WO2016077950A1

WO2016077950A1 - Control information processing method, apparatus and system

Info

Publication number: WO2016077950A1
Application number: PCT/CN2014/091248
Authority: WO
Inventors: 王轶
Original assignee: 华为技术有限公司
Priority date: 2014-11-17
Filing date: 2014-11-17
Publication date: 2016-05-26
Also published as: CN105874836B; CN105874836A

Abstract

Disclosed are a control information processing method, apparatus and system. When interference exists in a shared frequency spectrum, an eNodeB acquires information about the interference suffered by the shared frequency spectrum, and selects a PDCCH candidate channel for a user equipment according to the interference information, wherein a CCE in the PDCCH candidate channel bears downlink control information about the UE, and sends the downlink control information to the UE.

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, apparatus, and system for controlling information processing.

Background technique

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 a user equipment (User Equipment, UE). The resource allocation of the PDCCH is performed with a Control Channel Element (CCE) granularity. A CCE consists of 9 Resource Element Groups (REGs). One REG consists of 4 or 6 adjacent resource elements located on the same Orthogonal Frequency Division Multiplexing (OFDM) symbol. Resource Element, RE), but the number of available REs is only four, and the REG consisting of 6 REs contains two Reference Signals (RSs), and the REs occupied by the RSs cannot be used by the REGs of the control channels. .

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

With the changes of the network and the popularity of intelligent terminals, operators use spectrum sharing technology to frequency Recycling resources, operators can use the original Global System for Mobile Communication (GSM), Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (MIMO) Multiple Access, CDMA), Worldwide Interoperability for Microwave Access (WIMAX), TV or broadcast spectrum sharing, for example, operators can gradually release the spectrum of the GSM network for use in LTE networks. Through the spectrum sharing, the vacant spectrum of GSM traffic is fully utilized, the spectrum resource utilization rate is improved, and the LTE large bandwidth demand is met, and the LTE competitiveness is improved.

When the PDCCH is interfered, in order to ensure that the UE correctly demodulates the PDCCH, the eNodeB selects a PDCCH with a higher aggregation level for control information transmission. However, the PDCCH with a higher aggregation level is used to reduce the system capacity. At the same time, when the interference is large, if the aggregation level is selected to the maximum, the PDCCH's demodulation performance cannot be met, and the PDCCH coverage performance is reduced. When spectrum sharing, the PDCCH is inevitably interfered by the heterogeneous system network, reducing the capacity or coverage of the PDCCH.

Summary of the invention

The embodiments of the present invention provide a method, an apparatus, and a system for controlling information processing, which solve the problem of capacity or coverage of a PDCCH when interference occurs.

The embodiment of the present invention can be specifically implemented by the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for controlling information processing, where the method includes: an evolved base station eNodeB acquires interference information that is shared by a shared spectrum, and the shared spectrum is shared by the network different from long-term evolution LTE to the LTE. a spectrum used by the eNodeB to select a physical downlink control channel PDCCH candidate channel for the user equipment UE according to the interference information, where a control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE; the eNodeB The UE sends the DCI.

With reference to the first aspect, in a first possible implementation manner, the eNodeB acquires a shared frequency The interference information received by the spectrum includes: the eNodeB acquires interference information received by the shared spectrum by using a coordination controller.

With reference to the first aspect, in a second possible implementation manner, the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, where the eNodeB acquires the interfered resource element group REG set according to the interference information, The set of REGs includes at least one interfered REG; the eNodeB selects the PDCCH candidate channel for the UE according to the set of REGs.

With reference to the first aspect, in a third possible implementation manner, the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, where the eNodeB acquires the interfered resource element group REG set according to the interference information, The REG set includes at least one interfered REG; the eNodeB calculates an average SINR of each interfered REG in the REG set; and the average SINR of the eNodeB according to each of the REG sets that are interfered with is The UE selects the PDCCH candidate channel.

In a second aspect, an embodiment of the present invention provides a base station, where the base station includes: a network interface unit, configured to acquire interference information received by a shared spectrum, where the shared spectrum is different from a long-term evolution LTE network shared to the LTE. The processing unit is configured to select, according to the interference information acquired by the network interface unit, a physical downlink control channel PDCCH candidate channel for the user equipment UE, where the control channel element CCE in the PDCCH candidate channel carries the downlink of the UE Control information DCI; a transceiver unit, configured to send the DCI to the UE.

With reference to the second aspect, in a first possible implementation manner, the network interface unit is configured to obtain interference information that is received by the shared spectrum, and includes: acquiring, by using a coordination controller, interference information received by the shared spectrum.

