CN101772222B - Method and system for obtaining MBSFN configuration information of affiliated subdistrict of adjacent base station - Google Patents
Method and system for obtaining MBSFN configuration information of affiliated subdistrict of adjacent base station Download PDFInfo
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Abstract
The invention discloses a method for obtaining multimedia broadcast multicast service single frequency network (MBSFN) configuration information of an affiliated subdistrict of an adjacent base station, which realizes the effect of obtaining the MBSFN configuration information of the affiliated subdistrict of the adjacent base station by the base station through adopting a method based on configuration updating signaling between the base stations, or based on the interaction between a multimedia broadcast multicast service coordinating functional entity (MCE) and the base stations, or based on the interaction between the base stations and UE. The invention also discloses a system for obtaining the MBSFN configuration information of the affiliated subdistrict of the adjacent base station, which realizes the effects that the base station can obtain the MBSFN configuration information of the affiliated subdistrict of the adjacent base station, at the same time, the invention ensures that the user equipment (UE) can carry out the effective signal channel estimation and measurement according to the MBSFN configuration information of the adjacent subdistrict obtained by the base station.
Description
Technical Field
The present invention relates to a terminal channel measurement technique in mobile communication, and in particular, to a method and system for acquiring multimedia broadcast multicast service single frequency network (MBSFN) configuration information of an adjacent cell.
Background
With The development of network architecture flattening and The emergence of various high-speed broadband mobile access modes, an evolved wireless communication system is enabled to provide higher transmission rate, shorter transmission delay and lower cost, and also support mobility between The 3rd generation partnership Project (3 GPP) internal access systems, mobility between a 3GPP access system and a non-3 GPP access system, and The like.
In a next generation Architecture of Long Term Evolution (LTE)/System Architecture Evolution (SAE) proposed by a mobile communication network, a Multimedia Broadcast Multicast Service (MBMS) framework is shown in fig. 1, and the MBMS framework includes network elements: multimedia broadcast multicast service gateway (MBMS-GW), multimedia broadcast multicast service Coordination function Entity (MCE), and base station (eNB, Evolved NodeB). The MBMS-GW is used as a node between the broadcast multicast service center and the eNB, is an access gateway of a network, is responsible for processing messages related to user data and signaling related to conversation, and can also realize synchronization between the MBMS-GW and the eNB. The MCE is mainly used for selecting proper resources for the MBMS service, and comprises parameters such as frequency, time and the like; the method is used for constructing a proper multimedia broadcast multicast service Single Frequency Network (MBSFN, MBMS Single Frequency Network) and carrying out MBSFN transmission; for multiple MBMS services, the MCE needs to coordinate multiple MBSFN transmissions corresponding to the services, including MBSFN area size, use of radio resources, etc., so as to use the resources reasonably and efficiently. An interface M1 between the MBMS-GW and the eNB belongs to a User Plane (UP) interface and adopts a transmission mode of Internet Protocol (IP) multicast; an interface M2 between the MCE and the eNB and an interface M3 between the MBMS-GW and the MCE both belong To a Control Plane (CP, Control Plane) interface, and use a Point-To-Point (PTP, Point To Point) transmission method.
The transmission of MBMS services in LTE/SAE can be divided into two categories: one is MBSFN transmission and the other is non-MBSFN transmission. For MBSFN transmission, the MCE is responsible for allocating resources, constructing a proper MBSFN and performing MBSFN transmission. Since the MBSFN reference signal is transmitted only in a specific time slot, and the eNB does not transmit the cell-specific reference signal in the time slot, for a User Equipment (UE) supporting the MBMS, the MBSFN reference signal needs to be detected in the specific time slot in order to perform channel estimation and measurement of the MBMS service; for the UE not supporting MBMS, it is necessary to avoid the specific timeslot of MBSFN and detect the cell-specific reference signal or synchronization signal to obtain correct channel estimation and measurement results.
