CN105338543B - Method, apparatus, system and the relevant device of network assistance terminal blind examination - Google Patents

Abstract

The invention discloses a network-assisted terminal blind detection method, device, system and related equipment, which are used to reduce the complexity of terminal blind detection and save terminal processing resources in the process of network-assisted deletion of interference. Among them, the network-assisted terminal blind detection method implemented by the network side includes receiving the adjacent cell uplink and downlink time slot configuration information sent by the neighboring cell base station; It is determined by the uplink and downlink time slot configuration information of the zone. The method for network-assisted terminal blind detection implemented by the terminal side includes receiving blind detection related information sent by the network side; determining unknown type of adjacent cell subframes according to the blind detection related information, and performing the detection on the unknown type of adjacent cell subframes. Blind inspection.

Description

Method, device, system and related equipment for network-assisted terminal blind detection

technical field

The present invention relates to the technical field of wireless communication, in particular to a method, device, system and related equipment for network-assisted terminal blind detection.

Background technique

Network Assisted Interference Cancellation (NAICS) means that the terminal is equipped with an advanced receiver, using the interference information notified by the network side, combined with its own blind detection to delete adjacent cell interference to improve reception performance.

As shown in Fig. 1 and Fig. 2 respectively, Fig. 1 is a schematic diagram of inter-cell interference, and Fig. 2 is a schematic diagram of network-assisted interference cancellation. In order to perform effective interference cancellation, the terminal needs to obtain auxiliary information from the network side, which mainly includes the following two types: one is cell-specific auxiliary information, including system bandwidth, synchronization indication, and Cell ID (neighboring cell ID). Cell ID), CRS Ports (common reference signal port), PA parameters and PB parameters; the other is user-level (User-specific) auxiliary information, including CSI-RS (Channel Status Information Reference Signal, channel state information reference signal) , TM (Transmission Mode, transmission mode), RI (RankIndication, rank indication), PMI (Precoding Matrix Indicator, precoding matrix indication), PA parameters, MCS (Modulation and Coding Scheme, modulation and coding strategy) DMRS Ports (demodulation reference signal port), DMRS VCID (demodulation reference signal virtual cell identifier), resource allocation type, resource allocation granularity, etc.

Currently, the LTE system supports a total of 7 uplink and downlink time slot ratios, as shown in Table 1:

Table 1

The NAICS technology can only eliminate the downlink subframe interference of adjacent cells, but cannot do anything about the uplink subframe. Only when the terminal determines that the current subframe of the neighboring cell is a downlink subframe, can it perform interference cancellation through NACIS. For application scenarios where the ratio of upper and lower time slots changes dynamically, such as small cell enhancement (eIMTA) application scenarios, due to the high-level signaling delay, the terminal cannot rely on high-level signaling to know whether the current subframe of the neighboring cell is a downlink subframe , can only rely on its own blind detection to know whether the current subframe of the neighboring cell is a downlink subframe. According to Table 1, it can be seen that the 6 subframes with subframe numbers {#3, #4, #6, #7, #8, #9} may be downlink subframes. Therefore, in extreme cases, the terminal needs to The downlink subframe of the adjacent cell can be determined only by performing blind detection on these 6 subframes. As shown in table 2:

Table 2

This increases the complexity of terminal blind detection, and at the same time, since terminal blind detection needs to consume terminal processing resources, it causes waste of terminal processing resources.

Contents of the invention

Embodiments of the present invention provide a network-assisted terminal blind detection method, device, system and related equipment, which are used to reduce the complexity of terminal blind detection and save terminal processing resources in the process of network-assisted interference removal.

An embodiment of the present invention provides a network-assisted terminal blind detection method implemented by the network side, including:

Receive the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station;

Informing the terminal in the local area of blind detection related information, the blind detection related information is determined according to the uplink and downlink time slot configuration information of the neighboring cell.

Wherein, the adjacent cell uplink and downlink time slot configuration information includes time division duplex uplink and downlink time slot configuration TDD UL/DL configuration information and downlink reference uplink and downlink time slot configuration DL reference UL/DL configuration information in the adjacent cell system information block SIB1 .

The blind detection related information is TDD UL/DL configuration information in the neighboring cell SIB1 and DL reference UL/DL configuration information for small cell enhanced eIMTA; and

Notify the relevant information of terminal blind inspection in this area, including:

Notify the terminal in the local area of the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1.

Determine the relevant information for blind detection as follows:

According to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1, respectively determine the subframe type of each subframe of the neighboring cell;

determining the subframe type information of each subframe in the neighboring cell as the blind detection related information; and

Notify the relevant information of terminal blind inspection in this area, including:

The terminal in the local area is notified of the determined subframe type of each subframe in the adjacent cell by using a method agreed in advance with the terminal in the local area.

An embodiment of the present invention provides a device for network-assisted terminal blind detection, including:

The receiving unit is used to receive the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station;

The notification unit is configured to notify the terminal in the local area of blind detection related information, the blind detection related information is determined according to the uplink and downlink time slot configuration information of the neighboring cell.