With reference to the second aspect, in a second possible implementation, the processing unit is configured to select a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, including: used according to the interference information Obtaining a resource element group REG set that is interfered, the REG set includes at least one interfered REG; and is configured to use the REG set as described The UE selects the PDCCH candidate channel.

With reference to the second aspect, in a third possible implementation, the processing unit is configured to select a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, including: used according to the interference information. Acquiring an interfered resource element group REG set, the REG set including at least one interfered REG; an average SINR for calculating each interfered REG in the REG set; for using each of the REG sets The average SINR of the interfered REG is the UE selecting the PDCCH candidate channel.

In a third aspect, an embodiment of the present invention provides a base station, including: a network interface, configured to acquire interference information received by a shared spectrum, where the shared spectrum is different from a spectrum shared by the LTE-used network to the LTE; a processor, configured to select, according to the interference information acquired by the network interface unit, a physical downlink control channel PDCCH candidate channel, 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.

In a fourth aspect, the embodiment of the present invention provides a method for controlling information processing, where the method includes: the coordination controller acquires interference information that is received by the shared spectrum, and the shared spectrum is shared by the network different from the long-term evolution LTE to the LTE. a spectrum used; the coordination controller sends the interference information to the evolved base station eNodeB of the LTE, and the interference information is used by the eNodeB to select a physical downlink control channel PDCCH candidate channel for the user equipment UE according to the interference information. The control channel element CCE in the PDCCH candidate channel carries the downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.

With reference to the fourth aspect, in a first possible implementation, when the LTE-independent network is a global mobile communication system GSM, the coordination controller acquires interference information received by the shared spectrum, including: the coordinated control Receiving the cell information sent by the eNodeB; the coordination controller receives the measurement report sent by the base station controller BSC; the coordination controller calculates the interference information received by the shared spectrum according to the cell information and the measurement report .

Combining the fourth aspect, the first possible implementation of the fourth aspect, in the second possible In an implementation manner, the interference information includes: a signal to interference and 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: a processing unit, configured to acquire interference information received by a shared spectrum, where the shared spectrum is different from long-term evolution LTE network sharing a spectrum used by LTE; a network interface unit, configured to send the interference information acquired by the processing unit to an evolved base station eNodeB of the LTE, where the interference information is used by the eNodeB as a user equipment according to the interference information The UE selects a physical downlink control channel PDCCH candidate channel, and the control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.

With reference to the fifth aspect, in a first possible implementation, when the LTE-independent network is a global mobile communication system GSM, the processing unit is configured to acquire interference information received by the shared spectrum, including: a network interface unit, configured to receive cell information sent by the eNodeB, where the network interface unit is further configured to receive a measurement report sent by the base station controller BSC, where the processing unit is configured to receive according to the network interface unit The cell information and the measurement report received by the network interface unit are calculated, and interference information received by the shared spectrum is calculated.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, in a second possible implementation, the processing unit is configured to acquire interference information received by the shared spectrum, including: acquiring the shared spectrum The interference-to-interference signal-to-noise ratio SINR value on each resource block RB.

In a sixth aspect, an embodiment of the present invention provides a coordination controller, where the coordination controller includes: a processor, configured to acquire interference information received by a shared spectrum, where the shared spectrum is different from long-term evolution LTE. a spectrum used by the LTE; a network interface, configured to send the interference information to the evolved base station eNodeB of the LTE, where the interference information is used by the eNodeB to select a physical downlink control channel PDCCH for the user equipment UE according to the interference information. a candidate channel, a control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.

The embodiments of the present invention obtain the interference information received by the shared spectrum, and use the acquired interference information to select a PDCCH candidate channel for the UE. When the shared spectrum has interference, the eNodeB improves the capacity or coverage performance of the PDCCH.

DRAWINGS

1 is a schematic structural diagram of a wireless communication network;

2 is a flowchart of control information processing according to an embodiment of the present invention;

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

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

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

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

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 structural diagram of a coordination 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

The technical solutions provided by the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic diagram of the architecture of a wireless communication network, such as the wireless communication network 100 shown in FIG. 1. The wireless communication network 100 includes a plurality of base stations 110 and other network entities for supporting a number of uses. The device 120 communicates.

The base station 110 may be an eNodeB in an LTE system or an LTE subsequent evolution system. One base station 110 may support/manage one or more cells, and when the UE 120 needs to communicate with the network, it will select a cell to initiate access.

The UE 120 may also be referred to as a mobile terminal (MT), a mobile station (MS), or the like, 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).