According to the above channel estimation and measurement operations, it is known that, no matter the UE supports the MBMS or the UE does not support the MBMS, it is necessary to know the configuration information about the MBSFN of the cell where the UE is located and the neighboring cells in advance, so as to perform effective channel estimation and measurement. In the existing protocol, a base station can provide the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs to the UE in the cell to which the base station belongs, but the existing technology cannot solve the problem of how the base station obtains the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for acquiring MBSFN configuration information of a cell to which a neighboring base station belongs, so as to solve the problem that the base station in the prior art cannot acquire the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for acquiring MBSFN configuration information of a cell to which an adjacent base station belongs, which comprises the following steps:
a target base station receives configuration updating signaling from all adjacent source base stations and extracts MBSFN configuration information of a cell to which the source base station belongs from the configuration updating signaling, wherein the source base station is an initiator of the configuration updating signaling; whether the cell to which the source base station belongs has the MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the cell to which the source base station belongs and the time slot distribution of the MBSFN subframe;
and the target base station updates the MBSFN configuration information of the adjacent cell of the cell to which the target base station belongs according to the MBSFN configuration information of the cell to which the source base station belongs.
The updating of the MBSFN configuration information of the adjacent cell of the cell to which the mobile terminal belongs means updating the MBSFN configuration information of the adjacent cell in the system message of the cell to which the mobile terminal belongs.
The updating of the MBSFN configuration information of the neighboring cell of the cell to which the UE belongs refers to updating the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell to which the UE belongs.
And the frequency of the MBSFN subframe in the MBSFN configuration information is a difference value between the frequency of the MBSFN subframe of the cell to which the source base station belongs and the frequency of the MBSFN subframe of the cell to which the target base station belongs.
And the time slot distribution of the MBSFN sub-frame in the MBSFN configuration information is a difference value between the time slot distribution of the MBSFN sub-frame of the cell to which the source base station belongs and the time slot distribution of the MBSFN sub-frame of the cell to which the target base station belongs.
The invention also provides a system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which comprises the following steps: neighboring source base station and target base station, wherein,
the source base station is used for sending a configuration updating instruction carrying MBSFN configuration information of a cell to which the source base station belongs to the target base station, and the source base station is an initiator of a configuration updating signaling; whether the cell to which the source base station belongs has the MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the cell to which the source base station belongs and the time slot distribution of the MBSFN subframe;
and the target base station is used for updating the MBSFN configuration information of the adjacent cell of the cell to which the target base station belongs according to the MBSFN configuration information of the cell to which the source base station belongs, which is carried in the configuration updating instructions of all the adjacent source base stations.
The target base station can also update MBSFN configuration information about the adjacent cells in the measurement configuration of the UE in the connected state in the cell to which the target base station belongs.
The invention also provides a method for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which comprises the following steps:
a base station receives MBSFN configuration information of all adjacent cells of a cell to which the base station belongs, wherein the MBSFN configuration information is transmitted by the MCE; whether MBSFN configuration exists in a cell adjacent to a cell to which the base station belongs is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of MBSFN sub-frames of the adjacent cells of the cell to which the base station belongs and the time slot distribution of the MBSFN sub-frames are distributed;
and the base station updates the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information transmitted by the MCE.
The updating of the MBSFN configuration information of the neighboring cell of the cell to which the cell belongs refers to updating the MBSFN configuration information of the neighboring cell in the system message of the cell to which the cell belongs.
The updating of the MBSFN configuration information of the neighboring cell of the cell to which the UE belongs refers to updating the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell to which the UE belongs.
The MCE also transmits MBSFN configuration information of a cell to which the base station belongs.
And the frequency of the MBSFN subframe of the adjacent cell in the MBSFN configuration information is a difference value between the frequency of the MBSFN subframe of the adjacent cell and the frequency of the MBSFN subframe of the cell to which the base station belongs.
And the time slot distribution of the MBSFN subframe of the adjacent cell in the MBSFN configuration information is a difference value between the time slot distribution of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe of the cell to which the base station belongs.
The invention also provides a system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which comprises the following steps: an MCE and a base station connected to each other, wherein,
the MCE is used for transmitting MBSFN configuration information of all adjacent cells of a cell to which the base station belongs to a base station; whether MBSFN configuration exists in a cell adjacent to a cell to which the base station belongs is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of MBSFN sub-frames of the adjacent cells of the cell to which the base station belongs and the time slot distribution of the MBSFN sub-frames are distributed;
and the base station is used for updating the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information of the adjacent cell.
