CN102404850B

CN102404850B - Configuration method and configuration device for special time slots in long term evolution (LTE) system

Info

Publication number: CN102404850B
Application number: CN201010273995.0A
Authority: CN
Inventors: 徐德平; 张同须; 张玉胜; 贾东燕; 汤利民
Original assignee: China Mobile Group Design Institute Co Ltd
Current assignee: China Mobile Group Design Institute Co Ltd
Priority date: 2010-09-07
Filing date: 2010-09-07
Publication date: 2014-09-10
Anticipated expiration: 2030-09-07
Also published as: CN102404850A

Abstract

The invention discloses a configuration method and a configuration device for special time slots in a long term evolution (LTE) system. The method mainly comprises the following steps of: determining first total time occupied by GPs (Guide Periods) and UpPTSs (Uplink Pilot Time Slots) in uplink service time slots and special time slots in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system according to the number of the uplink service time slots in the TD-SCDMA system; determining second total time occupied by uplink service subframes in the LTE system according to the number of the uplink service subframes in the LTE system; determining the largest symbolic number of DwPTSs (Downlink Pilot Time Slots) in the special time slots of the LTE system according to the first total time, the second total time and the time occupied by each symbol in the special time slots of the LTE system; and configuring symbolic numbers occupied by the DwPTSs, the GPs and the UpPTSs in the special time slots. With the adoption of the technical scheme, the special time slots in the LTE system can be reasonably configured so as to effectively realize the coexistence of adjacent frequencies of the LTE system and the TD-SCDMA system.

Description

Method and device for configuring special time slot in long term evolution system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring a special timeslot in a long term evolution system.

Background

A frame structure of an LTE (Long Term Evolution ) system is shown in fig. 1, in the frame structure, a 10ms radio frame (radio frame) is divided into two half frames (half frames) of 5ms, each half frame is composed of 5 subframes (Sub frames) of 1ms, wherein 4 normal subframes and 1 special subframe, the normal subframes include two slots of 0.5ms, the special subframe includes 3 special slots, and the last 3 special slots are: DwPTS (Downlink Pilot Time Slot), UpPTS (Uplink Pilot Time Slot), GP (guard period), where:

UpPTS: the Physical Random Access Channel (PRACH) is mainly used for carrying an uplink channel, and is usually transmitted;

GP: the method is mainly used as a guard interval during up-down conversion;

DwPTS: in addition to the fixed synchronization channel (PSCH) and control channel (PHICH, PDCCH, PCFICH), traffic channel (PDSCH) may also be transmitted, with the size of the traffic channel capacity being determined by the number of symbols configured by DwPTS.

Based on the above frame structure of LTE, there are two uplink and downlink switching points in the LTE system, and the uplink and downlink switching points are determined by a service subframe matching relationship and a special time slot matching relationship, where the special time slot matching relationship refers to a ratio of symbol numbers occupied by three special time slots (DwPTS, GP, and UpPTS), respectively.

The LTE system, as a next-generation mobile communication technology for subsequent smooth evolution of TD-SCDMA (Time-Division synchronous Code Division multiple Access), can coexist for a long Time in TD-SCDMA, and can be used adjacent to TD-SCDMA in the F band (1880-1920 MHz) and the E band (2320-2370 MHz) of TD-SCDMA in addition to the D band (2570-2620 MHz) dedicated to LTE.

The inventor finds that when an LTE system and a TD-SCDMA system coexist and are in adjacent frequency bands, the problem of adjacent frequency interference occurs, namely when DwPTS of the LTE and UpPTS of the TD-SCDMA are overlapped, signals sent by an LTE base station generate interference on received signals of the TD-SCDMA base station; when the UpPTS of the LTE is overlapped with the DwPTS of the TD-SCDMA, the signal sent by the TD-SCDMA base station generates interference to the received signal of the LTE base station. In addition, if the DwPTS (or UpPTS) of LTE extends into the GP of TD-SCDMA, the interference of uplink and downlink signals between the LTE system and the TD-SCDMA can also be caused.

In summary, in the adjacent frequency coexistence stage of the LTE system and the TD-SCDMA system, if the time lengths of the three special time slots (DwPTS, GP, and UpPTS) are not properly configured, interference exists between uplink and downlink signals between the LTE system and the TD-SCDMA system, so that the adjacent frequency coexistence of the LTE system and the TD-SCDMA system cannot be effectively realized.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method and an apparatus for configuring a special time slot in a long term evolution system, and by using the technical scheme, the special time slot in the LTE system can be reasonably configured to effectively implement adjacent frequency coexistence of the LTE system and the TD-SCDMA system.

The embodiment of the invention is realized by the following technical scheme:

according to an aspect of the embodiments of the present invention, a method for configuring a special timeslot in a long term evolution system is provided.

The method for configuring the special time slot in the long term evolution system provided by the embodiment of the invention comprises the following steps:

determining a first total time occupied by an upper service time slot, a guard interval GP in a special time slot and an uplink pilot time slot UpPTS in a TD-SCDMA system according to the number of the upper service time slots in the TD-SCDMA system; and

determining a second total time occupied by uplink service subframes in a Long Term Evolution (LTE) system according to the number of the uplink service subframes in the LTE system;

determining the maximum symbol number of a downlink pilot time slot DwPTS in the special time slot of the LTE system according to the first total time, the second total time and the time occupied by each symbol in the special time slot of the LTE system;

and configuring the number of symbols respectively occupied by the DwPTS, the GP and the UpPTS in the special time slot according to the determined maximum number of symbols of the DwPTS.

According to another aspect of the embodiments of the present invention, a device for configuring a special timeslot in a long term evolution system is also provided.

The device for configuring the special time slot in the long term evolution system provided by the embodiment of the invention comprises:

a first time determining unit, configured to determine, according to the number of uplink service time slots in a TD-SCDMA system accessed by TD-SCDMA, a first total time occupied by the uplink service time slots, a guard interval GP in a special time slot, and an uplink pilot time slot UpPTS in the TD-SCDMA system;

a second time determining unit, configured to determine, according to the number of uplink service subframes in a long term evolution LTE system, a second total time occupied by the uplink service subframes in the LTE system;

a maximum symbol number determining unit, configured to determine a maximum symbol number of a downlink pilot time slot DwPTS in a special time slot of the LTE system according to the first total time determined by the first time determining unit, the second total time determined by the second time determining unit, and a time occupied by each symbol in the special time slot of the LTE system;

and a configuration unit, configured to configure the symbol numbers respectively occupied by the DwPTS, the GP, and the UpPTS in the special time slot according to the maximum symbol number of the DwPTS determined by the maximum symbol number determination unit.

