CN105874836B - Method, device and system for controlling information processing - Google Patents

Abstract

the invention discloses a method, a device and a system for processing control information.

Description

Method, device and system for controlling information processing

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a system for controlling information processing.

Background

In a Long Term Evolution (LTE) system or an LTE subsequent Evolution system, a Physical Downlink Control Channel (PDCCH) carries information such as scheduling and Control of User Equipment (UE). The resource allocation of the PDCCH is performed with a Control Channel Element (CCE) as a granularity. One CCE is composed of 9 Resource Element Groups (REGs), and one REG is composed of 4 or 6 adjacent Resource Elements (REs) located on the same Orthogonal Frequency Division Multiplexing (OFDM) symbol, but the available number of REs is only 4, and the REG composed of 6 REs contains two Reference Signals (RS), and the REs occupied by the RS cannot be used by the REGs of the control channel.

The LTE system supports 4 different types of PDCCHs, and the number of CCEs contained in each PDCCH is 1, 2, 4 and 8 respectively. The number of CCEs used for PDCCH transmission, which may also be referred to as PDCCH aggregation level, is determined by an Evolved NodeB (eNodeB) according to the channel condition of the UE. For a UE with a better channel environment, the eNodeB may select a PDCCH with aggregation level 1, and for a UE with a poorer channel environment, the eNodeB may need to select a PDCCH with aggregation level 8 to ensure that the UE correctly demodulates the PDCCH. The UE searches for and blindly detects DCI information on a plurality of possible PDCCH channels, which are referred to as PDCCH candidate channels of the UE.

With the change of networks and the popularization of intelligent terminals, an operator may reuse frequency resources by using a spectrum sharing technology, and share a spectrum originally used in a Global System for Mobile Communication (GSM), a Universal Mobile Telecommunications System (UMTS), a Code Division Multiple Access (CDMA), a World Interoperability for Microwave Access (WIMAX), a television or a broadcast network, for example, the operator may gradually release a spectrum of a GSM network for use by an LTE network, and fully utilize an empty spectrum when GSM traffic is idle by spectrum sharing, thereby improving a spectrum resource utilization rate and satisfying a large bandwidth requirement of LTE, and improving LTE competitiveness.

When the PDCCH is interfered, in order to ensure that the UE correctly demodulates the PDCCH, the eNodeB selects the PDCCH with higher aggregation level to transmit control information. However, the selection of the PDCCH with a higher aggregation level may reduce the system capacity, and meanwhile, when the interference is large, if the demodulation performance of the PDCCH cannot be satisfied after the aggregation level is selected to be the maximum, the coverage performance of the PDCCH may be reduced. When the frequency spectrum is shared, the PDCCH is inevitably interfered by a different system network, and the capacity or the coverage of the PDCCH is reduced.

disclosure of Invention

the embodiment of the invention provides a method, a device and a system for controlling information processing, which solve the problem of capacity or coverage of a PDCCH during interference.

the embodiment of the invention can be realized by the following technical scheme:

In a first aspect, an embodiment of the present invention provides a method for controlling information processing, where the method includes: an evolution base station eNodeB acquires interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a long term evolution LTE and used by the LTE; the eNodeB selects a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, wherein a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE; the eNodeB transmits the DCI to the UE.

with reference to the first aspect, in a first possible implementation manner, the acquiring, by the eNodeB, interference information suffered by a shared spectrum includes: and the eNodeB acquires the interference information suffered by the shared spectrum through a coordination controller.

With reference to the first aspect, in a second possible implementation manner, the selecting, by the eNodeB, a PDCCH candidate channel for the UE according to the interference information includes: the eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG; and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set.

With reference to the first aspect, in a third possible implementation manner, the selecting, by the eNodeB, a PDCCH candidate channel for the UE according to the interference information includes: the eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG; the eNodeB calculates the average SINR of each interfered REG in the REG set; and the eNodeB selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

in a second aspect, an embodiment of the present invention provides a base station, where the base station includes: the network interface unit is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; a processing unit, configured to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface unit, where a Control Channel Element (CCE) in the PDCCH candidate channel carries Downlink Control Information (DCI) of the UE; a transceiving unit, configured to transmit the DCI to the UE.

With reference to the second aspect, in a first possible implementation manner, the network interface unit is configured to acquire interference information suffered by a shared spectrum, and includes: the method is used for acquiring the interference information suffered by the shared spectrum through a coordination controller.

with reference to the second aspect, in a second possible implementation manner, the selecting, by the processing unit, a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit includes: the REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG; for selecting the PDCCH candidate channel for the UE according to the REG set.

with reference to the second aspect, in a third possible implementation manner, the selecting, by the processing unit, a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit includes: the REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG; for calculating an average SINR of each interfered REG in the REG set; for selecting the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

In a third aspect, an embodiment of the present invention provides a base station, including: the network interface is used for acquiring interference information suffered by a shared spectrum, and the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; a processor, configured to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface unit, where a Control Channel Element (CCE) in the PDCCH candidate channel carries Downlink Control Information (DCI) of the UE; a transceiver to transmit the DCI to the UE.

in a fourth aspect, an embodiment of the present invention provides a method for controlling information processing, where the method includes: the method comprises the steps that a coordination controller obtains interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; and the coordination controller sends the interference information to an evolution base station eNodeB of the LTE, the interference information is used for the eNodeB to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE, and the DCI is sent to the UE by the eNodeB.

