CN102917328B

CN102917328B - A kind of indicating means, relevant apparatus and system based on specific sub-frame

Info

Publication number: CN102917328B
Application number: CN201110219802.8A
Authority: CN
Inventors: 余政; 于映辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2016-06-08
Anticipated expiration: 2031-08-02
Also published as: CN102917328A

Abstract

The embodiment of the present invention provides a kind of indicating means, relevant apparatus and system based on specific sub-frame, for complete the instruction of specific sub-frame by the signaling of MAC layer or physical layer. Embodiment of the present invention method comprises: specific sub-frame is determined according to subframe type different in radio frames in base station, described radio frames is one section of time-domain resource that business transmission is carried out in base station, and described specific sub-frame is for providing the guard time of changing between different subframe type; Base station sends the configuration of described specific sub-frame and/or the indication information of position by the signaling of media access control MAC layer or physical layer to subscriber equipment, make subscriber equipment determine available upstream or downstream resource according to the indication information of the configuration of described specific sub-frame and/or position, and in transmission or the reception of the enterprising row data of described upstream or downstream resource. In addition, the present invention also provides the relevant apparatus and the system that realize the method.

Description

Indication method based on specific subframe, related device and system

Technical Field

The present invention relates to a wireless communication system, and in particular, to a Long Term Evolution (LTE) wireless communication system and an Advanced long term evolution (LTE-Advanced) wireless communication system, and more particularly, to a method, a related apparatus, and a system for indicating based on a specific subframe.

Background

A wireless communication system can provide wireless services such as voice and data, and is generally a multiple access wireless system, in which a base station transmits downlink services to a user equipment in a downlink and receives uplink services transmitted by the user equipment in an uplink, and in response, the user equipment transmits uplink services to the base station in the uplink and receives downlink services transmitted by the base station in the downlink.

The base station allocates transmission resources, specifically, allocates carriers for an uplink and a downlink, and allocates subframe types of available subframes on the carriers, where the subframe types are distinguished according to usage states of the available subframes, for example, an uplink transmission subframe in which an uplink service is transmitted, or a downlink transmission subframe in which a downlink service is transmitted, or a flexible transmission subframe in which flexible changes are performed according to a service load.

Currently, the carrier allocation method for transmission resources by a base station is generally the following two methods: first, carriers used by an uplink and a downlink are a pair of carriers (i.e., an uplink carrier and a downlink carrier), and an uplink service and a downlink service are transmitted on different carriers, that is, a Frequency Division Duplex (FDD) communication mode, and second, carriers used by the uplink and the downlink are the same carrier, but the uplink service and the downlink service are transmitted on different subframes of the same carrier, that is, a TDD (time division duplex) communication mode.

With the development of wireless communication systems, in addition to providing voice services, the multimedia industry (e.g., internet access, video on demand, etc.) has become a main content. For the application scenario in which the carriers used by the uplink and the downlink are a pair of carriers, the uplink and the downlink services are transmitted on different carriers, but because the uplink and the downlink usually have a characteristic of asymmetric load, there may be idle transmission resources on the carrier with light load, for example, when the load of the uplink service is light and the load of the downlink service is high, the idle transmission resources on the uplink carrier may be used for transmitting the downlink service. At this time, since the base station and the user equipment need to transmit and receive data on one channel of carrier, a specific subframe needs to be configured between subframe types with different functions to provide protection time for transmission function conversion, but in the existing FDD system, there is no notification mechanism for a specific subframe.

Disclosure of Invention

The embodiment of the invention provides an indication method based on a specific subframe, a related device and a system, which are used for finishing indication of the specific subframe through signaling of an MAC layer or a physical layer.

The indication method based on the specific subframe provided by the invention comprises the following steps: the base station determines a specific subframe according to different subframe types in a wireless frame, wherein the wireless frame is a section of time domain resource for the base station to perform service transmission, and the specific subframe is used for providing protection time for conversion between different subframe types; and the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment determines available uplink or downlink resources according to the indication information of the configuration and/or the position of the specific subframe and sends or receives data on the uplink or downlink resources.

Optionally, the sending, by the base station, the indication information of the configuration and/or the location of the specific subframe to the user equipment through signaling of the MAC layer or the physical layer includes:

the base station marks the configuration and/or the position of the specific subframe through a redundant bit or a redundant field of a control element CE in the signaling of the MAC layer or a newly defined control element CE, and sends the marked signaling of the MAC layer to the user equipment; or, the base station marks the configuration and/or position of the specific subframe through a redundant bit or a redundant field in a signaling carried by a physical downlink control channel, or a newly defined field, and sends the marked signaling carried by the physical downlink control channel to the user equipment.

Optionally, the base station sends the indication information of the configuration and/or the location of the specific subframe to the user equipment through signaling of an MAC layer or a physical layer, and further includes:

the base station marks the configuration of the specific subframe and the subframe type pattern in the radio frame through the redundant bit or the redundant field of the control element CE in the signaling of the MAC layer or the newly defined control element CE, and sends the marked signaling of the MAC layer to the user equipment; or, the base station marks the configuration of the specific subframe and the subframe type pattern in the radio frame through a redundant bit or a redundant field in a signaling carried by a physical downlink control channel or a newly defined field, and sends the marked signaling carried by the physical downlink control channel to the user equipment.

Optionally, the redundant bit or redundant field of the control element CE in the signaling of the MAC layer specifically includes: redundant bits or redundant fields of Control Elements (CEs) used for carrier activation or deactivation in signaling of the MAC layer; the signaling carried by the physical downlink control channel specifically includes: scheduling paging information, or system information, or signaling carried by a physical downlink control channel of a random access response.

Optionally, the determining, by the base station, a specific subframe according to different subframe types in the radio frame includes:

the base station determines the subframe type of each subframe in the wireless frame; if the former subframe and the latter subframe of the subframe N in the wireless frame have different subframe types, determining the subframe N as a specific subframe, wherein N is the subframe index number in the wireless frame.

Optionally, the subframe type includes: an uplink transmission subframe, a downlink transmission subframe, a flexible transmission subframe and an unused subframe; the specific subframe is also used to determine a location of available resources within the radio frame.

