WO2014153783A1

WO2014153783A1 - Cell switching method, device and system for user equipment

Info

Publication number: WO2014153783A1
Application number: PCT/CN2013/073492
Authority: WO
Inventors: 黄英; 张鹏
Original assignee: 华为技术有限公司
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2014-10-02
Also published as: CN104247502A

Abstract

Disclosed are a cell switching method, device and system for a user equipment. In the method, in a wireless communication system which comprises the same frequency and the same cell ID and a plurality of base stations covered together, a user equipment measures the channel quality of cells in which the plurality of base stations covered together are located, and sends a measuring result to a MAC layer of a network centre control node; and the MAC layer of the network centre control node generates a MAC layer switching command and sends same to the user equipment so that the user equipment switches the cells in accordance with the MAC layer switching command. The switching process is simple; quick and flexible switching between different cell ports is realized by the user equipment; and the switching success rate is ensured.

Description

User equipment cell switching method, device and system

The present invention relates to the field of communications technologies, and in particular, to a user equipment cell handover method, apparatus, and system.

Background technique

In current communication systems (such as GSM, UMTS, LTE systems), the traditional handover procedure is performed by RRC signaling interaction, and the cell id is used to distinguish the cells. In the current wireless communication system, in order to increase the throughput of the cell, the small base station is arranged at the same place as the macro base station covers. Specifically, there are many types of network arrangements for the macro base station and the micro base station. As shown in Figure 1, within the network architecture, the macro base station and the micro base station have the same frequency point (the same as the center frequency point of the base station transmitting the pilot signal) and the cell identifier id, which is logically considered to be a cell.

In the research and practice of the handover method, the inventor of the present invention finds that such a scenario in which the same frequency is covered by the same cell identity id, as shown in FIG. 1, when different base stations transmit different content, then the pilot channel The control channel and the data channel may have large interference. In some cases, the UE (User Equipment, User Equipment) cannot even receive data correctly.

In order for the UE to correctly receive data, it is preferable to enable the UE to identify the cells of different base stations. This distinction of the UEs to receive information of different base stations is a kind of handover, but unlike the traditional handover, the traditional handover cannot complete the handover. Logically it is a cell handover.

Summary of the invention

An embodiment of the present invention provides a cell handover method, apparatus, and system for a user equipment, in order to quickly and flexibly complete cell handover of a user equipment in a wireless communication system including multiple base stations with the same frequency and same cell identity and common coverage. The network center controls the process of the node switching to the cell handover, and at the same time increases the handover success rate.

In a first aspect, an embodiment of the present invention provides a user equipment cell handover method, which is used in a wireless communication system, where the wireless communication system includes a same frequency and a same cell identifier, and a plurality of base stations are commonly covered, and the method includes:

The user equipment measures the channel quality of the cell in which the multiple base stations are located, and reports the measured channel quality result to the network center control node; Receiving a MAC layer handover command returned by the media access control layer MAC of the network center control node, where the MAC layer handover command includes a handover indication and switching address information of the target cell;

The cell handover is performed according to the received MAC layer handover command.

In a first possible implementation, in combination with the first aspect, the handover indication is set in a header portion of the MAC layer handover command, and address information of the handover destination cell is set in a data portion of the MAC layer handover command. .

In a second possible implementation manner, in combination with the first possible implementation manner of the first aspect, the switching indication is set by adding a new element in the header portion, or by retaining an existing element in the header portion Field to set.

The address information of the handover target cell includes any one of a pilot spreading code, a pilot index, and a port number.

In a third possible implementation, in combination with the first aspect or the first possible implementation manner of the first aspect, after the MAC layer of the user equipment receives the MAC layer switching command, the user equipment The RRC layer sends a first indication, where the first indication indicates that the MAC layer of the user equipment has received a MAC layer handover command.

In a second aspect, the embodiment of the present invention further provides a user equipment cell handover method, where the wireless communication system includes a same frequency and a same cell identifier, and a plurality of base stations that are commonly covered, the method includes :

The network center control node receives the channel quality result sent by the user equipment, where the channel quality result is the channel quality of the cell where the multiple base stations are measured by the user equipment;

The MAC layer of the network center control node generates a MAC layer handover command according to the channel quality result, and sends the MAC layer handover command to the MAC layer of the user equipment, where the MAC layer handover command includes a handover indication. And switching the address information of the target cell.