The blind detection related information is the adjacent cell uplink and downlink time slot configuration information, and the adjacent cell uplink and downlink time slot configuration information includes the time division duplex uplink and downlink time slot configuration TDD UL/DL configuration in the adjacent cell system information block SIB1 Information and downlink reference UL/DL configuration information for small cell enhanced eIMTA downlink and uplink time slot configuration; and

The notification unit is specifically used to notify the TDD UL/DL configuration information and DL reference UL/DL configuration information in the adjacent cell SIB1 of the terminal in the local area.

The uplink and downlink time slot configuration information of the neighboring cell includes TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1; and

The device also includes a determination unit, wherein:

The determining unit is configured to respectively determine the subframe type of each subframe of the neighboring cell according to the TDD UL/DL configuration information and the DLreference UL/DL configuration information in the neighboring cell SIB1; and determine each subframe of the neighboring cell The subframe type information is the blind detection related information;

The notification unit is specifically configured to notify the terminal in the local area of the determined subframe type of each subframe in the neighboring cell in a manner previously agreed with the terminal in the local area.

An embodiment of the present invention provides a base station, including the above device for network-assisted terminal blind detection implemented by the network side.

An embodiment of the present invention provides a network-assisted terminal blind detection method implemented on the terminal side, including:

Receive blind detection related information sent by the network side;

Determine the unknown type of neighboring cell subframes according to the blind detection related information, and perform blind detection on the unknown type of neighboring cell subframes.

The blind detection-related information is determined by the network side according to the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station.

The uplink and downlink time slot configuration information of the neighboring cell is TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1; the blind detection related information is the TDD UL/DL configuration information in the neighboring cell SIB1 and DL reference UL/DL configuration information; and

Determining an unknown type of adjacent cell subframe according to the blind detection related information includes:

The unknown type of adjacent cell subframe is determined according to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the adjacent cell SIB1.

The adjacent cell uplink and downlink time slot configuration information is the TDD UL/DL configuration information and DL reference UL/DL configuration information in the adjacent cell SIB1; the blind detection related information is the network side according to the adjacent cell SIB1 in TDD UL/DL configuration information and DL reference UL/DL configuration information determine the subframe type information of each subframe in the neighboring cell;

Determining an unknown type of adjacent cell subframe according to the blind detection related information includes:

The unknown type of adjacent cell subframe is determined according to the subframe type information of each subframe of the adjacent cell.

An embodiment of the present invention provides a device for network-assisted terminal blind detection implemented on the terminal side, including:

a receiving unit, configured to receive blind detection related information sent by the network side;

The blind detection unit is configured to determine an unknown type of adjacent cell subframe according to the blind detection related information, and perform blind detection on the unknown type of adjacent cell subframe.

The blind detection related information is determined by the network side according to the adjacent cell uplink and downlink time slot configuration information sent by the adjacent cell base station, and the adjacent cell uplink and downlink time slot configuration information is the TDD UL/DL configuration in the adjacent cell SIB1 information and DL reference UL/DL configuration information; the blind detection related information is TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1; and

The blind detection unit is specifically configured to determine an unknown type of adjacent cell subframe according to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the adjacent cell SIB1.

The blind detection related information is determined by the network side according to the adjacent cell uplink and downlink time slot configuration information sent by the adjacent cell base station, and the adjacent cell uplink and downlink time slot configuration information is the TDD UL/DL configuration in the adjacent cell SIB1 information and DL reference UL/DL configuration information; the blind detection related information is determined by the network side according to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1 for each adjacent cell subframe type information of the subframe; and

The blind detection unit is specifically configured to determine an unknown type of neighboring cell subframe according to the subframe type information of each subframe of the neighboring cell.

An embodiment of the present invention provides a terminal, including the device for network-assisted terminal blind detection implemented on the terminal side.

An embodiment of the present invention provides a network-assisted terminal blind detection system, including a base station and a terminal, wherein the base station is provided with the above-mentioned device for network-assisted terminal blind detection implemented by the network side, and the terminal is provided with the above-mentioned terminal-side device The implemented network-assisted terminal blind detection device.

In the network-assisted terminal blind detection method, device, system and related equipment provided by the embodiments of the present invention, on the network side, the base station receives the adjacent cell uplink and downlink time slot configuration information sent by the neighboring cell, and determines the blind detection correlation of the terminal in the local area accordingly. Information and notify the terminal in the local area, so that the terminal can determine the unknown type of adjacent cell subframe according to the received blind detection related information, and perform blind detection on the unknown type of adjacent cell subframe to determine whether the adjacent cell subframe is downlink It can be seen that according to the embodiment of the present invention, the terminal only needs to perform blind detection on the adjacent cell subframe whose type cannot be determined according to the blind detection related information, without traversing each adjacent cell subframe, thereby reducing the number of terminal blind detection. The complexity saves the processing resources of the terminal.

