CN101651895B - Method, equipment, system and wireless frame structure for time divide duplex communication of long term evolution - Google Patents

Abstract

The invention discloses a method, equipment, a system and a wireless frame structure for time divide duplex communication of long term evolution, relates to the technical field of wireless communication, and solves the problem that signal interference between base stations is easy to be caused when adjacent cells finish service transmission by adopting wireless frame structures of which switching periods are 5ms and of which matching relations are different. The embodiment of the invention adopts a transition wireless frame structure to carry out dispatching at a base station of a middle cell so as to avoid the problem of signal interference between the base stations of the adjacent cells. The embodiment of the invention is mainly applied to the base station of the middle cell and a user terminal.

Description

Long term evolution time division duplex communication method, device, system and wireless frame structure

technical field

The present invention relates to the field of wireless communication technology, in particular to time division duplex (TDD) technology in long-term evolution technology, a method, device and system for communicating in TDD according to different time ratio relationships in a wireless frame structure, and TDD scheduling The radio frame structure that needs to be used in the method.

Background technique

LTE (Long Term Evolution, long-term evolution technology) supports carrier bandwidth from 1.4MHz to 20MHz, and LTE supports both FDD (frequency division duplex) technology and TDD (time division duplex) technology to use spectrum resources.

In the TDD mobile communication system, the uplink service and the downlink service use different time slots of the same frequency, and one frame of data can be divided into ten subframes, and different subframes can transmit uplink service or downlink service respectively, and transmit uplink service through configuration and the number of subframes for downlink services, which can meet the data transmission requirements under different service requirements, such as voice services, interactive real-time data services, etc.

There is a 1ms special subframe in the TDD radio frame structure, which consists of three special time slots: DwPTS (downlink pilot time slot), GP (guard interval) and UpPTS (uplink pilot time slot), Among them, DwPTS is always used for downlink transmission, UpPTS is always used for uplink transmission, and GP is used as a guard time interval for downlink to uplink conversion in TDD. For the radio frame structure with a switching period of 5 ms, the No. 2 subframe and the No. 7 subframe are fixed as subframes for uplink services, and the No. 1 subframe and No. 6 subframe are special subframes. The wireless frame structure types of the basic ratio relationship are shown in the following table:

In the above table, U indicates that the subframe is used to transmit uplink services, D indicates that the subframe is used to transmit downlink services, and S indicates that the subframe is a special subframe.

In the process of using the wireless frame structure of the above-mentioned basic proportioning relationship for service transmission, the inventor found that at least the following problems existed in the prior art:

If the cells of the entire network are continuously distributed, when two adjacent cells use radio frame structures with a handover period of 5 ms but different ratios to complete service transmission, since different radio frame structures are in subframes corresponding to the same subframe number The services transmitted in different cells may be different, which may cause interference between base stations in adjacent cells. For example, the base station of one cell is used to receive data from user terminals in a certain subframe. It is required to transmit data to the user terminal in the frame. At this time, the base station in the first cell may receive the signals of the user terminal and the base station of the adjacent cell at the same time, causing signal interference.

Contents of the invention

Embodiments of the present invention provide a long-term evolution time-division duplex communication method, equipment, system, and wireless frame structure. Between adjacent cells, the switching period is 5ms, but the wireless frame structure with different ratios is used to complete the service. During transmission, avoid causing signal interference between base stations in adjacent cells.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A long-term evolution time division duplex communication method, comprising:

Broadcast the number of the wireless frame structure with a switching period of 5ms to the user terminal, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

When communicating with the user terminal, it is scheduled according to the transitional wireless frame structure with a switching period of 5ms. The transitional wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A long-term evolution time division duplex communication method, comprising:

Broadcast the number of the wireless frame structure with a switching period of 5ms to the user terminal, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Scheduling according to the wireless frame structure when communicating with the user terminal;

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A long-term evolution time division duplex communication method, comprising:

Receive the serial number of the wireless frame structure broadcast by the base station with a switching period of 5ms. The wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

Determine whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5ms. The transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

When the base station performs scheduling according to the transitional radio frame structure, the signal of the subframe whose use is marked as M in the transitional radio frame structure is ignored.