In a third aspect, the embodiment of the present invention further provides a user equipment cell switching apparatus, which is used in a wireless communication system, where the wireless communication system includes the same frequency and the same cell identifier, and the multiple coverages of the common base station include:

a measurement module, configured to measure channel quality of a cell in which the multiple base stations are located, and report the measured channel quality to a network center control node;

An execution module, configured to receive a MAC layer switch returned by a MAC layer of the network center control node And performing a cell handover according to the received MAC layer handover command, where the MAC layer handover command includes a handover indication and address information of the handover destination cell.

In a fourth aspect, the embodiment of the present invention further provides another user equipment cell switching apparatus, which is used in a wireless communication system, where the wireless communication system includes the same frequency and the same cell identifier, and the multiple base stations that are commonly covered include:

a receiving module, configured to receive a channel quality result sent by the user equipment, where the channel quality result is a channel quality of a cell in which the multiple base stations are measured by the user equipment;

a generating module, configured to generate a MAC layer handover command according to the channel quality result, and send the MAC layer handover command to a MAC layer of the user equipment, where the MAC layer handover command includes a handover indication and a handover target cell Address information.

In a fifth aspect, the embodiment of the present invention further provides a user equipment cell switching apparatus, which is used in a wireless communication system, where the wireless communication system includes a same frequency and a same cell identifier, and a plurality of base stations are commonly covered, and the apparatus includes :

a receiver, configured to receive a channel quality result sent by the user equipment, where the channel quality result is a channel quality of a cell of each of the multiple base stations measured by the user equipment;

a processor, configured to generate a MAC layer handover command according to the channel quality result, and send the MAC layer handover command to a MAC layer of the user equipment, where the MAC layer handover command includes a handover indication and a handover target cell Address information.

In a sixth aspect, the embodiment of the present invention further provides another user equipment cell switching system, which is used in a wireless communication system, where the wireless communication system includes the same frequency and the same cell identifier, and the common coverage multiple base stations, the user equipment The cell switching system includes: an input device, an output device, a storage device, and a processing device;

The input device is configured to measure channel quality of a cell in which the multiple base stations are located, and send the measured channel quality result to a network center control node;

The output device is configured to generate a MAC layer handover command according to the channel quality result received by the network center control node, and send the MAC layer handover command to the processor, where the MAC layer handover command includes a handover Indicating and switching address information of the target cell;

The processing device is configured to perform cell handover according to the received MAC layer handover command.

The embodiment of the present invention adopts a wireless communication system with the same frequency and the same cell identifier, and is matched by the user equipment. The channel quality of the cell in which the multiple base stations are located is measured, and the measurement result is sent to the MAC layer of the network center control node, and the MAC layer switching command is generated by the MAC layer of the network center control node, and sent to the user equipment, so that the user The device performs cell handover according to the MAC layer handover command, and the handover process is completed, and the user equipment performs fast and flexible handover between different cell ports, and the handover success rate is ensured.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

1 is a block diagram of a prior art wireless communication network;

2 is a schematic flowchart of a mobile station cell handover method according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a format of a conventional MAC command;

FIG. 4 is a schematic flowchart of another mobile station cell handover method according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a mobile station cell handover apparatus according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of a mobile station cell switching system according to an embodiment of the present invention; FIG. 8 is a common coverage scenario applied in the embodiment of the present invention;

FIG. 9 is another common coverage scenario applied by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope should fall within the scope of the present invention. The techniques described herein can be used in a variety of communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA, Code Division Multiple). Access system, time division multiple access (TDMA, Time Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing system, Orthogonal Frequency OFDM (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system , and other such communication systems.

Various aspects are described herein in connection with user equipment and/or base stations and/or base station controllers.

The user equipment, which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS), Cordless Phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), etc. . A wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or The base station (NodeB) in WCDMA may also be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, which is not limited in this application.

The base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited in this application.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association that describes the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

Embodiment 1

An embodiment of the present invention provides a user equipment cell handover method, which is used in a wireless communication system, where the wireless communication system includes a same frequency and a same cell identifier, and a plurality of base stations are commonly covered, and the method includes:

The user equipment measures the channel quality of the cell in which the multiple base stations are located, and reports the measured channel quality result to the network center control node; and receives the MAC layer switch returned by the media access control layer MAC of the network center control node. The MAC layer handover command includes a handover indication and switching address information of the target cell, and performs cell handover according to the received MAC layer handover command.