With reference to the fourth aspect, in a first possible implementation manner, when the LTE-different network is a global system for mobile communications GSM, the acquiring, by the coordination controller, interference information on a shared spectrum includes: the coordination controller receives cell information sent by the eNodeB; the coordination controller receives a measurement report sent by a Base Station Controller (BSC); and the coordination controller calculates the interference information suffered by the shared spectrum according to the cell information and the measurement report.

with reference to the fourth aspect and the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the interference information includes: a signal to interference plus noise ratio, SINR, value of interference on each resource block, RB, of the shared spectrum.

In a fifth aspect, an embodiment of the present invention provides a coordination controller, where the coordination controller includes: the processing unit is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; and the network interface unit is used for sending the interference information acquired by the processing unit to an evolution base station eNodeB of the LTE, the interference information is used for the eNodeB to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE, and the DCI is sent to the UE by the eNodeB.

With reference to the fifth aspect, in a first possible implementation manner, when the LTE-different network is a global system for mobile communications GSM, the processing unit is configured to acquire interference information received by a shared spectrum, and the method includes: the network interface unit is configured to receive cell information sent by the eNodeB; the network interface unit is also used for receiving a measurement report sent by a base station controller BSC; the processing unit is configured to calculate interference information suffered by the shared spectrum according to the cell information received by the network interface unit and the measurement report received by the network interface unit.

With reference to the fifth aspect and the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the processing unit is configured to acquire interference information suffered by a shared spectrum, and includes: and the method is used for acquiring the SINR value of the interference on each resource block RB of the shared spectrum.

in a sixth aspect, an embodiment of the present invention provides a coordination controller, where the coordination controller includes: the processor is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) to the LTE; and the network interface is used for sending the interference information to an evolution base station eNodeB of the LTE, the interference information is used for the eNodeB to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE, and the DCI is sent to the UE by the eNodeB.

According to the embodiments of the invention, through acquiring the interference information on the shared spectrum, the acquired interference information is utilized to select the PDCCH candidate channel for the UE, so that the eNodeB improves the capacity or the coverage performance of the PDCCH when the shared spectrum has interference.

Drawings

FIG. 1 is a block diagram of a wireless communication network;

Fig. 2 is a flowchart of a control information process according to an embodiment of the present invention;

Fig. 3 is a signaling interaction diagram for acquiring interference information suffered by a shared spectrum through a coordination controller according to an embodiment of the present invention;

Fig. 4 is a flowchart illustrating selecting a PDCCH candidate channel for a UE according to acquired interference information according to an embodiment of the present invention;

Fig. 5 is a flowchart illustrating selecting a PDCCH candidate channel for a UE according to acquired interference information according to an embodiment of the present invention;

Fig. 6 is a flowchart illustrating selecting a PDCCH candidate channel for a UE according to acquired interference information according to an embodiment of the present invention;

Fig. 7 is a structural diagram of a base station according to an embodiment of the present invention;

fig. 8 is a structural diagram of a base station according to an embodiment of the present invention;

FIG. 9 is a block diagram of a coordinating controller according to an embodiment of the present invention;

fig. 10 is a structural diagram of a coordination controller according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions provided by the present invention are further described in detail below by referring to the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of a wireless communication network, such as the wireless communication network 100 shown in fig. 1. The wireless communication network 100 includes a number of base stations 110 and other network entities to support a number of user equipment 120 for communication.

the base station 110 may be an eNodeB in an LTE system or an LTE subsequent evolution system. A base station 110 may support/manage one or more cells, and when a UE120 needs to communicate with the network, it will select one cell to initiate access.

The UE120 may also be referred to as a Mobile Terminal (MT), a Mobile Station (MS), etc., and may communicate with one or more core networks via a Radio Access Network (RAN).

The core network device 130 is connected to one or more base stations 110, and the core network device 130 includes a Mobility Management Entity (MME).

The spectrum sharing can make full use of the vacant spectrum and improve the utilization rate of spectrum resources. Without loss of generality, the description is given taking spectrum sharing of GSM networks and LTE networks as an example.

GSM shares part of the spectrum with LTE, and GSM preferentially uses the shared spectrum.

Taking PDCCH occupying 3 symbols, Cell Identity (Cell ID) equal to 0 as an example, assuming that the number of RBs interfered by GSM in LTE is 2, the numbers of the RBs are respectively 9 and 66, each interfered RB includes 8 REGs, then GSM co-interferes with 16 REGs of LTE (each REG is composed of 4 REs, the 1 st symbol only includes 2 REGs due to existence of a reference signal, and each of the 2 nd and 3 rd symbols has 3 REGs).

for each aggregation level, the number of REGs N interfered by GSM is as follows:

(1) when the polymerization grade is 8, N is more than or equal to 1 and less than or equal to 3;

(2) When the polymerization grade is 4, N is more than or equal to 0 and less than or equal to 2;

(3) When the polymerization grade is 2, N is more than or equal to 0 and less than or equal to 1;

(4) When the polymerization grade is 1, N is more than or equal to 0 and less than or equal to 1.