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

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of inter-cell interference in the prior art;

FIG. 2 is a schematic diagram of network-assisted interference cancellation in the prior art;

FIG. 3 is a schematic diagram of an implementation flow of a network-assisted terminal blind detection method implemented by the network side in an embodiment of the present invention;

FIG. 4 is a schematic diagram of an implementation flow of a network-assisted terminal blind detection method implemented on the terminal side in an embodiment of the present invention;

Fig. 5a is a schematic diagram of the first kind of adjacent cell uplink and downlink configuration information in the embodiment of the present invention;

Fig. 5b is a schematic diagram of the second type of adjacent cell uplink and downlink configuration information in the embodiment of the present invention;

Fig. 5c is a schematic diagram of the third type of adjacent cell uplink and downlink configuration information in the embodiment of the present invention;

6 is a schematic structural diagram of a first network-assisted terminal blind detection device in an embodiment of the present invention;

7 is a schematic structural diagram of a second network-assisted terminal blind detection device in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a network-assisted terminal blind detection system in an embodiment of the present invention.

Detailed ways

In order to reduce the complexity of blind detection when the terminal performs network-assisted interference deletion in the scene where the upper and lower time slot ratios of adjacent cells dynamically change, and save terminal processing resources, embodiments of the present invention provide a method and device for network-assisted terminal blind detection , systems and related equipment.

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention, and in the absence of conflict, the present invention The embodiments and the features in the embodiments can be combined with each other.

As shown in Figure 3, it is a schematic diagram of the implementation process of the method for implementing network-assisted terminal blind detection on the network side, including the following steps:

S31. Receive the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station.

During specific implementation, in the eIMTA scenario, the eNB (base station) can dynamically adjust the ratio of uplink and downlink time slots according to information such as the ratio of uplink and downlink services. Specifically, the eNB notifies the UE (User Equipment, user terminal) of the uplink and downlink time slot configuration used through DCI (Downlink Control Information, downlink control information), and the shortest adjustment time that can be supported is 10 ms. At the same time, in the eIMTA scenario, the reference configuration (reference configuration) is used to solve the HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) timing problem caused by the rapid adjustment of the uplink and downlink slot ratios. The eNB uses SIB1 (System Information Block1, system Information block 1, SIB1 is used to describe cell access related information) TDD UL/DL configuration (time division duplex uplink and downlink time slot configuration) information is used as ULreference configuration (uplink physical channel configuration), and high-layer signaling is used to notify DL reference UL /DLconfiguration (downlink refers to uplink and downlink time slot configuration). Generally speaking, the downlink subframe of the TDD UL/DL configuration in SIB1 cannot be used as a flexible subframe, that is, the downlink subframe in the TDD UL/DL configuration is fixed, and the uplink subframe of the DL reference UL/DL configuration cannot It is used as a flexible subframe, that is, the uplink subframe in DLreference UL/DL configuration is fixed.

Based on this, in the embodiment of the present invention, the uplink and downlink time slot configuration information of the neighboring cell includes TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1. During specific implementation, the base station in the neighboring cell may notify the base station of the above-mentioned uplink and downlink time slot configuration information through the X2 interface.

S32. Notify the relevant information of the blind detection of the terminal in the local area.

Wherein, the information related to blind detection is determined by the base station according to configuration information of uplink and downlink time slots of neighboring cells.

In the embodiment of the present invention, the base station can, but is not limited to, determine the blind detection related information of the terminal in the local area in the following two ways: Method 1, the network side directly sends the uplink and downlink time slot configuration information of the adjacent cell as the blind detection related information to the terminal , the terminal determines the subframe type of the adjacent cell subframe according to the configuration information of the uplink and downlink time slots of the adjacent cell, so as to determine which subframes need to be blindly detected and which subframes do not need to be blindly detected; The slot configuration information respectively determines the subframe type of each subframe in the neighboring cell, where the subframe type can include: uplink subframe, downlink subframe, special subframe and unknown type subframe, and the network side notifies the terminal of each subframe in the neighboring cell The subframe type information of the frame, the terminal directly determines which subframe needs blind detection according to the subframe type information of the adjacent cell subframe (unknown type subframe needs blind detection), compared with method 1, the terminal does not need to perform blind detection in method 2 The subframe that needs to be blindly detected can be directly determined by processing the detection related information, thereby further saving the processing resources of the terminal. The following are introduced respectively:

method one,

The base station determines that the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1 are blind detection related information, and directly notifies the terminal of the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1, so that According to the TDD UL/DL configuration information and DL reference UL/DL configuration information in SIB1, the terminal can determine which subframes are uplink subframes, which subframes are downlink subframes, or which subframes are The subframe type is a special subframe, or the subframe type of which subframes cannot be determined, that is, the subframe type of the subframe is unknown. In this way, when the terminal performs blind detection, it only needs to blindly detect subframes of unknown types. For Subframes of a certain type do not need to perform blind detection, thereby reducing the complexity of terminal blind detection and saving terminal processing resources.

Method 2: The base station processes the received TDD UL/DL configuration information and DLreference UL/DL configuration information in the neighboring cell SIB1, and notifies the terminal in the local area of the processing result as blind detection related information.

For example, according to the TDD UL/DL configuration information and DLreference UL/DL configuration information in the neighboring cell SIB1, the base station can respectively determine the subframe type of each subframe in the neighboring cell, and use the method agreed in advance with the terminal to set the subframe type of each subframe in the neighboring cell. The subframe type of a subframe is sent to the terminal.