Spectrum sharing can make full use of the vacant spectrum and improve the utilization of spectrum resources. Without loss of generality, the spectrum sharing of the GSM network and the LTE network is taken as an example for description.

GSM shares part of the spectrum with LTE, and GSM prefers to use shared spectrum.

The PDCCH is 3 symbols, and the cell identifier (Cell ID) is equal to 0. Assume that the number of LTE LTE interfered with by GSM is 2, the number is 9 and 66, and each interfered RB contains 8 REG, GSM interferes with the 16 REGs of LTE (each REG consists of 4 REs, the first symbol contains 2 REGs due to the presence of reference signals, and 3 REGs on the 2nd and 3rd symbols) .

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

(1) When the polymerization level is 8, 1 ≤ N ≤ 3;

(2) When the polymerization level is 4, 0 ≤ N ≤ 2;

(3) When the polymerization level is 2, 0 ≤ N ≤ 1;

(4) When the polymerization level is 1, 0 ≤ N ≤ 1.

It can be seen from the above analysis that when LTE has two RBs interfered by GSM, the resources occupied by the PDCCH of each aggregation level have the interfered REG; and the PDCCH of other aggregation levels is occupied except the aggregation level=8. The resources are all REGs that are not disturbed. The prior art does not consider whether the PDCCH candidate channel includes the REG that is interfered by the GSM, and is easy to divide the PDCCH. The REG is interfered with by GSM, thereby reducing the performance of the PDCCH.

Referring to FIG. 2, a flowchart of control information processing provided by an embodiment of the present invention includes:

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

The shared spectrum is a spectrum shared by the LTE-based network for use by the LTE network. In the spectrum sharing scenario, when LTE uses the shared spectrum, other networks that use the shared spectrum to the LTE network, such as GSM, UMTS, CDMA, WIMAX, television, or broadcast, interfere with the shared spectrum. The eNodeB can directly obtain the interference information received by the shared spectrum, and can also obtain the interference information received by the shared spectrum through the coordination controller, and the coordination controller separately performs information interaction with the eNodeB and the base stations of the other networks.

The interference information received by the shared spectrum may be a Signal to Interference plus Noise Ratio (SINR) value of 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 (Downlink Control Information, DCI) of the UE.

The eNodeB selects a PDCCH candidate channel for the UE according to the interference information received by the acquired shared spectrum. For a PDCCH candidate channel of different aggregation levels, the eNodeB allocates a different number of CCEs to the UE, and carries the DCI of the UE.

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

Step 203: The eNodeB sends the DCI to the UE.

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

When the LTE uses the shared spectrum to be interfered, the eNodeB acquires the interference information received by the shared spectrum, selects the PDCCH candidate channel for the UE by using the acquired interference information, and sends the DCI to the UE. The PDCCH candidate channel is selected for the UE by using the acquired interference information of the shared spectrum, which improves the capacity or coverage performance of the PDCCH in the shared spectrum scenario, and enhances the demodulation performance of the PDCCH.

The eNodeB of the LTE can perform the information exchange by the coordinating controller to obtain the interference information received by the shared spectrum. Alternatively, the eNodeB can directly interact with the access network devices of other networks to obtain the interference information received by the shared spectrum.

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

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

When the coordinating controller exists as an independent network element between the GSM network and the LTE network, the coordinating controller performs information interaction with the GSM base station controller (BSC) and the LTE eNodeB, respectively. Referring to FIG. 3, the present invention is implemented. An example provides a signaling interaction diagram for obtaining interference information received by a shared spectrum by a coordination controller.

The eNodeB sends the cell information to the coordinating controller, so that the coordinating controller calculates the interference information received by the shared spectrum according to the cell information and the measurement report received by the coordinating controller from the BSC; the eNodeB receives the sharing sent by the coordinating controller Interference information received by the spectrum.

The eNodeB obtains the interference information received by the shared spectrum through the coordination controller as follows:

Step 301: The BSC sends a measurement report to the coordination controller, where the measurement report includes frequency occupancy status and power information of the shared spectrum.

The BSC can send measurement reports to the coordination controller in two ways. One is based on a time-triggered transmission strategy, that is, the measurement report is sent to the coordination controller at a fixed period; the other is based on an event-triggered (non-periodic) transmission strategy. That is, the measurement report is sent to the coordination controller when the shared frequency occupancy state changes.

Step 302: The eNodeB sends the cell information to the coordination controller.