From the above analysis, when LTE has 2 RBs interfered by GSM, there are interfered REGs in the resources occupied by PDCCH of each aggregation level; meanwhile, except for aggregation level 8, there are no interfered REGs in the resources occupied by PDCCHs of other aggregation levels. In the prior art, whether the PDCCH candidate channel contains the REG interfered by the GSM or not is not considered, the REG interfered by the GSM is easily allocated to the PDCCH, and thus the performance of the PDCCH is reduced.

referring to fig. 2, a flowchart of control information processing according to an embodiment of the present invention includes:

Step 201, the eNodeB acquires the interference information received by the shared spectrum.

The shared spectrum is a spectrum shared by a network different from the LTE network and used by the LTE network. In a spectrum sharing scenario, when the shared spectrum is used by LTE, other networks using the shared spectrum for LTE networks, such as GSM, UMTS, CDMA, WIMAX, tv or radio, may interfere with the shared spectrum. The eNodeB can directly acquire the interference information suffered by the shared spectrum, and also can acquire the interference information suffered by the shared spectrum through a coordination controller, and the coordination controller performs information interaction with the eNodeB and the base stations of the other networks respectively.

the Interference information received by the shared spectrum may be a Signal to Interference plus Noise Ratio (SINR) value of Interference on each resource block RB of the shared spectrum.

step 202, the eNodeB selects a PDCCH candidate channel for the UE according to the acquired interference Information, where the CCE in the PDCCH candidate channel carries Downlink Control Information (DCI) of the UE.

And the eNodeB selects the PDCCH candidate channel for the UE according to the acquired interference information suffered by the shared spectrum. And aiming at PDCCH candidate channels with different aggregation levels, the eNodeB allocates different numbers of CCEs to the UE to bear the DCI of the UE.

The PDCCH candidate channel may be in either the PDCCH common search space or the PDCCH dedicated search space.

Step 203, the eNodeB sends the DCI to the UE.

And the eNodeB sends the DCI to the UE through an air interface.

When LTE uses the shared spectrum to be interfered, the eNodeB acquires interference information of the shared spectrum, selects a PDCCH candidate channel for the UE by using the acquired interference information, and sends DCI to the UE. And the acquired interference information on the shared spectrum is used for selecting the PDCCH candidate channel for the UE, so that the capacity or coverage performance of the PDCCH in the scene of the shared spectrum is improved, and the demodulation performance of the PDCCH is enhanced.

the eNodeB of the LTE can carry out information interaction through the coordination controller to obtain interference information suffered by the shared spectrum; or the eNodeB may directly perform information interaction with access network devices of other networks to obtain interference information on the shared spectrum.

For convenience of description, a GSM-LTE spectrum sharing scenario is taken as an example for detailed description.

The eNodeB acquires the interference information suffered by the shared spectrum through the coordination controller.

When the coordination Controller exists between the GSM network and the LTE network as an independent network element, the coordination Controller performs information interaction with a Base Station Controller (BSC) of the GSM and an eNodeB of the LTE network, respectively, see fig. 3.

the eNodeB sends cell information to a coordination controller, so that the coordination controller calculates interference information suffered by a shared frequency spectrum according to the cell information and a measurement report received by the coordination controller from a BSC; and the eNodeB receives the interference information of the shared frequency spectrum sent by the coordination controller.

The details of the eNodeB obtaining the interference information suffered by the shared spectrum through the coordination controller are as follows:

Step 301, the BSC sends a measurement report to the coordination controller, where the measurement report includes frequency point occupation state and power information of the shared spectrum.

the BSC may send the measurement report to the coordination controller in two ways, one is a time-triggered sending policy, that is, the measurement report is sent to the coordination controller in a fixed period; the other is an event-triggered (non-periodic) transmission strategy, that is, when the occupancy state of the shared frequency point changes, a measurement report is sent to the coordination controller.

Step 302, the eNodeB sends cell information to the coordination controller.

the eNodeB sends the cell information of the eNodeB to the coordination controller. The cell information includes a system bandwidth, a center frequency point number, a number of Resource Blocks (RBs) shared in a high frequency band, a number of RBs shared in a low frequency band, and the like. The cell information may be information of a cell in which the UE is located.

Optionally, the sending of the cell information to the coordination controller by the eNodeB may be a time-triggered sending strategy, that is, sending the measurement report to the coordination controller at a fixed period; or may be an event-triggered (non-periodic) based transmission strategy. Step 301 and step 302 are not ordered sequentially.

Step 303, the coordination controller calculates the SINR value of the interference of GSM to LTE on each RB of the shared spectrum according to the received measurement report and the cell information.

and the coordination controller acquires a measurement report sent by the BSC and cell information sent by the eNodeB, and calculates the SINR value of the GSM interference on the LTE on each RB of the shared spectrum according to the received measurement report and the cell information.

And step 304, the eNodeB receives the SINR value of GSM to LTE interference on each RB of the shared spectrum sent by the coordination controller.

And the coordination controller sends the calculated SINR value of the interference of GSM on LTE on each RB of the shared spectrum to the eNodeB, namely the eNodeB acquires the interference information on the shared spectrum through the coordination controller.

And sending the interference information of the shared spectrum acquired by the coordination controller to an eNodeB, so that the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, wherein a Control Channel Element (CCE) in the PDCCH candidate channel carries DCI of the UE, and the DCI is sent to the UE by the eNodeB through an air interface.