The base station is also used for updating MBSFN configuration information about the adjacent cells in the measurement configuration of the UE in the connected state in the cell to which the base station belongs.
The invention also provides a method for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which comprises the following steps:
UE in a base station detects adjacent cells of a cell to which the UE belongs and reports the identification of the adjacent cells to the base station;
the base station sends the identifier of the adjacent cell which is to acquire the MBSFN configuration information to the UE;
the UE acquires MBSFN configuration information of the adjacent cell corresponding to the identifier by reading a signaling of a network side and reports the MBSFN configuration information to the base station; whether MBSFN configuration exists in the adjacent cells is identified in the MBSFN configuration information, and the MBSFN configuration information is null when the MBSFN configuration does not exist in the identification; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe are distributed;
the base station updates the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information of the adjacent cell reported by the UE; the MBSFN configuration information is used for UE in the base station to detect MBSFN reference signals of adjacent cells with MBSFN configuration so as to execute channel estimation and measurement of MBMS service.
The updating of the MBSFN configuration information of the neighboring cell of the cell to which the cell belongs refers to updating the MBSFN configuration information of the neighboring cell in the system message of the cell to which the cell belongs.
The updating of the MBSFN configuration information of the neighboring cell of the cell to which the UE belongs refers to updating the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell to which the UE belongs.
Before the UE detects a neighboring cell of a cell to which the UE belongs, the method further includes: the base station informs the UE to detect neighboring cells at a particular frequency or set of frequencies.
And the frequency of the MBSFN subframe in the MBSFN configuration information is a difference value between the frequency of the MBSFN subframe of the adjacent cell and the frequency of the MBSFN subframe of the cell to which the base station belongs.
And the time slot distribution of the MBSFN sub-frames in the MBSFN configuration information is a difference value between the time slot distribution of the MBSFN sub-frames of the adjacent cells and the time slot distribution of the MBSFN sub-frames of the cell to which the base station belongs.
The invention also provides a system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which comprises the following steps: a UE and a base station; wherein,
the UE is positioned in the cell to which the base station belongs and is used for detecting the adjacent cell of the cell to which the UE belongs to obtain the identifier of the adjacent cell and reporting the identifier to the base station; acquiring MBSFN configuration information of an adjacent cell corresponding to the identifier by reading a signaling of a network side according to the identifier sent by the base station, and reporting the MBSFN configuration information to the base station; whether MBSFN configuration exists in the adjacent cells is identified in the MBSFN configuration information, and the MBSFN configuration information is null when the MBSFN configuration does not exist in the identification; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe are distributed;
the base station is used for sending the identifier of the adjacent cell which is to acquire the MBSFN configuration information to the UE according to the identifier of the adjacent cell reported by the UE; updating the MBSFN configuration information of the adjacent cell of the cell to which the UE belongs according to the MBSFN configuration information of the adjacent cell corresponding to the identifier reported by the UE; the MBSFN configuration information is used for UE in the base station to detect MBSFN reference signals of adjacent cells with MBSFN configuration so as to execute channel estimation and measurement of MBMS service.
The base station is also used for updating MBSFN configuration information about the adjacent cells in the measurement configuration of the UE in the connected state in the cell to which the base station belongs.
The base station is further configured to inform the UE to detect neighboring cells at a particular frequency or set of frequencies.
The method and the system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs adopt a mode of updating signaling based on the configuration between the base stations, or based on the interaction between MCE and the base stations, or based on the interaction between the base stations and UE, so that the base stations acquire the MBSFN configuration information of the cell to which the adjacent base station belongs, and the UE is ensured to carry out effective channel estimation and measurement according to the MBSFN configuration information of the cell to which the adjacent base station belongs acquired by the base stations.
Drawings
FIG. 1 is a diagram of an MBMS framework under an LTE/SAE architecture in the prior art;
FIG. 2 is a flowchart of a first method for acquiring MBSFN configuration information of a cell to which an adjacent base station belongs according to the present invention;
fig. 3 is a schematic layout diagram of a base station under an LTE architecture according to a first embodiment of the present invention;
FIG. 4 is a flowchart of a second method for acquiring MBSFN configuration information of a cell to which an adjacent base station belongs according to the present invention;
FIG. 5 is a flowchart of a third method for acquiring MBSFN configuration information of a cell to which an adjacent base station belongs according to the present invention;
fig. 6 is a schematic layout diagram of a base station under an LTE architecture according to a second embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
Aiming at solving the problem how to obtain the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs, the method for obtaining the MBSFN configuration information of the cell to which the adjacent base station belongs can be divided into three types: the first type is a method implemented based on configuration update signaling between base stations; the second type is a method implemented based on interaction between the MCE and the base station; the third type is a method implemented based on interaction between a base station and a UE.