The indication method based on the specific subframe provided by the invention comprises the following steps: the method comprises the steps that user equipment obtains indication information of configuration and/or position of a specific subframe by receiving signaling of an MAC layer or a physical layer sent by a base station, wherein the specific subframe is used for providing protection time for conversion among different subframe types; and the user equipment determines available uplink or downlink resources according to the configuration of the specific subframe and/or the indication information of the position, and transmits or receives data on the uplink or downlink resources.

Optionally, the obtaining, by the ue, the indication information of the configuration and/or the location of the specific subframe by receiving a signaling of an MAC layer or a physical layer sent by the base station includes:

the user equipment receives a signaling of an MAC layer sent by a base station, and acquires the configuration and/or position indication information of the specific subframe through a redundant bit or a redundant field of a Control Element (CE) in the signaling of the MAC layer or a newly defined Control Element (CE); or, the user equipment receives a signaling carried by a physical downlink control channel sent by the base station, and acquires the indication information of the configuration and/or the position of the specific subframe through a redundant bit or a redundant field in the signaling carried by the physical downlink control channel or a newly defined field.

The base station provided by the invention comprises: the subframe determining unit is used for determining a specific subframe according to different subframe types in a radio frame, wherein the radio frame is a section of time domain resource for carrying out service transmission by a base station, and the specific subframe is used for providing protection time for conversion among different subframe types;

and the indicating unit is used for sending the indicating information of the configuration and/or the position of the specific subframe to the user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment determines available uplink or downlink resources according to the indicating information of the configuration and/or the position of the specific subframe and sends or receives data on the uplink or downlink resources.

Optionally, the indicating unit includes:

the MAC indicating module is used for marking the configuration and/or the position of the specific subframe through a redundant bit or a redundant field of a control element CE in signaling of an MAC layer or a newly defined control element CE, and sending the marked signaling of the MAC layer to user equipment; or, the physical indication module is configured to mark the configuration and/or the position of the specific subframe through a redundant bit or a redundant field in a signaling carried by a physical downlink control channel, or a newly defined field, and send the marked signaling carried by the physical downlink control channel to the user equipment.

Optionally, the MAC indication module is further specifically configured to mark the configuration of the specific subframe and a subframe type pattern in the radio frame by using a redundant bit or a redundant field of a control element CE in a signaling of the MAC layer or a newly defined control element CE, and send the marked signaling of the MAC layer to the user equipment;

the physical indication module is further specifically configured to mark the configuration of the specific subframe and the subframe type pattern in the radio frame by using a redundant bit or a redundant field in a signaling carried by a physical downlink control channel, or a newly defined field, and send the marked signaling carried by the physical downlink control channel to the user equipment.

Optionally, the subframe determining unit includes:

a subframe type determining module, configured to determine a subframe type of each subframe in the radio frame, where the subframe type includes: an uplink transmission subframe, a downlink transmission subframe, a flexible transmission subframe and an unused subframe;

a specific subframe determining module, configured to determine, if a previous subframe and a subsequent subframe of a subframe N in the radio frame have different subframe types, that the subframe N is a specific subframe, where N is a subframe index number in the radio frame; the specific subframe is also used to determine a location of available resources within the radio frame.

The user equipment provided by the invention comprises: an indication receiving unit, configured to obtain indication information of configuration and/or location of a specific subframe by receiving signaling of an MAC layer or a physical layer sent by a base station, where the specific subframe is used to provide protection time for switching between different subframe types; and the data transceiving unit is used for determining available uplink or downlink resources according to the configuration and/or position indication information of the specific subframe, and transmitting or receiving data on the uplink or downlink resources.

Optionally, the indication receiving unit includes:

a first obtaining module, configured to receive a signaling of an MAC layer sent by a base station, and obtain indication information of a configuration and/or a position of the specific subframe through a redundant bit or a redundant field of a control element CE in the signaling of the MAC layer or a newly defined control element CE; or, the second obtaining module is configured to receive a signaling carried by a physical downlink control channel sent by the base station, and obtain the indication information of the configuration and/or the position of the specific subframe through a redundant bit or a redundant field in the signaling carried by the physical downlink control channel, or a newly defined field.

The present invention provides a wireless communication system, including: a base station and a user equipment;

the base station is used for determining a specific subframe according to different subframe types in a radio frame, the radio frame is a section of time domain resource for the base station to perform service transmission, and the specific subframe is used for providing protection time for conversion between different subframe types; sending the indication information of the configuration and/or the position of the specific subframe to user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment determines available uplink or downlink resources according to the indication information of the configuration and/or the position of the specific subframe and sends or receives data on the uplink or downlink resources;

the user equipment is configured to obtain the indication information of the configuration and/or the position of the specific subframe by receiving the signaling of the MAC layer or the physical layer sent by the base station, determine an available uplink or downlink resource according to the indication information of the configuration and/or the position of the specific subframe, and send or receive data on the uplink or downlink resource.

In the embodiment of the invention, after a base station determines a specific subframe according to different subframe types in a wireless frame, indication information of the configuration and/or the position of the specific subframe is sent to user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment can determine the protection time for conversion between different subframe types according to the indication information of the configuration and/or the position of the specific subframe, thereby determining available uplink or downlink resources and transmitting or receiving data on the uplink or downlink resources.

Drawings

FIG. 1 is a flowchart illustrating a specific subframe-based indication method according to an embodiment of the present invention;

FIG. 2 is another flow chart of an indication method based on specific subframes according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating radio frame allocation in an embodiment of the present invention;

FIG. 4 is another illustration of radio frame allocation in an embodiment of the present invention;

FIG. 5 is another illustration of radio frame allocation in an embodiment of the present invention;

FIG. 6 is a schematic flow chart of a specific subframe-based indication method according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a base station in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a user equipment in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1, an embodiment of a method based on special subframes in an embodiment of the present invention includes:

101. the base station determines a specific subframe according to different subframe types in a radio frame;

the base station determines a specific subframe according to different subframe types in a radio frame; the radio frame is a time domain resource for the base station to perform service transmission, and in the prior art, the radio frame may be composed of 10 subframes, or a combination of subframes of a specific time length, which may be determined according to a related protocol and standard content, and is not limited herein. The specific subframes are used to provide guard times for switching between different subframe types.