Specifically, the base station may, but not limited to, notify the terminal in the local area of the subframe type of each subframe in the neighboring cell in the following two ways:

Mode 1: The base station uses 2 bits to indicate the subframe type of the adjacent cell subframe. For example, the base station and the terminal agree in advance that "00" indicates an unknown type subframe, "01" indicates a downlink subframe (D), "10" indicates an uplink subframe (U), and "11" indicates a special subframe (S). Each radio frame includes 10 subframes in total, therefore, the base station uses 20 bits in total to indicate the subframe type of each subframe in sequence. For example: 01 11 10 10 10 01 11 10 10 10 means that the subframe numbers are 0, 1, 2, ... 9 and the corresponding subframe types are: downlink subframe, special subframe, uplink subframe, uplink subframe, Uplink subframe, downlink subframe, special subframe, uplink subframe, uplink subframe, uplink subframe.

Method 2: The base station and the terminal agree to use "D" to indicate a downlink subframe, "U" to indicate an uplink subframe, "S" to indicate a special subframe, and "F" to indicate an unknown type. DSUUU DSUUU indicates that subframe numbers 0, 1, 2, ... 9 correspond to subframe types: downlink subframe, special subframe, uplink subframe, uplink subframe, uplink subframe, downlink subframe, special Subframe, uplink subframe, uplink subframe, uplink subframe.

After receiving the blind detection related information sent by the network side, the terminal performs blind detection according to the instruction of the network side. Specifically, as shown in FIG. 4, it is a schematic diagram of the implementation process of the method for implementing network-assisted terminal blind detection on the terminal side, including the following steps:

S41. The terminal receives blind detection related information sent by the network side.

Wherein, the blind detection related information is determined by the network side according to the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station. The specific determination method can refer to the network-assisted terminal blind detection method implemented by the network side above, and will not be repeated here.

S42. The terminal determines the unknown type of neighboring cell subframes according to the blind detection related information, and performs blind detection on the unknown type of neighboring cell subframes.

During specific implementation, since there are two implementation methods for the network side to determine the blind detection related information, correspondingly, the blind detection related information notified by the network side to the terminal includes the following two types: 1) The blind detection related information is the TDD UL/ DL configuration information and DL reference UL/DL configuration information; 2) Blind detection related information is the subframe type information of each subframe of the neighboring cell determined by the network side.

During specific implementation, if the blind detection related information notified by the network side is the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1, the terminal first needs to use the TDD UL/DL configuration information in the neighboring cell SIB1 and DL reference UL/DL configuration information to determine the subframe type of each adjacent cell subframe, where the subframe type includes uplink subframe, downlink subframe, special subframe and unknown type subframe, and the terminal targets the unknown type of adjacent cell A subframe is blindly detected to determine the subframe type of the subframe, and if it is a downlink subframe, interference cancellation needs to be performed. If it is an uplink subframe or a special subframe, no interference cancellation is required. If the blind detection related information notified by the network to the terminal is the subframe type information of each subframe of the neighboring cell, the terminal directly determines the unknown type of neighboring cell subframe according to the subframe type information of each subframe of the neighboring cell, and It is enough to perform blind detection on the subframe of the adjacent cell of the same type to determine the subframe type of the subframe. If it is a downlink subframe, it needs to perform interference cancellation.

In order to better understand the embodiments of the present invention, the specific implementation process of the embodiments of the present invention will be described below in combination with specific implementations.

As shown in Fig. 5a, it is a schematic diagram of the first type of adjacent cell uplink and downlink configuration information. The neighbor cell base station notifies the base station of the uplink and downlink time slot configuration information of the neighbor cell as follows: "The TDD UL/DL configuration in SIB1 is config#1, and the DLreference UL/DL configuration of the neighbor cell is config#2".

Taking the base station directly notifying the terminal of the up-down time slot configuration information of the adjacent cell as an example, the base station notifies the UE in the local area: "The TDD UL/DL configuration in the SIB1 of the adjacent cell is config#1, and the DL reference UL/DL configuration of the adjacent cell is config #2". After the terminal receives the above-mentioned uplink and downlink time slot configuration information, since the downlink subframe in the TDD UL/DL configuration in SIB1 is fixed, and the uplink subframe in the DL reference UL/DL configuration is fixed, therefore, the neighboring cell base station When dynamically adjusting the uplink and downlink time slot ratios for terminals in neighboring cells, only the downlink time slots in the TDD UL/DL configuration in SIB1 are fixed and the uplink time slots in the DL reference UL/DL configuration are fixed. Selected in the configuration, that is, the subframes #4 and #9 are downlink subframes and the subframe #7 is an uplink subframe. According to Table 1, only configuration #1 and configuration #1 meet this condition #2 (the two configurations in the black dotted line box in Figure 5a), that is to say, even if the base station in the neighboring cell dynamically adjusts the uplink and downlink time slot ratio for the terminal in the neighboring cell, only two configurations of configuration #1 and configuration #2 can be selected. Configuration, comparing configuration #1 and configuration #2 shows that the subframe types of subframes with subframe numbers #4, #6, #7 and #9 are determined, where #4 is a downlink subframe and #6 is a Special subframes, #7 is an uplink subframe and #9 is a downlink subframe, and #3 subframe and #8 subframe may be either an uplink subframe or a downlink subframe, therefore, the terminal needs to check #3 subframe It only needs to perform blind detection with #8 subframe to determine whether it is a downlink subframe, thereby greatly reducing the complexity of terminal blind detection and saving terminal processing resources.