According to the at least one technical scheme provided by the embodiment of the invention, the first total time occupied by the business-going time slot in the TD-SCDMA system, the GP in the special time slot and the UpPTS is determined according to the number of the business-going time slots in the TD-SCDMA system; determining a second total time occupied by the uplink service subframes in the LTE system according to the number of the uplink service subframes in the LTE system; determining the maximum symbol number of DwPTS in the special time slot of the LTE system according to the first total time, the second total time and the time occupied by each symbol in the special time slot of the LTE system; and according to the determined maximum symbol number of the DwPTS, configuring the symbol numbers respectively occupied by the DwPTS, the GP and the UpPTS in the special time slot. According to the technical scheme, the maximum symbol number of the DwPTS in the special time slot of the LTE system can be determined according to the total time occupied by the uplink service time slot, the GP and the UpPTS in the TD-SCDMA system and the total time occupied by the uplink service subframe in the LTE system, so that the symbol numbers respectively occupied by the GP and the UpPTS in the special time slot of the LTE system are reasonably distributed according to the determined maximum symbol number of the DwPTS, and the adjacent frequency coexistence of the LTE system and the TD-SCDMA system is effectively realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

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 specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a frame structure of an LTE system;

fig. 2 is a schematic diagram illustrating a relationship between a frame structure of an LTE system and a frame structure of a TD-SCDMA system according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for configuring a special timeslot in an LTE system according to an embodiment of the present invention;

fig. 4 is a flowchart of determining a first total time according to an embodiment of the present invention;

fig. 5 is a first flowchart for determining the maximum symbol number of DwPTS according to an embodiment of the present invention;

fig. 6 is a second flowchart of determining the maximum symbol number of DwPTS according to the first embodiment of the present invention;

fig. 7 is a flowchart of configuring DwPTS, GP and UpPTS according to an embodiment of the present invention;

fig. 8 is a first schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 9 is a second schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 10 is a third schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 11 is a fourth schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 12 is a fifth schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 13 is a sixth schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 14 is a seventh schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 15 is an eighth schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention;

fig. 16 is a ninth schematic configuration diagram of a special timeslot in a long term evolution system according to a second embodiment of the present invention.

Detailed Description

In order to provide a scheme for effectively implementing adjacent frequency coexistence of an LTE system and a TD-SCDMA system, an embodiment of the present invention provides a method and an apparatus for configuring a special time slot in a long term evolution system, and the following describes preferred embodiments of the present invention with reference to the drawings in the specification. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

According to the embodiment of the invention, in order to avoid adjacent channel interference between an LTE system and a TD-SCDMA system, an optimization scheme is provided for the matching relation between special time slots (DwPTS, GP and UpPTS) in the LTE system, and the matching relation between the special time slots is embodied by the number of symbols occupied by each special time slot. Specifically, to avoid the adjacent channel interference between the LTE system and the TD-SCDMA system under the condition of ensuring the alignment of the service timeslots, when configuring the number of symbols respectively occupied by DwPTS, GP, and UpPTS, the configuration principle according to is as follows:

1. the DwPTS of LTE cannot overlap with the UpPTS of TD-SCDMA, and cannot exceed the DwPTS of TD-SCDMA and extend into GP of the TD-SCDMA system;

2. the UpPTS of LTE cannot overlap with the DwPTS of TD-SCDMA and cannot extend beyond the UpPTS of TD-SCDMA into the GP of the TD-SCDMA system.

According to the configuration principle, it is also ensured that the DwPTS and the UpPTS of the LTE are respectively outside the GP of the TD-SCDMA system, as shown in fig. 2, the left boundary of the GP of the TD-SCDMA system is a, and the right boundary of the GP of the TD-SCDMA system is B, when the DwPTS of the LTE system is configured, the right boundary of the DwPTS should be made before the left boundary a of the GP in the TD-SCDMA system, and when the UpPTS of the LTE system is configured, the left boundary of the UpPTS should be made after the right boundary B of the GP in the TD-SCDMA system. It should be understood that fig. 2 is only a schematic diagram showing the relationship between the special time slot in the LTE system and the special time slot in the TD-SCDMA system, and does not represent the actual time slot matching relationship.

Example one

The embodiment of the invention provides a configuration method of a special time slot in an LTE system, which determines a configuration mode of the special time slot in the LTE system according to a proportional relation of uplink and downlink service time slots configured in a TD-SCDMA system and a proportional relation of uplink and downlink service subframes configured in the LTE system.

As shown in fig. 3, a method for configuring a special timeslot in an LTE system according to an embodiment of the present invention mainly includes the following steps:

step 301, determining a first total time occupied by the uplink service time slot, the GP in the special time slot and the UpPTS in the TD-SCDMA system according to the number of the uplink service time slots in the TD-SCDMA system.

Step 302, determining a second total time occupied by the uplink service subframe in the LTE system according to the number of the uplink service subframes in the LTE system.

Step 301 and step 302 are not executed in a strict order, and in practical applications, step 301 and step 302 may be executed first, step 302 and step 301 may be executed first, or both steps may be executed simultaneously.

And step 303, determining the maximum symbol number of the DwPTS in the special time slot of the LTE system according to the first total time determined in step 301, the second total time determined in step 302, and the time occupied by each symbol in the special time slot of the LTE system.

And step 304, according to the determined maximum symbol number of the DwPTS, configuring the symbol numbers respectively occupied by the DwPTS, the GP and the UpPTS in the special time slot in the LTE system, and ending the configuration process of the special time slot in the LTE system.

In the technical solution provided in the first embodiment of the present invention, the time determined in step 301 is a time required by an uplink service in the TD-SCDMA system without being interfered, the time determined in step 302 is a time required by an uplink service in the LTE system, and the minimum value of the time occupied by the GP and the UpPTS in the LTE system can be determined by subtracting the second total time from the first total time, that is, the time occupied by the GP plus the time occupied by the UpPTS is greater than or equal to a time difference between the first total time and the second total time, when the uplink service in the TD-SCDMA system is not interfered, so as to determine the maximum number of symbols occupied by the DwPTS according to the time difference.

In step 301 of the process shown in fig. 3, a process of determining a first total time occupied by the upper service time slot, the GP in the special time slot, and the UpPTS in the TD-SCDMA system according to the number of the upper service time slots in the TD-SCDMA system, as shown in fig. 4, mainly includes the following steps:

step 401, determining a proportional relationship between uplink and downlink service timeslots configured in the TD-SCDMA system.

