CN101827303A

CN101827303A - Transmission method and system and processing method and system of position related information

Info

Publication number: CN101827303A
Application number: CN200910078807A
Authority: CN
Inventors: 谢峰; 鲁照华; 刘扬; 张磊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2010-09-08
Also published as: WO2010099688A1

Abstract

The present invention discloses a method for sending location-related information. The method includes: a base station sends location-related information of a femto-base station to a terminal, so as to support the terminal to access the femto-base station, and/or the terminal to switch to the femto-base station, and/or the terminal The femto base station is positioned, and/or the terminal realizes its own positioning. The invention also discloses a position related information sending system, which includes: a sending unit for sending the position related information of the femto base station to the terminal. Using the sending method and system of the present invention to send location-related information to guide the terminal to access the Femto base station, and/or the terminal to switch to the Femto base station, and/or the terminal to locate to the Femto base station, and/or the terminal to realize its own positioning, Improve the service quality of the system. The present invention also discloses a processing method and system for position-related information. By adopting the processing method and system of the present invention, the terminal processes the position-related information to facilitate scanning, and/or switching, and/or access processing.

Description

Method and system for sending and processing position related information

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for transmitting location related information of a femto in a wireless communication system, and a method and a system for processing location related information of a femto.

Background

In a wireless communication system, a base station refers to a device that provides a service to a terminal, and the base station and the terminal perform wireless communication by electromagnetic waves. A wireless communication system provides wireless coverage to terminals within the geographic area covered by the base station signals, referred to as a cell, through the base station.

In general, in order to provide wireless communication for a terminal in a wide range, a wireless communication system needs to deploy a base station with a wide coverage area, such a base station is generally called a macro base station, and a cell covered by the macro base station is generally called a macro cell. Meanwhile, in the wireless communication system, in consideration of different requirements and different use environments of the terminal, it is required to provide a higher-quality wireless communication service for the terminal in some environments or scenes, and some base stations with a small coverage area and a low transmission power are adopted, and these small base stations include a small base station, a micro base station, and a sub base station. The femto base station may also be referred to as a home base station, a personal base station, or a micro base station. The macro base station is a wireless access device used in an outdoor environment, and the sub base station is a wireless access device used in an indoor environment, different from the macro base station, and can provide a high-speed and/or proprietary wireless communication service for a home or home office environment (SOHO) by deploying the sub base station in a wireless communication system. The cell served by a sub-base station is called a sub-cell (Femtocell), and a terminal served in the sub-cell is usually stationary or moving only at a low speed, e.g. the terminal is moving at walking speed. Fig. 1 is a schematic diagram of a wireless communication system, where fig. 1 includes: a macro base station 11, sub base stations 21-25, and a terminal 31. The cell served by the macro base station 11 is denoted by a1, and the cells served by the sub base stations 21 to 25 are denoted by b1 to b 5.

A macro base station can cover the area of 2 to 3 kilometers of a square circle at most, and the coverage range of a sub base station does not exceed 30 meters. Due to their large differences in coverage, a large number of sub-base stations, such as hundreds or even thousands of sub-base stations, may be deployed within the coverage of the macro base station to improve the quality of communication services indoors. The maximum number of terminals that the sub-base station can access simultaneously is usually 6 to 8. Sub-base stations are also generally classified as open and proprietary. Under the premise that the maximum number of the terminals is not exceeded, the open sub-base station can be accessed to any terminal; and the special sub-base station is only opened for the special terminal, and other terminals can not access the special sub-base station even in the coverage area of the special sub-base station.

In a wireless communication system comprising a macro base station and a plurality of sub-base stations covered by the macro base station, in order to ensure the promised service quality, when a terminal can obtain service from the sub-base stations, the sub-base stations should replace the macro base station to provide communication service for the terminal, and the terminal is switched from the macro base station to the sub-base stations. The precondition that the terminal can obtain the service from the sub-base station comprises: the sub-base station is accessible by the terminal, i.e. the sub-base station is a proprietary sub-base station authorized by the terminal or the sub-base station is open, the sub-base station can also access a new terminal, and the terminal has entered the service area of the sub-base station.