A long-term evolution time division duplex communication method, comprising:

Receive the serial number of the wireless frame structure broadcast by the base station with a switching period of 5ms. The wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Ignore the signal of the subframe whose purpose is marked as M;

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A base station, comprising:

The broadcast unit is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

The scheduling unit is configured to perform scheduling according to the transitional radio frame structure when the base station communicates with the user terminal, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A base station, comprising:

The broadcast unit is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

a scheduling unit, configured to perform scheduling according to the wireless frame structure when the base station communicates with the user terminal;

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A user terminal, comprising:

The receiving unit is used to receive the number of the wireless frame structure broadcast by the base station with a switching period of 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

The judging unit is used to judge whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5 ms, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

When the base station performs scheduling according to the transitional radio frame structure, the user terminal ignores the signals of the subframes whose purpose is marked as M in the transitional radio frame structure.

A user terminal, comprising:

The receiving unit is used to receive the number of the wireless frame structure broadcast by the base station with a switching period of 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

The user terminal ignores the signal of the subframe marked as M;

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A long-term evolution time division duplex communication system, including a base station and a user terminal,

The base station is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

And when the base station communicates with the user terminal, scheduling is performed according to the transitional radio frame structure, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

A long-term evolution time division duplex communication system, including a base station and a user terminal,

The base station is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

and when the base station communicates with the user terminal, perform scheduling according to the wireless frame structure;

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

The user terminal is used for receiving the number of the radio frame structure broadcast by the base station, and ignoring the signal of the subframe marked as M.

A wireless frame structure, the switching period of the wireless frame structure is 5ms, the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

The long-term evolution time division duplex communication method, device, system and wireless frame structure provided by the embodiment of the present invention, the wireless frame structure adopted is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

In the above wireless frame structure, since no traffic is transmitted in the third subframe, the fourth subframe, the eighth subframe and the ninth subframe, the base stations adjacent to the base station communicating with the above wireless frame structure are in these There will be no signal interference in the subframe, and other wireless frame structures with a switching period of 5ms are as follows:

It can be seen from the above table that the purposes of the 0th subframe, the 1st subframe, the 2nd subframe, the 5th subframe, the 6th subframe, and the 7th subframe completely correspond to the wireless frame structure adopted in this embodiment, so There is also no signal interference.

If the cells of the entire network are continuously distributed, when two adjacent cells use a wireless frame structure with a handover period of 5 ms but different ratios to complete service transmission, only the transitional cell in the middle needs to use the wireless frame structure provided by this embodiment. If the wireless frame structure is used for transmission, it will not cause signal interference to the base stations of adjacent cells, and non-adjacent cells can completely use wireless frame structures with different ratios to complete service transmission, so as to make full use of wireless frames with different ratios. Advantages brought by the structure to different businesses.

And because in this embodiment only need to increase the wireless frame structure of a kind of matching relationship, and the wireless frame structure of 8 kinds of matching relationship in total with the original 7 kinds, its serial number still only needs 3 binary digits to represent, does not need It is necessary to increase the number of digits of the label, which saves the overhead of the base station and the user terminal.

Description of drawings

FIG. 1 is a flowchart of a base station communication method in Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of the relationship between HARQ uplink scheduling and uplink timing in Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of the timing relationship of HARQ downlink feedback in Embodiment 1 of the present invention;

FIG. 4 is a block diagram of a base station in Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of continuously distributed cells in Embodiment 1 of the present invention;

FIG. 6 is a flowchart of a communication method for a user terminal in Embodiment 2 of the present invention;

FIG. 7 is a block diagram of a user terminal in Embodiment 2 of the present invention;

FIG. 8 is a flowchart of a base station communication method in Embodiment 3 of the present invention;

FIG. 9 is a flowchart of a communication method for a user terminal in Embodiment 3 of the present invention;

FIG. 10 is a block diagram of a base station in Embodiment 3 of the present invention;

Fig. 11 is a block diagram of a user terminal in Embodiment 3 of the present invention.

Detailed ways

The long term evolution time division duplex communication method, device, system and wireless frame structure of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

This embodiment provides a long-term evolution time division duplex communication method, which is mainly used in base stations of intermediate cells in continuous cells to avoid signal interference between base stations in adjacent cells. As shown in Figure 1, the intermediate The communication method adopted by the base station of the cell includes the following steps:

101. Like the message sent by the base station in the existing standard, the base station broadcasts to the user terminal the serial number of the wireless frame structure with a switching period of 5 ms. The wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

102. When the base station and the user terminal actually communicate, the base station performs scheduling according to the transitional radio frame structure with a switching period of 5 ms. The transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

Since the numbering of the wireless frame structure broadcast by the base station is stipulated in the existing standard, the design of the user terminal does not need to be changed in this way. When the terminal communicates, the base station of the intermediate cell performs scheduling according to the above-mentioned transitional wireless frame structure, and the above-mentioned M indicates that no service is transmitted in this subframe. Within the frame, the base stations of the intermediate cells will not generate signal interference to the base stations of adjacent cells. For the radio frame structure with a switching period of 5 ms, except for the above subframes, other subframes completely correspond to the transitional radio frame structure used in this embodiment, and no signal interference will be generated. Therefore, in the middle cell Scheduling by using the transitional radio frame structure provided by this embodiment will not cause signal interference to base stations of adjacent cells.

