CN104184569A

CN104184569A - Method and device for processing flexible subframe

Info

Publication number: CN104184569A
Application number: CN201310201745.XA
Authority: CN
Inventors: 杨维维; 喻斌; 郝鹏
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-05-27
Filing date: 2013-05-27
Publication date: 2014-12-03
Also published as: WO2014190792A1

Abstract

The invention provides a method and device for processing a flexible subframe. The method includes: indicating the subframe attribute of a flexible subframe through a PCFICH in a DwPTS, wherein the subframe attribute includes uplink or downlink; and communicating in the flexible subframe according to the subframe attribute. Through the method for processing the flexible subframe in the invention, the problem in related technology that the uplink and downlink proportion of subframes cannot be dynamically changed is solved, thereby improving efficiency of data transmission.

Description

Flexible subframe processing method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing a flexible subframe.

Background

A frame structure (also referred to as a second type frame structure, frame structure type 2) of a TDD (Time Division Duplex) mode of a Long Term Evolution (Long Term Evolution, LTE) system is shown in fig. 1. In this frame structure, a 10ms (307200 Ts, 1ms =30720 Ts) radio frame is divided into two half-frames, each 5ms long (153600 Ts). Each field contains 5 subframes of length 1 ms. The role of each subframe is shown in table 1, where D represents a downlink subframe for transmitting a downlink signal. U represents an uplink subframe for transmitting an uplink signal. One uplink or downlink subframe is divided into 2 slots of 0.5 ms. S represents a special subframe, and includes three special Time slots, namely DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS (Uplink Pilot Time Slot), where at most 2 OFDM symbols occupied by DwPTS. In an actual system, the uplink and downlink configuration indexes are notified to the mobile phone through broadcast messages.

TABLE 1 Up-and Down-run formulation

A Physical Control Format Indicator Channel (PCFICH) can carry 2 bits of information, and is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting a Physical Downlink Control Channel (PDCCH), wherein a Control Format Indicator (CFI) indicating the number of OFDM symbols is encoded and mapped to the PCFICH for transmission, and the encoding method is as shown in the following table:

in a general subframe, the number of OFDM symbols used for transmitting a physical Downlink control channel is 1, 2, and 3, and 2 bits of information are needed for representation, and in a Downlink Pilot Time Slot (DwPTS), the number of OFDM symbols used for transmitting a PDCCH is 1 and 2, and only 1 bit of information is needed for representation, so that the PCFICH in the DwPTS can carry 1 bit of other information;

with the increase of the application and data service types, the semi-static change of the uplink and downlink proportion of the TDD system cannot meet the requirement of dynamic change of the uplink and downlink traffic. How to further increase the adjustment speed of the uplink and downlink proportion and better satisfy the requirement of dynamic change of uplink and downlink traffic becomes a problem to be solved urgently! On the other hand, the old LTE terminal does not support dynamic change of subframe attributes (uplink or downlink), and at the same time, conversion and protection time are required between uplink and downlink subframes, and any change of subframe attributes requires a large amount of protection time overhead, thereby reducing the use efficiency of resources. Therefore, how to better accommodate the terminal device of the old version reduces the conversion time required by the uplink and downlink conversion and the waste caused by the guard interval, improves the use efficiency of the resource, and is also a factor to be considered in the flexible subframe allocation design. The LTE of the subsequent release supports dynamic change of the uplink and downlink proportion of the TDD system, but no specific implementation is given, so that dynamic change of the uplink and downlink proportion of the TDD system cannot be realized.

Aiming at the problem that the data transmission efficiency is low due to the fact that the uplink and downlink proportion of the subframe can not be dynamically changed in the related technology, an effective solution is not provided at present.

Disclosure of Invention

The invention provides a method and a device for processing a flexible subframe, which are used for at least solving the problems.

According to an aspect of the present invention, there is provided a method for processing a flexible subframe, including: indicating subframe attributes of a flexible subframe through a Physical Control Format Indicator Channel (PCFICH) in a downlink pilot time slot (DwPTS), wherein the subframe attributes include: ascending or descending; communicating on the flexible subframes according to the subframe attributes.

Preferably, the indicating the subframe attribute of the flexible subframe by the PCFICH in the DwPTS includes:

indicating the subframe attribute of the flexible subframe through first preset bit information in bit information which can be carried by the PCFICH; or,

the subframe attribute of a flexible subframe in a wireless frame where the DwPTS is located is indicated through second preset bit information carried by the PCFICH; or,

and indicating the subframe attribute of the flexible subframe in the half frame of the DwPTS through third preset bit information carried by the PCFICH.