A first method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs, which is implemented based on configuration update signaling between base stations, as shown in fig. 2, includes the following steps:
In the embodiment shown in fig. 2, the initiator of the configuration update signaling is referred to as a source base station, and the receiver of the configuration update signaling is referred to as a target base station. In practical applications, each base station can implement the functions of both the source base station and the target base station.
In the architecture of SAE/LTE, base stations are interconnected in a mesh manner through an X2 interface, and an X2 interface is used for transferring signaling and data between the base stations. The source base station sends a configuration update signaling to the target base station through an X2 interface, wherein the signaling includes MBSFN configuration information of a cell to which the source base station belongs, and can also include identification, frequency point and bandwidth information of the cell to which the source base station belongs. Whether the cell to which the source base station belongs has the MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: and the frequency of the MBSFN subframe of the cell to which the source base station belongs and the time slot distribution of the MBSFN subframe. In addition, if the source base station has already obtained the MBSFN configuration information of the target base station in advance, the MBSFN configuration information may be a difference value between the MBSFN configuration information of the source base station and the MBSFN configuration information of the target base station, specifically: the frequency of the MBSFN subframe in the MBSFN configuration information is a difference value between the frequency of the MBSFN subframe of the cell to which the source base station belongs and the frequency of the MBSFN subframe of the cell to which the target base station belongs; and the time slot distribution of the MBSFN sub-frame in the MBSFN configuration information is a difference value between the time slot distribution of the MBSFN sub-frame of the cell to which the source base station belongs and the time slot distribution of the MBSFN sub-frame of the cell to which the target base station belongs.
After the MBSFN configuration information about the neighboring cell in the measurement configuration of the UE is updated, the UE in the cell to which the target base station belongs can effectively control the frequency and time slot for initiating the channel estimation and measurement of the neighboring cell according to the updated MBSFN configuration information of the neighboring cell. For example: the UE1 in the target base station supports MBMS, then the UE1 needs to detect the MBSFN reference signal of the neighboring cell where the MBSFN configuration exists in the specific time slot of the MBSFN, so as to perform channel estimation and measurement of the MBMS service; if the UE2 in the target base station does not support MBMS, the UE2 needs to avoid the specific time slot of MBSFN and detect the cell specific reference signal or synchronization signal of the neighboring cell in other time slots to obtain correct channel estimation and measurement results.
The method shown in fig. 2 is further described in detail below with reference to specific embodiments. In the base station layout diagram of the first embodiment shown in fig. 3, 3 base stations are included, and the base stations are connected through an X2 interface, where base station 1 is a source base station, and base stations 2 and 3 are target base stations.
The base station 1 sends a configuration updating signal to the base station 2 through an X2 interface, wherein the signal comprises MBSFN configuration information of a cell to which the base station 1 belongs; after receiving the signaling and acquiring the MBSFN configuration information of the cell to which the base station 1 belongs, the base station 2 updates the MBSFN configuration information of the neighboring cell in the cell system message to which the base station 2 belongs, and also updates the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in a connected state in the cell to which the base station 2 belongs.
Similarly, the base station 1 sends a configuration update signaling to the base station 3 through an X2 interface, where the signaling includes MBSFN configuration information of a cell to which the base station 1 belongs; after receiving the signaling and acquiring the MBSFN configuration information of the cell to which the base station 1 belongs, the base station 3 updates the MBSFN configuration information of the neighboring cell in the cell system message to which the base station 3 belongs, and also updates the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in a connected state in the cell to which the base station 3 belongs.