In actual application, the base station in the middle cell adopts the newly added wireless frame structure for scheduling, which can also avoid signal interference. The newly added wireless frame structure is as follows:

In some cases, other more wireless frame structures may be added. In this case, the number representing the wireless frame structure needs 4 or more digits to represent, increasing the resource consumption of the base station; and the above-mentioned new The HARQ (hybrid retransmission) timing used in the added wireless frame structure is not compatible with the timing of the existing seven wireless frame structures, and the HARQ timing of the newly added wireless frame structure needs to be redesigned.

Using the transitional wireless frame structure provided by this embodiment for scheduling can not only avoid signal interference from adjacent base stations, but also do not need to redesign the HARQ sequence. The specific analysis is as follows:

As shown in Figure 2, the base station schedules the service transmission of the 4th subframe in the G4 subframe in the figure, schedules the service transmission of the 2nd subframe in the G2 subframe, and returns the HARQ of the 4th subframe in the P4 subframe. For feedback information (such as ACK/NACK), the HARQ feedback information (such as ACK/NACK) of the second subframe is returned in the P2 subframe. If no traffic is transmitted in G4, G2, P4, P2, the 4th subframe and the 2nd subframe in Figure 2, there will be no impact on other subframes, and no traffic will be transmitted in the above subframes, Just form the transition wireless frame structure provided by this embodiment, specifically as follows:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

The signal detected by the user terminal in the nth subframe will feed back ACK/NACK in the n+kth subframe. As shown in Figure 3, the ACK/NACK of the 3rd uplink subframe is fed back in the 4th downlink subframe, and the ACK/NACK of the 8th subframe is fed back in the 9th subframe. No service is transmitted in the subframe, the 8th subframe, and the 9th subframe, which just form the transitional wireless frame structure provided in this embodiment, without affecting other subframes.

Therefore, the technical solution adopted in this embodiment can avoid the signal interference of adjacent base stations without redesigning the HARQ sequence.

In order to further reduce the signal interference of downlink pilots to adjacent base stations, when implementing this embodiment, the base station can set the downlink pilot time slot in the special subframe as empty when performing service scheduling, that is, the downlink pilot time slot is not sent, In this way, interference to downlink pilots generated by adjacent cell base stations can be avoided.

Corresponding to the above long term evolution time division duplex communication method, this embodiment further provides a base station, as shown in FIG. 4 , the base station includes: a broadcast unit 41 and a scheduling unit 42 .

The broadcast unit 41 is used to broadcast the number of the wireless frame structure to the user terminal, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

The scheduling unit 42 is configured to perform scheduling according to the transitional radio frame structure when the base station communicates with the user terminal, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

If the base station provided by this embodiment is set in the intermediate transitional cell of the continuously distributed cells, as shown in Figure 5, the base station in the intermediate cell will schedule services according to the above-mentioned transitional wireless frame structure, so that there will be no signal interference to its adjacent base stations .

From the above analysis of the long term evolution time division duplex communication method, it can be known that the base station in this embodiment can still adopt the current HARQ timing.

The above-mentioned base station and user terminal can form a long-term evolution time division duplex communication system. In this system, the base station is used to broadcast the serial number of the wireless frame structure to the user terminal. The wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

And when the base station communicates with the user terminal, scheduling is performed according to the transitional radio frame structure, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

Since the base station performs scheduling according to the transitional radio frame structure, the user terminal will neither receive signals nor send signals to the base station in the subframe marked as M, and there will be no user terminal and neighboring base stations in this In order to solve the problem of simultaneously sending signals in subframes, the base station in this embodiment will not be interfered by signals from neighboring cell base stations.