At present, in a TD-SCDMA system, the proportional relationship between uplink and downlink service timeslots mainly includes: 1: 5. 2: 4. 3: 3. 4: 2. 5: 1, in step 401, according to the actual configuration of the current system, determining a proportional relationship M between uplink and downlink service timeslots configured in the TD-SCDMA system: and N is added.

Step 402, determining the number of the upper business time slots in the TD-SCDMA system.

In this step 402, the number of uplink service timeslots in the TD-SCDMA system, that is, the uplink and downlink service timeslot proportion relationship M configured in the system: the value of M in N.

Step 403, obtaining a first total time by multiplying the number of the uplink service time slots in the TD-SCDMA system by the time occupied by each time slot, and adding the time occupied by the GP in the special time slot of the TD-SCDMA system and the time occupied by the UpPTS, so as to end the process of determining the first time.

In this step 403, the first total time may be determined by the following formula:

T1=M*625+125+75；

wherein, M is the number of time slots occupied by the uplink service in the TD-SCDMA system, and 625 is the time occupied by each time slot in the TD-SCDMA system; 125 is the time occupied by the UpPTS; 75 is the time occupied by GP, and the units of each value in the formula are mus.

According to the formula, if the ratio relationship of the uplink and downlink service time slots configured in the TD-SCDMA system is 2:4 or 2:5, where 2:4 is the case without the downlink time slot TS0, and 2:5 refers to the case with the downlink time slot TS0, the number of time slots occupied by the uplink service in the TD-SCDMA system configured as 2:4 (or 2: 5) can be determined to be 2 according to the ratio relationship of the uplink and downlink service time slots, so as to determine that the total time occupied by the uplink service in the TD-SCDMA system configured as 2:4 (or 2: 5) is 2 × 625+125+75=1550 μ s.

In step 302 of the flow shown in fig. 3, the process of determining the number of uplink service subframes in the LTE system is basically the same as the process described in steps 401 to 402, that is, the proportional relationship S between uplink and downlink service subframes configured in the LTE system is determined: and N, determining the number of the uplink service subframes in the LTE system to be S according to the proportional relation. After determining the number of uplink traffic subframes in the LTE system, the second total time may be determined by the following formula:

T2=S*1000；

wherein: s is the number of service subframes in the LTE system, 1000 is the time occupied by each subframe in the LTE system, and the unit of each value in the formula is mus.

In step 303 of the process shown in fig. 3, determining the maximum symbol number of the DwPTS in the special timeslot of the LTE system according to the first total time determined in step 301, the second total time determined in step 302, and the time occupied by each symbol in the special timeslot of the LTE system may be preferably obtained through the following two specific embodiments:

detailed description of the invention

In the first embodiment, the minimum number of symbols occupied by GP and UpPTS in a special timeslot of the LTE system is determined, and then the maximum number of symbols of DwPTS is determined.

As shown in fig. 5, determining the maximum symbol number of DwPTS in the special timeslot of the LTE system includes the following steps:

and step 501, subtracting the second total time determined in step 302 from the first total time determined in step 301 to obtain a time difference value.

And 502, dividing the time difference value calculated in the step 501 by the time occupied by each symbol in the special time slot of the LTE system to obtain the minimum number of symbols occupied by GP and UpPTS in the special time slot of the LTE system.

Step 503 is to determine whether the minimum number of symbols calculated in step 502 is a positive number, if yes, step 504 is executed, and if no, step 505 is executed.

Step 504, subtracting the minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot, and ending the process of determining the maximum symbol number of the DwPTS.

And 505, rounding the minimum symbol number upwards, and subtracting the rounded minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot, and ending the process of determining the maximum symbol number of the DwPTS.

In step 502 of the flow shown in fig. 5, according to different CP (Cyclic Prefix) types configured in the LTE system, the time occupied by each symbol in a special slot of the LTE system is also different, specifically:

when the CP type configured in the LTE system is a normal CP (i.e., short CP), the time occupied by each symbol in a special slot is:

66.7μs+4.7μs≈71.4μs。

here, the time occupied by each symbol in the special slot is about 71.4, and in an actual system, the 1 st symbol and the 8 th symbol of the special slot in some LTE systems occupy about 5.2 μ s, according to which the time occupied by each symbol in the special slot is:

[（66.7μs+4.7μs）×12+（66.7+5.2）×2]÷14≈71.4μs。

wherein: both 66.7 μ s and 4.7 μ s are approximate values, and similarly as follows, the non-integers of the embodiments of the present invention retain a single decimal place.

When the CP type configured in the LTE system is an extended CP (i.e., long CP), the time occupied by each symbol in a special slot is:

66.7μs+16.7μs=83.4μs。

wherein: both 66.7 μ s and 16.7 μ s are approximate values, and similarly as follows, the non-integers in the embodiments of the present invention retain one decimal place.

In step 504 and step 505 of the flow shown in fig. 5, the total number of symbols included in the special timeslot of the LTE system is different according to different CP types configured in the LTE system, specifically:

when the CP type configured in the LTE system is a normal CP (i.e., short CP), the number of total symbols included in the special slot of the LTE system is: 14.

when the CP type configured in the LTE system is an extended CP (i.e., long CP), the special time slot of the LTE system includes a total number of symbols: 12.

detailed description of the invention

In the second embodiment, the maximum symbol number of DwPTS can be directly determined.

As shown in fig. 6, determining the maximum symbol number of DwPTS in the special timeslot of the LTE system includes the following steps:

and 601, subtracting the second total time determined in the step 302 from the first total time determined in the step 301 to obtain a first time difference value.

And step 602, subtracting the first time difference value from the total time occupied by the special time slot of the LTE system to obtain a second time difference value.

Step 603, dividing the time occupied by each symbol in the special time slot of the LTE system by the second time difference to obtain the maximum number of symbols occupied by the DwPTS in the special time slot of the LTE system.

Step 604, determining whether the maximum symbol number calculated in step 603 is a positive number, if not, executing step 605; if yes, the process of determining the maximum symbol number of the DwPTS is ended.

Step 605, take the value of the maximum symbol number downwards, and then the process of determining the maximum symbol number of the DwPTS is finished.

In step 304 of the process shown in fig. 3, the symbol numbers respectively occupied by the DwPTS, GP, and UpPTS in the special timeslot in the LTE system are configured according to the determined maximum symbol number of the DwPTS, as shown in fig. 7, the process mainly includes the following steps:

step 701, determining the total number of symbols included in the special time slot of the LTE system according to the CP type configured in the LTE system.

