WO2014044227A1

WO2014044227A1 - Base station and cross time slot interference coordinating method for common-mode base station

Info

Publication number: WO2014044227A1
Application number: PCT/CN2013/084110
Authority: WO
Inventors: 李廉; 袁海军
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-09-24
Filing date: 2013-09-24
Publication date: 2014-03-27
Also published as: CN103687014B; CN103687014A

Abstract

Disclosed are a base station and cross time slot interference coordinating method for common-mode base stations. Based on an LTE/TD-SCDMA common-mode base station, the present invention can uniformly configure an LTE system and a TD-SCDMA system in a special time slot, while taking the downlink throughput of the LTE system into consideration, and reducing the cross time slot interference to the TD-SCDMA system, thus optimizing system performance.

Description

TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular to a system and time division of a fourth generation mobile communication Long Term Evolution (LTE) system. A method for coordinating cross-slot interference and a base station for a common mode base station under the condition of a hybrid network division of a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. BACKGROUND OF THE INVENTION Time Division Duplex (TDD) is a technology for distinguishing wireless channels and continuing uplink operations in a downlink operation of a frame period, and is also one of duplex technologies used in mobile communication technologies. Corresponds to Frequency Division Duplexing (FDD). As shown in FIG. 1 , it is a TDD mode frame structure in an LTE system, and a 10 ms radio frame includes two fields, each of which is 5 ms in length, each field includes 5 subframes, and the length is lms, which can be divided into 5 ms. There are two types of cycles and 10ms cycles. For TDD, the uplink and downlink are separated in time, and the uplink and downlink carrier frequencies are the same, that is, in every 10 ms period, a total of 10 subframes are available for uplink and downlink, and each subframe can be used for uplink or downlink. In the case of LTE and TD-SCDMA hybrid networking, the TDD mode frame in the LTE system usually uses a 5 ms period. Referring to Figure 1, in the 5 ms periodic configuration, subframe 1 and subframe 6 are fixedly configured as special subframes. Each of the special subframes consists of a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), and an Uplink Pilot Time Slot (UpPTS). The special time slot is formed. The configuration table of the special subframe is shown in Table 1. Table 1. LTE special subframe configuration table (unit: symbol)

Special sub-conventional CP extended CP

Frame Configuration DwPTS GP UpPTS DwPTS GP UpPTS

0 3 10 3 8

1 9 4 8 3

1

2 10 3 1 9 2

3 11 2 10 1

4 12 1 3 7 2 6 8 3 9 1

2

7 10 2 - - -

8 11 1 - - - As shown in Figure 2, the frame structure length of TD-SCDMA is 10ms, which is also divided into two 5ms subframes. Each subframe is divided into 7 regular slots of 675us length and 1 special time. Gap: Downlink pilot time slot DwPTS, guard period GP, and uplink pilot time slot UpPTS. In addition, in the conventional time slot, except that the time slot 0 must be used in the downlink direction, the time slot 1 must be used in the uplink direction, and the direction of other regular time slots may be changed. In the case of LTE and TD-SCDMA hybrid networking, if there is time-sharing long-term evolution (Time Division

Long Term Evolution (TD-LTE) downlink time slot is synchronized with TD-SCDMA uplink time slot in time, which will cause strong interference in TD-SCDMA uplink time slot and affect TD-SCDMA uplink time slot reception performance. As shown in FIG. 3, it discloses a description of uplink and downlink cross-slot interference of TD-LTE and TD-SCDMA in the case of LTE and TD-SCDMA hybrid networking. Therefore, in the actual implementation process, in order to avoid the uplink and downlink cross-slot interference of TD-LTE and TD-SCDMA, it is necessary to do -