The system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs to realize the method shown in FIG. 2 comprises a source base station and a target base station. And the source base station is used for sending a configuration updating instruction carrying the MBSFN configuration information of the cell to which the source base station belongs to the target base station. And the target base station is used for updating the MBSFN configuration information of the adjacent cell in the cell system message of the target base station according to the MBSFN configuration information of the cell to which the source base station belongs, which is carried in the configuration updating instruction, and can also update the MBSFN configuration information of the adjacent cell in the measurement configuration of the UE in a connection state in the cell to which the target base station belongs.
A second method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs, which is implemented based on interaction between an MCE and the base station, as shown in fig. 4, includes the following steps:
Because the MCE grasps the network topology, the MCE can acquire the MBSFN configuration information of the cell to which each base station belongs and the neighboring cells thereof in the network topology. Whether the cell to which the base station belongs and the adjacent cell have MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the cell to which the base station belongs is identified to have the MBSFN configuration, the MBSFN configuration information comprises the following components: the frequency of the MBSFN subframe of the cell to which the base station belongs and the time slot distribution of the MBSFN subframe; when the MBSFN configuration exists in the neighboring cell for identifying the cell to which the base station belongs, the MBSFN configuration information includes: the frequency of MBSFN sub-frames of the adjacent cells of the cell to which the base station belongs and the time slot distribution of the MBSFN sub-frames.
In addition, the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs may also be a difference value between the MBSFN configuration information of the cell to which the base station belongs and the MBSFN configuration information of the neighboring cell, specifically: the frequency of the MBSFN subframe in the MBSFN configuration information of the adjacent cell is the difference value between the frequency of the MBSFN subframe of the adjacent cell and the frequency of the MBSFN subframe of the cell to which the base station belongs; and the time slot distribution of the MBSFN sub-frames in the MBSFN configuration information of the adjacent cell is a difference value between the time slot distribution of the MBSFN sub-frames of the adjacent cell and the time slot distribution of the MBSFN sub-frames of the cell to which the base station belongs.
The system for acquiring the MBSFN configuration information of the adjacent cell provided by the method for realizing the method shown in the figure 4 comprises an MCE and a base station. And the MCE is used for transmitting the MBSFN configuration information of the cell to which the base station belongs and the adjacent cells thereof to the base station. And the base station is used for updating the MBSFN configuration information of the adjacent cell in the cell system message of the base station according to the MBSFN configuration information of the adjacent cell and can also update the MBSFN configuration information of the adjacent cell in the measurement configuration of the UE in a connected state in the cell of the base station.
A third method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs, which is implemented based on interaction between the base station and the UE, as shown in fig. 5, includes the following steps:
In the invention, the operation of the UE for detecting the adjacent cell of the cell to which the UE belongs can be initiated by the UE actively or can be executed by triggering the UE by the base station. The specific operation that the base station triggers the UE to execute is as follows: the base station informs the UE to detect the adjacent cells in the specific frequency or frequency set, and the UE performs detection on the adjacent cells of the cell to which the UE belongs in the specific frequency or frequency set according to the notification of the base station and reports the identification of the detected adjacent cells to the base station.
And the base station sends the identifier of the adjacent cell of the MBSFN configuration information to be acquired to the UE according to the requirement. The base station may transmit one identifier at a time, or may transmit a plurality of identifiers.
Whether the MBSFN configuration exists in the adjacent cell is identified in the MBSFN configuration information of the adjacent cell, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe.
In addition, the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs may also be a difference value between the MBSFN configuration information of the cell to which the base station belongs and the MBSFN configuration information of the neighboring cell, specifically: the frequency of the MBSFN subframe in the MBSFN configuration information of the adjacent cell is the difference value between the frequency of the MBSFN subframe of the adjacent cell and the frequency of the MBSFN subframe of the cell to which the base station belongs; and the time slot distribution of the MBSFN sub-frames in the MBSFN configuration information of the adjacent cell is a difference value between the time slot distribution of the MBSFN sub-frames of the adjacent cell and the time slot distribution of the MBSFN sub-frames of the cell to which the base station belongs.