The MAC layer handover command is generated by the network center control node according to the received channel quality result;

The address information of the handover destination cell includes any one of a pilot spreading code, a pilot index, and a port number.

Specifically, the handover indication may be set in a header portion of the MAC layer handover command, and address information of the handover destination cell may be set in a data portion of the MAC layer handover command. Further, the switching indication can be set by adding a new element to the header portion or by a reserved field of the existing element of the header portion.

Further, the method further includes: after receiving the MAC layer handover command, the MAC layer of the user equipment sends a first indication to the RRC layer of the user equipment, where the first indication indicates that the user equipment is The MAC layer receives the MAC layer handover command.

It should be noted that the user equipment cell handover method provided by the embodiment of the present invention is introduced into the BBU. (Building Base Band Unit, indoor baseband processing unit) + RRU (Radio Remote Unit) radio remote technology, a network center control node (BBU) is connected to multiple base stations (RRUs), including macro base stations and micro The base station, and the micro base station is in an area covered by the macro base station, and the network center control node determines, according to the information fed back by the user equipment, the connection between the user equipment and the cell where the base station is located.

The UE adds a companion pilot, i.e., accompanying data transmission, to the cells of these small base stations, and does not transmit when there is no data. In this way, the UE can distinguish the information of different base stations and reduce the interference. When the UE performs measurement, the pilot frequency/adjacent pilot can be measured, then the base station or the transmitting port can be known to transmit data; or the dominant base station spread spectrum of the small base station. The code is different from the macro base station. When the UE measures, it can also distinguish the data sent by different base stations (port number/pilot index).

These pilot information/index/port number information, the network can be sent to the UE in advance through a system broadcast message or other RRC message.

Referring to Figure 2, the specific process is as follows.

S101. The user equipment measures channel quality of a cell where each of the multiple base stations is located.

The user equipment can measure the parameters required in the handover algorithm, and calculate the measured parameters according to the handover algorithm, thereby obtaining the channel quality of each cell.

5102. The user equipment reports the measured channel quality result to the network center control node. The above channel quality result refers to the channel quality of the cell in which each of the plurality of base stations is located.

5103. Receive a MAC layer handover command returned by a media access control layer MAC of the network center control node, where the MAC layer handover command includes a handover indication and a location information of the handover destination cell.

After receiving the channel quality result reported by the user equipment, the MAC layer of the network center control node compares the channel quality of the cell in which the base station is located in the channel quality result, and selects the cell with the best channel quality as the target handover cell; The node determines whether a handover is required, and when necessary, sets a handover indication and switches address information of the target cell in the generated MAC layer handover command.

The handover indication may be set in the header portion of the MAC layer handover command, and the address information of the handover destination cell may be set in the data portion of the MAC layer handover command.

Further, the handover indication may be set by adding a new element in the header portion of the MAC layer handover command, or by the reserved field of the existing element of the header portion of the MAC layer handover command. Specifically, the composition of the existing MAC command (corresponding to the MAC layer switching command in the embodiment of the present invention) is as shown in FIG. 3, and is composed of two parts: a MAC header (Media Access Control header) and a data part MAC SDU. (Media Access Control Service Data Unit).

An element can be added to the MAC header as an indication of the handover. Of course, we can add a new element to any of the many formats of the MAC handover command to indicate the handover indication.

Alternatively, it is also possible to use existing elements, for example, to use values not used in TCTF/TF/LCH-ID/SI. Table 1 is an example of a format of TCTF, and field values not used by TCTF can be used ( That is, the value of the Reserved part) to indicate the switching indication.

In addition, in the LTE system, the handover indication can also be set in the MAC header, and an ID is added to the LCID element, ID=111111, or the reserved 01011-11010 is used to indicate the cell handover; or, an element is added to the MAC header. Indication, used to indicate cell handover.

S104. The user equipment performs cell handover according to the received MAC layer handover command. Specifically, the MAC layer of the user equipment sends the received MAC layer handover command to the physical layer of the user equipment, and the physical layer of the user equipment performs cell handover according to the MAC layer handover command.

Further, after receiving the MAC layer handover command, the MAC layer of the user equipment may send a first indication to the RRC layer of the user equipment, where the first indication indicates that the MAC layer of the user equipment receives the MAC layer handover command.