Step 702, configuring the symbol number occupied by the DwPTS in the special time slot to be less than or equal to the determined maximum symbol number of the DwPTS.

And 703, configuring the number of symbols occupied by the GP in the special time slot to be more than or equal to the minimum number of symbols occupied by the GP, wherein the minimum number of symbols is an integer obtained by dividing the time occupied by the GP by the time occupied by each symbol in the special time slot and rounding up.

In this step 703, if the CP is normal CP, the time occupied by GP is 75 μ s, the time occupied by each symbol in the special timeslot is 1000 μ s/14 ≈ 1.05, and the integer obtained by rounding up is 2; for the extended CP, the time occupied by GP is 75 μ s, the time occupied by each symbol in the special slot is 1000 μ s/12=0.9, and the integer rounded up is 1.

Step 704, the number of symbols occupied by the UpPTS in the configured special time slot is the determined total number of symbols included in the special time slot of the LTE system, and the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP are subtracted, so that the process of configuring the special time slot in the LTE system is finished.

In order to better understand the technical solution provided by the first embodiment of the present invention, the following detailed description of the preferred embodiment of the present invention is continued with reference to specific application scenarios:

the scenario provided by this embodiment is: the ratio of uplink and downlink service time slots configured by the TD-SCDMA system is 2:4 or 2:5, and the ratio of uplink and downlink service subframes configured by the LTE system is 1: 3.

According to the application scenario, the time slot chips and the time schedule of the TD-SCDMA system are as follows:

the number of the uplink service time slots in the TD-SCDMA system can be determined according to the proportional relation of the uplink service time slots and the downlink service time slots configured by the TD-SCDMA system, and then the first total time occupied by the uplink service time slots, GP in the special time slots and UpPTS is determined according to the table:

T1=2*625+125+75=1550μs；

determining a second total time T2=1 × 1000=1000 μ s occupied by the uplink service subframe in the LTE system according to a proportional relationship between the uplink subframe and the downlink subframe in the LTE system;

if the above first embodiment is adopted, the process of determining the maximum number of symbols is as follows:

when the maximum symbol number of DwPTS in the special time slot of the LTE system is determined, the first total time 1550 mus is used for subtracting the second total time 1000 mus to obtain a time difference value 550 mus;

if the CP type configured in the LTE system is a normal CP, dividing the time difference value of 550 μ s by 71.4 μ s (i.e., 66.7 μ s +4.7 μ s) occupied by each symbol in the special time slot of the LTE system to obtain a minimum symbol number 7.7 occupied by GP and UpPTS in total in the special time slot of the LTE system, rounding up to 8, and subtracting the rounded up minimum symbol number 8 from a total symbol number 14 included in the special time slot of the LTE system to obtain a maximum symbol number 6 of DwPTS in the special time slot;

if the CP type configured in the LTE system is an extended CP, dividing the time difference value of 550 μ s by 83.4 μ s (i.e., 66.7 μ s +16.7 μ s) occupied by each symbol in the special time slot of the LTE system to obtain a minimum symbol number 6.6 occupied by GP and UpPTS in total in the special time slot of the LTE system, rounding up to 7, and subtracting the rounded-up minimum symbol number 7 from a total symbol number 12 included in the special time slot of the LTE system to obtain a maximum symbol number 5 of DwPTS in the special time slot.

If the second embodiment is adopted, the process of determining the maximum number of symbols is as follows:

subtracting the second total time 1000 mus from the first total time 1550 mus to obtain a first time difference value 550 mus, and subtracting the first time difference value 550 mus from the total time 1000 mus occupied by the special time slot of the LTE system to obtain a second time difference value 450 mus;

if the CP type configured in the LTE system is the conventional CP, dividing the time occupied by each symbol in the special time slot of the LTE system by the time of 71.4 mus occupied by the second time difference value of 450 mus to obtain the maximum symbol number of 6.3 occupied by the DwPTS in the special time slot of the LTE system, and rounding the maximum symbol number of 6.3 to obtain 6;

if the CP type configured in the LTE system is the extended CP, the maximum symbol number 5.3 occupied by the DwPTS in the special time slot of the LTE system is obtained by dividing the time occupied by each symbol in the special time slot of the LTE system by the second time difference value of 450 mu s, and 5 is obtained by rounding the maximum symbol number 5.3.

In summary, under the conventional CP configuration, the determined maximum number of symbols of the DwPTS is 6, that is, when the system configures the number of symbols of the DwPTS, 6 symbols are configured at most; under the extended CP configuration, the maximum symbol number of the DwPTS is determined to be 5, namely, when the system configures the symbol number of the DwPTS, 5 symbols are configured at most. Further, if the CP type configured in the LTE system is the normal CP, the number of symbols occupied by the GP in the configured special time slot is greater than or equal to 2 (the determination process is described in step 703), the number of symbols occupied by the UpPTS in the configured special time slot is the total number of symbols 14 included in the determined special time slot of the LTE system, and the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP are subtracted; if the CP type configured in the LTE system is an extended CP, the number of symbols occupied by the GP in the configured special time slot is greater than or equal to 1 (the determination process is described in step 703), the number of symbols occupied by the UpPTS in the configured special time slot is the total number of symbols included in the determined special time slot of the LTE system, and the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP are subtracted.

According to the above configuration relationship, when the LTE system is configured as the conventional CP, under the condition that the LTE system and the TD-SCDMA system coexist in adjacent frequency and guarantee mutual noninterference, the DwPTS in the special time slot in the LTE system can occupy 6 symbols at most, if the DwPTS occupies 6 symbols, 3 symbols are added to transmit a traffic channel, and the downlink occupies 33 symbols, after 3 symbols are added by modifying the existing standard, the system capacity gain is 3/33=9.1% (taking the case that three symbols do not transmit a traffic channel as an example).

When the LTE system is configured as the extended CP, under the condition that the LTE system and the TD-SCDMA system coexist in adjacent frequency and guarantee mutual noninterference, the DwPTS in the special time slot in the LTE system can occupy at most 5 symbols, if the DwPTS occupies 5 symbols, 2 symbols are added to transmit a traffic channel, and the downlink occupies 27 symbols, and after 2 symbols are added by modifying the existing standard, the system capacity gain is 2/27=7.4% (taking the case that three symbols do not transmit a traffic channel as an example).