Optionally, when the coordination controller is located inside an eNodeB of LTE, or the coordination controller is used as a functional module of the eNodeB, the eNodeB acquiring interference information suffered by the shared spectrum includes: the BSC sends a measurement report to the eNodeB, wherein the measurement report comprises the frequency point occupation state and the power information of the shared spectrum; and the eNodeB calculates the SINR value of the GSM interference to the LTE on each RB of the shared spectrum according to the cell information and the received measurement report.

And after the eNodeB acquires the interference information suffered by the shared spectrum, the eNodeB selects a PDCCH candidate channel for the UE according to the acquired interference information, and sends DCI to the UE through an air interface.

There are various implementation ways for the eNodeB to select a PDCCH candidate channel for the UE according to the acquired interference information. In general, the eNodeB obtains an interfered REG set according to the interference information suffered by the shared spectrum, where the REG set at least includes one interfered REG, and selects a PDCCH candidate channel for the UE according to the interfered REG set.

referring to fig. 4, a flowchart for selecting a PDCCH candidate channel for a UE according to acquired interference information is provided in an embodiment of the present invention.

step 401, the eNodeB acquires the interfered REG set according to the acquired interference information.

And the eNodeB acquires the interfered REGs according to the acquired SINR value of the GSM interference on the LTE on each RB of the shared spectrum, and the interfered REGs can form a REG set which at least comprises one interfered REG.

specifically, an SINR threshold may be preset, and if an SINR value of interference of GSM to LTE on a certain RB is smaller than the SINR threshold, the GSM has interference to the RB of LTE; otherwise GSM does not interfere with this RB of LTE. And according to the interference of each RB by the GSM, the eNodeB acquires the REG interfered by the GSM.

Step 402, the eNodeB selects a PDCCH candidate channel for the UE, where the PDCCH candidate channel does not include any interfered REG in the set, and the CCE in the PDCCH candidate channel carries DCI of the UE.

specifically, according to the REG set, the eNodeB determines whether the PDCCH candidate channel contains an interfered REG in any of the sets.

For a PDCCH candidate channel with aggregation level 1, the eNodeB determines whether the CCE of the PDCCH candidate channel includes any interfered REG in the set, and if the CCE does not include any interfered REG in the set, the PDCCH candidate channel does not include any interfered REG in the set, and the eNodeB may select the PDCCH candidate channel for the UE, otherwise the eNodeB does not select the PDCCH candidate channel for the UE.

For a PDCCH candidate channel with aggregation level 2, the eNodeB determines whether all 2 CCEs of the PDCCH candidate channel include any interfered REG in the set, and if none of the 2 CCEs include any interfered REG in the set, the PDCCH candidate channel does not include any interfered REG in the set, and the eNodeB may select the PDCCH candidate channel for the UE, otherwise the eNodeB does not select the PDCCH candidate channel for the UE. For the PDCCH candidate channel with aggregation level 4 or 8, please refer to the above processing procedure of the PDCCH candidate channel with aggregation level 2, which is not described again.

The PDCCH candidate channel may be in either the PDCCH common search space or the PDCCH dedicated search space.

and selecting the non-interfered PDCCH candidate channel for the UE by using the acquired interference information of the shared spectrum, thereby further improving the capacity or coverage performance of the PDCCH in the scene of the shared spectrum.

Referring to fig. 5, a flowchart for selecting a PDCCH candidate channel for a UE according to acquired interference information is provided in an embodiment of the present invention.

step 501, the eNodeB acquires the interfered REG set according to the acquired interference information, where the set at least includes one interfered REG.

Step 502, the eNodeB selects a PDCCH candidate channel for the UE, where the number of interfered REGs included in the PDCCH candidate channel is smaller than a preset number threshold, and the CCE in the PDCCH candidate channel carries DCI of the UE.

specifically, the eNodeB acquires the interfered REG set according to the acquired SINR value of GSM interference to LTE on each RB of the shared spectrum.

the eNodeB counts the number of interfered REGs contained in the PDCCH candidate channel.

If the number of interfered REGs contained in the PDCCH candidate channel is less than a preset number threshold, the eNodeB selects the PDCCH candidate channel for the UE; or, if the number of interfered REGs contained in the PDCCH candidate channel is greater than a preset number threshold, the eNodeB does not select the PDCCH candidate channel for the UE; there is no limitation on the case where the number of interfered REGs included in the PDCCH candidate channel is equal to the preset number threshold.

Further, after the eNodeB acquires the interfered REG set, the eNodeB first sets an interference counter ndisterbedreg to 0 for the PDCCH candidate channel of the UE. The eNodeB traverses the CCEs included in the PDCCH candidate channel, and adds 1 to the interference counter ndisterebedreg if the REG included in the CCEs belongs to the interfered REG set. After the traversal is completed, the eNodeB acquires the ndisterbedreg value of the PDCCH candidate channel, selects the PDCCH candidate channel for the UE if ndisterbedreg < NThREG, does not select the PDCCH candidate channel for the UE if ndisterbedreg > NThREG, and does not specifically limit the case if ndisterbedreg ═ NThREG. Wherein, NThREG is the threshold of the preset number of the system.