In a wireless communication system, a base station allocates transmission resources according to load states of uplink traffic and downlink traffic, specifically, the base station allocates carriers for uplink and downlink, and determines subframe types in radio frames for the uplink and downlink (that is, determines subframe types of subframes in radio frames on each carrier), where the subframe types are determined according to usage states of available subframes, the base station may allocate one carrier for the uplink and downlink, or allocate a pair of carriers for the uplink and downlink, and the subframe types of subframes on the carriers may be uplink transmission subframes or downlink transmission subframes. It should be noted that, after the ue accesses the network, the base station may obtain carriers allocated to the uplink and the downlink in the communication mode between the ue and the base station, and obtain specific subframes in radio frames of the uplink and the downlink as available subframes, and what transmission direction the available subframes have.

When a radio frame on one transmission link contains both uplink transmission subframes and downlink transmission subframes, the base station and the user equipment need to reserve some protection time in the radio frame for the uplink advanced transmission of the user equipment, the conversion between the uplink transmission and the downlink reception of the user equipment, the conversion between the downlink reception and the uplink transmission of the user equipment, the conversion between the uplink reception and the downlink transmission of the base station, or the conversion between the downlink transmission and the uplink reception of the base station, etc.; therefore, the base station needs to set a specific subframe between different subframe types to ensure that there is sufficient guard time for uplink and downlink transmission switching of the base station and the user equipment.

102. And the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of an MAC layer or a physical layer.

And the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of the MAC layer or the physical layer, so that the user equipment determines the available uplink or downlink resources according to the indication information of the configuration and/or the position of the specific subframe and sends or receives data on the available uplink or downlink resources. The signaling described above may be in the form of messages or information.

For example, in the MAC layer control element for carrier activation or deactivation, when the number of the secondary carriers is only 1, at this time, the control element CE has redundant bits of 7 bits, the base station may use a bits of the 7 bits to mark a subframe type pattern (pattern) in the radio frame, the user equipment may determine the positions of various subframes, such as a specific subframe, a downlink transmission subframe, and an uplink transmission subframe, according to the subframe type pattern, and then indicate the specific configuration of the specific subframe using the remaining 7-a bits, and a detailed configuration method is described in the following embodiments.

In the physical layer signaling, there are some redundant bits or redundant fields, which may also be used to mark the configuration and/or location of a specific subframe, and the specific content is also described in the following embodiments.

In the embodiment of the invention, the base station determines the specific subframe according to different subframe types in the radio frame. And sending the indication information of the configuration and/or the position of the specific subframe to the user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment can determine the protection time for conversion between different subframe types according to the indication information of the configuration and/or the position of the specific subframe, thereby determining the available uplink or downlink resources and sending or receiving data on the uplink or downlink resources.

In practical applications, the special subframe may also have other uses, and specifically referring to fig. 2, another embodiment of the method based on the special subframe in the embodiment of the present invention includes:

201. the base station determines the subframe type of each subframe in a wireless frame;

after the user equipment accesses the network, the base station can acquire the carriers allocated to the uplink and the downlink in the communication mode of the user equipment and the base station, and acquire specific subframes in the wireless frames of the uplink and the downlink as available subframes and the transmission direction capacity of the available subframes, so that the subframe type of each subframe in the wireless frames can be determined.

202. The base station determines a specific subframe according to the subframe type;

after the base station knows the subframe type of each subframe in the radio frame, the base station sets a specific subframe for the radio frame:

in general, if a previous subframe P and a subsequent subframe M of a subframe N have different subframe types, the subframe N may be determined to be a specific subframe. The subframes N, P, and M may be subframes in the same radio frame, or subframes belonging to different radio frames (e.g., two consecutive radio frames, where the subframe types of the subframes in the previous radio frame are all downlink transmission subframes, and the subframe types of the subframes in the next radio frame are all uplink transmission subframes, and at this time, the specific subframe N may be the last subframe of the previous radio frame, or the first subframe of the next radio frame).

The subframe types of the subframe P and the subframe M may be an uplink transmission subframe, a downlink transmission subframe, a flexible transmission subframe, or an unused subframe. If one subframe does not carry out any service transmission, the subframe is called as an unused subframe; a flexible transmission subframe refers to a subframe whose subframe type can be flexibly changed according to the transmission requirement of a service, for example, in one radio frame, the subframe is a downlink transmission subframe, and in another radio frame, the subframe is an uplink transmission subframe.

If the specific subframe is used to provide the guard time interval to the ue, the following two cases may be specifically included:

1. the base station needs to inform the configuration and the position of a specific subframe to the user equipment, and the specific subframe provides protection time for the user equipment, so that the propagation delay caused by signal transmission is overcome, the sending time of the uplink service is advanced for the user equipment, and the receiving and sending interference between two transmission directions (uplink transmission and downlink transmission) on the same carrier is avoided.

The special subframe may be composed of three parts (DwPTS, GP, UpPTS), DwPTS for downlink transmission, GP being a guard time interval, UpPTS for uplink transmission. The time occupied by the DwPTS, GP, UpPTS may vary, so that the combination of DwPTS, GP, UpPTS of different sizes constitutes different configurations of the specific subframe.

2. There are uplink transmission subframes and downlink transmission subframes in the same carrier, and transmission conversion of uplink and downlink services is also required in the same carrier, but a complete specific subframe is used for time conversion. At this time, the base station only needs to notify the user equipment of the position of the specific subframe, the time length of the specific subframe is the guard time interval provided for the user equipment, and the guard time interval is used for overcoming the propagation delay caused by signal transmission and enabling the user equipment to advance the sending time of the uplink service.

If the specific subframe is used to determine the location of the available resource in the radio frame, the following steps may be specifically performed:

when a base station and user equipment use a carrier to carry out service transmission, if a wireless frame of the carrier has a downlink transmission subframe and an unused subframe, or an uplink transmission subframe and an unused subframe; in this scenario, a specific subframe may be set, and the specific subframe is used to implicitly or explicitly determine subframe resources of a downlink transmission subframe or an uplink transmission subframe in a radio frame, which may be used for data transmission.