Therefore, according to the above configuration, the system capacity gain may be between 7.4% and 9.1%.

The first embodiment of the present invention further provides a configuration scheme for improving system capacity and having a small modification to the existing standard on the basis of effectively implementing adjacent frequency coexistence of an LTE system and a TD-SCDMA system, which specifically includes the following steps:

according to the above determination process, for the above application scenario, that is, when the ratio of the uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and the ratio of the uplink and downlink service subframes configured by the LTE system is 1:3, the following configuration may be performed:

if the CP type configured in the LTE system is a normal CP, the following configuration is performed on three special timeslots:

DwPTS: GP: UpPTS is: 6:6: 2;

wherein, the proportion represents the proportion of the number of symbols occupied by the three special time slots.

If the CP type configured in the LTE system is an extended CP, the following configuration is performed on three special timeslots:

DwPTS: GP: UpPTS is: 5:5: 2;

According to the current protocol specification, there are 9 ways to match 3 special timeslots in a TD-LTE special subframe, as shown in the following table:

therefore, the above preferred scheme provided by the first embodiment of the present invention configures a special timeslot in an LTE system, and has the following advantages:

(1) and the adjacent frequency coexistence of the LTE system and the TD-SCDMA system is ensured.

(2) In the existing system, when the proportional relationship of the uplink and downlink service timeslots configured for the TD-SCDMA system is 2:4 or 2:5 and the proportional relationship of the uplink and downlink service subframes configured for the LTE system is 1:3, the proportional relationship of DwPTS, GP, and UpPTS is generally 3: 9: 2 or 3: 10: 1, it can be seen that, according to the technical solution provided by the preferred embodiment of the present invention, the DwPTS is configured into 6 symbols (or 5 symbols), and the added 3 symbols (or 2 symbols) can transmit traffic channels, thereby improving the system capacity.

(3) The existing standard is slightly modified, and as can be seen from the above table, in the proportional relationship of the special time slot in the LTE system defined by the existing standard, the number of symbols occupied by the UpPTS is 1 or 2, and the preferred scheme configures 2 symbols for the UpPTS, which can be modified slightly for the existing standard.

Example two

The embodiment of the device of the invention provides a configuration device of a special time slot in an LTE system, which corresponds to the flow of the configuration method of the special time slot in the LTE system provided by the first embodiment of the invention.

As shown in fig. 8, the apparatus for configuring a special timeslot in the LTE system mainly includes:

a first time determination unit 801, a second time determination unit 802, a maximum symbol number determination unit 803, and a configuration unit 804.

Wherein:

a first time determining unit 801, configured to determine, according to the number of uplink service timeslots in a TD-SCDMA system accessed by TD-SCDMA, a first total time occupied by the uplink service timeslots in the TD-SCDMA system, a guard interval GP in a special timeslot, and an uplink pilot timeslot UpPTS;

a second time determining unit 802, configured to determine, according to the number of uplink service subframes in a long term evolution LTE system, a second total time occupied by the uplink service subframes in the LTE system;

a maximum symbol number determining unit 803, configured to determine, according to the first total time determined by the first time determining unit 801, the second total time determined by the second time determining unit 802, and the time occupied by each symbol in the special timeslot of the LTE system, a maximum symbol number of a downlink pilot timeslot DwPTS in the special timeslot of the LTE system;

a configuring unit 804, configured to configure symbol numbers respectively occupied by the DwPTS, the GP, and the UpPTS in the special timeslot according to the maximum symbol number of the DwPTS determined by the maximum symbol number determining unit 803.

In a preferred embodiment of the present invention, the first time determining unit 801 included in the apparatus shown in fig. 8 is specifically configured to:

and determining the number of the uplink service time slots in the TD-SCDMA system according to the proportional relation of the uplink service time slots and the downlink service time slots configured in the TD-SCDMA system.

In a preferred embodiment of the present invention, the second time determining unit 802 included in the apparatus shown in fig. 8 is specifically configured to:

and determining the number of the uplink service subframes in the LTE system according to the proportional relation of the uplink service subframes and the downlink service subframes configured in the LTE system.

As shown in fig. 9, in a preferred embodiment of the present invention, the maximum symbol number determining unit 803 included in the apparatus shown in fig. 8 may include:

a first minimum symbol number determination module 803A and a first maximum symbol number determination module 803B;

wherein:

a first minimum symbol number determining module 803A, configured to obtain a minimum symbol number that is occupied by GP and UpPTS in the special time slot of the LTE system in total by dividing a time difference value obtained by subtracting the second total time from the first total time by a time occupied by each symbol in the special time slot of the LTE system;

a first maximum symbol number determining module 803B, configured to subtract the minimum symbol number from a total symbol number included in a special time slot of the LTE system when the minimum symbol number determined by the first minimum symbol number determining module 803A is a positive number, to obtain a maximum symbol number of the DwPTS in the special time slot; and the symbol number determining module is used for rounding up the minimum symbol number when the minimum symbol number determined by the first minimum symbol number determining module is a non-positive number, and subtracting the rounded-up minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot.

As shown in fig. 10, in another preferred embodiment of the present invention, the maximum symbol number determining unit 803 included in the apparatus shown in fig. 8 may include:

a first time difference value determining module 803C and a second maximum symbol number determining module 803D;

wherein:

a first time difference determining module 803C, configured to subtract the second total time from the first total time to obtain a first time difference; and a second time difference value obtained by subtracting the first time difference value from the total time occupied by the special time slot of the LTE system;

a second maximum symbol number determining module 803D, configured to divide the second time difference determined by the first time difference determining module 803C by the time occupied by each symbol in the special time slot of the LTE system to obtain the maximum symbol number occupied by the DwPTS in the special time slot of the LTE system, where if the maximum symbol number is a non-positive number, the maximum symbol number is dereferenced downward.

In another preferred embodiment of the present invention, as shown in fig. 11, the apparatus shown in fig. 9 includes a configuration unit 804, which may include:

a first total symbol number determining module 804A and a first configuring module 804B;

wherein:

a first total symbol number determining module 804A, configured to determine, according to a cyclic prefix CP type configured in the LTE system, a total symbol number included in a special time slot of the LTE system;

a first configuration module 804B, configured to configure that the number of symbols occupied by the DwPTS in the special timeslot is less than or equal to the determined maximum number of symbols of the DwPTS; configuring the number of symbols occupied by GP in the special time slot to be more than or equal to the minimum number of symbols occupied by GP, wherein the minimum number of symbols is an integer obtained by dividing the time occupied by GP by the time occupied by each symbol in the special time slot and rounding up; and configuring the number of symbols occupied by the UpPTS in the special time slot as the total number of symbols included in the special time slot of the LTE system determined by the first total symbol number determining module, and subtracting the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP.