Taking the subframe type that the base station notifies the terminal of the adjacent cell of the adjacent cell as an example, the base station first determines the subframe type corresponding to each subframe of the adjacent cell, similar to the above description, because the TDD UL/DL configuration in SIB1 The downlink subframe is fixed, and the uplink subframe of DL reference UL/DL configuration is fixed. Therefore, when the base station in the neighboring cell dynamically adjusts the uplink and downlink time slot ratio for the terminals in the neighboring cell, it can only satisfy the SIB1 The downlink time slot in the TDD UL/DL configuration is fixed and the uplink time slot of the DL reference UL/DL configuration is selected in the time slot configuration, that is, subframes #4 and #9 are downlink subframes, and #7 is uplink According to Table 1, only configuration #1 and configuration #2 (the two configurations in the black dashed box in Figure 5a) satisfy this condition, that is to say, even if the neighboring cell base station is a neighboring cell The terminal dynamically adjusts the ratio of uplink and downlink time slots, and can only choose two configurations of configuration #1 and configuration #2. Comparing configuration #1 and configuration #2, we can see that the subframe numbers are #4, #6, #7 and # The subframe type of the 9 subframe is determined, #4 is the downlink subframe, #6 is the special subframe, #7 is the uplink subframe and #9 is the downlink subframe, and #3 subframe and #8 subframe That is, it may be an uplink subframe or a downlink subframe. Therefore, the base station may use any of the following methods to notify the terminal of the subframe type information "01 11 10 00 01 01 11 10 00 01" or "DSUFDDSUFD" of the adjacent cell subframe. Specifically, the base station may carry the subframe type information of the adjacent cell subframe in the signaling interacted with the terminal. According to the subframe type information of the adjacent cell subframe notified by the base station, the terminal performs blind detection on #3 subframe and #8 subframe to determine whether it is a downlink subframe.

As shown in Fig. 5b, it is a schematic diagram of the second type of adjacent cell uplink and downlink configuration information. The neighbor cell base station notifies the base station of the uplink and downlink time slot configuration information of the neighbor cell as follows: "The TDD UL/DL configuration in SIB1 is config#0, and the DLreference UL/DL configuration of the neighbor cell is config#2".

Taking the base station directly notifying the terminal of the up-down time slot configuration information of the adjacent cell as an example, the base station notifies the UE in the local area: "The TDD UL/DL configuration in the SIB1 of the adjacent cell is config#0, and the DL reference UL/DL configuration of the adjacent cell is config #2". After the terminal receives the above-mentioned uplink and downlink time slot configuration information, since the downlink subframe in the TDD UL/DL configuration in SIB1 is fixed, and the uplink subframe in the DL reference UL/DL configuration is fixed, therefore, the neighboring cell base station When dynamically adjusting the uplink and downlink time slot ratio for neighboring terminals, it can only be configured from a time slot that satisfies the requirement that the downlink time slot in the TDD UL/DL configuration in SIB1 is fixed and the uplink time slot in the DL reference UL/DL configuration is fixed. That is, the subframe that satisfies #7 is selected in the time slot configuration of the uplink subframe. According to Table 1, there are configurations #0, #1, #2 and #6 (in the black dotted line box in Figure 5b) that meet this condition. four configurations), that is to say, even if the adjacent cell base station dynamically adjusts the uplink and downlink time slot ratio for the adjacent cell terminal, it can only choose among configuration #0, configuration #1, configuration #2, and configuration #6. Compare configuration # 0. Configuration #1, configuration #2, and configuration #6 show that the subframe types of subframes with subframe numbers #6 and #7 are determined, #6 is a special subframe, #7 is an uplink subframe, and #3 subframe, #4 subframe, #8 subframe and #9 subframe may be both uplink subframe and downlink subframe, therefore, the terminal needs to check #3 subframe, #4 subframe, #8 subframe The frame and the #9 subframe perform blind detection to determine whether it is a downlink subframe. Compared with the terminal that needs to blindly detect 6 subframes, it reduces the complexity of the terminal blind detection and saves terminal processing resources.