Preferably, the indicating, by the information of the preset bits carried by the PCFICH, the subframe attribute of the flexible subframe includes:

jointly indicating the subframe attribute of a flexible subframe in a first radio frame through fourth preset bit information carried by the PCFICH in a second radio frame, wherein the second radio frame is adjacent to the first radio frame in a time domain and is positioned before the first radio frame in the time domain.

Preferably, the flexible subframe refers to one of: one or more subframes configurable in a radio frame for transmission of one of: uplink signals, downlink signals and no signals are transmitted; subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers of 3, 4, 7, 8, 9 in the radio frame.

Preferably, the first preset bit information, the second preset bit information, and the third preset bit information on the PCFICH in the DwPTS are all bit information that is not used to indicate the number of PDCCH symbols in the subframe where the DwPTS is located.

According to another aspect of the present invention, there is provided a flexible subframe processing apparatus, including: a first indication module, configured to indicate a subframe attribute of a flexible subframe through a physical control format indicator channel PCFICH in a downlink pilot timeslot DwPTS, where the subframe attribute includes: ascending or descending; a transmission module, configured to communicate on the flexible subframe according to the subframe attribute.

Preferably, the first indication module comprises one of the following modules:

a second indicating module, configured to indicate a subframe attribute of the flexible subframe through a first preset bit in bit information that can be carried by the PCFICH;

a third indicating module, configured to indicate, through second preset bit information carried by the PCFICH, a subframe attribute of a flexible subframe in a radio frame where the DwPTS is located;

and a fourth indicating module, configured to indicate, through third preset bit information carried by the PCFICH, a subframe attribute of a flexible subframe in a half frame where the DwPTS is located.

Preferably, the second indication module includes:

a fifth indicating module, configured to jointly indicate a subframe attribute of a flexible subframe in the first radio frame through fourth preset bit information carried in the PCFICH in a second radio frame, where the second radio frame is a radio frame that is adjacent to the first radio frame in a time domain and is located before the first radio frame in the time domain.

According to the invention, the PCFICH in the DwPTS is adopted to indicate the subframe attribute of the flexible subframe, wherein the subframe attribute comprises the following steps: ascending or descending; and the communication is carried out on the flexible subframe according to the subframe attribute, so that the problem of low data transmission efficiency caused by incapability of dynamically changing the uplink and downlink proportion of the subframe is solved, and the effect of improving the data transmission efficiency is further achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a diagram of a second type frame structure of an LTE system according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method of processing flexible subframes according to an embodiment of the invention;

fig. 3 is a block diagram of a flexible subframe processing apparatus according to an embodiment of the present invention;

FIG. 4 is a block diagram of a preferred structure of a flexible subframe processing apparatus according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a flexible subframe setting according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating a flexible subframe setting according to an embodiment of the present invention;

fig. 7 is a diagram of a flexible subframe setting according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 2 is a flowchart of a method for processing a flexible subframe according to an embodiment of the present invention, and as shown in fig. 2, the method mainly includes the following steps (step S202-step S204).

Step S202, the physical control format indicator channel PCFICH in the downlink pilot time slot DwPTS indicates the subframe attribute of the flexible subframe, wherein the subframe attribute comprises: up or down.

Step S204, communication is carried out on the flexible subframes according to the subframe attributes.

The method comprises the steps of indicating the subframe attribute of the flexible subframe through a physical control format indicator channel PCFICH in the DwPTS, and then communicating on the flexible subframe according to the subframe attribute, so that the problem of low data transmission efficiency caused by incapability of dynamically changing the uplink and downlink proportion of the subframe in the related technology is solved, and the effect of improving the data transmission efficiency is achieved.

the subframe attribute of the flexible subframe is indicated through first preset bit information in bit information which can be carried by the PCFICH; or,

Preferably, the indicating, by the first preset bit information in the bit information that can be carried by the PCFICH, the subframe attribute of the flexible subframe includes:

and jointly indicating the attribute of the subframe of the flexible subframe in the first radio frame through preset bit information carried by a PCFICH in a second radio frame, wherein the second radio frame is a radio frame which is adjacent to the first radio frame in the time domain and is positioned before the first radio frame in the time domain.

Preferably, the flexible subframe refers to one of: one or more subframes configurable in a radio frame for transmission of one of: uplink signals, downlink signals and no signals are transmitted; subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in a radio frame.