It can be seen that, in the embodiment of the present invention, in the wireless communication system with the same-frequency same-cell identifier id, the user equipment measures the channel quality of the cell where multiple base stations are located under the same coverage, and sends the measurement result to the network center control. The MAC layer of the node generates a MAC layer handover command from the MAC layer of the network center control node, and sends the message to the user equipment, so that the user equipment performs cell handover according to the MAC layer handover command, and the process is switched, and the user equipment is different. Fast and flexible switching between cell ports and ensuring handover success rate.

Embodiment 2

The embodiment of the present invention further provides another user equipment cell handover method, which is used in a wireless communication system, where the wireless communication system includes a same frequency and same cell identifier, and a plurality of base stations are commonly covered, and the method includes: The control node receives the channel quality result sent by the user equipment, where the channel quality result is the channel quality of the cell where the multiple base stations are measured by the user equipment; and the MAC layer of the network center control node is according to the channel The quality result generates a MAC layer handover command, and sends the MAC layer handover command to the MAC layer of the user equipment, where the MAC layer handover command includes a handover indication and address information of the handover destination cell.

The MAC layer of the network center control node sends a MAC layer handover command to the MAC layer of the user equipment, so that the user equipment performs a cell handover according to the received MAC layer handover command.

The handover indication is set in a header portion of the MAC layer handover command, and address information of the handover destination cell is set in a data portion of the MAC layer handover command. Further, the switching indication may be set by adding a new element in the header portion or by a reserved field of an existing element.

Further, the MAC layer of the network center control node controls the node of the network center The RRC layer sends a second indication, where the second indication indicates that the MAC layer of the network center control node sends a MAC layer handover command.

Referring to Figure 4, the specific process is as follows.

The network center control node receives the channel quality result sent by the user equipment, where the channel quality result is the channel quality of the cell where the multiple base stations are located in the wireless communication system measured by the user equipment.

The MAC layer of the network center control node generates a MAC layer handover command according to the channel quality result, where the MAC layer handover command includes the handover indication and the address information of the handover destination cell.

5203. The MAC layer of the network center control node sends a MAC layer handover command to the MAC layer of the user equipment, so that the user equipment performs cell handover according to the received MAC layer handover command.

Further, after the MAC layer of the network center control node sends the MAC layer handover command, the MAC layer of the network center control node sends a second indication to the RRC layer of the network center control node, where the second indication indicates that the MAC layer of the network center control node sends The MAC layer switching command.

The handover indication may be set in the header portion of the MAC layer handover command, and the address information of the handover destination cell is set in the data portion of the MAC layer handover command.

Further, the switching indication can be set by adding a new element in the header portion or by the reserved field of the existing element.

It can be seen that the user equipment cell handover method provided by the embodiment of the present invention adopts the same frequency, the same cell id, and the same coverage wireless communication system, and the user equipment performs each channel quality test and transmits the test result to the network center control. a node, the network center control node generates a MAC layer handover command according to the channel quality, and sends the MAC layer handover command to the MAC layer of the user equipment, so that the user equipment performs cell handover according to the MAC layer handover command, and the handover process is performed, and the user equipment is in different cells. Fast and flexible switching between ports and guarantees the success rate of switching.

Embodiment 3

The embodiment of the present invention further provides a user equipment cell switching apparatus, which is used in a wireless communication system, where the wireless communication system includes a same frequency and same cell identifier, and a plurality of base stations are commonly covered, and the apparatus includes: a measurement module, The method is configured to measure the channel quality of the cell in which the multiple base stations are located, and report the measured channel quality result to the network center control node. The executing module is configured to receive the MAC returned by the MAC layer of the network center control node. Layer switching command, and based on the received MAC The layer switching command performs cell handover, where the MAC layer handover command includes a handover indication and address information of the handover destination cell.

The execution module is further configured to: after receiving the MAC layer handover command, send a first indication to the RRC layer of the user equipment, where the first indication indicates that the user equipment receives a MAC layer handover command.

It should be noted that the BBU+RRU radio remote technology is introduced in the wireless communication network applied by the user equipment cell switching device provided by the embodiment of the present invention, and the network center control node (BBU) determines the user equipment according to the channel quality fed back by the measurement module. Whether it is necessary to switch the cell and switch the address information of the target cell.

Specifically, as shown in FIG. 5, the user equipment cell switching apparatus includes: a measurement module 301, configured to measure channel quality of a cell where each of the multiple base stations in the wireless communication system is located, and report the measured channel quality result to the The network center control node; the measurement module 301 can measure the required parameters according to a preset algorithm, that is, measure corresponding parameters in the cells where each base station is located, and calculate parameters measured by each cell according to a preset algorithm, thereby obtaining each base station. The channel quality of the cell in which it is located.