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

Optionally, the sending, by the eNodeB, the cell information to the coordinating controller may be a time-triggered transmission policy, that is, sending the measurement report to the coordinating controller at a fixed period; or may be an event-triggered (non-periodic) transmission policy. Steps 301 and 302 do not have a sequence.

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

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

Step 304: The eNodeB receives the SINR value of the GSM to LTE interference on each RB of the shared spectrum transmitted by the coordinating controller.

The coordinating controller sends the calculated SINR value of the GSM to the LTE interference on each RB of the shared spectrum to the eNodeB, that is, the eNodeB acquires the interference information received by the shared spectrum through the coordination controller.

The interference information received by the coordinated spectrum obtained by the coordinating controller is sent to the eNodeB, so that the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, and the control channel element CCE in the PDCCH candidate channel carries the DCI of the UE, and the DCI is passed by the eNodeB through the air interface. Sent to the UE.

Optionally, when the coordinating controller is located in the eNodeB of the LTE, or the coordinating controller is a function module of the eNodeB, the eNodeB acquires interference information received by the shared spectrum, where the BSC sends a measurement report to the eNodeB, where the measurement report includes the shared spectrum. The frequency occupancy state and power information; the eNodeB calculates the SINR value of GSM to LTE interference on each RB of the shared spectrum according to the cell information and the received measurement report.

After acquiring the interference information received by the shared spectrum, the eNodeB selects a PDCCH candidate channel for the UE according to the acquired interference information, and sends the DCI to the UE through the air interface.

The eNodeB has multiple implementation manners for selecting a PDCCH candidate channel for the UE according to the acquired interference information. In general, the eNodeB acquires the interfered REG set according to the interference information received by the shared spectrum, the REG set includes at least one interfered REG, and selects a PDCCH candidate channel for the UE according to the interfered REG set.

Referring to FIG. 4, a flowchart of 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.

The eNodeB obtains the interfered REG according to the acquired SINR value of the GSM to LTE interference on each RB of the shared spectrum, and the interfered REG may form a REG set, and the set includes at least one interfered REG.

Specifically, the SINR threshold may be preset. If the SINR value of the GSM to LTE interference on a certain RB is less than the SINR threshold, the GSM has interference to the RB of the LTE; otherwise, the GSM does not interfere with the RB of the LTE. According to the interference of GSM by each RB, the eNodeB acquires the REG that is interfered by GSM.

Step 402: The eNodeB selects a PDCCH candidate channel for the UE, where the PDCCH candidate channel does not include the REG that is interfered by any one of the foregoing sets, and the CCE in the PDCCH candidate channel carries the DCI of the UE.

Specifically, according to the REG set, the eNodeB determines whether the PDCCH candidate channel includes an REG that is interfered by any one of the sets.

For the PDCCH candidate channel with the aggregation level of 1, the eNodeB determines whether the CCE of the PDCCH candidate channel includes any one of the set that is interfered with the REG, and if the CCE does not include any one of the foregoing set of the interfered REG, the PDCCH candidate The channel does not include the REG that is interfered by any one of the foregoing sets, 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 the aggregation level of 2, the eNodeB determines whether the two CCEs of the PDCCH candidate channel all contain the REG that is interfered by any one of the foregoing sets, if the two CCEs do not contain any of the above-mentioned sets that are interfered. REG, the PDCCH candidate channel does not include any one of the foregoing set of interfered REGs, 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 an aggregation level of 4 or 8, refer to the aggregation level of 2. The above processing procedure of the PDCCH candidate channel will not be described again.

The interference information received by the shared spectrum is used to select a PDCCH candidate channel that is not interfered by the UE, and the capacity or coverage performance of the PDCCH in the shared spectrum scenario can be further improved.

Referring to FIG. 5, a flowchart of selecting a PDCCH candidate channel for a UE according to acquired interference information is provided.

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

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

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

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

If the number of the interfered REGs included in the PDCCH candidate channel is less than a preset threshold, the eNodeB selects the PDCCH candidate channel for the UE; or if the number of the interfered REGs included in the PDCCH candidate channel is greater than a preset The number of thresholds, the eNodeB does not select the PDCCH candidate channel for the UE; and the case where the number of interfered REGs included in the PDCCH candidate channel is equal to a preset number of thresholds is not limited.