Preferably, the first preset bit information, the second preset bit information, and the third preset bit information on the PCFICH in the DwPTS are all bit information that is not used to indicate the number of Physical Downlink Control Channel (PDCCH) symbols of the subframe in which the DwPTS is located.

Fig. 3 is a block diagram of a flexible subframe processing apparatus according to an embodiment of the present invention, which is used to implement the flexible subframe processing method provided in the foregoing embodiment, and as shown in fig. 3, the apparatus mainly includes: a first indication module 32 and a transmission module 34.

A first indicating module 32, configured to indicate a subframe attribute of a flexible subframe through a Physical Control Format Indicator Channel (PCFICH) in a downlink pilot timeslot (DwPTS), where the subframe attribute includes: ascending or descending; a transmission module 34 configured to communicate on the flexible subframes according to the subframe attributes.

Fig. 4 is a block diagram of a preferred structure of a flexible subframe processing apparatus according to an embodiment of the present invention, and as shown in fig. 4, the first indication module 32 includes one of the following modules: the second indication module 322, the third indication module 324, the fourth indication module 326, the second indication module 322 comprising: the fifth indicating module 3222, the above structure of which is described in detail below.

A second indicating module 322, configured to indicate a subframe attribute of the flexible subframe through a first preset bit in bit information that can be carried by the PCFICH; a third indicating module 324, configured to indicate, through second preset bit information carried by the PCFICH, a subframe attribute of a flexible subframe in a radio frame where the DwPTS is located; a fourth indicating module 326, configured to indicate, through third preset bit information carried by the PCFICH, a subframe attribute of a flexible subframe in a half frame where the DwPTS is located.

Preferably, the second indication module 322 includes: a fifth indicating module 3222, configured to jointly indicate, through preset bit information carried in a PCFICH in a second radio frame, an attribute of a subframe of a flexible subframe in the first radio frame, where the second radio frame is a radio frame adjacent to the first radio frame in the time domain and located before the first radio frame in the time domain.

According to the invention, the PCFICH in the DwPTS is adopted to indicate the subframe attribute of the flexible subframe, wherein the subframe attribute comprises the following steps: ascending or descending; and communication is carried out on the flexible subframe according to the subframe attribute, so that the problem of low data transmission efficiency caused by incapability of dynamically changing the uplink and downlink proportion of the subframe is solved, and the effect of improving the data transmission efficiency is further achieved.

The following detailed description is given by way of preferred embodiments.

Preferred embodiment 1

The preferred embodiment provides a subframe attribute indication method for a flexible subframe to realize dynamic adjustment of uplink and downlink proportion, which comprises the following steps: and the PCFICH in the DwPTS indicates the subframe attribute of the flexible subframe, so that the uplink and downlink proportion of the TDD system can be dynamically changed.

Preferably, the indicating the subframe attribute of the flexible subframe by the PCFICH in the DwPTS includes: and the preset bit information carried by the PCFICH represents the subframe attribute of the flexible subframe.

Preferably, the indication of the subframe attribute of the flexible subframe by the preset bit information carried by the PCFICH means: and the preset bit information carried by the PCFICH represents the subframe attribute of the flexible subframe in the half frame where the DwPTS is positioned.

Preferably, the indication of the subframe attribute of the flexible subframe by the preset bit information carried by the PCFICH means: and the preset bit information carried by the PCFICH represents the subframe attribute of the flexible subframe in the subframe where the DwPTS is located.

Preferably, the indication of the subframe attribute of the flexible subframe by the preset bit information carried by the PCFICH means that the preset bit information carried by the PCFICH in the previous radio frame is combined to indicate the subframe attribute of the flexible subframe in the current radio frame;

preferably, the 1-bit information carried by the PCFICH further indicates the number of OFDM symbols corresponding to the PDCCH in the DwPTS.

Preferably, the flexible subframe refers to: in a radio frame, uplink signals (flexible subframes are changed into uplink subframes) and downlink signals (flexible subframes are changed into downlink subframes) can be transmitted or one or more subframes which do not transmit any signals are transmitted; or, supporting a subframe in which a transmission direction is changed at a time interval less than 640 ms; or, one or more of subframes with subframe numbers 3, 4, 7, 8, 9 in the radio frame.

In the preferred embodiment, the uplink and downlink configuration may also be obtained through preset bit information carried by the PCFICH, and the subframe attribute of the flexible subframe is obtained according to the uplink and downlink configuration.

The flexible subframe attribute indication method provided by the preferred embodiment can realize dynamic change of the uplink and downlink proportion of the TDD system, thereby better meeting the requirement of dynamic change of uplink and downlink traffic.