203. And the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of an MAC layer or a physical layer.

And the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of the MAC layer or the physical layer, so that the user equipment sends or receives data according to the indication information of the configuration and/or the position of the specific subframe.

Signaling of the MAC layer: the base station notifies the configuration and/or the position of a specific subframe to the user equipment through a redundant bit or a redundant field in a Control Element (CE) of MAC layer signaling or a newly defined control element CE, and further may notify the user equipment of the positions of an uplink transmission subframe and a downlink transmission subframe in a radio frame, or a subframe type pattern.

E.g. mac ce contains a field for carrier activation or deactivation. This field consists of 8 bits (b0, b 1......, b7), where when the state of bi is 0, it indicates that the (i + 1) th subcarrier is deactivated; when the state of bi is 1, it indicates that the (i + 1) th subcarrier is activated. It will be appreciated by those skilled in the art that it is also possible to provide: when the state of bi is 1, the i +1 th subcarrier is deactivated; when the state of bi is 0, it indicates that the (i + 1) th subcarrier is activated.

When the downlink traffic load is large and the uplink traffic load is low, the base station may set a part of subframes in the radio frame corresponding to the uplink carrier as downlink transmission subframes to perform downlink traffic transmission. At this time, the uplink carrier carrying the downlink service may be taken as a subcarrier, and the b0 bit in the field for activating or deactivating the MACCE carrier is set to 1, so as to activate the subcarrier for the user equipment. At this time, 7 bits in the mac ce carrier activation or deactivation field are not used, and the 7 bits may be used as redundant bits. Therefore, the configuration and/or the position of the specific subframe may be notified to the user equipment by using the 7 redundant bits, and further, the positions of the uplink transmission subframe and the downlink transmission subframe, or the subframe type pattern may be notified to the user equipment by using the 7 redundant bits. If a subframe type pattern (pattern) in a radio frame can be indicated by a bits, the user equipment can determine the positions of a specific subframe, a downlink transmission subframe and an uplink transmission subframe according to the subframe type pattern; the base station indicates the specific configuration of a specific subframe with the remaining 7-a bits.

According to the state of the a redundant bits, the user equipment can determine the positions of a specific subframe, a downlink transmission subframe and an uplink transmission subframe in the radio frame. Table 1 illustrates a subframe pattern that may be indicated when a is 3. In table 1, D indicates that the type of the subframe is a downlink transmission subframe; s represents that the type of the subframe is a specific subframe; in table 1, the location of the uplink transmission subframe is implicitly determined. When a subframe is neither a specific subframe nor a downlink transmission subframe, the subframe is regarded as an uplink transmission subframe.

Table 1: mapping indication of subframe pattern

According to the state of the 7-a redundant bits, the user equipment can determine the specific configuration of the specific subframe. Table 2 illustrates that when a is 4, a specific configuration of a specific subframe may be indicated with 3 bits. In table 1, L1 indicates the length of time for downlink traffic; l2 denotes the time length of the guard interval; l3 indicates the length of time for the upstream traffic. The sum of the lengths of L1, L2, L3 is the time length of one subframe. L1, or L2, or L3 may be 0.

Table 2: indicating configuration of specific subframes

Bit state	L1	L2	L3
				000	X1	Y1	Z1
001	X2	Y2	Z2
				010	X3	Y3	Z3
011	X4	Y4	Z4
				100	0	Y5	0
101	X6	Y6	0
				110	0	Y7	Z7
111	Reservation	Reservation	Reservation

Physical layer signaling: the base station may notify the configuration and the position of the specific subframe to the user equipment through a redundant bit or a redundant field in signaling carried by a Physical Downlink Control Channel (PDCCH), or a newly defined field, and further may notify the user equipment of the positions of an uplink transmission subframe and a downlink transmission subframe in a radio frame, or a subframe type pattern. Specifically, the signaling carried by the physical downlink control channel may be: scheduling paging information, or system information, or signaling carried by a physical downlink control channel of a random access response.

The PDCCH, as used for scheduling the system information block 1(SIB 1: SystemInformationBlock1), is transmitted every 20 ms. Certain reserved bits or fields in the PDCCH may be used to indicate the configuration and location of a particular subframe. For example, in the PDCCH of the scheduling SIB1, the most important 1 bit for transmission power control (TransmissionPowerControl) and 3 bits for HARQ process indication are taken as reserved bits. Accordingly, the base station may inform the user equipment of the configuration and/or location of the specific subframe using the above-mentioned 4 reserved bits. Similar to the above signaling of the MAC layer, a bits may be used to mark a subframe type pattern on a radio frame, and the ue may determine the positions of a specific subframe, a downlink transmission subframe, and an uplink transmission subframe according to the subframe type pattern, and perform configuration indication of the specific subframe by using the remaining 4-a bits, which is not described herein again.

In addition to the indication information of the configuration and/or the location of the specific subframe sent to the user equipment through the signaling of the MAC layer or the physical layer, the indication information of the configuration and/or the location of the specific subframe may also be sent to the user equipment through system information, for example, a reserved bit in the system information may be added, or a field may be added to the system information to mark the configuration and/or the location of the specific subframe.

System information: the base station performs configuration of a specific subframe and/or position indication of the specific subframe through Radio Resource Control (RRC) common information or dedicated signaling.

Such as: a new field may be added in the system information block X (SIBX: systemlnformationblock X) for configuration and location indication of a specific subframe. The specific bit states, the positions and configurations of the specific subframes, and the corresponding relationships among the positions of the specific subframes, the downlink transmission subframes, and the uplink transmission subframes may be similar to those described in "signaling of the MAC layer," and are not described herein again.

For convenience of understanding, the specific subframe-based indication method provided by the embodiment of the present invention will be described in detail below by specific examples.

As described above, after the ue accesses the network, the base station may obtain the carriers allocated to the uplink and the downlink in the communication mode between the ue and the base station, and obtain specific subframes in the radio frames of the uplink and the downlink as the available subframes and what transmission direction the available subframes have, and the following provides application scenarios of different subframe types, specifically:

referring to fig. 3, the base station and the ue are applied to a frequency division duplex system, the base station and the ue perform service communication by using a pair of carriers f1 and f2, the base station performs downlink service transmission by using a carrier f1, and the ue performs uplink service transmission by using a carrier f 2.