The performing module 302 is configured to receive a MAC layer handover command returned by the MAC layer of the network center control node, and perform cell handover according to the received MAC layer handover command, where the MAC layer handover command includes a handover indication and a handover destination. The address information of the cell.

It should be noted that the MAC layer of the network center control node may set the handover indication to the header portion of the MAC layer handover command, and set the address information of the handover destination cell to the data portion of the MAC layer handover command. Further, the handover indication may be adopted. Add a new element to the header section to set it, or set it by the reserved field of the existing element in the header section.

The cell switching device provided by the embodiment of the present invention may be installed in a user equipment, or may pass Other ways to establish communication with the user equipment.

It can be seen that the measurement module in the cell switching device of the user equipment according to the embodiment of the present invention measures the channel quality of the cell where each base station is located in the wireless communication system, and feeds the measurement result back to the network center control node, so that the network center control node The handover judgment may be performed according to the channel quality result, and the MAC layer handover command is generated, and the execution module in the device performs the action according to the MAC layer handover command from the network center control node, that is, whether the cell handover and the handover target cell are performed, and the device implements The user equipment quickly and flexibly switches between different cell ports, and the switching process is single, and the switching success rate is high.

Embodiment 4

The embodiment of the present invention further provides another user equipment cell switching apparatus. Referring to FIG. 6, the apparatus is used in a wireless communication system, where the wireless communication system includes the same frequency and same cell identifier, and multiple base stations are commonly covered. The device includes: a receiving module 401, configured to receive a channel quality result sent by the user equipment, where the channel quality result is a channel quality of a cell of each of the multiple base stations measured by the user equipment; And generating, by the channel quality result, a MAC layer handover command, and sending the MAC layer handover command to the MAC layer of the user equipment, so that the user equipment performs cell handover according to the received MAC layer handover command, The MAC layer handover command includes a handover indication and address information of the handover destination cell.

Thereby, the user equipment performs cell handover according to the received MAC layer handover command.

Specifically, the generating module is configured to set the handover indication to a header portion of the MAC layer handover command, and set address information of the handover destination cell to a data portion of the MAC layer handover command. Further, the generating module may set the switching indication by adding a new element in the header portion, or set the switching indication by using a reserved field of an existing element.

Further, the generating module is further configured to send a second indication to the RRC layer of the network center control node, where the second indication indicates that the generating module sends a MAC layer switching command.

It can be seen that the generating module 402 in the user equipment cell switching apparatus provided by the embodiment of the present invention generates a MAC layer switching command according to the channel quality result received by the receiving module 401, and sends the MAC layer switching command to the user equipment, where the MAC layer switching command includes Switching indication and switching address information of the destination cell, from The user equipment performs cell handover according to the MAC layer handover command, and the implementation process of the device is single, and the handover success rate is ensured.

Embodiment 5

The embodiment of the present invention further provides a user equipment cell switching apparatus, which is used in a wireless communication system, where the wireless communication system includes the same frequency and the same cell identifier, and the plurality of base stations are commonly covered, and the apparatus includes:

Specifically, the processor is configured to set the handover indication to a header portion of the MAC layer handover command, and set address information of the handover destination cell to a data portion of the MAC layer handover command. Further, the processor may set the switching indication by adding a new element in the header portion, or set the switching indication by using a reserved field of an existing element.

It can be seen that the processor in the cell switching device of the user equipment according to the embodiment of the present invention generates a MAC layer handover command according to the channel quality result received by the receiver, and sends the message to the user equipment, where the MAC layer handover command includes a handover indication. And switching the address information of the target cell, so that the user equipment performs cell handover according to the MAC layer handover command, and the implementation process of the device is single, and the handover success rate is ensured.

Embodiment 6

The embodiment of the present invention further provides a user equipment cell handover system, which is used in a wireless communication system, where the wireless communication system includes a same frequency and a same cell identifier, and a plurality of base stations are commonly covered, and the handover system includes the third embodiment of the present invention. The provided user equipment cell switching apparatus and the user equipment cell switching apparatus provided in Embodiment 4 are provided.