In the prior art, in order to facilitate the terminal to access and/or switch to the sub-base station, the wireless communication system provides some information related to the sub-base station for the terminal, where the provided related information includes communication information of the sub-base station, such as carrier frequency, preamble, base station identification number, cell load, and the like, which can be used for communication, and it also implies: the sub-base station provided by the system is the precondition that the terminal can access the sub-base station. Because the coverage of the sub-base station is very small, and the coverage of the macro base station is very large, whether the terminal can access the sub-base station depends on whether the terminal enters the service area of the sub-base station or not to a great extent. If the position of the sub-base station relative to the terminal can be known, it can be known conveniently whether the terminal enters the service area of the sub-base station, however, the existing wireless communication system does not provide the position information for identifying the position of the sub-base station in the relevant information of the sub-base station, so that the terminal and the user thereof do not know the position of the sub-base station which can be accessed, the terminal is not favorable to accessing and/or switching to the sub-base station, and the service quality of the system is reduced.

In addition, before the terminal accesses and/or switches from the macro base station to the sub-base station, the system needs to determine whether the terminal enters the service area of the sub-base station, and when the terminal enters the service area of the sub-base station, the access and/or the switching is performed. In the prior art, the adopted judgment scheme is as follows: the terminal attempts to detect the signal of the sub-base station, or the sub-base station attempts to monitor the signal of the terminal. The process of trying to detect or monitor by adopting the existing judgment scheme has great uncertainty, and the process of trying causes that the system is always in a working state and consumes much time, which brings a series of problems of low use efficiency of the system, large additional cost of the system and the like.

Since the terminal itself has a Location-Based Service (LBS), if considered from this point of view, the Location of the terminal is known under the support of the LBS, on this basis, it only needs to know the Location of the sub-base station accessible to the terminal, and then it can be determined whether the terminal enters the Service area of the sub-base station, that is, the terminal can perform scanning, and/or switching, and/or accessing processing according to the Location-related information of the sub-base station. Therefore, the method can enhance the certainty of judgment, simplify the judgment, reduce the system power consumption and communication overhead, and facilitate the processing of scanning, and/or switching and/or accessing. At present, there is no corresponding implementation for this consideration concerning location.

Disclosure of Invention

In view of this, the present invention provides a method and a system for sending position related information, where a sending end sends the position related information of a sub-base station, so that a receiving end obtains the position related information of the sub-base station to guide a terminal to access the sub-base station, and/or the terminal to switch to the sub-base station, and/or the terminal is located to the sub-base station, and/or the terminal realizes its own location, thereby improving the service quality of the system.

Another object of the present invention is to provide a method and a system for processing location related information, wherein a terminal at a receiving end performs scanning, and/or handover, and/or access processing according to the location related information of a femto base station, which not only enhances the certainty of the determination, but also simplifies the determination, reduces the system power consumption and communication overhead, and facilitates the scanning, and/or handover, and/or access processing.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a method of transmitting location related information, the method comprising:

the base station sends the position related information of the sub-base station to the terminal so as to support the terminal to access the sub-base station, and/or the terminal to switch to the sub-base station, and/or the terminal to position the sub-base station, and/or the terminal to realize self positioning.

Wherein, before the sending, further comprising: the base station acquires position related information of the sub base station.

The base station obtains the position related information of the sub base station through self receiving/measuring/calculating, and/or air interface, and/or relay station, and/or backbone network, and/or backhaul.

The base station comprises a macro base station, a small base station, a micro base station and a sub base station; the transmission mode comprises at least one of broadcasting, multicasting and unicasting.

Wherein the obtaining specifically comprises: obtaining position related information of the sub base station by the sub base station;

the sending specifically comprises: and actively sending the position related information of the sub-base station to the terminal by the sub-base station, or passively sending the position related information of the sub-base station to the terminal by the sub-base station after the sub-base station receives the request message of the terminal.

Wherein the obtaining specifically comprises: the sub-base station acquires the position related information of the terminal, and the sub-base station acquires the position related information of the sub-base station according to the position related information of the terminal;

Wherein the obtaining of the position related information of the sub base station further comprises:

the other terminals determine the position related information of the terminal as reference information, obtain the position related information of the other terminals according to the reference information, and obtain the position related information of the sub-base station according to the position related information of the other terminals;

the types of the terminal or the other terminals include: the terminal type of the accessed sub-base station and the terminal type of the non-accessed sub-base station.

Wherein the obtaining specifically comprises: obtaining the position related information of the sub base station by the macro base station; or,

the method comprises the steps that a macro base station acquires position related information of a terminal, or the macro base station acquires the position related information of the terminal through a sub base station, and the macro base station acquires the position related information of the sub base station according to the position related information of the terminal;

the sending specifically comprises: and the macro base station actively sends the position related information of the sub base station to the terminal, or the macro base station passively sends the position related information of the sub base station to the terminal after receiving the request message of the terminal.