When the uplink and downlink traffic load between the base station and the user equipment is asymmetric, and the following traffic load is greater than the uplink traffic load, the base station may use the idle subframe on the carrier f2 to perform downlink traffic transmission, as shown in fig. 3, the subframe in the direction of the arrow downward is a downlink transmission subframe, and the subframe in the direction of the arrow upward is an uplink transmission subframe.

When the downlink traffic load is large and the uplink traffic load is low, the base station may configure some or all of the subframes in the radio frame corresponding to the carrier f2 as downlink transmission subframes to transmit downlink traffic. In fig. 3, each radio frame is composed of 10 subframes. On the carrier f1, all subframes within a radio frame are used as downlink transmission subframes (e.g., the subframe 101 is a downlink transmission subframe). In the radio frame corresponding to the carrier f2, some subframes are downlink subframes (e.g. subframes 201 and 202 are downlink subframes), and some subframes are uplink subframes (e.g. subframes 301 and 302 are uplink subframes).

At this time, after the base station specifies the downlink transmission subframe in the radio frame of the carrier f2, the specific subframe is set according to the subframe type of each subframe: if the former subframe N-1 and the latter subframe N +1 of the subframe N in the wireless frame are different subframe types, determining that the subframe N is a specific subframe, and N is the index number of the wireless frame. As shown in fig. 3, the specific subframes in radio frame f2 are subframe 202 and subframe 302. In the embodiment of the present invention, the specific subframe is used to provide a guard time for switching between the downlink transmission subframe and the uplink transmission subframe.

After determining the specific subframe, the base station may mark, in the MAC layer control element CE activated or deactivated by the carrier, a subframe type pattern in the radio frame corresponding to the carrier f2 with 3 bits in the redundant bit or redundant field of the control element CE, and mark the configuration and/or position of the specific subframe with the remaining 4 bits, and after completing marking of the control element CE in the signaling of the MAC layer, the base station notifies the user equipment of the configuration and/or position of the specific subframe through the signaling of the MAC layer.

The base station needs to notify the user equipment of the configuration and position of the specific subframe and the positions of the uplink transmission subframe and the downlink transmission subframe on the carrier, so that the user equipment receives the downlink service or transmits the uplink service on the correct transmission resource.

Referring to fig. 4, the base station and the ue may communicate with each other by using a single carrier, and only a part of subframes on a radio frame corresponding to the carrier are available subframes with the same unidirectional transmission capability, and another part of subframes are unused subframes.

In this embodiment, only a part of subframes are used for transmission of downlink traffic or uplink traffic within one radio frame, and the other subframes are not used for any transmission. As shown in fig. 4, the carrier f3 may be a single carrier, and the base station configures only a part of subframes as downlink subframes (e.g., subframe 101 is a downlink subframe) and subframes after 201 are unused subframes (e.g., subframe 301 is an unused subframe) in a radio frame corresponding to the carrier f 3.

In this embodiment, only downlink transmission subframes are allocated to a radio frame corresponding to the carrier f3, and no transmission conversion of uplink and downlink services is required on f3, in this scenario, the base station only needs to notify the user equipment of the positions of specific subframes allocated on the carrier, so that the user equipment stops operating the remaining subframes when the user equipment has finished performing operations on the downlink transmission subframes. The unused subframe may serve as a guard time interval if there is at least one unused subframe. If n subframes are used subframes and n +1 subframes are unused subframes, then n subframes are regarded as special subframes (e.g., 201). The base station can inform the user equipment of the position of the specific subframe through the signaling of an MAC layer or a physical layer, so that the user equipment can determine according to the position of the specific subframe: within one radio frame, the other subframes following a particular subframe are all unused subframes.

Referring to fig. 5, a base station and a ue can communicate with each other by using a single carrier, and all subframes on the carrier are available subframes in the same traffic transmission direction.

In this embodiment, in a radio frame, all subframes in the radio frame corresponding to a carrier are used for transmitting downlink traffic or uplink traffic. As shown in fig. 5, f4 is a single carrier, and at f4, the base station configures all subframes in one radio frame as downlink transmission subframes (for example, 101 is a downlink transmission subframe), and all subframes in a subsequent radio frame are uplink transmission subframes.

Although all subframes in one radio frame have the same directional transmission function, such as 10 subframes between subframe 101 and subframe 201, the subframes in the immediately following radio frame are all used for transmission in the opposite direction, and at this time, the problem of switching uplink and downlink traffic transmission on the same transmission link also needs to be considered, so, as described above, the base station needs to set subframe 201 as a specific subframe in the radio frame of subframe 101 to subframe 201 (i.e. the last subframe of the previous radio frame is set as the specific subframe, and optionally, the first subframe of the next radio frame is also set as the specific subframe), and the guard time provided by the specific subframe is used for switching uplink and downlink traffic between the base station and the ue and for advancing the timing of the ue.

After determining the specific subframe, the base station may notify the ue of the location and configuration of the specific subframe through signaling of the MAC layer or the physical layer, so that the ue may prepare a guard time according to the location and configuration of the specific subframe for service transmission of a next radio frame.

The application scenarios in the embodiments of the present invention are described above by using only some examples, and it is understood that in practical applications, there may be many more application scenarios, and the details are not limited herein.

In the above, the method for indicating based on the specific subframe in the embodiment of the present invention is described from the perspective of the base station, and in the following, the method for indicating based on the specific subframe in the embodiment of the present invention is described from the user equipment side, please refer to fig. 6, where another embodiment of the method for indicating based on the specific subframe in the embodiment of the present invention includes:

601. the user equipment acquires the configuration and/or position indication information of a specific subframe by receiving the signaling of an MAC layer or a physical layer sent by a base station;

the user equipment obtains the indication information of the configuration and/or the position of a specific subframe by receiving the signaling of the MAC layer or the physical layer, wherein the specific subframe is used for providing the protection time for converting between different subframe types and can also be used for determining the position of the available resources in the radio frame. The subframe type can be an uplink transmission subframe, a downlink transmission subframe, a flexible transmission subframe or an unused subframe; the flexible transmission subframe refers to a subframe of which the subframe type can be flexibly changed according to the transmission requirement of the service.