As shown in fig. 12, in another preferred embodiment of the present invention, the apparatus shown in fig. 10 may also include the configuration unit 804 in fig. 11, that is, the first total symbol number determining module 804A and the first configuration module 804B are included.

As shown in fig. 13, in a preferred embodiment of the present invention, the maximum symbol number determining unit 803 included in the apparatus shown in fig. 8 may include:

a second minimum symbol number determination module 803E and a third maximum symbol number determination module 803F;

wherein:

a second minimum symbol number determining module 803E, configured to subtract 1000 μ s of the second total time from 1550 μ s of the first total time to obtain a time difference 550 μ s when a ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a ratio of uplink and downlink service subframes configured by the LTE system is 1:3, and to obtain a minimum symbol number 7.7 which is occupied by GP and UpPTS in a special time slot of the LTE system in total by dividing the time difference 550 μ s by a time occupied by each symbol in the special time slot of the LTE system when a CP type configured in the LTE system is a normal CP; when the CP type configured in the LTE system is an extended CP, dividing the time difference value 550 mu s by the time 83.4 mu s occupied by each symbol in the special time slot of the LTE system to obtain the minimum symbol number 6.6 totally occupied by GP and UpPTS in the special time slot of the LTE system;

a third maximum symbol number determining module 803F, configured to, when the CP type configured in the LTE system is a normal CP, subtract the rounded up minimum symbol number 8 determined by the second minimum symbol number determining module from the total symbol number 14 included in the special time slot of the LTE system to obtain a maximum symbol number 6 of the DwPTS in the special time slot; and when the CP type configured in the LTE system is an extended CP, subtracting the rounded minimum symbol number 7 determined by the second minimum symbol number determination module from the total symbol number 12 included in the special time slot of the LTE system to obtain the maximum symbol number 5 of the DwPTS in the special time slot.

As shown in fig. 14, in another preferred embodiment of the present invention, the maximum symbol number determining unit 803 included in the apparatus shown in fig. 8 may include:

a second time difference determination module 803G and a fourth maximum symbol number determination module 803H;

wherein:

a second time difference determining module 803G, configured to obtain a first time difference 550 μ s by subtracting the second total time 1000 μ s from the first total time 1550 μ s when a ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a ratio of uplink and downlink service subframes configured by the LTE system is 1:3, and obtain a second time difference 450 μ s by subtracting the first time difference 550 μ s from the total time 1000 μ s occupied by a special timeslot of the LTE system;

a fourth maximum symbol number determining module 803H, configured to determine that the CP type configured in the LTE system is a normal CP, divide the second time difference value 450 μ s determined by the second time difference value determining module by the time 71.4 μ s occupied by each symbol in the special time slot of the LTE system to obtain a maximum symbol number 6.3 occupied by the DwPTS in the special time slot of the LTE system, and round the maximum symbol number 6.3 downward to obtain 6; the CP type configured in the LTE system is an extended CP, the maximum symbol number 5.3 occupied by the DwPTS in the special time slot of the LTE system is obtained by dividing the second time difference value 450 μ s determined by the second time difference value determining module by the time 83.4 μ s occupied by each symbol in the special time slot of the LTE system, and the maximum symbol number 5.3 is rounded down to obtain 5.

In another preferred embodiment of the present invention, as shown in fig. 15, the apparatus shown in fig. 13 includes a configuration unit 804, which may include:

a second total symbol number determining module 804C and a second configuring module 804D;

wherein:

a second total symbol number determining module 804C, configured to determine that the total symbol number included in the special time slot of the TD-SCDMA system is 14 if the CP type configured in the LTE system is a normal CP when the proportional relationship between the uplink and downlink service time slots configured in the TD-SCDMA system is 2:4 or 2:5 and the proportional relationship between the uplink and downlink service subframes configured in the LTE system is 1: 3; if the CP type configured in the LTE system is an extended CP, determining that the total number of symbols included in the special time slot of the LTE system is 12;

a second configuration module 804D, configured to configure that, if the CP type configured in the LTE system is a normal CP, the number of symbols occupied by the DwPTS in the special time slot is less than or equal to 6, the number of symbols occupied by the GP in the special time slot is configured to be greater than or equal to 2, the number of symbols occupied by the UpPTS in the special time slot is configured to be the total number of symbols 14 included in the special time slot of the LTE system determined by the second total number of symbols determination module, and the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP are subtracted; and if the CP type configured in the LTE system is an extended CP, configuring the number of symbols occupied by the DwPTS in the special time slot to be less than or equal to 5, configuring the number of symbols occupied by the GP in the special time slot to be greater than or equal to 1, configuring the number of symbols occupied by the UpPTS in the special time slot to be the total number of symbols 12 included in the special time slot of the LTE system determined by the second total number of symbols determining module, and subtracting the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP.

In another preferred embodiment of the present invention, as shown in fig. 16, the apparatus shown in fig. 14 may also include the configuration unit 804 shown in fig. 15, that is, the second total symbol number determining module 804C and the second configuration module 804D are included.

In the preferred embodiment of the present invention, the second configuration module included in fig. 15 and 16 is specifically used for

When the CP type configured in the LTE system is a conventional CP, the number of symbols occupied by DwPTS, GP and UpPTS in the special time slot is configured to be 6:6: 2;

and when the CP type configured in the LTE system is an extended CP, configuring the number of symbols respectively occupied by the DwPTS, the GP and the UpPTS in the special time slot to be 5:5: 2.