Taking the subframe type that the base station notifies the terminal of the adjacent cell of the adjacent cell as an example, the base station first determines the subframe type corresponding to each subframe of the adjacent cell, similar to the above description, because the TDD UL/DL configuration in SIB1 The downlink subframe is fixed, and the uplink subframe of DL reference UL/DL configuration is fixed. Therefore, when the base station in the neighboring cell dynamically adjusts the uplink and downlink time slot ratio for the terminals in the neighboring cell, it can only satisfy the SIB1 The downlink time slot in the TDD UL/DL configuration is fixed and the uplink time slot of the DL reference UL/DL configuration is selected in the time slot configuration, that is, the subframe that satisfies #7 is selected in the time slot configuration of the uplink subframe, according to Table 1 It can be seen that there are configurations #0, #1, #2 and #6 (the four configurations in the black dotted box in Figure 5b) that meet this condition, that is to say, even if the neighboring cell base station dynamically adjusts the uplink and downlink time slot configuration for the neighboring cell terminal Compared with configuration #0, configuration #1, configuration #2 and configuration #6, it can only be selected among configuration #0, configuration #1, configuration #2 and configuration #6. The subframe numbers are #6, # The subframe type of the subframe 7 is determined, #6 is a special subframe, #7 is an uplink subframe, and #3 subframe, #4 subframe, #8 subframe and #9 subframe may both be uplink The subframe may also be a downlink subframe, therefore, the base station may use any of the following methods to notify the terminal of the subframe type information of the adjacent cell subframe "01 1110 00 00 01 11 10 00 00" or "DSUFFDSUFF". Specifically, the base station may carry the subframe type information of the adjacent cell subframe in the signaling interacted with the terminal. According to the subframe type information of the adjacent cell subframe notified by the base station, the terminal performs blind detection on #3 subframe, #4 subframe, #8 subframe and #9 subframe to determine whether each subframe is a downlink subframe .

As shown in Fig. 5c, it is a schematic diagram of the third kind of adjacent cell uplink and downlink configuration information. The neighbor cell base station notifies the base station of the uplink and downlink time slot configuration information of the neighbor cell as follows: "The TDD UL/DL configuration in SIB1 is config#0, and the DLreference UL/DL configuration of the neighbor cell is config#4".

Taking the base station directly notifying the terminal of the up-down time slot configuration information of the adjacent cell as an example, the base station notifies the UE in the local area: "The TDD UL/DL configuration in the SIB1 of the adjacent cell is config#0, and the DL reference UL/DL configuration of the adjacent cell is config #4". After the terminal receives the above-mentioned uplink and downlink time slot configuration information, since the downlink subframe in the TDD UL/DL configuration in SIB1 is fixed, and the uplink subframe in the DL reference UL/DL configuration is fixed, therefore, the neighboring cell base station When dynamically adjusting the uplink and downlink time slot ratios for terminals in neighboring cells, only the downlink time slots in the TDD UL/DL configuration in SIB1 are fixed and the uplink time slots in the DL reference UL/DL configuration are fixed. Selected in the configuration, that is, the subframes satisfying #3 and #4 are selected in the time slot configuration of the uplink subframe. According to Table 1, configurations #0, #1, #3, #4 and #6 ( The five configurations in the black dotted line box in Figure 5c), that is to say, even if the adjacent cell base station dynamically adjusts the uplink and downlink time slot ratio for the adjacent cell terminal, it can only be configured in configuration #0, configuration #1, configuration #3, configuration # 4 and configuration #6, and comparing configuration #0, configuration #1, configuration #3, configuration #4 and configuration #6, it can be seen that the subframe type of the subframe whose subframe number is #3 is determined, and #3 is Uplink subframes, and #4 subframes, #6 subframes, #7 subframes, #8 subframes and #9 subframes may be uplink subframes or downlink subframes, therefore, the terminal needs to Frame, #6 subframe, #7 subframe, #8 subframe and #9 subframe carry out blind detection to determine whether it is a downlink subframe, thus, compared with the terminal needing to blindly detect 6 subframes, it reduces the terminal The complexity of blind detection saves terminal processing resources.

Taking the subframe type that the base station notifies the terminal of the adjacent cell of the adjacent cell as an example, the base station first determines the subframe type corresponding to each subframe of the adjacent cell, similar to the above description, because the TDD UL/DL configuration in SIB1 The downlink subframe is fixed, and the uplink subframe of DL reference UL/DL configuration is fixed. Therefore, when the base station in the neighboring cell dynamically adjusts the uplink and downlink time slot ratio for the terminals in the neighboring cell, it can only satisfy the SIB1 The downlink time slot in the TDD UL/DL configuration is fixed and the uplink time slot of the DL reference UL/DL configuration is selected in the time slot configuration, that is, the #3 and #4 subframes are selected in the time slot configuration of the uplink subframe, According to Table 1, configurations #0, #1, #3, #4, and #6 (the five configurations in the black dashed box in Figure 5c) satisfy this condition, that is to say, even if the neighboring cell base station is a dynamic To adjust the ratio of uplink and downlink time slots, you can only choose among configuration #0, configuration #1, configuration #3, configuration #4, and configuration #6, and compare configuration #0, configuration #1, configuration #3, and configuration #4 And configuration #6 shows that the subframe type of the subframe whose subframe number is #3 is determined, #3 is an uplink subframe, and #4 subframe, #6 subframe, #7 subframe, #8 subframe and #9 subframes may be either uplink subframes or downlink subframes. Therefore, the base station can use any of the following methods to notify the terminal of the subframe type information of the adjacent cell subframe "01 11 10 10 00 01 00 00 00 00" Or "DSUUFDFFFF". Specifically, the base station may carry the subframe type information of the adjacent cell subframe in the signaling interacted with the terminal. According to the subframe type of the adjacent cell subframe notified by the base station, the terminal performs blind detection on #4 subframe, #6 subframe, #7 subframe, #8 subframe and #9 subframe to determine whether each subframe is is the downlink subframe.