Example 2:

In Embodiment 1, although the problem of signal interference between adjacent cell base stations can be solved, and there is no need to redesign the HARQ sequence, but in Embodiment 1, the radio frame structure corresponding to the number broadcast by the base station to the user and the radio frame structure used for actual scheduling The frame structure is different, so that the user terminal needs to perform signal detection in the 3rd subframe, 4th subframe, 8th subframe, and 9th subframe, especially the user terminal needs to perform signal detection in the 4th subframe and 9th subframe Pilot frequency measurement is performed, but in fact there are no signals in these subframes, so these detections and measurements are redundant and will only consume resources of the user terminal needlessly.

In view of the above defects, this embodiment provides a long-term evolution time division duplex communication method, in which the base stations of intermediate cells in consecutive cells are used to avoid signal interference between base stations of adjacent cells, and at the same time reduce unnecessary resource consumption of user terminals.

The communication method on the base station side and the base station in this embodiment are exactly the same as those in Embodiment 1. This embodiment mainly improves the terminal in the communication system, as shown in FIG. 6 , the time division duplex communication method of the terminal includes the following steps :

601. The user terminal receives the serial number of the wireless frame structure whose switching period is 5 ms broadcast by the base station, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

602. The user terminal judges whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5 ms. If the scheduling is performed according to the transitional radio frame structure, step 603 is performed; otherwise, step 604 is performed, wherein the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

The user terminal determines whether the base station is scheduled according to the transitional radio frame structure, including but not limited to the following methods:

The user terminal first judges whether a valid signal is received from the subframe marked as M in the transitional radio frame structure, that is: whether the signal is received in the 3rd subframe, 4th subframe, 8th subframe, or 9th subframe signal; if no effective signal is received, it means that the base station is scheduled according to the transitional radio frame structure; otherwise, it means that the base station is not scheduled according to the transitional radio frame structure.

603. Ignore the signal of the subframe whose use mark is M in the transitional radio frame structure, that is, do not perform signal detection or pilot in the 3rd subframe, 4th subframe, 8th subframe, and 9th subframe Measurement.

604. Perform signal detection and measurement according to the wireless frame structure corresponding to the received number, that is, perform signal detection and measurement according to the following wireless frame structure:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

Corresponding to the above long term evolution time division duplex communication method, this embodiment further provides a user terminal, as shown in FIG. 7 , the user terminal includes: a receiving unit 71 and a judging unit 72 .

Wherein, the receiving unit 71 is used to receive the serial number of the wireless frame structure whose switching period broadcast by the base station is 5ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

The judging unit 72 is used to judge whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5 ms, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

When the base station performs scheduling according to the transitional radio frame structure, the user terminal ignores the signals of the subframes marked as M in the transitional radio frame structure, that is: in the 3rd subframe, 4th subframe, 8th subframe, In the ninth subframe, neither signal detection nor pilot measurement is performed.

The specific judgment of the above judgment unit 72 includes but is not limited to the following implementation methods: the judgment unit 72 judges whether the receiving unit 71 receives a valid signal from the subframe marked as M in the transitional wireless frame structure, that is: in the third subframe frame, the 4th subframe, the 8th subframe, and the 9th subframe receive valid signals; if no valid signal is received, the judging unit 72 judges that the base station is scheduled according to the transitional radio frame structure.

In actual use, it can be judged whether a signal is received in the above subframe for a continuous period of time. If no signal is received in the continuous period of time, it means that the base station is scheduled according to the transitional wireless frame structure, otherwise it means that the base station is scheduled. Scheduling is not performed according to the transitional radio frame structure. A period of continuous time here can generally be set as 100ms or other time.

The base station in Embodiment 1 and the user terminal in this embodiment can form a long-term evolution time-division duplex communication system, and the base station is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5 ms. The wireless frame structure for:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D

And when the base station communicates with the user terminal, scheduling is performed according to the transitional radio frame structure with a switching period of 5 ms, and the transitional radio frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

The user terminal is used to receive the serial number of the radio frame structure broadcast by the base station, judge whether the base station performs scheduling according to the transitional radio frame structure, and when the base station performs scheduling according to the transitional radio frame structure, ignore the usage flag in the transitional radio frame structure as Signals of M subframes, that is, signal detection and pilot measurement are not performed in the subframes marked as M.

Wherein, the user terminal judging whether the base station performs scheduling according to the transitional radio frame structure includes but is not limited to the following implementation manners: the user terminal judges whether a valid signal is received from the subframe marked as M in the transitional radio frame structure; valid signal, it is determined that the base station performs scheduling according to the transitional radio frame structure.