1. Ensure that the transition points of the two systems from uplink to downlink are synchronized;

2. The special subframe configuration of LTE enables the GP time segment of TD-SCDMA to be within the GP time period of LTE. If the above restrictions are violated, cross-slot interference will occur between LTE and TD-SCDMA. The LTE downlink pilot time slot DwPTS will affect the uplink pilot time slot UpPTS and uplink regular time slot of TD-SCDMA, resulting in TD-SCDMA. The system uplink pilot channel (Uplink Pilot Channel, referred to as UpPCH) and the uplink dedicated physical channel (DPTC) or the physical uplink shared channel (PUSCH) demodulation error, thus affecting the connection Incoming, switching, uplink rate and many other network key indicators. Based on the above constraint 1, in the LTE and TD-SCDMA hybrid networking, the combination of uplink and downlink time slot ratios is as follows: LTE is slot configuration 1, TD-SCDMA uplink and downlink slot ratio is 3:3; LTE is Time slot configuration 2, the ratio of uplink and downlink time slots of TD-SCDMA is 2:4. In addition, in the downlink transmission, in order to avoid interference between symbols caused by multipath effects, a loop is added before each Orthogonal Frequency Division Multiplexing (OFDM). The prefix (Cyclic Prefix, CP for short), according to the duration, CP can be divided into regular CP and extension

For the regular CP, based on the above restriction condition 2, the special subframe configuration of the LTE in the slot configuration 1 is not limited. In the slot configuration 2, the special subframe configuration is limited to 0 or 5. For the extended CP, based on the above restriction condition 2, the special subframe configuration of the LTE in the slot configuration 1 is not limited, and in the slot configuration 2, the special subframe configuration is limited to 0 or 4. The number of symbols occupied by the GP area of the special subframe configuration 5 is 9. If the number of symbols occupied by the physical downlink control channel (PDCCH) is 3, the special subframe cannot be scheduled to be downlink. The service, the downlink throughput loss under the ratio 2 is about 25%. SUMMARY OF THE INVENTION In order to simultaneously consider the downlink throughput of the LTE system and reduce the cross-slot interference to the TD-SCDMA system, based on the LTE/TD-SCDMA common mode base station, the LTE and TD-SCDMA systems are coordinated in a special time slot. The purpose of the embodiments of the present invention is to provide a cross-slot interference coordination method and a base station for a common mode base station. In order to achieve the purpose of the embodiments of the present invention, the embodiments of the present invention are implemented by using the following technical solutions: In one aspect, a method for coordinating cross-slot interference for a common mode base station according to an embodiment of the present invention includes: When the evolved LTE side needs to schedule the downlink special time slot, the LTE side acquires the current upper and lower time slot configuration, the special subframe configuration, and the time division synchronous code division multiple access TD-SCDMA side uplink and downlink configuration; when the base station detects the IJ TD-SCDMA side needs to be allocated. When the uplink time slot is 1, the TD-SCDMA side acquires the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration; when the TD-SCDMA side time slot configuration is 2:4, and the LTE side time slot configuration is When the configuration 2 and the LTE side special subframe are configured as non-configuration 0 or 5, the TD-SCDMA side sends a special time slot prohibition scheduling indication to the LTE side, and the LTE side sends a special time slot scheduling indication to the TD-SCDMA side; when TD-SCDMA After receiving the special time slot scheduling indication sent by the LTE side, the side blocks the uplink time slot 1, prohibits the allocation of the dedicated physical channel DPCH on the time slot 1, and does not authorize the physical uplink shared channel PUSCH resource on the time slot 1. The time slot migration is performed on the user that has been allocated on the time slot 1, and the timer 1 is started. When the LTE side receives the special time slot prohibition scheduling indication sent by the TD-SCDMA side, the service scheduling is stopped on the special subframe. , and start timer 2. Preferably, the method for coordinating the cross-slot interference for the common mode base station further includes - before performing all the steps -