It should be understood that the above configuration apparatus for a special timeslot in an LTE system includes only units that are logically divided according to functions implemented by the apparatus, and in practical applications, the above units may be overlapped or separated. The functions implemented by the configuration device for the special time slots in the LTE system provided in this embodiment correspond to the flows of the configuration method for the special time slots in the LTE system provided in the first embodiment one to one, and for the more detailed processing flows implemented by the configuration device, detailed descriptions are already given in the first embodiment, and detailed descriptions are omitted here.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for configuring special time slots in a long term evolution system is characterized by comprising the following steps:

determining the maximum symbol number of a downlink pilot time slot DwPTS in the special time slot of the LTE system according to the first total time, the second total time and the time occupied by each symbol in the special time slot of the LTE system, wherein the determining comprises the following steps: dividing the time difference obtained by subtracting the second total time from the first total time by the time occupied by each symbol in the special time slot of the LTE system to obtain the minimum number of symbols occupied by GP and UpPTS in the special time slot of the LTE system; if the minimum symbol number is a positive number, subtracting the minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot; if the minimum symbol number is a non-positive number, rounding up the minimum symbol number, and subtracting the rounded minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot;

or,

subtracting the second total time from the first total time to obtain a first time difference value; obtaining a second time difference value obtained by subtracting the first time difference value from the total time occupied by the special time slot of the LTE system, and dividing the second time difference value by the time occupied by each symbol in the special time slot of the LTE system to obtain the maximum symbol number occupied by the DwPTS in the special time slot of the LTE system, wherein if the maximum symbol number is a non-positive number, the maximum symbol number is taken down;

2. The method of claim 1, wherein the number of uplink traffic timeslots in the TD-SCDMA system is determined according to a proportional relationship between uplink and downlink traffic timeslots configured in the TD-SCDMA system.

3. The method of claim 1, wherein the number of uplink service subframes in the LTE system is determined according to a proportional relationship between uplink and downlink service subframes configured in the LTE system.

4. The method of claim 1, wherein configuring the number of symbols respectively occupied by the DwPTS, GP, and UpPTS in the special timeslot according to the determined maximum number of symbols of the DwPTS comprises:

determining the total number of symbols included in a special time slot of the LTE system according to the type of a Cyclic Prefix (CP) configured in the LTE system;

configuring the number of symbols occupied by the DwPTS in the special time slot to be less than or equal to the determined maximum number of symbols of the DwPTS;

configuring the number of symbols occupied by GP in the special time slot to be more than or equal to the minimum number of symbols occupied by GP, wherein the minimum number of symbols is an integer obtained by dividing the time occupied by GP by the time occupied by each symbol in the special time slot and rounding up;

and configuring the number of symbols occupied by the UpPTS in the special time slot as the total number of symbols included in the determined special time slot of the LTE system, and subtracting the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP.

5. The method of claim 1, wherein when a ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a ratio of uplink and downlink service subframes configured by the LTE system is 1:3, determining a maximum number of DwPTS in a special timeslot of the LTE system according to the first total time, the second total time and a time occupied by each symbol in the special timeslot of the LTE system comprises:

subtracting the second total time by 1000 mus from the first total time 1550 mus to obtain a time difference value of 550 mus;

if the CP type configured in the LTE system is a conventional CP, dividing the time difference value of 550 mu s by the time occupied by each symbol in the special time slot of the LTE system of 71.4 mu s to obtain the minimum symbol number 7.7 occupied by GP and UpPTS in the special time slot of the LTE system, and subtracting the rounded minimum symbol number 8 from the total symbol number 14 included in the special time slot of the LTE system to obtain the maximum symbol number 6 of the DwPTS in the special time slot;

if the CP type configured in the LTE system is an extended CP, the minimum symbol number 6.6 totally occupied by GP and UpPTS in the special time slot of the LTE system is obtained by dividing the time difference value 550 mu s by the time 83.4 mu s occupied by each symbol in the special time slot of the LTE system, and the maximum symbol number 5 of the DwPTS in the special time slot is obtained by subtracting the rounded minimum symbol number 7 from the total symbol number 12 included in the special time slot of the LTE system.

6. The method of claim 1, wherein when a ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a ratio of uplink and downlink service subframes configured by the LTE system is 1:3, determining a maximum number of DwPTS in a special timeslot of the LTE system according to the first total time, the second total time and a time occupied by each symbol in the special timeslot of the LTE system comprises:

if the CP type configured in the LTE system is a conventional CP, dividing the time occupied by each symbol in the special time slot of the LTE system by the second time difference value of 450 mu s to 71.4 mu s to obtain the maximum symbol number of 6.3 occupied by the DwPTS in the special time slot of the LTE system, and rounding the maximum symbol number of 6.3 to obtain 6;

if the CP type configured in the LTE system is an extended CP, dividing the time occupied by each symbol in the special time slot of the LTE system by the second time difference value of 450 mu s to 83.4 mu s to obtain the maximum symbol number of 5.3 occupied by the DwPTS in the special time slot of the LTE system, and rounding the maximum symbol number of 5.3 to obtain 5.

7. The method of claim 5 or 6, wherein when the ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and the ratio of uplink and downlink service subframes configured by the LTE system is 1:3, configuring the number of symbols respectively occupied by the DwPTS, the GP and the UpPTS in the special timeslot according to the determined maximum number of symbols of the DwPTS, comprises:

if the CP type configured in the LTE system is a conventional CP, configuring the number of symbols occupied by DwPTS in the special time slot to be less than or equal to 6, configuring the number of symbols occupied by GP in the special time slot to be more than or equal to 2, configuring the number of symbols occupied by UpPTS in the special time slot to be the total number of symbols 14 included in the determined special time slot of the LTE system, and subtracting the number of symbols occupied by DwPTS and the number of symbols occupied by GP;

if the CP type configured in the LTE system is an extended CP, the number of symbols occupied by DwPTS in the special time slot is configured to be less than or equal to 5, the number of symbols occupied by GP in the special time slot is configured to be greater than or equal to 1, the number of symbols occupied by UpPTS in the special time slot is configured to be 12 total symbols included in the determined special time slot of the LTE system, and the number of symbols occupied by DwPTS and the number of symbols occupied by GP are subtracted.

8. The method of claim 7,

if the CP type configured in the LTE system is a conventional CP, configuring the number of symbols respectively occupied by DwPTS, GP and UpPTS in the special time slot to be 6:6: 2;

and if the CP type configured in the LTE system is an extended CP, configuring the number of symbols respectively occupied by the DwPTS, the GP and the UpPTS in the special time slot to be 5:5: 2.