And acquiring the interfered REG set by utilizing the interference information of the shared frequency spectrum, and selecting the PDCCH candidate channel containing the interfered REGs with the quantity less than a preset quantity threshold for the UE according to the interfered REG set, thereby improving the capacity or the coverage performance of the PDCCH in the scene of the shared frequency spectrum. Although the algorithm complexity is increased compared with the selection of the non-interfered PDCCH candidate channel for the UE, the robustness is higher, and the success rate of the selection of the PDCCH candidate channel can be improved.

optionally, the eNodeB acquires the interfered REG set according to the acquired interference information, and selects a PDCCH candidate channel for the UE, where the number of interfered REGs included in the PDCCH candidate channel is smaller than a preset number threshold and the number of interfered REGs included in the PDCCH candidate channel is the smallest.

the eNodeB may obtain values of ndisterbedregs of the plurality of PDCCH candidate channels, and if the number of interfered REGs included in the plurality of PDCCH candidate channels is smaller than a preset number threshold, the eNodeB may select, for the UE, the PDCCH candidate channel including the smallest number of interfered REGs.

Referring to fig. 6, a flowchart for selecting a PDCCH candidate channel for a UE according to acquired interference information is provided in an embodiment of the present invention.

step 601, the eNodeB acquires the interfered REG set according to the acquired interference information, and calculates the average SINR of each interfered REG in the set.

Step 602, the eNodeB selects a PDCCH candidate channel for the UE, where an interference amount of an interfered REG included in the PDCCH candidate channel is smaller than a preset interference amount threshold, and a CCE in the PDCCH candidate channel carries DCI of the UE.

Specifically, the eNodeB acquires the interfered REGs according to the acquired SINR value of GSM interfering with LTE on each RB of the shared spectrum, and calculates an average SINR of each interfered REG.

The eNodeB calculates the amount of interference of the PDCCH candidate channel based on the average SINR of the interfered REGs.

If the interference amount of the PDCCH candidate channel is smaller than a preset interference amount threshold, the eNodeB selects the PDCCH candidate channel for the UE; or, if the interference amount of the PDCCH candidate channel is greater than a preset interference amount threshold, the eNodeB does not select the PDCCH candidate channel for the UE; the interference amount of the PDCCH candidate channel is not limited to the preset interference amount threshold.

Further, the eNodeB obtains the interfered REG set, calculates an average SINRi of each interfered REGi in the set, and then calculates an interfered factor η i ═ f (SINRi) normalized by the REGi, which reflects the magnitude of interference by GSM on the REGi, where the larger the interference is, the larger the value of η i is, the range is 0 < η i < 1, REGi belongs to the interfered REG set, and i is a natural number.

the eNodeB calculates the amount of interference for the PDCCH candidate channel by a calculation formula where nREG represents the total number of interfered REGs contained in the PDCCH candidate channel.

if the interference amount Sn of the PDCCH candidate channel satisfies Sn < SThREG, the PDCCH candidate channel is selected for the UE, and if the interference amount Sn of the PDCCH candidate channel satisfies Sn > SThREG, the PDCCH candidate channel is not selected for the UE.

and acquiring an interfered REG set by using the interference information of the shared spectrum, calculating the average SINR of each interfered REG in the set, and selecting a PDCCH candidate channel containing the interfered REG with the interference amount smaller than a preset interference amount threshold for the UE according to the average SINR of each interfered REG in the interfered REG set, thereby improving the capacity or coverage performance of the PDCCH in the shared spectrum scene. Although the algorithm complexity is increased compared to selecting a PDCCH candidate channel for the UE that contains less interfered REGs than the preset number threshold, the robustness of the algorithm is further improved and the PDCCH candidate channel selection success rate is further improved.

optionally, the eNodeB acquires the interfered REG set according to the acquired interference information, and selects a PDCCH candidate channel for the UE, where an interference amount Sn of the PDCCH candidate channel satisfies that Sn is less than SThREG, and the interference amount Sn of the PDCCH candidate channel is minimum.

the methods described in fig. 4, 5 and 6 are equally applicable when the shared spectrum is not interfered. And the eNodeB acquires the interfered REG set according to the interference information of the shared spectrum, and if the shared spectrum is not interfered, the set is an empty set.

Referring to fig. 7, a structure diagram of a base station according to an embodiment of the present invention is provided. The eNodeB is a base station in LTE. A base station 70 configured to perform the method of fig. 2, 3, 4, 5 or 6, comprising: a network interface unit 701, a processing unit 702 and a transceiver unit 703.

the network interface unit 701 is configured to acquire interference information received by a shared spectrum, where the shared spectrum is a spectrum shared by a network different from LTE and used by LTE, and the network different from LTE may be a network such as GSM, UMTS, CDMA, WIMAX, television, or radio.

A processing unit 702, configured to select a PDCCH candidate channel for the UE according to the interference information received by the shared spectrum acquired by the network interface unit 701, where a CCE in the PDCCH candidate channel carries DCI of the UE. The PDCCH candidate channel can be located in a PDCCH common search space or a PDCCH dedicated search space.

A transceiver 703, configured to send the DCI to a UE over an air interface.