The LTE side sets the scheduling priority of the special subframe to the lowest in the downlink direction, and sets the allocation priority of the slot 1 to the lowest in the uplink direction on the TD-SCDMA side. The LTE side performs the core network data according to the user plane of the base station. For the downlink physical resource allocation, the regular subframe is preferentially allocated, and the TD-SCDMA side preferentially allocates the uplink resource of the non-slot 1 when the uplink resource is allocated. Preferably, after performing the special time slot scheduling indication sent by the LTE side on the TD-SCDMA side, the uplink time slot 1 is blocked, the dedicated physical channel DPCH is prohibited from being allocated on the time slot 1, and the physical uplink on the time slot 1 is not performed. The shared channel PUSCH resource is authorized, and the time slot migration is performed on the user that has been allocated on the time slot 1, and the timer 1 is started; when the LTE side receives the special time slot prohibition scheduling instruction sent by the TD-SCDMA side, the STOP is stopped. After performing the service scheduling on the special subframe and starting the timer 2" step, the method for coordinating the cross-slot interference for the common mode base station further includes:

The TD-SCDMA side relocates the uplink pilot time slot UpPTS according to the special time slot scheduling indication sent by the LTE side, and reconfigures the PRACH (Physical Random Access Channel) to migrate the uplink channel to be migrated. To any position after the 448 chip chip of TS1. Preferably, after performing the foregoing steps, the cross-slot interference coordination method for the common mode base station further includes: after the timer 1 times out, the TD-SCDMA side recovers the uplink time slot 1 and allocates on the time slot 1 The DPCH, and the PUSCH on time slot 1 are authorized. Preferably, after performing the foregoing steps, the cross-slot interference coordination method for the common mode base station further includes: after the timer 2 times out, the LTE side resumes scheduling on the special subframe. On the other hand, a common mode base station provided by the embodiment of the present invention includes:

On the LTE side, when it is detected that the downlink special time slot needs to be scheduled, the current uplink and downlink time slot configuration, the special subframe configuration, the time division synchronous code division multiple access TD-SCDMA side uplink and downlink configuration, and the TD-SCDMA side are further set. When the time slot is configured to be 2:4, and the LTE side time slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the special time slot scheduling indication is sent to the TD-SCDMA side; and further configured to be After receiving the special time slot prohibition scheduling indication sent by the TD-SCDMA side, stopping the service scheduling on the special subframe, and starting the timer 2;

The TD-SCDMA side is configured to acquire the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration when detecting that the uplink time slot 1 needs to be allocated; further configured to configure the TD-SCDMA side time slot as 2:4, when the LTE side slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the special slot prohibition scheduling indication is sent to the LTE side, and the LTE side sends the special time slot to the TD-SCDMA side. And the scheduling indicator is further configured to: after receiving the special time slot scheduling indication sent by the LTE side, block the uplink time slot 1, prohibit the allocation of the dedicated physical channel DPCH on the time slot 1, and not the physical uplink shared channel PUSCH on the time slot 1 The resource is authorized, and time slot migration is performed for the users already allocated on time slot 1, and timer 1 is started. Preferably, the LTE side is further configured to set a scheduling priority of the special subframe to the lowest in the downlink direction, and perform downlink physical resource allocation according to the core network data received by the user plane of the base station, and preferentially allocate the regular subframe;