Further, after the eNodeB acquires the interfered REG set, the eNodeB first sets the interference counter N _Disturbed REG to 0 for the PDCCH candidate channel of the UE. The eNodeB traverses the CCE included in the PDCCH candidate channel. If the REG included in the CCE belongs to the set of interfered REGs, the interference counter N _Disturbed REG is incremented by one. After the traverse, the value of an eNodeB acquires _N DisturbedREG PDCCH candidate channel if the _{_N} DisturbedREG <N ThREG, compared to the UE selects the channel PDCCH candidate, if _{_N} DisturbedREG> N ThREG, no PDCCH for the UE select the candidate channel, The case where N _Disturbed _REG = N _ThREG is not specifically limited. Among them, N _ThREG is the system preset number threshold.

Obtaining the interfered REG set by using the interference information received by the shared spectrum, and selecting, according to the interfered REG set, the PDCCH candidate channel that includes the number of the interfered REGs that are smaller than the preset threshold, improves the capacity of the PDCCH in the shared spectrum scenario. Or cover performance. Although the algorithm complexity is increased than selecting a PDCCH candidate channel that is not interfered for the UE, the robustness is higher, and the PDCCH candidate channel selection success rate can be improved.

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

The eNodeB may obtain the value of the N _Disturbed REG of the multiple PDCCH candidate channels. If the number of the interfered REGs included in the multiple PDCCH candidate channels is less than the preset threshold, the eNodeB may select the interfered REG included in the UE. The smallest number of PDCCH candidate channels.

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

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

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

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

The eNodeB calculates the PDCCH candidate channel according to the average SINR of the interfered REG The amount of interference.

If the interference amount of the PDCCH candidate channel is less than the preset interference threshold, the eNodeB selects the PDCCH candidate channel for the UE; or if the interference amount of the PDCCH candidate channel is greater than the preset interference threshold, the eNodeB does not select the UE. The PDCCH candidate channel is not limited to the case where the interference amount of the PDCCH candidate channel is equal to the preset interference amount threshold.

Further, the eNodeB acquires the interfered REG set, calculates the average SINR _i of each interfered REG _i in the set, and calculates the REG _i normalized interfered factor ηi=f(SINR _i ), which is reflected on the REG _i Due to the size of GSM interference, the larger the interference, the larger the value of η _i is, the range is 0 < η _i <1, REG _i belongs to the set of REGs that are interfered, and i is a natural number.

The eNodeB calculates the interference amount of the PDCCH candidate channel, and the calculation formula is

Where n _REG represents the total number of interfered REGs included in the PDCCH candidate channel.

If the interference amount S _{n of} the PDCCH candidate channel satisfies S _n <S _ThREG , the PDCCH candidate channel is selected for the UE, and if the interference amount S _{n of} the PDCCH candidate channel satisfies S _n >S _ThREG , the UE is not selected. The PDCCH candidate channel.

Acquiring the interfered REG set by the interference information received by the shared spectrum and calculating the average SINR of each interfered REG in the set, according to the average SINR of each interfered REG in the interfered REG set is selected by the UE The interference of the REG is smaller than the PDCCH candidate channel of the preset interference threshold, which improves the capacity or coverage performance of the PDCCH in the shared spectrum scenario. Although the algorithm complexity is increased compared to the PDCCH candidate channel that the UE selects to include the number of interfered REGs less than the preset number of thresholds, 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 the eNodeB selects a PDCCH candidate channel for the UE, where the interference quantity S _{n of} the PDCCH candidate channel satisfies S _n <S _ThREG and the interference quantity S _{n of} the PDCCH candidate channel The smallest.

The methods described in Figures 4, 5 and 6 are also the same when the shared spectrum is not disturbed. Be applicable. The eNodeB acquires the interfered REG set according to the interference information received by the shared spectrum. If the shared spectrum is not interfered, the set is an empty set.

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

The network interface unit 701 is configured to obtain interference information that is shared by the shared spectrum, and the shared spectrum is shared by the network different from the LTE to the spectrum used by the LTE, and the network different from the LTE may be GSM, UMTS, CDMA, WIMAX, television, or broadcast. Waiting for the network.

The processing unit 702 is 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 the CCE in the PDCCH candidate channel carries the DCI of the UE. The PDCCH candidate channel may be located in the PDCCH common search space or in the PDCCH-specific search space.

The transceiver unit 703 is configured to send the DCI to the UE by using an air interface.

Optionally, the eNodeB can perform information interaction with the coordinating controller through the network interface unit 701, and obtain interference information received by the shared spectrum from the coordinating controller; or the eNodeB can access the access network of the LTE-independent network through the network interface unit 701. The device exchanges information and obtains interference information that is shared by the shared spectrum.