In the network-assisted terminal blind detection method provided by the embodiment of the present invention, after the base station receives the adjacent cell uplink and downlink time slot configuration information sent by the neighboring cell base station, it can directly send it to the terminal, and the terminal can determine which ones need to be blindly detected. Subframes, the base station can also first determine which subframe types are determined and which subframe types are uncertain, and notify the terminal of the subframe type of each subframe, and the terminal only needs to determine the type of subframe for which the subframe type is uncertain The subframe can be blindly detected, which greatly reduces the complexity of terminal blind detection and saves processing resources of the terminal.

Based on the same inventive concept, embodiments of the present invention also provide a network-assisted terminal blind detection device and equipment implemented on the network side, a network-assisted terminal blind detection device and equipment implemented on the terminal side, and a network-assisted terminal blind detection device. system, because the principle of the above-mentioned device, equipment and system to solve the problem is similar to the method of network-assisted terminal blind detection implemented by the network side and the method of network-assisted terminal blind detection implemented by the terminal side, so the implementation of the above-mentioned device, device, and system can be Refer to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 6, it is a schematic structural diagram of the first network-assisted terminal blind detection device provided by the embodiment of the present invention, including:

The receiving unit 61 is configured to receive the uplink and downlink time slot configuration information of the neighboring cell sent by the neighboring cell base station;

The notification unit 62 is configured to notify the terminal in the local area of blind detection related information, the blind detection related information is determined according to the uplink and downlink time slot configuration information of the neighboring cell.

During specific implementation, the blind detection related information is the uplink and downlink time slot configuration information of the neighboring cell, and the uplink and downlink time slot configuration information of the neighboring cell includes TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1.

Based on this, the notification unit 62 may be used to notify the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1 of the terminal in the local cell.

During specific implementation, the first device for network-assisted terminal blind detection provided by the embodiment of the present invention may further include a determining unit, wherein: the determining unit may be configured to, according to the TDD UL/DL configuration information and DL reference UL/DL configuration information, respectively determine the subframe type of each subframe of the adjacent cell; and determine the subframe type information of each subframe of the adjacent cell as the blind detection related information; the notification unit 62 can use In a manner previously agreed with the terminal in the local area, the terminal in the local area is notified of the determined subframe type of each subframe in the neighboring cell.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described separately. Of course, when implementing the present invention, the functions of each module (or unit) can be implemented in one or more pieces of software or hardware.

During specific implementation, the above-mentioned first device for network-assisted terminal blind detection may be set in a base station.

As shown in Figure 7, the second network-assisted terminal blind detection device provided by the embodiment of the present invention includes:

A receiving unit 71, configured to receive blind detection related information sent by the network side;

Wherein, the blind detection related information is determined by the network side according to the adjacent cell uplink and downlink time slot configuration information sent by the adjacent cell base station.

The blind detection unit 72 is configured to determine an unknown type of adjacent cell subframe according to the blind detection related information, and perform blind detection on the unknown type of adjacent cell subframe.

Wherein, the uplink and downlink time slot configuration information of the neighboring cell is TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1.

If the blind detection related information received by the terminal is the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB1, the blind detection unit 72 can be used to and DL reference UL/DL configuration information to determine the unknown type of adjacent cell subframe; perform blind detection on the determined unknown type of adjacent cell subframe.

Preferably, the blind detection related information can also be the subframe type information of each subframe of the adjacent cell determined by the network side according to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the adjacent cell SIB1, in After the receiving unit 71 receives the blind detection related information, the blind detection unit 72 can be used to determine the unknown type of adjacent cell subframe according to the subframe type information of each subframe of the adjacent cell, and perform blind detection on the unknown type of adjacent cell subframe. check to determine whether it is a downlink subframe.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described separately. Certainly, when implementing the present invention, the functions of each module (or unit) can be implemented in one or more pieces of software or hardware.

During specific implementation, the above-mentioned first device for network-assisted terminal blind detection may be set in the terminal.

As shown in Figure 8, the system for network-assisted terminal blind detection provided by the embodiment of the present invention includes a base station 81 and a terminal 82, wherein the base station 81 is provided with the above-mentioned first network-assisted terminal blind detection device, and the terminal 82 is provided with There is the above-mentioned second network-assisted terminal blind detection device.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and a combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the present invention have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (15)

1. A method for assisting a terminal in blind detection by a network is characterized by comprising the following steps:

receiving adjacent cell uplink and downlink time slot configuration information sent by an adjacent cell base station;

informing a terminal of a local region of blind test related information, wherein the blind test related information is determined according to uplink and downlink time slot configuration information of the adjacent region, so that the terminal determines an adjacent region subframe of an unknown type according to the blind test related information and carries out blind test on the adjacent region subframe of the unknown type;

the configuration information of the uplink and downlink time slots of the neighboring cell comprises time division duplex uplink and downlink time slot configuration TDD UL/DL configuration information in a neighboring cell system information block SIB1 and downlink reference uplink and downlink time slot configuration DL reference UL/DL configuration information used for enhancing eIMTA of the small cell;

the blind detection related information is TDD UL/DL configuration information and DLreference UL/DL configuration information in the neighbor SIB 1; or, determining the blind detection related information according to the following method: respectively determining the subframe type of each subframe of the adjacent region according to the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the SIB1 of the adjacent region; and determining the subframe type information of each subframe of the adjacent region as the blind detection related information.