9. An apparatus for configuring a special timeslot in a long term evolution system, comprising:

a maximum symbol number determining unit, configured to determine a maximum symbol number of a downlink pilot time slot DwPTS in a special time slot of the LTE system according to the first total time determined by the first time determining unit, the second total time determined by the second time determining unit, and a time occupied by each symbol in the special time slot of the LTE system; wherein the maximum symbol number determination unit includes:

a first minimum symbol number determining module, configured to divide a time difference obtained by subtracting the second total time from the first total time by a time occupied by each symbol in a special time slot of the LTE system, to obtain a minimum symbol number occupied by GP and UpPTS in the special time slot of the LTE system;

a first maximum symbol number determining module, configured to subtract the minimum symbol number from a total symbol number included in a special time slot of the LTE system when the minimum symbol number determined by the first minimum symbol number determining module is a positive number, to obtain a maximum symbol number of the DwPTS in the special time slot; and the symbol number determining module is used for rounding up the minimum symbol number when the minimum symbol number determined by the first minimum symbol number determining module is a non-positive number, and subtracting the rounded up minimum symbol number from the total symbol number included in the special time slot of the LTE system to obtain the maximum symbol number of the DwPTS in the special time slot;

or,

the maximum symbol number determination unit includes:

a first time difference value determining module, configured to subtract the second total time from the first total time to obtain a first time difference value; and a second time difference value obtained by subtracting the first time difference value from the total time occupied by the special time slot of the LTE system;

a second maximum symbol number determining module, configured to divide the second time difference determined by the first time difference determining module by the time occupied by each symbol in the special time slot of the LTE system to obtain the maximum symbol number occupied by the DwPTS in the special time slot of the LTE system, where if the maximum symbol number is a non-positive number, the maximum symbol number is taken as a value downwards;

10. The apparatus of claim 9, wherein the first time determination unit is specifically configured to:

11. The apparatus of claim 9, wherein the second time determination unit is specifically configured to:

12. The apparatus of claim 9, wherein the configuration unit comprises:

a first total symbol number determining module, configured to determine, according to a cyclic prefix CP type configured in the LTE system, a total symbol number included in a special time slot of the LTE system;

a first configuration module, configured to configure that the number of symbols occupied by the DwPTS in the special timeslot is less than or equal to the determined maximum number of symbols of the DwPTS; configuring the number of symbols occupied by GP in the special time slot to be more than or equal to the minimum number of symbols occupied by GP, wherein the minimum number of symbols is an integer obtained by dividing the time occupied by GP by the time occupied by each symbol in the special time slot and rounding up; and configuring the number of symbols occupied by the UpPTS in the special time slot as the total number of symbols included in the special time slot of the LTE system determined by the first total symbol number determining module, and subtracting the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP.

13. The apparatus of claim 9, wherein the maximum symbol number determination unit comprises:

a second minimum symbol number determining module, configured to subtract the second total time by 1000 μ s from the first total time 1550 μ s to obtain a time difference value of 550 μ s when a proportional relationship between uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a proportional relationship between uplink and downlink service subframes configured by the LTE system is 1:3, and to divide the time difference value of 550 μ s by a time occupied by each symbol in a special timeslot of the LTE system by 71.4 μ s to obtain a minimum symbol number of 7.7 occupied by GP and UpPTS in the special timeslot of the LTE system when a CP type configured in the LTE system is a normal CP; when the CP type configured in the LTE system is an extended CP, dividing the time difference value 550 mu s by the time 83.4 mu s occupied by each symbol in the special time slot of the LTE system to obtain the minimum symbol number 6.6 totally occupied by GP and UpPTS in the special time slot of the LTE system;

a third maximum symbol number determining module, configured to, when the CP type configured in the LTE system is a normal CP, subtract the rounded up minimum symbol number 8 determined by the second minimum symbol number determining module from a total symbol number 14 included in a special time slot of the LTE system to obtain a maximum symbol number 6 of the DwPTS in the special time slot; and when the CP type configured in the LTE system is an extended CP, subtracting the rounded minimum symbol number 7 determined by the second minimum symbol number determination module from the total symbol number 12 included in the special time slot of the LTE system to obtain the maximum symbol number 5 of the DwPTS in the special time slot.

14. The apparatus of claim 9, wherein the maximum symbol number determination unit comprises:

a second time difference determining module, configured to obtain a first time difference 550 μ s by subtracting the second total time 1000 μ s from the first total time 1550 μ s when a ratio of uplink and downlink service timeslots configured by the TD-SCDMA system is 2:4 or 2:5 and a ratio of uplink and downlink service subframes configured by the LTE system is 1:3, and obtain a second time difference 450 μ s by subtracting the first time difference 550 μ s from the total time 1000 μ s occupied by a special timeslot of the LTE system;

a fourth maximum symbol number determining module, configured to divide the CP type configured in the LTE system by a normal CP, and divide a second time difference value 450 μ s determined by the second time difference value determining module by a time 71.4 μ s occupied by each symbol in a special time slot of the LTE system to obtain a maximum symbol number 6.3 occupied by a DwPTS in the special time slot of the LTE system, and round the maximum symbol number 6.3 downward to obtain 6; the CP type configured in the LTE system is an extended CP, the maximum symbol number 5.3 occupied by the DwPTS in the special time slot of the LTE system is obtained by dividing the second time difference value 450 μ s determined by the second time difference value determining module by the time 83.4 μ s occupied by each symbol in the special time slot of the LTE system, and the maximum symbol number 5.3 is rounded down to obtain 5.

15. The apparatus of claim 13 or 14, wherein the configuration unit comprises:

a second total symbol number determining module, configured to determine that the total symbol number included in the special time slot of the TD-SCDMA system is 14 if the CP type configured in the LTE system is a normal CP when the proportional relationship between the uplink and downlink service time slots configured in the TD-SCDMA system is 2:4 or 2:5 and the proportional relationship between the uplink and downlink service subframes configured in the LTE system is 1: 3; if the CP type configured in the LTE system is an extended CP, determining that the total number of symbols included in the special time slot of the LTE system is 12;

a second configuration module, configured to configure that, if the CP type configured in the LTE system is a normal CP, the number of symbols occupied by the DwPTS in the special time slot is less than or equal to 6, the number of symbols occupied by the GP in the special time slot is configured to be greater than or equal to 2, and the number of symbols occupied by the UpPTS in the special time slot is configured to be the total number of symbols 14 included in the special time slot of the LTE system determined by the second total number of symbols determination module, and the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP are subtracted; and if the CP type configured in the LTE system is an extended CP, configuring the number of symbols occupied by the DwPTS in the special time slot to be less than or equal to 5, configuring the number of symbols occupied by the GP in the special time slot to be greater than or equal to 1, configuring the number of symbols occupied by the UpPTS in the special time slot to be the total number of symbols 12 included in the special time slot of the LTE system determined by the second total number of symbols determining module, and subtracting the number of symbols occupied by the DwPTS and the number of symbols occupied by the GP.

16. The apparatus of claim 15, wherein the second configuration module is specifically configured to

When the CP type configured in the LTE system is a conventional CP, configuring the number of symbols respectively occupied by DwPTS, GP and UpPTS in the special time slot to be 6:6: 2;