The TD-SCDMA side is further configured to set the allocation priority of the slot 1 to the lowest in the uplink direction and the uplink resource of the non-slot 1 when the uplink resource is allocated. Preferably, the TD-SCDMA side is further configured to migrate the uplink pilot time slot UpPTS position according to the special time slot scheduling indication sent by the LTE side, and reconfigure the physical random access channel PRACH, and migrate the uplink channel to be migrated. To any position after the 448 chip chip of TS1. Preferably, the TD-SCDMA side is further configured to resume the uplink time slot 1 after the timer 1 times out, allocate the DPCH on the time slot 1, and authorize the PUSCH on the time slot 1. Preferably, the LTE side is further configured to resume scheduling on the special subframe after the timer 2 times out. The cross-slot interference coordination method and the base station of the common mode base station provided by the embodiment of the present invention can simultaneously consider the downlink throughput of the LTE system and reduce the crossover to the TD-SCDMA system. Time slot interference. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram of a TDD mode frame structure in an LTE system in the related art; FIG. 2 is a schematic diagram of a TD-SCDMA subframe structure in the related art; FIG. 3 is a TD- in a dual mode base station in the related art. Schematic diagram of uplink and downlink cross-slot interference of LTE and TD-SCDMA; 4 is a schematic diagram of a flow of a method for coordinating cross-slot interference for a common mode base station according to Embodiment 1 of the present invention; FIG. 5 is a flowchart of a method for coordinating a cross-slot interference for a common mode base station according to Embodiment 2 of the present invention; schematic diagram. The realization, functional features and excellent effects of the object of the present invention will be further described below in conjunction with the specific embodiments and the accompanying drawings. The technical solutions of the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can understand the present invention and can be practiced, but the embodiments are not Limitation of the invention. A cross-slot interference coordination method for a common mode base station according to an embodiment of the present invention includes the following specific steps: Step S100: The LTE side sets the scheduling priority of the special subframe to the lowest in the downlink direction, and the TD-SCDMA side The allocation priority of the time slot 1 is set to the lowest in the uplink direction. Step S101: The LTE side performs downlink physical resource allocation according to the core network data received by the user plane of the base station, and preferentially allocates the regular subframe, and the TD-SCDMA side allocates the uplink. When the resource is allocated, the uplink resource of the non-slot 1 is preferentially allocated. Step S102: When the base station detects that the LTE side needs to schedule the downlink special time slot, the LTE side acquires the current uplink and downlink time slot configuration, and configures the special subframe configuration and the time synchronization code. TD-SCDMA side uplink and downlink configuration; when the eNB detects that the TD-SCDMA side needs to allocate the uplink time slot 1, the TD-SCDMA side acquires the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration; S103. When the TD-SCDMA side slot is configured to be 2:4, and the LTE side slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the TD-SCDMA side LTE The side sends a special time slot prohibition scheduling indication, and the LTE side sends a special time slot scheduling indication to the TD-SCDMA side. Step S104: After receiving the special time slot scheduling indication sent by the LTE side, the TD-SCDMA side blocks the uplink time slot 1 It is forbidden to allocate the dedicated physical channel DPCH on time slot 1, not to authorize the physical uplink shared channel PUSCH resource on time slot 1, and perform time slot migration for the user already allocated on time slot 1, and start timer 1; After receiving the special time slot prohibition scheduling indication sent by the TD-SCDMA side, the LTE side stops performing service scheduling on the special subframe, and starts the timer 2; Step S105: The TD-SCDMA side migrates the uplink pilot time slot UpPTS position according to the special time slot scheduling indication sent by the LTE side, and reconfigures the physical random access channel PRACH, and migrates the uplink channel to be migrated to the TS1. Any position after 448 chips chip; Step S106, after the timer 1 times out, the TD-SCDMA side recovers the uplink time slot 1, and allocates the DPCH on the time slot 1, and authorizes the PUSCH on the time slot 1; Step S107: After the timer 2 expires, the LTE side resumes scheduling on the special subframe. In addition, an embodiment of the present invention further provides a common mode base station, including:

On the LTE side, when it is detected that the downlink special time slot needs to be scheduled, the current uplink and downlink time slot configuration, the special subframe configuration, the time division synchronous code division multiple access TD-SCDMA side uplink and downlink configuration, and the TD-SCDMA side are further set. When the time slot is configured to be 2:4, and the LTE side time slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the special time slot scheduling indication is sent to the TD-SCDMA side; and further set to receive After the special time slot sent by the TD-SCDMA side prohibits the scheduling indication, the service scheduling is stopped on the special subframe, and the timer 2 is started;