Preferred embodiment two

In the preferred embodiment, a flexible subframe processing method is provided (as shown in fig. 5).

Suppose that subframes 0 and 5 are fixed downlink subframes (denoted by 'D' in the figure) in a radio frame a; subframes 2, 3, 7, and 8 are fixed uplink subframes (denoted by 'U' in the figure); subframes 1 and 6 are special subframes (denoted by 'S' in the figure), including DwPTS, GT, UpPTS; subframes 4 and 9 are flexible subframes (denoted by 'F' in the figure).

The first embodiment is as follows:

the subframe attribute of the flexible subframe 4 is represented by 1-bit information carried by the PCFICH of the DwPTS in the subframe 1; the subframe attribute of the flexible subframe 9 is indicated by 1-bit information carried by the PCFICH of the DwPTS in the subframe 6;

for example, one bit in the PCFICH of the DwPTS in subframe 1 is used to indicate the number of symbols used for transmitting the PDCCH in subframe 1DwPTS, and the second bit is used to indicate the subframe attribute of the flexible subframe 4, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '00', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframe 4 is uplink;

when the bit corresponding to the PCFICH of the subframe 1DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframe 4 is downlink;

when the bit corresponding to the PCFICH of the subframe 1DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframe 4 is uplink;

when the bit corresponding to the PCFICH of the subframe 1DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframe 4 is downlink;

or,

when the code word transmitted by the PCFICH of the subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframe 4 is uplink;

when the code word transmitted by the PCFICH of the subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 1>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframe 4 is downlink;

when the code word transmitted by the PCFICH of the subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 1,0>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframe 4 is uplink;

when the code word transmitted by the PCFICH of the subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1, 0>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframe 4 is downlink;

for example, one bit in the PCFICH of the DwPTS in subframe 6 is used to indicate the number of symbols used for PDCCH transmission in the DwPTS in subframe 6, and the second bit is used to indicate the subframe attribute of the flexible subframe 9, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '00', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attribute of the flexible subframe 9 is uplink;

when the bit corresponding to the PCFICH of the subframe 6DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attribute of the flexible subframe 9 is downlink;

when the bit corresponding to the PCFICH of the subframe 6DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attribute of the flexible subframe 9 is uplink;

when the bit corresponding to the PCFICH of the subframe 6DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attribute of the flexible subframe 9 is downlink;

or,

when the code word transmitted by the PCFICH of the subframe 6DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attribute of the flexible subframe 9 is uplink;

when the code word transmitted by the PCFICH of the subframe 6DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 1>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attribute of the flexible subframe 9 is downlink;

when the code word transmitted by the PCFICH of the subframe 6DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 1,0,1,1,0>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attribute of the flexible subframe 9 is uplink;

when the code word transmitted by the PCFICH of the subframe 6DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1, 0>, it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attribute of the flexible subframe 9 is downlink.

Example two:

the subframe attributes of flexible subframes 4, 9 are represented by 1-bit information carried by the PCFICH of DwPTS in subframe 1.

For example, one bit in the PCFICH of the DwPTS in subframe 1 is used to indicate the number of symbols used for transmitting the PDCCH in subframe 1DwPTS, and the second bit is used to indicate the subframe attributes of flexible subframes 4 and 9, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '00', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframes 4 and 9 is uplink.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attribute of the flexible subframes 4 and 9 is downlink.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframes 4 and 9 is uplink.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframes 4 and 9 is downlink.

Or,

when the code word transmitted by the PCFICH of subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1>, it indicates that the number of OFDM symbols used for transmitting PDCCH in subframe 1 is 1, and the subframe attribute of flexible subframes 4 and 9 is uplink.

When the code word transmitted by the PCFICH of subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 1>, it indicates that the number of OFDM symbols used for transmitting PDCCH in subframe 1 is 1, and the subframe attribute of flexible subframes 4 and 9 is downlink.

When the code word transmitted by the PCFICH of subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 1,0,1,1,0,1,1, 1,0>, it indicates that the number of OFDM symbols used for transmitting PDCCH in subframe 1 is 2, and the subframe attribute of flexible subframes 4 and 9 is uplink.

When the code word transmitted by the PCFICH of subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1, 0>, it indicates that the number of OFDM symbols used for transmitting PDCCH in subframe 1 is 2, and the subframe attribute of flexible subframes 4 and 9 is downlink.