Specifically, if the ue receives the signaling of the MAC layer, the ue extracts the configuration and/or position of the specific subframe from the redundant bit or redundant field of the control element CE in the signaling of the MAC layer or the newly defined control element CE;

if the signaling carried by the PDCCH is received by the user equipment, the configuration and/or the position of the specific subframe are extracted from a redundant bit or a redundant field or a newly defined field in the signaling carried by the PDCCH.

602. And the user equipment transmits or receives data according to the configuration of the specific subframe and/or the indication information of the position.

And the user equipment adjusts the configuration on the corresponding transmission link according to the configuration and/or the position indication information of the specific subframe, determines available uplink or downlink resources, and transmits or receives data on the available uplink or downlink resources.

After acquiring the indication information of the configuration and/or the position of the specific subframe, the user equipment determines the purpose of the specific subframe by combining the subframe type contained in the radio frame. If the specific subframe is used for providing protection time for switching between different subframe types, the user equipment sets the protection time required when the transmission direction in the transmission link is changed according to the configuration of the specific subframe, so as to avoid the transceiving interference between two transmission directions on the same transmission link. If the specific subframe is used for determining the position of the available resource in the radio frame, the user equipment determines the specific time for stopping service transmission according to the position of the specific subframe.

Referring to fig. 7, a logic structure of an embodiment of a base station according to the present invention for performing the method for indicating based on the specific subframe is described below, where the embodiment of the base station according to the present invention includes:

a subframe determining unit 701, configured to determine a specific subframe according to different subframe types in a radio frame, where the radio frame is a segment of time domain resource for performing service transmission by a base station, and the specific subframe is used to provide protection time for switching between different subframe types;

an indicating unit 702, configured to send, to the ue, indication information of the configuration and/or the location of the specific subframe through a signaling of a MAC layer or a physical layer, so that the ue determines an available uplink or downlink resource according to the indication information of the configuration and/or the location of the specific subframe, and sends or receives data on the uplink or downlink resource.

Optionally, the indicating unit 702 in the embodiment of the present invention may include:

a MAC indication module 7021, configured to mark the configuration and/or the position of the specific subframe by a redundant bit or a redundant field of a control element CE in a signaling of the MAC layer or a newly defined control element CE, and send the marked signaling of the MAC layer to the user equipment; further, the MAC indication module 7021 is specifically configured to mark the configuration of the specific subframe and the subframe type pattern in the radio frame by using a redundant bit or a redundant field of a control element CE in a signaling of the MAC layer or a newly defined control element CE, and send the marked signaling of the MAC layer to the ue;

or,

a physical indication module 7022, configured to mark the configuration and/or the location of the specific subframe through a redundant bit or a redundant field in a signaling carried by the PDCCH, or a newly defined field, and send the marked signaling carried by the PDCCH to the user equipment; further, the physical indication module 7022 is specifically configured to mark the configuration of the specific subframe and the subframe type pattern in the radio frame by using a redundant bit or a redundant field in a signaling carried by a physical downlink control channel, or a newly defined field, and send the marked signaling carried by the physical downlink control channel to the user equipment.

Optionally, the indicating unit 701 in the embodiment of the present invention may include:

a specific subframe determining module, configured to determine that a subframe N in the radio frame is a specific subframe if a previous subframe and a subsequent subframe of the subframe N have different subframe types, where N is a subframe index number in the radio frame; the special subframe is also used for determining the position of the available resources in the radio frame.

The specific interactive process of each unit in the base station of the embodiment of the invention is as follows:

the subframe determining unit 701 determines a specific subframe according to different subframe types in a radio frame; the radio frame is a time domain resource for the base station to perform service transmission, and in the prior art, the radio frame may be composed of 10 subframes, or a combination of subframes with a specific length, which may be determined according to a related protocol and standard content, and is not limited herein. The specific subframes are used to provide guard times for switching between different subframe types. In general, if a previous subframe P and a subsequent subframe M of a subframe N have different subframe types, the subframe N may be determined to be a specific subframe. The subframes N, P, and M may be subframes in the same radio frame, or subframes belonging to different radio frames (e.g., two consecutive radio frames, where the subframe types of the subframes in the previous radio frame are all downlink transmission subframes, and the subframe types of the subframes in the next radio frame are all uplink transmission subframes, and at this time, the specific subframe N may be the last subframe of the previous radio frame, or the first subframe of the next radio frame).

In a wireless communication system, a base station allocates transmission resources according to the load states of uplink and downlink services, specifically, the base station allocates carriers for uplink and downlink, and determines subframe types in radio frames for the uplink and downlink (that is, determines subframe types of subframes in the radio frames on each carrier), wherein the subframe types are determined according to the use states of available subframes; the base station may allocate one carrier for the uplink and the downlink, or allocate a pair of carriers for the uplink and the downlink, where the subframe type of the subframe on the carrier may be an uplink transmission subframe or a downlink transmission subframe. It should be noted that, after the ue accesses the network, the base station may obtain carriers allocated to the uplink and the downlink in the communication mode between the ue and the base station, and obtain specific subframes in radio frames of the uplink and the downlink as available subframes, and what transmission direction the available subframes have.

After determining the specific subframe, the indicating unit 702 sends the indication information of the configuration and/or the location of the specific subframe to the user equipment through signaling of the MAC layer or the physical layer, so that the user equipment sends or receives data according to the indication information of the configuration and/or the location of the specific subframe.

Optionally, the MAC indication module 7021 may notify the ue of the configuration and/or position of the specific subframe through a redundant bit or a redundant field in a Control Element (CE) of signaling of the MAC layer or a newly defined control element CE, and further may notify the ue of the positions of an uplink transmission subframe and a downlink transmission subframe in the radio frame, or a subframe type pattern. The control element CE has redundant bits of 7 bits, the MAC indication module 7021 may indicate a subframe type pattern in a radio frame with a bits, and the user equipment may determine the positions of a specific subframe, a downlink transmission subframe, and an uplink transmission subframe according to the subframe type pattern; the base station indicates the specific configuration of a specific subframe with the remaining 7-a bits. And after the marking of the specific subframe is completed, signaling of a MAC layer is sent to the user equipment.