The TD-SCDMA side is configured to acquire the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration when detecting that the uplink time slot 1 needs to be allocated; further configured to configure the TD-SCDMA side time slot as 2:4, when the LTE side slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the special slot prohibition scheduling indication is sent to the LTE side, and the LTE side sends the special time slot to the TD-SCDMA side. And the scheduling indicator is further configured to: after receiving the special time slot scheduling indication sent by the LTE side, block the uplink time slot 1, prohibit the allocation of the dedicated physical channel DPCH on the time slot 1, and not the physical uplink shared channel PUSCH on the time slot 1 The resource is authorized, and time slot migration is performed for the users already allocated on time slot 1, and timer 1 is started. Specifically, the LTE side is further configured to set a scheduling priority of the special subframe to the lowest in the downlink direction, and perform downlink physical resource allocation according to the core network data received by the user plane of the base station, and preferentially allocate the regular subframe; The TD-SCDMA side is further configured to set the allocation priority of the slot 1 to the lowest in the uplink direction and to allocate the uplink resource of the non-slot 1 preferentially when allocating the uplink resource. The TD-SCDMA side is further configured to allocate an uplink pilot time slot according to a special time slot scheduling indication sent by the LTE side.

The UpPTS location is migrated, and the physical random access channel PRACH is reconfigured to migrate the uplink channel to be migrated to any position after the 448th chip chip of TS1.

The TD-SCDMA side is also configured to resume uplink time slot 1 after timer 1 times out, allocate DPCH on time slot 1, and authorize PUSCH on time slot 1. The LTE side is also configured to resume scheduling on the special subframe after the timer 2 times out. The implementation process of the cross-slot interference coordination method in the case where the dual-mode base station LTE and TD-SCDMA coexist in the embodiment of the present invention will be described in detail below with reference to FIG. 4 and FIG. Embodiment 1 Referring to FIG. 4, it is assumed that the TD-SCDMA time slot ratio is 2:4, the TD-LTE uplink and downlink time slot is configured as the ratio 2, and the terminal capability type is the capability 3. The first step: the dual-mode base station LTE side system scheduler sets the scheduling priority of the special subframe to the lowest in advance, that is, when scheduling the downlink data of the user plane from the core network, the regular subframe is preferentially scheduled, and there is no conventional subframe. After the available resources, the special subframe 1/6 is scheduled; the base station side downlink needs to allocate a downlink service of 10 Mbps, and the base station scheduler only schedules downlink data in the downlink normal 0, 3, 4, 5, 8, and 9 subframes; Step: When the base station side needs to allocate a downlink service of 80 Mbps, the maximum downlink throughput that can be provided by the regular time slots of 0, 3, 4, 5, 8, and 9 is 59.7 Mbps, and the LTE side system of the dual-mode base station needs to be judged at The downlink data is scheduled on the special subframe 1/6; the third step: the dual-mode base station accesses the database to obtain the current uplink and downlink time slot configuration, the special subframe ratio, and the TD-SCDMA time slot configuration of the LTE side of the base station, and the current uplink and downlink The time slot is configured as configuration 2, the special subframe is configured as configuration 7, and the TD-SCDMA time slot is configured as 2:4; the fourth step: the dual-mode base station LTE side system sends a special subframe scheduling indication to the TD-SCDMA side system "Special Sub-Frame A The TD-SCDMA side needs to perform the corresponding cross-slot. The llocation indicator indicates that the cell is instructed by the software interface or the X2 interface to notify all relevant cells in the neighboring cell of the cell, indicating that the LTE system side is currently scheduling a special subframe, and the TD-SCDMA side needs to perform the corresponding cross-slot. Interference coordination and evasive measures; Step 5: All TD-SCDMA cells that receive the special sub-frame Allocation Indicator indicate that the uplink TS1 is masked. The uplink TS1 is blocked by the software, that is, in the cell where the TS1 is blocked, the uplink TS1 cannot be allocated to the user, and the user of the DPCH allocated on the TS1 is migrated to other uplink time slots, and the uplink grant of the PUSCH of the TS1 is not performed; Sixth: All the special sub-frame scheduling instructions "Special Sub-Frame Allocation Indicator" are received.