In the GSM and LTE spectrum sharing scenario, the eNodeB sends the cell information to the coordinating controller through the network interface unit 701, so that the coordinating controller calculates the shared spectrum according to the cell information and the measurement report received by the coordinating controller from the BSC. The interference information received by the eNodeB through the network interface unit 701 is received by the coordination controller.

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

When the other network shares the scenario with the LTE spectrum, the processing of the eNodeB is similar to that of the GSM and LTE spectrum sharing scenarios, and is not described here.

After the network interface unit 701 acquires the interference information received by the shared spectrum, the processing unit 702 selects the PDCCH candidate channel for the UE according to the acquired interference information, and includes: acquiring the interfered REG set according to the interference information received by the shared spectrum, where the REG set includes at least one The interfered REG, and selects a PDCCH candidate channel for the UE according to the interfered REG set. The processing unit 702 has multiple implementations for selecting a PDCCH candidate channel for the UE according to the interfered REG set.

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 the REG that is interfered by any one of the foregoing sets.

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

Optionally, the processing unit 702 selects, according to the interfered REG set, a PDCCH candidate channel, where the number of the interfered REGs included in the PDCCH candidate channel is less than a preset threshold, and the interfered REG included in the PDCCH candidate channel The smallest number.

Optionally, after the network interface unit 701 acquires the interference information received by the shared spectrum, the processing unit 702 selects the PDCCH candidate channel for the UE according to the acquired interference information, and includes: acquiring the interfered REG set according to the interference information received by the shared spectrum, the REG The set includes at least one interfered REG, and calculates an average SINR of each interfered REG in the REG set, and selects a PDCCH candidate channel for the UE according to an average SINR of each interfered REG in the REG set. Optionally, selecting the PDCCH candidate channel according to the average SINR of each of the interfered REGs in the REG set includes: the interference amount of the interfered REG included in the PDCCH candidate channel is less than a preset interference amount threshold.

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

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, a base station structure diagram is provided in the embodiment of the present invention. The base station 80 is configured to perform the method of the base station in FIG. 2, FIG. 3, FIG. 4, FIG. 5 or FIG. 6, and includes: a network interface 801, a processor 802, and a transceiver 803.

When the LTE uses the shared spectrum to be interfered, the eNodeB acquires the interference information received by the shared spectrum, selects the PDCCH candidate channel for the UE by using the acquired interference information, and sends the DCI to the UE. The interference information received by the acquired shared spectrum is used to select a PDCCH candidate channel for the UE, which improves the capacity or coverage performance of the PDCCH in the shared spectrum scenario.

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

A network shared spectrum that is different from LTE is used by the LTE network. There is a coordination controller between the LTE and the LTE-independent network. The coordinated controller can separately exchange information with the LTE-independent network and LTE to obtain interference information of the shared spectrum. So that the LTE eNodeB selects a PDCCH candidate channel for the UE according to the interference information. Networks other than LTE include networks such as GSM, UMTS, CDMA, WIMAX, television, or broadcast.

The coordination controller 90 includes a network interface unit 901 and a processing unit 902. The coordination controller 90 can perform the method of coordinating the controller of FIG.

The processing unit 902 is configured to acquire interference information received by the shared spectrum, where the shared spectrum is different from the spectrum used by the LTE-based network to be used by the LTE;

The network interface unit 901 is configured to send the interference information acquired by the processing unit 902 to the eNodeB.

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

Further, the processing unit 902 is configured to receive cell information according to the network interface unit 901. And the measurement report, calculating the SINR value of the interference on each resource block RB of the shared spectrum.

The network interface unit may be a network interface, and the processing unit may be a processor. Referring to FIG. 10, a coordination controller structure diagram provided by an embodiment of the present invention is provided. The coordination controller 100 is configured to execute the method for coordinating the controller in FIG. 3, including: 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 performing FIG. 2, FIG. 3, FIG. 4, FIG. 5 or FIG. Medium base station and method of coordinating controllers.

It should be noted that the above-described examples are intended to help those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention. A person skilled in the art will be able to make various modifications or changes in the form of the above-described examples, and such modifications or variations are also 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 various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of cells is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. To another A system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted 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 location to another. A storage medium may be any available media that can be accessed by a computer. This is exemplified by, but not limited to, computer readable media or other optical disk storage, magnetic disk storage media or other magnetic storage device, or can be used to carry or store desired program code in the form of an instruction or data structure and can be accessed by a computer. Any other medium.