Optionally, the eNodeB may perform information interaction with the coordination controller through the network interface unit 701, and obtain interference information received by the shared spectrum from the coordination controller; or, the eNodeB may perform information interaction with an access network device of a network different from the LTE through the network interface unit 701, to acquire interference information received by the shared spectrum.

under the spectrum sharing scene of GSM and LTE, the eNodeB sends cell information to a coordination controller through a network interface unit 701, so that the coordination controller calculates the interference information suffered by the shared spectrum according to the cell information and a measurement report received by the coordination controller from BSC; the eNodeB receives the interference information on the shared spectrum sent by the coordination controller through the network interface unit 701.

Further, the interference information suffered by the shared spectrum may be an SINR value of interference on each resource block RB of the shared spectrum.

When other networks share the LTE spectrum, the processing procedure of the eNodeB is similar to that in the GSM and LTE spectrum sharing scenario, and is not described again.

After obtaining the interference information received by the shared spectrum through the network interface unit 701, the selecting, by the processing unit 702, a PDCCH candidate channel for the UE according to the obtained interference information includes: and acquiring an interfered REG set according to the interference information of the shared spectrum, wherein the REG set at least comprises one interfered REG, and selecting a PDCCH candidate channel for the UE according to the interfered REG set. There are various implementations of the processing unit 702 for selecting PDCCH candidate channels for the UE based on the set of interfered REGs.

Optionally, the processing unit 702 selects a PDCCH candidate channel for the UE according to the interfered REG set, where the PDCCH candidate channel does not include any interfered REG in the set.

optionally, the processing unit 702 selects a PDCCH candidate channel for the UE according to the interfered REG set, where the number of interfered REGs included in the PDCCH candidate channel is smaller than a preset number threshold.

optionally, the processing unit 702 selects a PDCCH candidate channel for the UE according to the interfered REG set, where the number of interfered REGs included in the PDCCH candidate channel is smaller than a preset number threshold and the number of interfered REGs included in the PDCCH candidate channel is the minimum.

optionally, after obtaining interference information received by the shared spectrum through the network interface unit 701, the selecting, by the processing unit 702, a PDCCH candidate channel for the UE according to the obtained interference information includes: and acquiring an interfered REG set according to the interference information of the shared spectrum, wherein the REG set at least comprises one interfered REG, calculating the average SINR of each interfered REG in the REG set, and selecting a PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set. Optionally, selecting a PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set includes: the interference amount of the interfered REG contained in the PDCCH candidate channel is less than a preset interference amount threshold.

After the network interface unit 701 obtains the interference information suffered by the shared spectrum, the processing unit 702 may refer to the method described in fig. 4, fig. 5, or fig. 6 for the detailed processing of selecting the PDCCH candidate channel for the UE.

The network interface unit may be a network interface, the processing unit may be a processor, and the transceiver unit may be a transceiver, referring to fig. 8, which is a structure diagram of a base station according to an embodiment of the present invention. The base station 80, configured to perform the method of the base station in fig. 2, fig. 3, fig. 4, fig. 5 or fig. 6, includes: a network interface 801, a processor 802, and a transceiver 803.

When LTE uses the shared spectrum to be interfered, the eNodeB acquires interference information of the shared spectrum, selects a PDCCH candidate channel for the UE by using the acquired interference information, and sends DCI to the UE. And the acquired interference information on the shared spectrum is used for selecting the PDCCH candidate channel for the UE, so that the capacity or the coverage performance of the PDCCH in the scene of the shared spectrum is improved.

Referring to fig. 9, a structure diagram of a coordination controller according to an embodiment of the present invention is provided.

The LTE-heterogeneous network shares the frequency spectrum for the LTE network, a coordination controller exists between the LTE network and the LTE-heterogeneous network, the coordination controller can respectively perform information interaction with the LTE-heterogeneous network and the LTE network to acquire interference information suffered by the shared frequency spectrum, and an eNodeB of the LTE can select a PDCCH candidate channel for the UE according to the interference information. LTE-diverse networks include GSM, UMTS, CDMA, WIMAX, television or radio networks, etc.

A coordinating controller 90, comprising: a network interface unit 901 and a processing unit 902. The coordinating controller 90 may perform the method of coordinating controllers in fig. 3.

A processing unit 902, configured to obtain interference information received by a shared spectrum, where the shared spectrum is a spectrum shared by a network different from a long term evolution LTE and used by the LTE;

a network interface unit 901, configured to send the interference information acquired by the processing unit 902 to an eNodeB.

Specifically, in a GSM and LTE spectrum sharing scenario, the network interface unit 901 is configured to receive cell information sent by an eNodeB; a network interface unit 901, further configured to receive a measurement report sent by the BSC; a processing unit 902, configured to calculate interference information suffered by the shared spectrum according to the cell information and the measurement report received by the network interface unit 901.

further, the processing unit 902 is configured to calculate an SINR value of interference on each resource block RB of the shared spectrum according to the cell information and the measurement report received by the network interface unit 901.