Optionally, the physical indication module 7022 may also notify the ue of the configuration and/or position of the specific subframe through a redundant bit or a redundant field in signaling carried by the PDCCH or a newly defined field, and further, may also notify the ue of the positions of an uplink transmission subframe and a downlink transmission subframe in the radio frame, or a subframe type pattern. The signaling carried by the PDCCH has a redundancy of 4 bits, and the physical indication module 7022 may notify the user equipment of the configuration and/or location of a specific subframe using the 4 reserved bits. Similar to the above signaling of the MAC layer, a bits may be used to mark a subframe type pattern on a radio frame, and the ue may determine the positions of the specific subframe, the downlink transmission subframe, and the uplink transmission subframe according to the pattern, and use the remaining 4-a bits to perform configuration indication of the specific subframe, which is not described herein again.

Referring to fig. 8, a logic structure of an embodiment of the ue according to the present invention for executing the method for indicating based on the specific subframe is described below, where the embodiment of the ue according to the present invention includes:

an indication receiving unit 801, configured to receive, through signaling of a MAC layer or a physical layer, indication information of a configuration and/or a location of a specific subframe sent by a base station, where the specific subframe is used to provide a guard time for switching between different subframe types;

a data transceiver 802, configured to transmit or receive data according to the indication information of the configuration and/or the position of the specific subframe.

Optionally, the indication receiving unit 801 in the embodiment of the present invention may include:

a first obtaining module 8011, configured to receive a signaling of an MAC layer sent by a base station, and extract indication information of configuration and/or position of a specific subframe from a redundant bit or a redundant field of a control element CE in the signaling of the MAC layer or a newly defined control element CE;

or

A second obtaining module 8012, configured to receive a signaling carried by a PDCCH sent by a base station, and extract indication information of configuration and/or position of a specific subframe through a redundant bit or a redundant field in the signaling carried by the PDCCH, or a newly defined field.

The specific interactive process of each unit in the user equipment in the embodiment of the invention is as follows:

the indication receiving unit 801 receives, through signaling of the MAC layer or the physical layer, indication information of configuration and/or location of a specific subframe sent by the base station, where the specific subframe is used to provide a guard time for switching between different subframe types and may also be used to determine the location of available resources within a radio frame. The subframe type may be an uplink transmission subframe, a downlink transmission subframe, a flexible transmission subframe, or an unused subframe.

Specifically, if the signaling for designing the MAC layer is sent by the base station, the first obtaining module 8011 receives the signaling for designing the MAC layer sent by the base station, and obtains the configuration and/or the position of the specific subframe through the redundant bit or the redundant field of the control element CE in the signaling for designing the MAC layer, or through the newly defined control element CE; if the base station sends a signaling for designing the physical layer, the second obtaining module 8012 receives a signaling carried by a PDCCH sent by the base station, and obtains the configuration and/or the position of a specific subframe through a redundant bit or a redundant field in the signaling carried by the PDCCH, or a newly defined field.

After acquiring the indication information of the configuration and/or the position of the specific subframe, the data transceiver unit 802 adjusts the configuration on the corresponding transmission link according to the indication information of the configuration and/or the position of the specific subframe, determines available uplink or downlink resources, and transmits or receives data on the available uplink or downlink resources. Specifically, after acquiring the configuration and/or the position of the specific subframe, the data transceiver unit 802 determines the use of the specific subframe by combining the subframe type included in the radio frame. If the specific subframe is used to provide protection time for switching between different subframe types, the data transceiver 802 sets the protection time required for changing the transmission direction in the transmission link according to the configuration of the specific subframe, so as to avoid the transmit-receive interference between two transmission directions on the same transmission link. If the specific subframe is used to determine the location of the available resource in the radio frame, the data transceiver unit 802 determines the specific time when the service transmission is stopped according to the location of the specific subframe.

Referring to fig. 8, a logic structure of an embodiment of a wireless communication system according to the present invention for performing the method for indicating based on the specific subframe is described as follows, wherein the embodiment of the wireless communication system according to the present invention includes:

a base station 901 and a user equipment 902;

a base station 901, configured to determine a specific subframe according to different subframe types in a radio frame, where the radio frame is a segment of time domain resource for performing service transmission by the base station 901, and the specific subframe is used to provide protection time for switching between different subframe types; sending indication information of configuration and/or position of a specific subframe to the user equipment 902 through signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment 902 sends or receives data according to the indication information of the configuration and/or position of the specific subframe;

the ue 902 is configured to acquire the indication information of the configuration and/or the location of the specific subframe by receiving the signaling of the MAC layer or the physical layer sent by the base station, and send or receive data according to the indication information of the configuration and/or the location of the specific subframe.

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

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

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

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

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

Claims

1. An indication method based on specific subframe is applied to Frequency Division Duplex (FDD) system, and comprises the following steps:

the base station determines a specific subframe according to different subframe types in a wireless frame, wherein the wireless frame is a section of time domain resource for the base station to perform service transmission, and the specific subframe is used for providing protection time for conversion between different subframe types;

the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through a signaling of a Media Access Control (MAC) layer or a physical layer, so that the user equipment determines available uplink or downlink resources according to the indication information of the configuration and/or the position of the specific subframe and sends or receives data on the uplink or downlink resources;

wherein, the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of the MAC layer or the physical layer, and the indication information comprises:

the base station marks the configuration and/or the position of the specific subframe through a redundant bit or a redundant field of a control element CE in the signaling of the MAC layer or a newly defined control element CE, and sends the marked signaling of the MAC layer to the user equipment;

or,

the base station marks the configuration and/or position of the specific subframe through redundant bits or redundant fields or newly defined fields in the signaling carried by the physical downlink control channel, and sends the marked signaling carried by the physical downlink control channel to the user equipment;

wherein, the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of the MAC layer or the physical layer, and further comprises:

the base station marks the configuration of the specific subframe and the subframe type pattern in the radio frame through the redundant bit or the redundant field of the control element CE in the signaling of the MAC layer or the newly defined control element CE, and sends the marked signaling of the MAC layer to the user equipment;

or,

and the base station marks the configuration of the specific subframe and the subframe type pattern in the radio frame through redundant bits or redundant fields or newly defined fields in the signaling carried by the physical downlink control channel, and sends the marked signaling carried by the physical downlink control channel to the user equipment.