Specifically, as shown in FIG. 7, the user equipment cell handover system provided by the embodiment of the present invention includes: a measurement module 301, configured to perform channel quality on a cell where each of a plurality of base stations in a wireless communication system is located. Measuring, and reporting the measured channel quality result to the receiving module 401; the receiving module 401, configured to receive the channel quality result sent by the measuring module 301; the generating module 402, configured to generate a MAC layer switching command according to the received channel quality result The MAC layer handover command is sent to the execution module 302, where the MAC layer handover command includes the handover indication and the address information of the handover destination cell. The execution module 302 is configured to perform cell handover according to the received MAC layer handover command.

It can be seen that the measurement module 301 in the user equipment cell switching system provided by the embodiment of the present invention measures the channel quality of the cell in which the base station is located in the wireless communication system, and feeds the measurement result to the receiving module 401, so that the generating module 402 can Performing a handover judgment according to the channel quality result received by the receiving module 401, and generating a MAC layer handover command, and the execution module 302 performs an action according to the MAC layer handover command obtained from the generation module 402, that is, whether to perform cell handover and switch the address information of the target cell. The system realizes fast and flexible switching of user equipments between different cell ports, and the switching process is single, and the switching success rate is high.

Example 7

The embodiment of the present invention further provides another user equipment cell switching system, which is used in a wireless communication system, where the wireless communication system includes a plurality of base stations that have the same frequency and same cell identifier id and are commonly covered, and the system includes: Output device, storage device and processing device.

The input device is configured to measure channel quality of a cell in which the multiple base stations are located, and send the measured channel quality result to the physical layer of the network center control node.

The output device is configured to generate a MAC layer handover command according to the channel quality result received by the physical layer of the network center control node, and send the MAC layer handover command to the processor, where the MAC layer handover command The switch indication and the address information of the handover destination cell are included.

Specifically, the output device sets the switching indication by adding a new element to the header portion, or sets the switching indication by a reserved field of an existing element.

It can be seen that the input module in the user equipment cell switching system provided by the embodiment of the present invention measures the channel quality of the cell where each base station is located in the wireless communication system, and feeds the measurement result back to the network center control node, so that the output device according to the network The channel quality result received by the central control node The MAC layer switching command is transmitted to the processor, so that the processor performs cell switching according to the MAC layer switching command, and implements fast and flexible switching between different cell ports, and the switching process is single, and the switching success rate is high. It should be further noted that the common coverage in the embodiment of the present invention includes the two scenarios shown in FIG. 8 and FIG. 9. FIG. 8 shows that the coverage area of the macro base station partially overlaps with the coverage area of the micro base station, and FIG. 9 shows that The coverage area of the base station is located within the coverage area of the macro base station.

It will be clearly understood by those skilled in the art that for the convenience and cleanness of the description, only the division of each functional module described above is exemplified. In practical applications, the above functional assignments may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

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

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

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage. The medium includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art will be able to devise variations or substitutions that are easily conceivable within the scope of the present invention.

Claims

Rights request

1. A user equipment cell switching method, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the method includes:

The user equipment measures the channel quality of the cells where the multiple base stations are located, and reports the measured channel quality results to the network center control node;

Receive the MAC layer switching command returned by the media access control layer MAC of the network center control node, where the MAC layer switching command includes the switching instruction and the address information of the switching destination cell;

Cell switching is performed according to the received MAC layer switching command.

2. The method according to claim 1, characterized in that the switching instruction is set on the

The header part of the MAC layer switching command, the address information of the switching destination cell is set in the data part of the MAC layer switching command.

3. The method according to claim 2, characterized in that the switching indication is set by adding a new element to the header part, or is set by a reserved field of an existing element in the header part.

4. The method according to claim 1, characterized in that the address information of the switching destination cell includes any one of a pilot spreading code, a pilot index and a port number.

5. The method according to claim 1 or 2, characterized in that, the method further includes: after the MAC layer of the user equipment receives the MAC layer switching command, sending the first step to the RRC layer of the user equipment. An indication, the first indication indicates that the MAC layer of the user equipment has received a MAC layer switching command.

6. A user equipment cell switching method, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the method includes:

The network center control node receives the channel quality result sent by the user equipment, where the channel quality result is the channel quality of the respective cells of the multiple base stations measured by the user equipment;

The MAC layer of the network center control node generates a MAC layer switching command according to the channel quality result, and sends the MAC layer switching command to the MAC layer of the user equipment, where the MAC layer switching command includes a switching instruction. and the address information of the handover destination cell.

7. The method according to claim 6, wherein the handover instruction is set in the header part of the MAC layer handover command, and the address information of the handover destination cell is set in the data part of the MAC layer handover command. .