2. The method of claim 1,

notifying the terminal of the local area of the blind test related information, including:

and informing the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the local terminal neighboring SIB 1.

3. The method of claim 1, wherein notifying the local terminal of the blind test related information comprises:

and informing the local terminal of the determined subframe type of each subframe of the adjacent cell in a mode predetermined with the local terminal.

4. An apparatus for assisting a terminal in blind detection in a network, comprising:

the receiving unit is used for receiving the configuration information of the uplink and downlink time slots of the adjacent region sent by the base station of the adjacent region; the neighboring cell uplink and downlink time slot configuration information includes time division duplex uplink and downlink time slot configuration TDD UL/DL configuration information in a neighboring cell system information block SIB1 and downlink reference uplink and downlink time slot configuration DL preferencel/DL configuration information for small cell enhanced eIMTA;

a notification unit, configured to notify a terminal of a current cell of blind test related information, where the blind test related information is determined according to uplink and downlink timeslot configuration information of the neighboring cell, so that the terminal determines a subframe of the neighboring cell of an unknown type according to the blind test related information, and performs blind test on the subframe of the neighboring cell of the unknown type;

the relevant information of the blind test is uplink and downlink time slot configuration information of the adjacent region; or,

the apparatus further comprises a determination unit, wherein:

the determining unit is configured to determine a subframe type of each subframe of the neighboring cell according to the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the neighboring cell SIB 1; and determining the subframe type information of each subframe of the adjacent region as the blind detection related information.

5. The apparatus of claim 4,

the notifying unit is specifically configured to notify the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the terminal neighboring cell SIB1 of the local cell.

6. The apparatus of claim 4,

the notifying unit is specifically configured to notify the terminal in the local area of the subframe type of each subframe of the neighboring cell determined by the terminal in the local area in a manner agreed in advance with the terminal in the local area.

7. A base station, characterized in that it comprises the apparatus of claim 4, 5 or 6.

8. A method for assisting a terminal in blind detection by a network is characterized by comprising the following steps:

receiving blind test related information sent by a network side; the relevant information of the blind test is determined by the network side according to the uplink and downlink time slot configuration information of the adjacent cell sent by the adjacent cell base station; the configuration information of the uplink and downlink time slots of the adjacent region is TDD UL/DL configuration information and DL reference UL/DL configuration information in an SIB1 of the adjacent region; the blind detection related information is TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighbor SIB 1; or, the blind detection related information is subframe type information of each subframe of the neighboring cell determined by the network side according to the tdd UL/DL configuration information and the DL reference UL/DL configuration information in the neighboring cell SIB 1;

and determining the adjacent subframe of unknown type according to the relevant information of blind test, and carrying out blind test on the adjacent subframe of unknown type.

9. The method of claim 8, wherein determining the neighbor subframe of unknown type according to the blind detection related information comprises:

and determining the neighbor subframes of unknown types according to the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the neighbor SIB 1.

10. The method of claim 8,

determining the adjacent cell subframe of unknown type according to the blind detection related information, comprising:

and determining the adjacent region subframe of unknown type according to the subframe type information of each subframe of the adjacent region.

11. An apparatus for assisting a terminal in blind detection in a network, comprising:

the receiving unit is used for receiving the blind test related information sent by the network side; the relevant information of the blind test is determined by the network side according to the uplink and downlink time slot configuration information of the adjacent cell sent by the adjacent cell base station; the configuration information of the uplink and downlink time slots of the adjacent region is TDD UL/DL configuration information and DL reference UL/DL configuration information in an adjacent region SIB 1; the blind detection related information is TDD UL/DL configuration information and DL referrence UL/DL configuration information in the neighbor SIB 1; or, the blind detection related information is subframe type information of each subframe of the neighboring cell determined by the network side according to the TDD UL/DL configuration information and DL reference UL/DL configuration information in the neighboring cell SIB 1;

and the blind detection unit is used for determining the adjacent subframe of unknown type according to the relevant blind detection information and carrying out blind detection on the adjacent subframe of unknown type.

12. The apparatus of claim 11,

the blind detection unit is specifically configured to determine an unknown type of neighbor subframe according to the TDD UL/DL configuration information and the DL reference UL/DL configuration information in the neighbor SIB 1.

13. The apparatus of claim 11,

the blind detection unit is specifically configured to determine an unknown-type neighbor subframe according to subframe type information of each subframe of a neighbor.

14. A terminal, characterized in that it comprises the apparatus of claim 11, 12 or 13.

15. A system for assisting a terminal in blind detection through a network, comprising a base station and a terminal, wherein the apparatus of claim 4, 5 or 6 is disposed in the base station, and the apparatus of claim 11, 12 or 13 is disposed in the terminal.