EXAMPLE III

The subframe attributes of flexible subframe 4 and flexible subframe 9 in radio frame a +1 are jointly represented by 1-bit information carried by the PCFICH of DwPTS in subframe 1 and 1-bit information carried by the PCFICH of DwPTS in subframe 6 in radio frame a.

Using one bit in the PCFICH of the DwPTS in the subframe 1 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the DwPTS of the subframe 1 of the radio frame A, and using the first bit in the PCFICH of the DwPTS in the subframe 6 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the subframe 6 of the radio frame A; for example, the two bits in the PCFICH of the DwPTS in the radio frame a subframe 1 and the second bit in the PCFICH of the DwPTS in the radio frame a subframe 6 indicate the subframe attributes of the flexible subframe 4 and the flexible subframe 9 in the radio frame a +1, and obviously, the corresponding relationships may be interchanged.

When the first bit in the PCFICH of radio frame a subframe 1DwPTS is '0', it indicates that the number of symbols used for transmitting PDCCH in radio frame a subframe 1DwPTS is 1.

When the first bit in the PCFICH of radio frame a, subframe 1DwPTS is '1', it indicates that the number of symbols used for transmitting PDCCH in radio frame a, subframe 1DwPTS is 2.

When the first bit in the PCFICH of radio frame a subframe 6DwPTS is '0', it indicates that the number of symbols used for transmitting PDCCH in radio frame a subframe 6DwPTS is 1.

When the first bit in PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the number of symbols used for transmission of PDCCH in radio frame a, subframe 1DwPTS is 2.

When the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframe 4 and flexible subframe 9 in radio frame a +1 are both uplink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 4 in the radio frame a +1 is uplink and the subframe attribute of the flexible subframe 9 is downlink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 4 in the radio frame a +1 is downlink, and the subframe attribute of the flexible subframe 9 is uplink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 4 in the radio frame a +1 is downlink, and the subframe attribute of the flexible subframe 9 is downlink;

or,

when the code word of PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1> and the code word of PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, and the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes are both uplink subframes.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 1,0,1> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0, 1> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, the attribute of flexible subframe a +1 is an uplink subframe, and the attribute of flexible subframe 9 is a downlink subframe.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0, 1> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0, 1> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the attribute of flexible subframe a is a downlink subframe 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 1> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,0,0,1,0,0,1,0,0, 1> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes in a +1 and flexible subframes are both flexible subframes.

When the code word of PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 0> and the code word of PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,1,1,0,1,1, 1,0>, indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 2, and the flexible subframes in a +1 and flexible subframes are both uplink subframes.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 0> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,0,1,0,0,1,0,0,1, 0> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 2, the attribute of flexible subframe a +1 is the attribute of uplink subframe 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 0,1,1,0, 0,1,0> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,1,1,0,1,1, 1,0> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 2DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, the attribute of flexible subframe a +1 is the attribute of flexible subframe 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 0,1,0> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1, 0> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes in a +1 and a + 9 are both flexible subframes.

Example four

Representing the uplink and downlink configuration of the wireless frame A through 1-bit information carried by the PCFICH of the DwPTS in the subframe 1 of the wireless frame A, and obtaining the subframe attributes of the flexible subframes 4 and 9 according to the uplink and downlink configuration; wherein the uplink and downlink configuration is not limited to the 7 configurations defined in the existing standard.

One bit of the PCFICH of the DwPTS in the subframe 1 of the radio frame A is used for representing the number of symbols used for transmitting the PDCCH in the DwPTS of the subframe 1 of the radio frame A, the second bit of the PCFICH of the DwPTS in the subframe 1 of the radio frame A is used for representing the uplink and downlink configuration of the radio frame A, and the subframe attributes of the flexible subframe 4 and the flexible subframe 9 are obtained according to the uplink and downlink configuration.

EXAMPLE five

The uplink and downlink configuration of a wireless frame A +1 is jointly represented by 1 bit of information carried by the PCFICH of the DwPTS in the subframe 1 and 1 bit of information carried by the PCFICH of the DwPTS in the subframe 6 in the wireless frame A, and the subframe attributes of a flexible subframe 4 and a flexible subframe 9 in the wireless frame A +1 are obtained according to the uplink and downlink configuration; wherein the uplink and downlink configuration is not limited to the 7 configurations defined in the existing standard.

Using one bit in the PCFICH of the DwPTS in the subframe 1 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the DwPTS of the subframe 1 of the radio frame A, and using the first bit in the PCFICH of the DwPTS in the subframe 6 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the subframe 6 of the radio frame A; and combining two bits in the PCFICH of the DwPTS in the wireless frame A subframe 1 with the second bit in the PCFICH of the DwPTS in the wireless frame A subframe 6 to represent the uplink and downlink configuration of the wireless frame A +1, and obtaining the subframe attributes of the flexible subframe 4 and the flexible subframe 9 according to the uplink and downlink configuration.