2. The method of claim 1, wherein the subframe type comprises: uplink transmission subframes, downlink transmission subframes, flexible transmission subframes, and unused subframes.

3. The method of claim 1, wherein the specific subframe is further used to determine a location of available resources within the radio frame.

4. The method according to any of claims 1 to 3, wherein the base station determines the specific subframe according to different subframe types in the radio frame, comprising:

the base station determines the subframe type of each subframe in the wireless frame;

if the former subframe and the latter subframe of the subframe N in the wireless frame have different subframe types, determining the subframe N as a specific subframe, wherein N is the subframe index number in the wireless frame.

5. The method according to claim 1, wherein the redundant bits or redundant fields of the control element CE in the signaling of the MAC layer specifically include: redundant bits or fields of control elements CE for carrier activation or deactivation in signaling of the MAC layer.

6. The method according to claim 1, wherein the signaling carried by the physical downlink control channel specifically includes: scheduling paging information, or system information, or signaling carried by a physical downlink control channel of a random access response.

7. An indication method based on specific subframe is applied to Frequency Division Duplex (FDD) system, and comprises the following steps:

the method comprises the steps that user equipment obtains indication information of configuration and/or position of a specific subframe by receiving signaling of an MAC layer or a physical layer sent by a base station, wherein the specific subframe is used for providing protection time for conversion among different subframe types;

the user equipment determines available uplink or downlink resources according to the configuration of the specific subframe and/or the indication information of the position, and transmits or receives data on the uplink or downlink resources;

the method for acquiring the configuration and/or the position indication information of the specific subframe by the user equipment through receiving the signaling of the MAC layer or the physical layer sent by the base station includes the following steps:

the user equipment receives a signaling of an MAC layer sent by a base station, and acquires the configuration and/or position indication information of the specific subframe through a redundant bit or a redundant field of a Control Element (CE) in the signaling of the MAC layer or a newly defined Control Element (CE);

or,

and the user equipment receives a signaling carried by a physical downlink control channel sent by the base station, and acquires the configuration and/or position indication information of the specific subframe through redundant bits or redundant fields or newly defined fields in the signaling carried by the physical downlink control channel.

8. The method of claim 7, wherein the specific subframe is further used to indicate a location of an available resource in a radio frame, wherein the specific subframe is determined by the base station according to different subframe types in the radio frame, and wherein the radio frame is a time domain resource for traffic transmission by the base station.

9. The method according to any of claims 7 to 8, wherein the subframe type comprises: uplink transmission subframes, downlink transmission subframes, flexible transmission subframes, and unused subframes.

10. A base station, for use in a frequency division duplex, FDD, system, comprising:

the subframe determining unit is used for determining a specific subframe according to different subframe types in a radio frame, wherein the radio frame is a section of time domain resource for carrying out service transmission by a base station, and the specific subframe is used for providing protection time for conversion among different subframe types;

an indication unit, configured to send, to a user equipment through a signaling of a media access control MAC layer or a physical layer, indication information of a configuration and/or a position of the specific subframe, so that the user equipment determines an available uplink or downlink resource according to the indication information of the configuration and/or the position of the specific subframe, and sends or receives data on the uplink or downlink resource;

wherein the indication unit includes:

the MAC indicating module is used for marking the configuration and/or the position of the specific subframe through a redundant bit or a redundant field of a control element CE in signaling of an MAC layer or a newly defined control element CE, and sending the marked signaling of the MAC layer to user equipment;

or,

a physical indication module, configured to mark the configuration and/or location of the specific subframe through a redundant bit or a redundant field in a signaling carried by a physical downlink control channel, or a newly defined field, and send the marked signaling carried by the physical downlink control channel to the user equipment;

wherein,

the MAC indication module is further specifically configured to mark the configuration of the specific subframe and a subframe type pattern in the radio frame by using a redundant bit or a redundant field of a control element CE in a signaling of the MAC layer or a newly defined control element CE, and send the marked signaling of the MAC layer to the user equipment;

11. The base station of claim 10, wherein the subframe determining unit comprises:

12. A user equipment, applied in a frequency division duplex, FDD, system, comprising:

an indication receiving unit, configured to obtain indication information of configuration and/or location of a specific subframe by receiving signaling of an MAC layer or a physical layer sent by a base station, where the specific subframe is used to provide protection time for switching between different subframe types;

a data transceiver unit, configured to determine an available uplink or downlink resource according to the configuration and/or location indication information of the specific subframe, and transmit or receive data on the uplink or downlink resource;

wherein the indication receiving unit includes:

a first obtaining module, configured to receive a signaling of an MAC layer sent by a base station, and obtain indication information of a configuration and/or a position of the specific subframe through a redundant bit or a redundant field of a control element CE in the signaling of the MAC layer or a newly defined control element CE;

or,

a second obtaining module, configured to receive a signaling carried by a physical downlink control channel and sent by a base station, and obtain, through a redundant bit or a redundant field in the signaling carried by the physical downlink control channel or a newly defined field, indication information of the configuration and/or the position of the specific subframe.

13. A wireless communication system, in particular a frequency division duplex, FDD, system, comprising: a base station and a user equipment;

the user equipment is used for acquiring the indication information of the configuration and/or the position of a specific subframe by receiving the signaling of an MAC layer or a physical layer sent by a base station, determining available uplink or downlink resources according to the indication information of the configuration and/or the position of the specific subframe, and sending or receiving data on the uplink or downlink resources;

wherein the base station sends the indication information of the configuration and/or the position of the specific subframe to the user equipment through the signaling of the MAC layer or the physical layer, and the indication information comprises:

or,

the base station marks the configuration of the specific subframe and the subframe type pattern in the radio frame through a redundant bit or a redundant field or a newly defined field in the signaling carried by the physical downlink control channel, and sends the marked signaling carried by the physical downlink control channel to the user equipment;

or,