Since the base station in this embodiment uses a transitional radio frame structure for scheduling, if its adjacent cells use other radio frame structures with a switching period of 5ms for scheduling, this will not cause signal interference with the base station, and the transition in this embodiment The radio frame structure can adopt the existing HARQ timing.

At the same time, since the user terminal in this embodiment determines that the base station adopts the transitional radio frame structure scheduling, it will no longer perform pilot measurement and Signal detection reduces unnecessary resource consumption of user terminals.

Example 3:

This embodiment provides a long-term evolution time-division duplex communication method. This communication method is mainly used in base stations of intermediate cells in continuous cells to avoid signal interference between base stations in adjacent cells. As shown in FIG. 8, the intermediate The communication method adopted by the base station of the cell includes the following steps:

801. The base station broadcasts to the user terminal the serial number of the wireless frame structure with a switching period of 5 ms. The wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

802. When the base station communicates with the user terminal, the base station performs scheduling according to the wireless frame structure;

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

Due to the above-mentioned wireless frame structure broadcast by the base station to the user terminal in this embodiment, this embodiment also provides a long-term evolution time-division duplex communication method for the user terminal, as shown in FIG. 9 , including the following steps:

901. The user terminal receives the number of the wireless frame structure whose switching period is 5ms broadcast by the base station, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

902. The processing method corresponding to the above wireless frame structure is stored in the user terminal, that is, the user terminal ignores the signal of the subframe whose purpose is marked as M, and in the 3rd subframe, the 4th subframe, the 8th subframe, and the 9th subframe The subframe does not perform signal detection or pilot measurement, which can reduce unnecessary resource consumption of the user terminal.

Corresponding to the communication method described in FIG. 8 , this embodiment further provides a base station. As shown in FIG. 10 , the base station includes: a broadcasting unit 1001 and a scheduling unit 1002 .

The broadcast unit 1001 is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5 ms, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

The scheduling unit 1002 is configured to perform scheduling according to the radio frame structure when the base station communicates with the user terminal.

Corresponding to the above-mentioned communication method in FIG. 9, this embodiment also provides a user terminal. As shown in FIG. 11, the user interrupt includes a receiving unit 111, which is used to receive the serial number of the wireless frame structure broadcast by the base station with a switching period of 5 ms , the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe.

When receiving the number of the above radio frame structure, the user terminal in this embodiment ignores the signal of the subframe marked as M, that is: in the 3rd subframe, the 4th subframe, the 8th subframe, and the 9th subframe The frame does not perform signal detection or pilot measurement, which can reduce unnecessary resource consumption of the user terminal.

The base station and the user terminal in this embodiment can form a long-term evolution time division duplex communication system, and the base station is used to broadcast the serial number of the wireless frame structure to the user terminal, and the wireless frame structure is:

subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m

Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe;

When the base station communicates with the user terminal, the base station performs scheduling according to the wireless frame structure;

The user terminal is used for receiving the number of the radio frame structure broadcast by the base station, and ignoring the signal of the subframe marked as M.

This embodiment is the same as that in Embodiment 1, since the wireless frame structure adopted by the base station in the dispatching room does not perform service transmission in the third subframe, the fourth subframe, the eighth subframe, and the ninth subframe, as long as the corresponding The base stations in adjacent cells also use the radio frame structure with a switching period of 5 ms for scheduling, so the base stations in this embodiment will not generate signal interference with base stations in adjacent cells.

The same as in Embodiment 1, the wireless frame structure adopted in this embodiment does not need to redesign the HARQ timing, and the existing HARQ timing can be used for scheduling.

In order to further reduce the signal interference of downlink pilots to adjacent base stations, when implementing this embodiment, the base station can set the downlink pilot time slot in the special subframe as empty when performing service scheduling, that is, the downlink pilot time slot is not sent, In this way, interference to downlink pilots generated by adjacent cell base stations can be avoided.