Preferred embodiment three (as shown in FIG. 6)

Assuming that subframes 0 and 5 are fixed downlink subframes in a radio frame; subframes 2 and 7 are fixed uplink subframes; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 8, 9 are flexible subframes.

The first embodiment is as follows:

the subframe attributes of the flexible subframes 3 and 4 are represented by 1-bit information carried by the PCFICH of the DwPTS in the subframe 1; the subframe attributes of flexible subframes 8, 9 are indicated by 1-bit information carried by the PCFICH of DwPTS in subframe 6.

For example, one bit in the PCFICH of the DwPTS in subframe 1 is used to indicate the number of symbols used for transmitting the PDCCH in subframe 1DwPTS, and the second bit is used to indicate the subframe attributes of flexible subframes 3 and 4, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '00', the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attributes of the flexible subframes 3 and 4 are both uplink;

when the bit corresponding to the PCFICH of the subframe 1DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attributes of the flexible subframes 3 and 4 are both downlink.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframes 3 and 4 is uplink.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 2, and the subframe attribute of the flexible subframes 3 and 4 is downlink.

For example, one bit in the PCFICH of the DwPTS in subframe 6 is used to indicate the number of symbols used for PDCCH transmission in subframe 6DwPTS, and the second bit is used to indicate the subframe attributes of flexible subframes 8 and 9, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '00', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attributes of the flexible subframes 8 and 9 are both uplink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, and the subframe attributes of the flexible subframes 8 and 9 are both downlink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attributes of the flexible subframes 8 and 9 are both uplink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, and the subframe attributes of the flexible subframes 8 and 9 are both downlink.

Or,

when the code word of PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0, 1> and the code word of PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 1> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes are both uplink subframes 8, 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0, 0,0,1,0,0,1,0,0,1,0,0,1> and indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframe for uplink transmission is 1, the flexible subframe for uplink is 8, and the flexible subframe for downlink is 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0, 1> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,1,0,1,1,0,1,1,0,1,1,0, 1> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the attribute of flexible subframe a 3, 4 is a downlink subframe 9, a flexible subframe.

When the code word of PCFICH transmission of radio frame a subframe 1DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0, 0,1,0,0,1,0,0,1,0,0,1> and the code word of PCFICH transmission of radio frame a subframe 6DwPTS is <0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 1> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes are flexible subframes 8, 9 in a + 1.

When the code word of the PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1, 0> and the code word of the PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,1,1,0,1,1, 1,0> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 2, and the flexible subframes 3, 4 and 9 are flexible subframes each of uplink subframe.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1,0,1,1, 0> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,0,1,0,0,1, 0> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 2, and the flexible subframe 3, 4 in a +1 is an uplink subframe 8, a downlink subframe 9.

When the code word for PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 0,1,1,0, 0,1,0> and the code word for PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,1,1,0,1,1, 1,0> indicates that the number of symbols used for PDCCH transmission in radio frame a subframe 2DwPTS is 2, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframe 3, 4 in a +1 is an uplink subframe 8, a flexible subframe 9.

When the code word of PCFICH transmission of radio frame a subframe 1DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0,1,0,0, 0,1,0> and the code word of PCFICH transmission of radio frame a subframe 6DwPTS is <1,0,0,1,0,0,1,0,0,1,0,0,1, 0> indicating that the number of symbols used for PDCCH transmission in radio frame a subframe 1DwPTS is 1, the number of symbols used for PDCCH transmission in radio frame a subframe 6DwPTS is 1, and the flexible subframes are flexible subframes 8, 9 in a + 1.

Example two

The subframe attributes of flexible subframes 3 and 4 and flexible subframes 8 and 9 in a radio frame A +1 are jointly represented by 1-bit information carried by the PCFICH of the DwPTS in a subframe 1 and 1-bit information carried by the PCFICH of the DwPTS in a subframe 6 in the radio frame A.

Using one bit in the PCFICH of the DwPTS in the subframe 1 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the DwPTS of the subframe 1 of the radio frame A, and using the first bit in the PCFICH of the DwPTS in the subframe 6 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the subframe 6 of the radio frame A; for example, the two bits in the PCFICH of the DwPTS in the radio frame a subframe 1 and the second bit in the PCFICH of the DwPTS in the radio frame a subframe 6 indicate the subframe attributes of the flexible subframes 3 and 4 and the flexible subframes 8 and 9 in the radio frame a +1, and obviously, the corresponding relationships may be interchanged.