The method shown in fig. 5 is further described in detail below with reference to specific embodiments. In the base station layout diagram of the second embodiment shown in fig. 6, the base station includes a base station 1, a base station 2, and a base station 3, and the UE is in a cell 1 to which the base station 1 belongs. The specific process initiated by the base station 1 for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs is as follows: the base station 1 informs the UE whether a neighboring cell exists in a specific frequency detection; the UE detects a cell 2 to which the base station 2 belongs and a cell 3 to which the base station 3 belongs, and reports the identifications of the cell 2 and the cell 3 to the base station 1; the base station 1 informs the UE to acquire MBSFN configuration information of the cell 2; the UE acquires the MBSFN configuration information of the cell 2 by reading the signaling of the network side, the configuration information shows that the cell 2 is not configured with the MBSFN, and the UE reports the MBSFN configuration information of the cell 2 to the base station 1; after the base station 1 obtains the MBSFN configuration information of the cell 2, the MBSFN configuration information of the neighboring cell in the system message of the cell 1 is updated, and the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell 1 can also be updated. At a certain subsequent time, the base station 1 informs the UE to acquire the MBSFN configuration information of the cell 3; the UE acquires the MBSFN configuration information of the cell 3 by reading the signaling of the network side, wherein the configuration information comprises the frequency of the MBSFN subframe of the cell 3 and the time slot distribution of the MBSFN subframe, and the UE reports the MBSFN configuration information of the cell 3 to the base station 1; after the base station 1 obtains the MBSFN configuration information of the cell 3, the MBSFN configuration information of the neighboring cell in the system message of the cell 1 is updated, and the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell 1 can also be updated.
The UE updating the MBSFN configuration information of the neighboring cell may alternatively detect the cell-specific reference signal of the neighboring cell or detect the MBSFN reference signal located in the MBSFN slot, so as to perform correct channel estimation and measurement.
The system for acquiring the MBSFN configuration information of the cell to which the adjacent base station belongs, which is provided for realizing the method shown in FIG. 5, comprises the UE and the base station. The UE is positioned in the cell to which the base station belongs and is used for detecting the adjacent cell of the cell to which the UE belongs to obtain the identifier of the adjacent cell and reporting the identifier to the base station; and acquiring MBSFN configuration information of an adjacent cell corresponding to the identifier by reading a signaling of the network side according to the identifier sent by the base station, and reporting the MBSFN configuration information to the base station. The base station is used for sending the identifier of the adjacent cell which is to acquire the MBSFN configuration information to the UE according to the identifier of the adjacent cell reported by the UE; updating the MBSFN configuration information of the adjacent cell in the cell system message of the cell to which the UE belongs according to the MBSFN configuration information of the adjacent cell corresponding to the identifier reported by the UE, and also updating the MBSFN configuration information of the adjacent cell in the measurement configuration of the UE in a connected state in the cell to which the UE belongs; the base station is also used to inform the UE to detect neighboring cells at a particular frequency or set of frequencies.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (24)
1. A method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs is characterized by comprising the following steps:
a target base station receives configuration updating signaling from all adjacent source base stations and extracts MBSFN configuration information of a cell to which the source base station belongs from the configuration updating signaling, wherein the source base station is an initiator of the configuration updating signaling; whether the cell to which the source base station belongs has the MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the cell to which the source base station belongs and the time slot distribution of the MBSFN subframe;
and the target base station updates the MBSFN configuration information of the adjacent cell of the cell to which the target base station belongs according to the MBSFN configuration information of the cell to which the source base station belongs.
2. The method of claim 1, wherein the updating of the MBSFN configuration information of the neighboring cell of the neighboring base station refers to updating the MBSFN configuration information of the neighboring cell in the system message of the neighboring cell.
3. The method of claim 1, wherein the updating of the MBSFN configuration information of the neighboring cell refers to updating the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in a connected state in the cell.
4. The method of claim 1, wherein the frequency of the MBSFN subframe of the cell to which the neighboring base station belongs is a difference value between the frequency of the MBSFN subframe of the cell to which the source base station belongs and the frequency of the MBSFN subframe of the cell to which the target base station belongs.
5. The method of claim 1, wherein the MBSFN subframe distribution of the neighboring base station is a difference between the MBSFN subframe distribution of the cell of the source base station and the MBSFN subframe distribution of the cell of the target base station.