The network interface unit may be a network interface, and the processing unit may be a processor, referring to fig. 10, a structure diagram of a coordinated controller according to an embodiment of the present invention is provided. The coordinating controller 100 is configured to perform the method of coordinating controllers in fig. 3, and includes: a network interface 1001 and a processor 1002.

an embodiment of the present invention provides a system for controlling information processing, including a base station as shown in fig. 7 and a coordination controller as shown in fig. 9, for executing the method of the base station and the coordination controller in fig. 2, fig. 3, fig. 4, fig. 5, or fig. 6.

it should be noted that the above examples are for the purpose of helping those skilled in the art better understand the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. It will be apparent to those skilled in the art from the above description that various equivalent modifications or changes may be made, and such modifications or changes also fall within the scope of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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

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

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

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

From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

in short, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Claims (33)

1. A method of controlling information processing, comprising:

An evolution base station eNodeB acquires interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a long term evolution LTE and used by the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

The eNodeB selects a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, wherein a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE;

The eNodeB transmits the DCI to the UE;

The eNodeB selects a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, and comprises the following steps: and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, or selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

2. The method of claim 1, wherein the eNodeB acquires interference information suffered by a shared spectrum, comprising:

And the eNodeB acquires the interference information suffered by the shared spectrum through a coordination controller.

3. the method of claim 2, wherein when the LTE-different network is GSM, the eNodeB obtains the interference information suffered by the shared spectrum through a coordination controller, and comprises:

The eNodeB sends cell information to the coordination controller, so that the coordination controller calculates interference information suffered by a shared frequency spectrum according to the cell information and a measurement report received from a Base Station Controller (BSC);

And the eNodeB receives the interference information suffered by the shared frequency spectrum sent by the coordination controller.

4. The method of any one of claims 1 to 3, wherein the eNodeB acquiring the interference information suffered by the shared spectrum comprises:

and the eNodeB acquires the Signal Interference Noise Ratio (SINR) value of interference on each Resource Block (RB) of the shared spectrum.

5. The method of any one of claims 1 to 3, wherein the eNodeB selecting the PDCCH candidate channel for the UE according to the interference information comprises:

The eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG;

and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set.

6. The method of claim 4, in which the eNodeB selects PDCCH candidate channels for the UE based on the interference information, comprising:

the eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG;

And the eNodeB selects the PDCCH candidate channel for the UE according to the REG set.

7. The method of claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the set of REGs, comprising:

And the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, wherein the PDCCH candidate channel does not contain any interfered REG in the REG set.

8. The method of claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the set of REGs, comprising:

And the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, wherein the number of the interfered REGs contained in the PDCCH candidate channel is less than a preset number threshold.

9. The method of claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the set of REGs, comprising:

And the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, wherein the number of interfered REGs contained in the PDCCH candidate channel is less than a preset number threshold, and the number of the interfered REGs contained in the PDCCH candidate channel is minimum.

10. the method of any one of claims 1 to 3, wherein the eNodeB selecting the PDCCH candidate channel for the UE according to the interference information comprises:

the eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG;

the eNodeB calculates the average SINR of each interfered REG in the REG set;

And the eNodeB selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

11. The method of claim 4, in which the eNodeB selects PDCCH candidate channels for the UE based on the interference information, comprising:

the eNodeB acquires an interfered Resource Element Group (REG) set according to the interference information, wherein the REG set at least comprises one interfered REG;

the eNodeB calculates the average SINR of each interfered REG in the REG set;

and the eNodeB selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

12. The method of claim 10, wherein the eNodeB selecting the PDCCH candidate channel for the UE, comprising:

and the eNodeB selects the PDCCH candidate channel for the UE, wherein the interference amount of the interfered REG contained in the PDCCH candidate channel is less than a preset interference amount threshold.

13. A base station, comprising:

The network interface unit is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

a processing unit, configured to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface unit, where a Control Channel Element (CCE) in the PDCCH candidate channel carries Downlink Control Information (DCI) of the UE;

A transceiving unit configured to transmit the DCI to the UE;

Wherein the selecting a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface unit includes: and selecting the PDCCH candidate channel for the UE according to the REG set, or selecting the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

14. the base station of claim 13, wherein the network interface unit is configured to obtain interference information suffered by a shared spectrum, and comprises:

The method is used for acquiring the interference information suffered by the shared spectrum through a coordination controller.

15. The base station of claim 14, wherein when the LTE-different network is a global system for mobile communications GSM, the network interface unit is configured to obtain, through a coordination controller, interference information suffered by the shared spectrum, and includes:

The network interface unit is used for sending cell information to the coordination controller so that the coordination controller calculates interference information suffered by a shared spectrum according to the cell information and a measurement report received from a Base Station Controller (BSC);

The network interface unit is further configured to receive interference information on the shared spectrum sent by the coordination controller.

16. The base station according to any of claims 13 to 15, wherein the network interface unit, configured to obtain the interference information suffered by the shared spectrum, comprises:

And the method is used for acquiring the SINR value of the interference on each resource block RB of the shared spectrum.

17. The base station according to any of claims 13 to 15, wherein the processing unit, configured to select the PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, includes:

the REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG;

For selecting the PDCCH candidate channel for the UE according to the REG set.

18. the base station of claim 16, wherein the processing unit, configured to select the PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, comprises:

the REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG;

for selecting the PDCCH candidate channel for the UE according to the REG set.

19. the base station of claim 17, wherein the processing unit configured to select the PDCCH candidate channel for the UE according to the set of REGs comprises:

And the resource allocation unit is used for selecting the PDCCH candidate channel for the UE according to the REG set, wherein the PDCCH candidate channel does not contain any interfered REG in the REG set.

20. The base station of claim 17, wherein the processing unit configured to select the PDCCH candidate channel for the UE according to the set of REGs comprises:

and the resource allocation unit is used for selecting the PDCCH candidate channel for the UE according to the REG set, wherein the number of interfered REGs contained in the PDCCH candidate channel is less than a preset number threshold.