8. The method according to claim 7, characterized in that the switching indication is set by adding a new element to the packet header part, or is set by a reserved field of an existing element.

9. The method according to claim 6, characterized in that the address information of the switching destination cell includes any one of a pilot spreading code, a pilot index and a port number.

10. The method according to claim 6 or 7, characterized in that, the method further includes: the MAC layer of the network center control node sends a second indication to the RRC layer of the network center control node, the first The second indication indicates that the MAC layer of the network center control node has sent a MAC layer switching command.

11. A user equipment cell switching device, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the device includes:

A measurement module, used to measure the channel quality of the respective cells of the multiple base stations, and report the measured channel quality results to the network center control node;

Execution module, configured to receive a MAC layer switching command returned by the MAC layer of the network center control node, and perform cell switching according to the received MAC layer switching command, wherein the MAC layer switching command includes a switching instruction and a switching destination cell. address information.

12. The apparatus according to claim 11, wherein the execution module is further configured to send a first indication to the RRC layer of the user equipment after receiving the MAC layer switching command, and the first The indication indicates that the user equipment has received the MAC layer switching command.

13. The device according to claim 11, wherein the address information of the handover destination cell includes any one of a pilot spreading code, a pilot index and a port number.

14. A user equipment cell switching device, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the device includes:

A receiving module, configured to receive a channel quality result sent by the user equipment, where the channel quality result is the channel quality of the respective cells of the multiple base stations measured by the user equipment; Generating module, configured to generate a MAC layer switching command according to the channel quality result, and send the MAC layer switching command to the MAC layer of the user equipment, where the MAC layer switching command includes a switching instruction and a switching destination cell. address information.

15. The device according to claim 14, wherein the generating module is configured to set the handover instruction in the header part of the MAC layer handover command, and set the address information of the handover destination cell in the header part of the MAC layer handover command. Describes the data part of the MAC layer switching command.

16. The device according to claim 15, wherein the generating module sets the switching indication by adding a new element to the header part, or sets the switching indication by using a reserved field of an existing element.

17. The device according to claim 14 or 15, wherein the generating module is further configured to send a second indication to the RRC layer of the network center control node, the second indication indicating that the generating module has sent a MAC Layer switching command.

18. The device according to claim 14, wherein the address information of the handover destination cell includes any one of a pilot spreading code, a pilot index and a port number.

19. A user equipment cell switching device, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the device includes:

A receiver, configured to receive a channel quality result sent by the user equipment, where the channel quality result is the channel quality of the respective cells of the multiple base stations measured by the user equipment;

A processor, configured to generate a MAC layer switching command according to the channel quality result, and send the MAC layer switching command to the MAC layer of the user equipment, where the MAC layer switching command includes a switching indication and a switching destination cell. address information.

20. The device according to claim 19, wherein the processor is configured to set the handover instruction in the header part of the MAC layer handover command, and set the address information of the handover target cell in the header part of the MAC layer handover command. The data part of the MAC layer switching command.

21. The device according to claim 20, wherein the processor sets the switching indication by adding a new element to the packet header part, or sets the switching indication by using a reserved field of an existing element.

22. The device according to claim 19, characterized in that: the address of the switching destination cell The information includes any one of pilot spreading code, pilot index and port number.

23. A user equipment cell switching system, used in a wireless communication system, characterized in that the wireless communication system includes multiple base stations with the same frequency and the same cell identity, and common coverage, and the system includes: an input device, Output devices, storage devices and processing devices;

The input device is used to measure the channel quality of the respective cells of the multiple base stations, and provide the measured channel quality results to the network center control node;

The output device is configured to generate a MAC layer switching command according to the channel quality result received by the network center control node, and send the MAC layer switching command to the processor, wherein the MAC layer switching command includes switching Indicate and switch the address information of the destination cell;

The processing device is used to perform cell switching according to the received MAC layer switching command.

24. The system according to claim 23, wherein the output device is configured to set the switching instruction in the header part of the MAC layer switching command, and to set the address information of the switching destination cell in the header part of the MAC layer switching command. Describes the data part of the MAC layer switching command.

25. The system according to claim 24, wherein the output device sets the switching indication by adding a new element to the header part, or sets the switching indication by using a reserved field of an existing element.

26. The system according to claim 23, characterized in that the address information of the handover destination cell includes any one of a pilot spreading code, a pilot index and a port number.