The TD-SCDMA cell sends an uplink channel migration indication "Uplink Channel Shift Indicator" to the radio network controller (Radio Network Controller, RNC for short), instructing the RNC to initiate an UpPCH and PRACH migration operation, and the target location of the migration is the 448th chip of the TS1. Any position after that; Step 7: After the timer expires, the TD-SCDMA side system software queries whether the TD-LTE side is occupying a special subframe through the software interface. If it is not occupied, the allocation to TS1 is resumed. Otherwise, the allocation of TS1 is continuously prohibited. Embodiment 2: Referring to FIG. 5, it is assumed that the TD-SCDMA time slot ratio is 2:4, the TD-LTE uplink and downlink time slot is configured as the ratio 2, and the terminal capability type is the capability 3. The first step: the dual-mode base station TD-SCDMA system side uplink time slot 2 physical resources have been occupied by an uplink service 128Kbps user, at this time access to a user, the uplink request rate is also 128Kbps, need to allocate uplink time slot 1 The second step: The dual-mode base station TD-SCDMA system software obtains the current uplink and downlink time slot configuration, special subframe ratio and TD-SCDMA time slot configuration of the LTE side of the base station by accessing the database, and the current uplink and downlink time slot configuration is configured. 2. The special subframe configuration is configuration 7. The TD-SCDMA time slot configuration is 2:4. The third step: the dual-mode base station TD-SCDMA system software system sends a special subframe prohibition scheduling indication to the TD-LTE side system. -Frame Disable Indicator", indicating that the cell special subframe is prohibited from scheduling; Step 4: The LTE side software receives the special subframe prohibition scheduling indication "Special Sub-Frame Disable

After the indicator, the corresponding interface of the neighboring cell of the cell is notified through the software interface or the X2 port, indicating that the TD-SCDMA system is allocated the uplink time slot 1 at this time, and the LTE side needs to circumvent the TD-SCDMA by prohibiting the allocation of the special subframe. The side uplink is interfered by the cross-slot; the fifth step: During the LTE special subframe-disabled allocation, a user with a capability level of 3 needs to initiate 80 Mbps service in the cell with the restricted subframe, because the special subframe scheduling is restricted. Therefore, the actual can only reach 59.7 Mbps; Step 6: TD-LTE periodically queries whether the TS1 of the TD-SCDMA side is occupied by the software interface, and if it is occupied, it prohibits scheduling the special subframe until the TD-SCDMA side releases the TS1 physics. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are used directly or indirectly. The related technical fields are all included in the scope of patent protection of the present invention. Industrial Applicability The technical solution of the embodiments of the present invention can be applied to the fourth generation communication technology field, which ensures the downlink throughput of the LTE system and reduces the cross-slot interference to the TD-SCDMA system.

Claims

A method for coordinating a cross-slot interference coordination for a common mode base station, comprising:

When the base station detects that the LTE side needs to schedule the downlink special time slot, the LTE side acquires the current upper and lower time slot configuration, the special subframe configuration, and the time division synchronous code division multiple access TD-SCDMA side uplink and downlink configuration; when the base station detects the TD- When the SCDMA side needs to allocate the uplink time slot 1, the TD-SCDMA side acquires the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration;

When the TD-SCDMA side slot is configured to be 2:4, and the LTE side slot is configured as configuration 2 and the LTE side special subframe is configured as non-configuration 0 or 5, the TD-SCDMA side sends a special slot prohibition scheduling to the LTE side. Instructing, the LTE side sends a special time slot scheduling indication to the TD-SCDMA side;

After receiving the special time slot scheduling indication sent by the LTE side, the TD-SCDMA side blocks the uplink time slot 1, prohibits the allocation of the dedicated physical channel DPCH on the time slot 1, and does not authorize the physical uplink shared channel PUSCH resource on the time slot 1. And performing time slot migration for the user that has been allocated on the time slot 1 and starting the timer 1; when the LTE side receives the special time slot prohibition scheduling indication sent by the TD-SCDMA side, the service is stopped on the special subframe. Schedule, and start timer 2. The cross-slot interference coordination method for a common mode base station according to claim 1, wherein, before performing all the steps, the method further includes:

The LTE side sets the scheduling priority of the special subframe to the lowest in the downlink direction, and sets the allocation priority of the slot 1 to the lowest in the uplink direction on the TD-SCDMA side;

The LTE side performs downlink physical resource allocation according to the core network data received by the user plane of the base station, and preferentially allocates the regular subframe. The TD-SCDMA side preferentially allocates the uplink resource of the non-slot 1 when the uplink resource is allocated. The cross-slot interference coordination method for a common mode base station according to claim 1, wherein after performing all the steps, the method further includes:

The TD-SCDMA side migrates the UpPTS position of the uplink pilot time slot according to the special time slot scheduling indication sent by the LTE side, and reconfigures the physical random access channel PRACH, and migrates the uplink channel to be migrated to the 448th code of the TS1. Any position after the chip. The cross-slot interference coordination method for a common mode base station according to claim 3, wherein after performing the step, the method further includes: When the timer 1 times out, the TD-SCDMA side recovers the uplink time slot 1, and allocates the DPCH on the time slot 1, and authorizes the PUSCH on the time slot 1. The cross-slot interference coordination method for a common mode base station according to claim 4, wherein after performing the step, the method further includes:

After the timer 2 times out, the LTE side resumes scheduling on the special subframe. , a common mode base station, including -

On the LTE side, when it is detected that the downlink special time slot needs to be scheduled, the current uplink and downlink time slot configuration, the special subframe configuration, the time division synchronous code division multiple access TD-SCDMA side uplink and downlink configuration, and the TD-SCDMA side are further set. When the time slot is configured to be 2:4, and the LTE side time slot is configured as configuration 2 and the LTE side special subframe is configured as non-configuration 0 or 5, the special time slot scheduling indication is sent to the TD-SCDMA side; and further set to receive After the special time slot sent by the TD-SCDMA side prohibits the scheduling indication, the service scheduling is stopped on the special subframe, and the timer 2 is started;

The TD-SCDMA side is configured to acquire the current uplink and downlink time slot configuration, and the LTE side uplink and downlink configuration and its special subframe configuration when detecting that the uplink time slot 1 needs to be allocated; further configured to configure the TD-SCDMA side time slot as 2:4, when the LTE side slot is configured as the configuration 2 and the LTE side special subframe is configured as the non-configuration 0 or 5, the special slot prohibition scheduling indication is sent to the LTE side, and the LTE side sends the special time slot to the TD-SCDMA side. And the scheduling indicator is further configured to: after receiving the special time slot scheduling indication sent by the LTE side, block the uplink time slot 1, prohibit the allocation of the dedicated physical channel DPCH on the time slot 1, and not the physical uplink shared channel PUSCH on the time slot 1 The resource is authorized, and time slot migration is performed for the users already allocated on time slot 1, and timer 1 is started. The common mode base station according to claim 6, wherein

The LTE side is further configured to set a scheduling priority of the special subframe to a minimum in the downlink direction, and perform downlink physical resource allocation according to the core network data received by the user plane of the base station, and preferentially allocate the regular subframe;

The TD-SCDMA side is also set to set the allocation priority of the slot 1 to the lowest in the uplink direction and the uplink resource of the non-slot 1 when the uplink resource is allocated. The common mode base station according to claim 6, wherein

The TD-SCDMA side is further configured to migrate the UpPTS position of the uplink pilot time slot according to the special time slot scheduling indication sent by the LTE side, and reconfigure the physical random access channel PRACH, and migrate the uplink channel to be migrated to the TS1. Any position after 448 chips chip. The common mode base station according to claim 8, wherein

The TD-SCDMA side is also set to resume uplink time slot 1 after timer 1 times out, allocate DPCH on time slot 1, and authorize PUSCH on time slot 1. The common mode base station according to claim 9, wherein

The LTE side is also configured to resume scheduling on the special subframe after the timer 2 times out.