In conclusion, the above is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

A method for controlling information processing, comprising:

The evolved base station eNodeB acquires interference information that is shared by the shared spectrum, and the shared spectrum is different from the spectrum used by the long-term evolution LTE network to be used by the LTE;

The eNodeB selects a physical downlink control channel PDCCH candidate channel for the user equipment UE according to the interference information, and the control channel element CCE in the PDCCH candidate channel carries the downlink control information DCI of the UE;

The eNodeB sends the DCI to the UE.
The method according to claim 1, wherein the eNodeB acquires interference information received by the shared spectrum, including:

The eNodeB acquires interference information received by the shared spectrum by using a coordination controller.
The method according to claim 2, wherein, when the LTE-independent network is a global mobile communication system GSM, the eNodeB acquires interference information received by the shared spectrum by using a coordination controller, including:

Transmitting, by the eNodeB, the cell information to the coordinating controller, so that the coordinating controller calculates interference information received by the shared spectrum according to the cell information and the measurement report received from the base station controller BSC;

The eNodeB receives interference information received by the coordinated spectrum sent by the coordination controller.
The method according to any one of claims 1 to 3, wherein the eNodeB acquires interference information received by the shared spectrum, including:

The eNodeB acquires a signal to interference and noise ratio (SINR) value of interference on each resource block RB of the shared spectrum.
The method according to any one of claims 1 to 4, wherein the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, including:

Obtaining, by the eNodeB, the interfered resource element group REG set according to the interference information, where the REG set includes at least one interfered REG;

The eNodeB selects the PDCCH candidate channel for the UE according to the REG set.
The method according to claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, including:

The eNodeB selects the PDCCH candidate channel for the UE according to the REG set, and the PDCCH candidate channel does not include an REG that is interfered by any one of the REG sets.
The method according to claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, including:

The eNodeB selects the PDCCH candidate channel for the UE according to the REG set, and the number of interfered REGs included in the PDCCH candidate channel is less than a preset number threshold.
The method according to claim 5, wherein the eNodeB selects the PDCCH candidate channel for the UE according to the REG set, including:

The eNodeB selects the PDCCH candidate channel for the UE according to the REG set, where the number of interfered REGs included in the PDCCH candidate channel is less than a preset number threshold and the received by the PDCCH candidate channel The number of interfering REGs is the smallest.
The method according to any one of claims 1 to 4, wherein the eNodeB selects a PDCCH candidate channel for the UE according to the interference information, including:

Obtaining, by the eNodeB, the interfered resource element group REG set according to the interference information, where the REG set includes at least one interfered REG;

The eNodeB calculates an average SINR of each of the REG sets that are interfered with by the REG;

The eNodeB averages the REGs that are interfered with each of the REG sets The SINR selects the PDCCH candidate channel for the UE.
The method of claim 9, wherein the selecting, by the eNodeB, the PDCCH candidate channel for the UE comprises:

The eNodeB selects the PDCCH candidate channel for the UE, and the interference amount of the interfered REG included in the PDCCH candidate channel is less than a preset interference amount threshold.
A base station, comprising:

a network interface unit, configured to acquire interference information received by the shared spectrum, where the shared spectrum is different from the spectrum used by the long-term evolution LTE network to be used by the LTE;

a processing unit, configured to select, according to the interference information acquired by the network interface unit, a physical downlink control channel PDCCH candidate channel, where a control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE ;

And a transceiver unit, configured to send the DCI to the UE.
The base station according to claim 11, wherein the network interface unit is configured to acquire interference information received by the shared spectrum, including:

And acquiring, by the coordination controller, interference information received by the shared spectrum.
The base station according to claim 12, wherein when the LTE-independent network is a global mobile communication system GSM, the network interface unit is configured to acquire interference information received by the shared spectrum by using a coordination controller. ,include:

The network interface unit is configured to send cell information to the coordination controller, so that the coordination controller calculates interference information received by the shared spectrum according to the cell information and the measurement report received from the base station controller BSC;

The network interface unit is further configured to receive interference information received by the coordinated spectrum sent by the coordination controller.
The base station according to any one of claims 11 to 13, wherein the network interface unit is configured to acquire interference information received by the shared spectrum, including:

Signal to interference and noise ratio for interference on each resource block RB for acquiring the shared spectrum SINR value.
The base station according to any one of claims 11 to 14, wherein the processing unit is configured to select a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, including:

And configured to acquire, according to the interference information, a resource element group REG set that is interfered, where the REG set includes at least one interfered REG;

And selecting, by using the REG set, the PDCCH candidate channel for the UE.
The base station according to claim 15, wherein the processing unit is configured to select the PDCCH candidate channel for the UE according to the REG set, including:

And configured to select the PDCCH candidate channel for the UE according to the REG set, where the PDCCH candidate channel does not include an REG that is interfered by any one of the REG sets.
The base station according to claim 15, wherein the processing unit is configured to select the PDCCH candidate channel for the UE according to the REG set, including:

And the method for selecting the PDCCH candidate channel for the UE according to the REG set, where the number of interfered REGs included in the PDCCH candidate channel is less than a preset number threshold.
The base station according to claim 15, wherein the processing unit is configured to select the PDCCH candidate channel for the UE according to the REG set, including:

And selecting, by the REG set, the PDCCH candidate channel, where the number of the interfered REGs included in the PDCCH candidate channel is less than a preset number threshold, and the interference included in the PDCCH candidate channel is interfered The number of REGs is the smallest.
The base station according to any one of claims 11 to 14, wherein the processing unit is configured to select a PDCCH candidate channel for the UE according to the interference information acquired by the network interface unit, including:

And configured to acquire, according to the interference information, a resource element group REG set that is interfered, where the REG set includes at least one interfered REG;

Mean for calculating an average SINR of each of the REG sets that are interfered with;

And selecting, by the UE, the PDCCH candidate channel according to an average SINR of the REG that is interfered by each of the REG sets.
The base station according to claim 19, wherein the processing unit, configured to select the PDCCH candidate channel for the UE, includes:

And the method for selecting the PDCCH candidate channel for the UE, where an interference amount of the interfered REG included in the PDCCH candidate channel is smaller than a preset interference amount threshold.
A base station, comprising:

a network interface, configured to acquire interference information received by the shared spectrum, where the shared spectrum is different from the spectrum used by the long-term evolution LTE network to be used by the LTE;

a processor, configured to select, according to the interference information acquired by the network interface unit, a physical downlink control channel PDCCH candidate channel, where a control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE ;

And a transceiver, configured to send the DCI to the UE.
A method for controlling information processing, comprising:

Coordinating the controller to obtain interference information received by the shared spectrum, where the shared spectrum is different from the spectrum used by the long-term evolution LTE network to be used by the LTE;

The coordination controller sends the interference information to the evolved base station eNodeB of the LTE, where the interference information is used by the eNodeB to select a physical downlink control channel PDCCH candidate channel for the user equipment UE according to the interference information, where the PDCCH The control channel element CCE in the candidate channel carries the downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.
The method according to claim 22, wherein when the LTE-independent network is a global mobile communication system GSM, the coordination controller acquires interference information received by the shared spectrum, including:

The coordination controller receives cell information sent by the eNodeB;

The coordination controller receives a measurement report sent by the base station controller BSC;

The coordination controller calculates interference information received by the shared spectrum according to the cell information and the measurement report.
The method of claim 22 or 23, wherein the interference information comprises:

The signal to interference and noise ratio SINR value of the interference on each resource block RB of the shared spectrum.
A coordination controller, comprising:

a processing unit, configured to acquire interference information received by the shared spectrum, where the shared spectrum is different from the spectrum used by the LTE-based network to be used by the LTE;

a network interface unit, configured to send the interference information acquired by the processing unit to the evolved base station eNodeB of the LTE, where the interference information is used by the eNodeB to select a physical downlink control channel for the user equipment UE according to the interference information. a PDCCH candidate channel, where a control channel element CCE in the PDCCH candidate channel carries downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.
The coordination controller according to claim 25, wherein, when the LTE-independent network is a global mobile communication system GSM, the processing unit is configured to acquire interference information received by the shared spectrum, including:

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

The network interface unit is further configured to receive a measurement report sent by the base station controller BSC;

The processing unit is configured to calculate interference information received 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.
The coordination controller according to claim 25 or 26, wherein the processing unit is configured to acquire interference information received by the shared spectrum, including:

A signal to interference and noise ratio SINR value for interference on each resource block RB of the shared spectrum.
A coordination controller, comprising:

a processor, configured to acquire interference information received by the shared spectrum, where the shared spectrum is different from the long The network of the evolved LTE is shared with the spectrum used by the LTE;

a network interface, configured to send the interference information to the evolved base station eNodeB of the LTE, where the interference information is used by the eNodeB to select a physical downlink control channel PDCCH candidate channel for the user equipment UE according to the interference information, where the PDCCH The control channel element CCE in the candidate channel carries the downlink control information DCI of the UE, and the DCI is sent by the eNodeB to the UE.
A system for controlling information processing, comprising:

a base station as claimed in claims 11 to 20;

Coordination controller as claimed in claims 25 to 27.