When the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 8, 9 in radio frame a +1 are both uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 8, and 9 are downlink.

Or,

when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 8, 9 in radio frame a +1 are both uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attributes of the flexible subframes 3, 4, 8, 9 in radio frame a +1 are all downlink.

Or,

when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 8, 9 in radio frame a +1 are both uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 8, and 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attributes of the flexible subframes 3, 4, 8, 9 in radio frame a +1 are all downlink.

Or,

when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 8, 9 in radio frame a +1 are both uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 8, and 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attributes of the flexible subframes 3, 4, 8, 9 in radio frame a +1 are all downlink.

Or,

when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 8, 9 in radio frame a +1 are both downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 8, and 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attributes of the flexible subframes 3, 4, and 8 in the radio frame a +1 are uplink, and the subframe attributes of the flexible subframe 9 are downlink.

Preferred embodiment four (as shown in FIG. 7)

Assuming that subframes 0 and 5 are fixed downlink subframes in a radio frame; subframe 2 is a fixed uplink subframe; subframes 1 and 6 are special subframes, including DwPTS, GT and UpPTS; subframes 3, 4, 7, 8, 9 are flexible subframes.

Example one

The subframe attributes of the flexible subframes 3 and 4 are represented by 1-bit information carried by the PCFICH of the DwPTS in the subframe 1; the subframe attributes of flexible subframes 7, 8, 9 are indicated by 1-bit information carried by the PCFICH of DwPTS in subframe 6.

When the bit corresponding to the PCFICH of the subframe 1DwPTS is '00', the number of OFDM symbols used for transmitting the PDCCH in the subframe 1 is 1, and the subframe attributes of the flexible subframes 3 and 4 are both uplink.

For example, one bit in the PCFICH of the DwPTS in subframe 6 is used to indicate the number of symbols used for transmitting the PDCCH in subframe 6DwPTS, and the second bit is used to indicate the subframe attributes of flexible subframes 7, 8, and 9, it is obvious that the corresponding relationships may be interchanged.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '00', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, the subframe attribute of the flexible subframes 7 and 8 is uplink, and the subframe attribute of the flexible subframe 9 is downlink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '01', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 1, the subframe attribute of the flexible subframes 7 and 8 is downlink, and the subframe attribute of the flexible subframe 9 is uplink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '10', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, the subframe attribute of the flexible subframes 7 and 8 is uplink, and the subframe attribute of the flexible subframe 9 is downlink.

When the bit corresponding to the PCFICH of the subframe 6DwPTS is '11', it indicates that the number of OFDM symbols used for transmitting the PDCCH in the subframe 6 is 2, the subframe attribute of the flexible subframes 7 and 8 is downlink, and the subframe attribute of the flexible subframe 9 is uplink.

Example two

The subframe attributes of flexible subframes 3 and 4 and flexible subframes 7, 8 and 9 in a radio frame A +1 are jointly represented by 1-bit information carried by the PCFICH of the DwPTS in a subframe 1 and 1-bit information carried by the PCFICH of the DwPTS in a subframe 6 in the radio frame A.

Using one bit in the PCFICH of the DwPTS in the subframe 1 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the DwPTS of the subframe 1 of the radio frame A, and using the first bit in the PCFICH of the DwPTS in the subframe 6 of the radio frame A to represent the number of symbols used for transmitting the PDCCH in the subframe 6 of the radio frame A; for example, the two bits in the PCFICH of the DwPTS in the radio frame a subframe 1 and the second bit in the PCFICH of the DwPTS in the radio frame a subframe 6 indicate the subframe attributes of the flexible subframes 3 and 4 and the flexible subframes 7, 8, and 9 in the radio frame a +1, and obviously, the corresponding relationships may be interchanged.

When the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '0' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '0', it indicates that the subframe attributes of flexible subframes 3, 4 and flexible subframes 7, 8, 9 in radio frame a +1 are both uplink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, and 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8 and 9 is downlink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink.

