sent by the network side device by using x bits in the UE specific search space of the secondary carrier; or the user equipment detects the DCI sent by the network side device by using the x+y bit in the UE specific search space of the secondary carrier. The user equipment according to claim 26, wherein the processing module is specifically configured to: Determining, by the user equipment, that the target timing corresponding to the common search space is the first timing, determining that a target timing corresponding to the UE specific search space is the second timing; or determining, by the user equipment, the common search space The corresponding target timing is the second timing, and determining that the target timing corresponding to the UE specific search space is the first timing. A network side device for determining timing, comprising: A processor for reading a program in the memory, performing the following process: Determining the search space corresponding to the target timing; The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing; A transceiver for receiving and transmitting data under the control of a processor, specifically: Transmitting downlink control information DCI to the user equipment by using the search space, so that the user equipment determines a corresponding target timing according to a search space for sending the DCI; The network side device sends different sizes of DCIs in different search spaces. The network side device according to claim 33, wherein the search space is a common search space or a user equipment UE specific search space. The network side device according to claim 33, wherein the first timing is an uplink scheduling defined in a protocol of the third generation partnership plan long-term evolution release 13th edition 3GPP LTE Rel-13 and prior versions or Downlink feedback timing, the second timing is an uplink scheduling or downlink ACK/NACK feedback timing that can be used by a UE with high processing capability in 3GPP LTE Rel-14 and later versions. The network side device according to claim 33, wherein the transceiver is specifically configured to: Transmitting an x-bit DCI in the common search space, transmitting x+y-bit DCI in the UE-specific search space; or transmitting, by the network-side device, an x-bit DCI in the UE-specific search space, in the public search The space transmits x + y bit DCI; wherein y is a complement bit, and x, y are positive integers. The network side device according to claim 36, wherein the complement bit y=1 and the y pad bits are 0. A network side device according to claim 36, wherein said complement bit is located at the end of the DCI information bit. The network side device according to claim 36, wherein, in the case of multi-carrier transmission, the transceiver is specifically configured to: Transmitting x-bit DCI in a UE-specific search space of the secondary carrier; or transmitting x+y-bit DCI in a UE-specific search space of the secondary carrier. The network side device according to claim 34, wherein the processor is specifically configured to: Determining that the first timing corresponds to the common search space, determining that the second timing corresponds to the UE-specific search space, or determining that the first timing corresponds to the UE-specific search space, and determining the second timing correspondence The public search space. A user equipment for determining timing, characterized in that it comprises: A transceiver for receiving and transmitting data under the control of a processor, specifically: Detecting the downlink control information DCI sent by the network side device, and determining, according to the size of the DCI sent by the network side device, the search space used by the network side device to send the DCI; The network side device detects different sizes of DCI in different search spaces; A processor for reading a program in the memory, performing the following process: Determining a corresponding target timing according to the search space; The target timing is a timing at which the network side device indicates usage by the user equipment, and the target timing is a first timing or a second timing. The user equipment of claim 41, wherein the search space is a common search space or a UE-specific search space. The user equipment according to claim 41, wherein the first timing is an uplink scheduling or downlink feedback timing defined in a protocol of 3GPP LTE Rel-13 and a previous version, and the second timing is 3GPP LTERel- Uplink scheduling or downlink ACK/NACK feedback timing that can be used by UEs with high processing power in Release 14 and later. The user equipment according to claim 42, wherein the transceiver is specifically configured to: Detecting DCI transmitted by the network side device using x bits in the common search space, detecting DCI sent by the network side device using x+y bits in the UE specific search space; or detecting using x+y bits in the common search space. The DCI sent by the network side device detects the DCI sent by the network side device by using x bits in the UE specific search space; wherein the y is a complement bit, and the x and y are positive integers. The user equipment according to claim 44, wherein said complement bit y=1 and y complement bits are zero. The user equipment of claim 44 wherein said complement bits are located at the end of the DCI information bits. The user equipment according to claim 44, wherein, in the case of multi-carrier transmission, the transceiver is specifically configured to: The DCI transmitted by the network side device is detected using the x bit in the UE-specific search space of the secondary carrier; or the DCI transmitted by the network side device is detected using the x+y bit in the UE-specific search space of the secondary carrier. The user equipment according to claim 42, wherein the processor is specifically configured to: Determining that the target timing corresponding to the common search space is the first timing, determining that the target timing corresponding to the UE-specific search space is the second timing; or determining that the target timing corresponding to the common search space is the first timing The second timing determines that the target timing corresponding to the UE specific search space is the first timing.

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