6. A system for obtaining MBSFN configuration information of a cell to which a neighboring base station belongs is characterized by comprising: neighboring source base station and target base station, wherein,
the source base station is used for sending a configuration updating instruction carrying MBSFN configuration information of a cell to which the source base station belongs to the target base station, and the source base station is an initiator of a configuration updating signaling; whether the cell to which the source base station belongs has the MBSFN configuration is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the cell to which the source base station belongs and the time slot distribution of the MBSFN subframe;
and the target base station is used for updating the MBSFN configuration information of the adjacent cell of the cell to which the target base station belongs according to the MBSFN configuration information of the cell to which the source base station belongs, which is carried in the configuration updating instructions of all the adjacent source base stations.
7. The system of claim 6, wherein the target base station is further able to update the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in connected state in the cell to which the target base station belongs.
8. A method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs is characterized by comprising the following steps:
a base station receives MBSFN configuration information of all adjacent cells of a cell to which the base station belongs, which is transmitted by a multimedia broadcast multicast service coordination function entity (MCE); whether MBSFN configuration exists in a cell adjacent to a cell to which the base station belongs is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of MBSFN sub-frames of the adjacent cells of the cell to which the base station belongs and the time slot distribution of the MBSFN sub-frames are distributed;
and the base station updates the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information transmitted by the MCE.
9. The method of claim 8, wherein the updating the MBSFN configuration information of the neighboring cell of the cell to which the base station belongs is to update the MBSFN configuration information of the neighboring cell in the system message of the cell to which the base station belongs.
10. The method of claim 8, wherein the updating of the MBSFN configuration information of the neighboring cell of the cell to which the neighboring base station belongs is to update the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell to which the neighboring base station belongs.
11. The method of claim 8, wherein the MCE further transmits the MBSFN configuration information of the cell to which the base station belongs.
12. The method of claim 8, wherein the frequency of the MBSFN subframe of the neighboring cell in the MBSFN configuration information is a difference between the frequency of the MBSFN subframe of the neighboring cell and the frequency of the MBSFN subframe of the cell to which the base station belongs.
13. The method of claim 8, wherein the MBSFN configuration information of the cell to which the neighboring base station belongs is obtained by a difference value between the MBSFN subframe slot distribution of the neighboring cell and the MBSFN subframe slot distribution of the cell to which the base station belongs.
14. A system for obtaining MBSFN configuration information of a cell to which a neighboring base station belongs is characterized by comprising: an MCE and a base station connected to each other, wherein,
the MCE is used for transmitting MBSFN configuration information of all adjacent cells of a cell to which the base station belongs to a base station; whether MBSFN configuration exists in a cell adjacent to a cell to which the base station belongs is identified in the MBSFN configuration information, and when the MBSFN configuration does not exist in the identification, the MBSFN configuration information is null; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of MBSFN sub-frames of the adjacent cells of the cell to which the base station belongs and the time slot distribution of the MBSFN sub-frames are distributed;
and the base station is used for updating the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information of the adjacent cell.
15. The system of claim 14, wherein the base station is further configured to update the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in a connected state in the cell to which the base station belongs.
16. A method for obtaining MBSFN configuration information of a cell to which an adjacent base station belongs is characterized by comprising the following steps:
UE in a base station detects adjacent cells of a cell to which the UE belongs and reports the identification of the adjacent cells to the base station;
the base station sends the identifier of the adjacent cell which is to acquire the MBSFN configuration information to the UE;
the UE acquires MBSFN configuration information of the adjacent cell corresponding to the identifier by reading a signaling of a network side and reports the MBSFN configuration information to the base station; whether MBSFN configuration exists in the adjacent cells is identified in the MBSFN configuration information, and the MBSFN configuration information is null when the MBSFN configuration does not exist in the identification; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe are distributed;
the base station updates the MBSFN configuration information of the adjacent cell of the cell to which the base station belongs according to the MBSFN configuration information of the adjacent cell reported by the UE; the MBSFN configuration information is used for UE in the base station to detect MBSFN reference signals of adjacent cells with MBSFN configuration so as to execute channel estimation and measurement of MBMS service.
17. The method of claim 16, wherein the updating the MBSFN configuration information of the neighboring cell of the own cell means updating the MBSFN configuration information of the neighboring cell in the system message of the own cell.
18. The method of claim 16, wherein the updating of the MBSFN configuration information of the neighboring cell of the cell to which the neighboring base station belongs is to update the MBSFN configuration information of the neighboring cell in the measurement configuration of the connected UE in the cell to which the neighboring base station belongs.