When the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', the uplink subframe attribute of the flexible subframes 3, 4, and 7 in the radio frame a +1 is shown, and the downlink subframe attribute of the flexible subframes 8 and 9 is shown.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attribute of flexible subframe 3 in radio frame a +1 is uplink, and the subframe attributes of flexible subframes 4, 7, 8, and 9 are downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 are all downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attribute of flexible subframe 3 in radio frame a +1 is uplink, and the subframe attributes of flexible subframes 4, 7, 8, and 9 are downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframe 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8, and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attribute of flexible subframe 3 in radio frame a +1 is uplink, and the subframe attributes of flexible subframes 4, 7, 8, and 9 are downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8, and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8, and 9 in the radio frame a +1 are all uplink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 are uplink, and the subframe attributes of the flexible subframe 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS, is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS, is '1', it indicates that the subframe attribute of flexible subframe 3 in radio frame a +1 is uplink, and the subframe attributes of flexible subframes 4, 7, 8, and 9 are downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 are uplink, and the subframe attributes of the flexible subframe 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 are uplink, and the subframe attributes of the flexible subframe 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8, and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attributes of the flexible subframes 3, 4, 7, 8 in the radio frame a +1 are uplink, and the subframe attributes of the flexible subframe 9 are downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

Or,

when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframes 3 and 4 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 7, 8 and 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '0' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7 in the radio frame a +1 is uplink, and the subframe attribute of the flexible subframes 8, 9 is downlink; when the second bit in the PCFICH of the radio frame a subframe 1DwPTS is '1' and when the second bit in the PCFICH of the radio frame a subframe 6DwPTS is '0', it indicates that the subframe attribute of the flexible subframe 3 in the radio frame a +1 is uplink, and the subframe attributes of the flexible subframes 4, 7, 8, and 9 are downlink; when the second bit in the PCFICH of radio frame a, subframe 1DwPTS is '1' and when the second bit in the PCFICH of radio frame a, subframe 6DwPTS is '1', it indicates that the subframe attribute of the flexible subframes 3, 4, 7, 8, 9 in radio frame a +1 is downlink.

By the embodiment, a method and a device for processing a flexible subframe are provided, which can dynamically change uplink and downlink proportion of a TDD system, thereby better meeting the requirement of dynamic change of uplink and downlink traffic.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for processing a flexible subframe, comprising:

the method comprises the following steps of indicating the subframe attribute of a flexible subframe through a physical control format indicator channel PCFICH in a downlink pilot time slot DwPTS, wherein the subframe attribute comprises the following steps: ascending or descending;

communicating on the flexible subframes according to the subframe attributes.

2. The method of claim 1, wherein indicating subframe attributes of a flexible subframe by a PCFICH in a DwPTS comprises:

3. The method of claim 2, wherein indicating the subframe property of the flexible subframe through a first preset bit information of bit information that the PCFICH can carry comprises:

4. The method of any of claims 1-3, wherein the flexible subframe refers to one of: one or more subframes configurable in a radio frame for transmission of one of: uplink signals, downlink signals and no signals are transmitted; subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers of 3, 4, 7, 8, 9 in the radio frame.

5. The method according to claim 2 or 3, wherein the first preset bit information, the second preset bit information, and the third preset bit information on the PCFICH in the DwPTS are all bit information that is not used for indicating the number of PDCCH symbols in the physical downlink control channel of the subframe in which the DwPTS is located.

6. An apparatus for processing flexible subframes, comprising:

a first indication module, configured to indicate a subframe attribute of a flexible subframe through a physical control format indicator channel PCFICH in a downlink pilot timeslot DwPTS, where the subframe attribute includes: ascending or descending;

a transmission module, configured to communicate on the flexible subframe according to the subframe attribute.

7. The apparatus of claim 6, wherein the first indication module comprises one of:

a fourth indicating module, configured to indicate, through third preset bit information carried by the PCFICH, a subframe attribute of a flexible subframe in a half frame where the DwPTS is located.

8. The apparatus of claim 7, wherein the second indication module comprises:

a fifth indicating module, configured to jointly indicate an attribute of a subframe of a flexible subframe in the first radio frame through fourth preset bit information carried by the PCFICH in a second radio frame, where the second radio frame is a radio frame that is adjacent to the first radio frame in a time domain and is located before the first radio frame in the time domain.

9. The apparatus according to any of claims 6 to 8, wherein the flexible subframe refers to one of: one or more subframes configurable in a radio frame for transmission of one of: uplink signals, downlink signals and no signals are transmitted; subframes supporting changing of a transmission direction at intervals of less than 640 ms; one or more of subframes with subframe numbers of 3, 4, 7, 8, 9 in the radio frame.

10. The apparatus of claim 7 or 8, wherein the first preset bit information, the second preset bit information, and the third preset bit information on the PCFICH in the DwPTS are all bit information that is not used for indicating the number of PDCCH symbols in a subframe in which the DwPTS is located.