The embodiment of the present invention is mainly used in the cell communication of the long-term evolution technology, especially the base station and the user terminal of the intermediate cell of the continuously distributed cells. Of course, the base station and the user terminal of the non-intermediate cell can also use the embodiment of the present invention to communicate.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (16)

1. A long-term evolution time division duplex communication method, characterized in that, comprising: Broadcast the number of the wireless frame structure with a switching period of 5ms to the user terminal, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D When communicating with the user terminal, it is scheduled according to the transitional wireless frame structure with a switching period of 5ms. The transitional wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 2. The time division duplex communication method of long-term evolution according to claim 1, is characterized in that, this method also comprises: When communicating with the user terminal, the downlink pilot time slot in the special subframe in the wireless frame structure is empty. 3. A long-term evolution time division duplex communication method, characterized in that, comprising: Broadcast the number of the wireless frame structure with a switching period of 5ms to the user terminal, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Scheduling according to the wireless frame structure when communicating with the user terminal; Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 4. The time division duplex communication method of long term evolution according to claim 3, is characterized in that, the method also comprises: When communicating with the user terminal, the downlink pilot time slot in the special subframe in the wireless frame structure is empty. 5. A long-term evolution time division duplex communication method, characterized in that, comprising: Receive the serial number of the wireless frame structure broadcast by the base station with a switching period of 5ms. The wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D Determine whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5ms. The transitional radio frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe; When the base station performs scheduling according to the transitional radio frame structure, the signal of the subframe whose use is marked as M in the transitional radio frame structure is ignored. 6. the time division duplex signal processing method of long term evolution according to claim 5, is characterized in that, the method for judging whether base station is scheduled according to transitional wireless frame structure comprises: Judging whether a valid signal is received from a subframe whose purpose is marked as M in the transitional radio frame structure; If no effective signal is received, it means that the base station performs scheduling according to the transitional radio frame structure. 7. A long-term evolution time division duplex communication method, characterized in that, comprising: Receive the serial number of the wireless frame structure broadcast by the base station with a switching period of 5ms. The wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Ignore the signal of the subframe whose purpose is marked as M; Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 8. A base station, characterized in that it comprises: The broadcast unit is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D The scheduling unit is configured to perform scheduling according to the transitional radio frame structure when the base station communicates with the user terminal, and the transitional radio frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 9. A base station, characterized in that it comprises: The broadcast unit is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m A scheduling unit, configured to perform scheduling according to the wireless frame structure when the base station communicates with the user terminal; Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 10. A user terminal, characterized in that, comprising: The receiving unit is used to receive the number of the wireless frame structure broadcast by the base station with a switching period of 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D The judging unit is used to judge whether the base station is scheduled according to the transitional radio frame structure with a switching period of 5 ms, and the transitional radio frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe; When the base station performs scheduling according to the transitional radio frame structure, the user terminal ignores the signals of the subframes whose purpose is marked as M in the transitional radio frame structure. 11. The user terminal according to claim 10, wherein the judging unit judges whether the receiving unit receives a valid signal from a subframe marked as M in the transitional radio frame structure; If no effective signal is received, the judging unit judges that the base station performs scheduling according to the transitional radio frame structure. 12. A user terminal, characterized in that it comprises: The receiving unit is used to receive the number of the wireless frame structure broadcast by the base station with a switching period of 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m The user terminal ignores the signal of the subframe marked as M; Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 13. A long-term evolution time division duplex communication system, comprising a base station and a user terminal, characterized in that: The base station is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u u D D S u u D And when the base station communicates with the user terminal, scheduling is performed according to the transitional radio frame structure, and the transitional radio frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m Wherein, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe. 14. The long term evolution time division duplex communication system according to claim 13, characterized in that: The user terminal is used to receive the number of the radio frame structure broadcast by the base station, judge whether the base station performs scheduling according to the transitional radio frame structure, and when the base station performs scheduling according to the transitional radio frame structure, ignore the usage flag in the transitional radio frame structure as The signal of the subframe of M. 15. The long term evolution time division duplex communication system according to claim 13, characterized in that: The user terminal judges whether a valid signal is received from a subframe marked as M in the transitional radio frame structure; if no valid signal is received, it is determined that the base station performs scheduling according to the transitional radio frame structure. 16. A long-term evolution time division duplex communication system, comprising a base station and a user terminal, characterized in that: The base station is used to broadcast to the user terminal the serial number of the wireless frame structure whose switching period is 5ms, and the wireless frame structure is: subframe number 0 1 2 3 4 5 6 7 8 9 Purpose mark D S u m m D S u m m And when the base station communicates with the user terminal, schedule according to the wireless frame structure; Among them, D indicates that the subframe is used to transmit downlink services, U indicates that the subframe is used to transmit uplink services, S indicates that the subframe is a special subframe, and M indicates that no services are transmitted in the subframe; The user terminal is used for receiving the number of the radio frame structure broadcast by the base station, and ignoring the signal of the subframe marked as M.

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