21. The base station of claim 17, wherein the processing unit configured to select the PDCCH candidate channel for the UE according to the set of REGs comprises:

And the UE is configured to select the PDCCH candidate channel according to the REG set, wherein the number of interfered REGs included in the PDCCH candidate channel is less than a preset number threshold, and the number of the interfered REGs included in the PDCCH candidate channel is the smallest.

22. The base station according to any of claims 13 to 15, wherein the processing unit, configured to select the PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, includes:

the REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG;

For calculating an average SINR of each interfered REG in the REG set;

For selecting the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

23. The base station of claim 16, wherein the processing unit, configured to select the PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, comprises:

The REG set is used for acquiring an interfered resource element group REG set according to the interference information, and the REG set at least comprises one interfered REG;

For calculating an average SINR of each interfered REG in the REG set;

for selecting the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

24. The base station of claim 22, wherein the processing unit configured to select the PDCCH candidate channel for the UE comprises:

And the resource allocation unit is used for selecting the PDCCH candidate channel for the UE, wherein the interference amount of the interfered REG contained in the PDCCH candidate channel is less than a preset interference amount threshold.

25. A base station, comprising:

the network interface is used for acquiring interference information suffered by a shared spectrum, and the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

a processor, configured to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface, where a Control Channel Element (CCE) in the PDCCH candidate channel carries Downlink Control Information (DCI) of the UE;

A transceiver for transmitting the DCI to the UE;

Wherein the selecting a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information acquired by the network interface comprises: and selecting the PDCCH candidate channel for the UE according to the REG set, or selecting the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

26. A method of controlling information processing, comprising:

the method comprises the steps that a coordination controller obtains interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

The coordination controller sends the interference information to an evolution base station eNodeB of the LTE, the interference information is used for the eNodeB to select a Physical Downlink Control Channel (PDCCH) candidate channel for User Equipment (UE) according to the interference information, a Control Channel Element (CCE) in the PDCCH candidate channel bears Downlink Control Information (DCI) of the UE, and the DCI is sent to the UE by the eNodeB;

wherein the step of using the interference information to select the Physical Downlink Control Channel (PDCCH) candidate channel for the User Equipment (UE) by the eNodeB according to the interference information comprises the following steps: and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, or selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

27. The method of claim 26, wherein when the LTE-different network is a global system for mobile communications GSM, the obtaining interference information suffered by the shared spectrum by the coordinating controller comprises:

The coordination controller receives cell information sent by the eNodeB;

The coordination controller receives a measurement report sent by a Base Station Controller (BSC);

and the coordination controller calculates the interference information suffered by the shared spectrum according to the cell information and the measurement report.

28. the method of claim 26 or 27, wherein the interference information comprises:

A signal to interference plus noise ratio, SINR, value of interference on each resource block, RB, of the shared spectrum.

29. A coordinated controller, comprising:

The processing unit is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) and used by the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

A network interface unit, configured to send the interference information obtained by the processing unit to an eNodeB (evolved node b) of the LTE, where the interference information is used by the eNodeB to select a PDCCH candidate channel for a UE according to the interference information, a CCE in the PDCCH candidate channel carries DCI of the UE, and the DCI is sent to the UE by the eNodeB;

Wherein the step of using the interference information to select the Physical Downlink Control Channel (PDCCH) candidate channel for the User Equipment (UE) by the eNodeB according to the interference information comprises the following steps: and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, or selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

30. The coordination controller of claim 29, wherein when the LTE-different network is a global system for mobile communications GSM, the processing unit is configured to obtain interference information suffered by a shared spectrum, and the method comprises:

The network interface unit is configured to receive cell information sent by the eNodeB;

The network interface unit is also used for receiving a measurement report sent by a base station controller BSC;

The processing unit is configured to calculate interference information suffered by the shared spectrum according to the cell information received by the network interface unit and the measurement report received by the network interface unit.

31. the coordinated controller of claim 29 or 30, wherein the processing unit is configured to obtain interference information suffered by the shared spectrum, and includes:

and the method is used for acquiring the SINR value of the interference on each resource block RB of the shared spectrum.

32. A coordinated controller, comprising:

The processor is used for acquiring interference information suffered by a shared spectrum, wherein the shared spectrum is a spectrum shared by a network different from a Long Term Evolution (LTE) to the LTE; wherein the interference information comprises an interfered Resource Element Group (REG) set, and the REG set at least comprises one interfered REG;

a network interface, configured to send the interference information to an eNodeB (evolved node b) of the LTE, where the interference information is used by the eNodeB to select a PDCCH candidate channel for a UE according to the interference information, where a Control Channel Element (CCE) in the PDCCH candidate channel carries DCI of the UE, and the DCI is sent to the UE by the eNodeB;

wherein the step of using the interference information to select the Physical Downlink Control Channel (PDCCH) candidate channel for the User Equipment (UE) by the eNodeB according to the interference information comprises the following steps: and the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, or selects the PDCCH candidate channel for the UE according to the average SINR of each interfered REG in the REG set.

33. A system for controlling information processing, comprising:

A base station according to any one of claims 13 to 24; and

A coordination controller as claimed in any one of claims 29 to 31.