19. The method of claim 16, wherein before the UE detects the neighboring cell of the cell to which the UE belongs, the method further comprises: the base station informs the UE to detect neighboring cells at a particular frequency or set of frequencies.
20. The method of claim 16, wherein the frequency of the MBSFN subframe of the neighboring cell is a difference between the frequency of the MBSFN subframe of the neighboring cell and the frequency of the MBSFN subframe of the cell to which the base station belongs.
21. The method of claim 16, wherein the MBSFN subframe distribution of the neighboring base station is a difference between the MBSFN subframe distribution of the neighboring base station and the MBSFN subframe distribution of the base station.
22. A system for obtaining MBSFN configuration information of a cell to which a neighboring base station belongs is characterized by comprising: a UE and a base station; wherein,
the UE is positioned in the cell to which the base station belongs and is used for detecting the adjacent cell of the cell to which the UE belongs to obtain the identifier of the adjacent cell and reporting the identifier to the base station; acquiring MBSFN configuration information of an adjacent cell corresponding to the identifier by reading a signaling of a network side according to the identifier sent by the base station, and reporting the MBSFN configuration information to the base station; whether MBSFN configuration exists in the adjacent cells is identified in the MBSFN configuration information, and the MBSFN configuration information is null when the MBSFN configuration does not exist in the identification; when the MBSFN configuration exists in the identifier, the MBSFN configuration information comprises: the frequency of the MBSFN subframe of the adjacent cell and the time slot distribution of the MBSFN subframe are distributed;
the base station is used for sending the identifier of the adjacent cell which is to acquire the MBSFN configuration information to the UE according to the identifier of the adjacent cell reported by the UE; updating the MBSFN configuration information of the adjacent cell of the cell to which the UE belongs according to the MBSFN configuration information of the adjacent cell corresponding to the identifier reported by the UE; the MBSFN configuration information is used for UE in the base station to detect MBSFN reference signals of adjacent cells with MBSFN configuration so as to execute channel estimation and measurement of MBMS service.
23. The system of claim 22, wherein the base station is further configured to update the MBSFN configuration information of the neighboring cell in the measurement configuration of the UE in a connected state in the cell to which the base station belongs.
24. The system of claim 22, wherein the base station is further configured to notify the UE to detect the neighboring cell at a specific frequency or frequency set.
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| CN101959171B (en) * | 2010-09-30 | 2015-06-10 | 中兴通讯股份有限公司 | Neighboring cell configuration information updating method and system |
| CN102469466B (en) * | 2010-11-11 | 2015-05-06 | 华为技术有限公司 | Method and device for processing interference |
| CN102595326B (en) * | 2011-01-04 | 2015-07-22 | 上海贝尔股份有限公司 | Method for switching user terminal of multimedia broadcast multicast service in base station of wireless communication network |
| EP2813096B1 (en) * | 2012-02-07 | 2019-10-23 | Nokia Technologies Oy | Method and apparatus for autonomous operation in cellular-based local area networks |
| CN103888956B (en) * | 2012-12-19 | 2019-01-25 | 中兴通讯股份有限公司 | The processing method and system of configuration information |
| CN105027608B (en) * | 2013-02-14 | 2020-03-10 | Lg电子株式会社 | Method for reporting MBMS information in wireless communication system and apparatus for supporting the same |
| CN104301959B (en) * | 2014-08-28 | 2018-03-20 | 中兴通讯股份有限公司 | A kind of method and system, the equipment of holding eMBMS business continuances |
| CN104243099B (en) * | 2014-09-24 | 2018-04-27 | 电信科学技术研究院 | A kind of method and apparatus of definite sending method |
| CN108781479B (en) | 2016-03-31 | 2022-05-13 | 华为技术有限公司 | Multicast transmission method, base station and user equipment |
| CN107197446B (en) * | 2017-05-27 | 2019-11-15 | 海能达通信股份有限公司 | A kind of MA configuration method, system and equipment |
| CN116156436A (en) * | 2020-08-06 | 2023-05-23 | 中国移动通信有限公司研究院 | Information communication, receiving, configuration and sending methods, resource configuration method and equipment |
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