The sub-base station specifically comprises: the sub-base station that the terminal can access includes: the open sub-base station and/or the terminal obtains the authorized special sub-base station.

Wherein, the sub base station includes: the sub-base stations which are accessed by the terminal and/or the sub-base stations which are not accessed by the terminal.

Wherein, the method also comprises: the position related information of the sub-base station is carried in the neighbor cell list message, or carried in the mapping relation information of the sub-base station and the macro base station, or carried by other messages;

the position related information of the sub-base station comprises: at least one of identification number/index number of the sub-base station, position identification information, carrier frequency of the sub-base station, preamble of the sub-base station and position identification information type.

The position identification information includes at least one of three modes, specifically: the positioning method comprises the following steps that geographical position information of the sub-base station and/or the terminal, satellite positioning GPS signal characteristic information received by the sub-base station and/or the terminal, and base station positioning signal characteristic information measured by the sub-base station and/or the terminal;

the location identification information type corresponds to the three modes, including: at least one of a geographical location information type, a GPS signal characteristic information type, and a base station positioning signal characteristic information type.

The type of the location identification information identifies the location identification information, and is further associated with at least one of the location of the sub-base station, the location of the terminal accessible to the sub-base station, and the capability of the terminal.

Wherein the request message further encapsulates the location identification information type, and the sending further includes: and sending the position identification information corresponding to the position identification information type to the terminal.

A system for transmitting location-related information, the system comprising: and the sending unit is used for sending the position related information of the sub-base station to the terminal by the base station so as to support the terminal to be accessed to the sub-base station and/or the terminal to be switched to the sub-base station and/or the terminal to be positioned to the sub-base station and/or the terminal to realize self positioning.

A method of processing location related information, the method comprising:

and the terminal executes scanning, and/or switching and/or accessing processing according to the position related information of the sub base station.

And the terminal further executes scanning, and/or switching, and/or accessing processing according to the position related information of the sub-base station received and stored by the terminal and/or the position related information of the sub-base station generated and stored by the terminal.

Wherein the executing specifically comprises: judging whether the terminal enters and/or prepares to enter a service area of the sub-base station according to the position related information of the sub-base station received and stored by the terminal; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

Wherein the executing specifically comprises: judging whether the terminal enters and/or prepares to enter a service area of the sub-base station according to the position related information of the sub-base station generated and stored by the terminal; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

Wherein the executing specifically comprises: judging whether the terminal enters and/or is ready to enter a service area of the sub-base station according to combined information formed by the position related information of the sub-base station received and stored by the terminal and the position related information of the generated and stored sub-base station; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

Wherein the method further comprises: the terminal initiates the processing of scanning, and/or switching, and/or accessing and determines the processing priority sequence of scanning and/or switching and/or accessing according to the position related information of the sub-base station, and/or the current position identification information of the terminal, and/or the neighbor list message, and/or the interference signal strength currently measured by the terminal, and/or the current state of the terminal, and/or the indication of the base station.

A system for processing location related information, the system comprising: and the execution unit is used for the terminal to execute scanning, and/or switching, and/or accessing processing according to the position related information of the sub-base station.

One implementation scheme of the invention is as follows: the base station sends the position related information of the sub-base station to the terminal so as to support the terminal to access the sub-base station, and/or the terminal to switch to the sub-base station, and/or the terminal to position the sub-base station, and/or the terminal to realize self positioning. Another implementation of the present invention is: and the terminal executes scanning, and/or switching and/or accessing processing according to the position related information of the sub base station.

In a Worldwide Interoperability for microwave Access (WiMAX) communication network, a macro base station provides a wide range of coverage, and a sub base station provides a terminal with a fast and flexible communication service in a home or a home office environment. When the terminal goes home from the outside, the base station serving the terminal is switched from the macro base station outside to the sub base station in the home. When the system judges that the terminal is close to the sub-base station, namely the terminal enters the service area of the sub-base station, the terminal initiates the scanning and switching processes. However, the existing solutions for determining whether the terminal enters the service area of the sub-base station do not utilize the LBS provided by the terminal, which results in a series of problems such as low system utilization efficiency and large system overhead. If the position of the terminal is known under the support of the LBS from the viewpoint of the position, on the basis, it can be determined whether the terminal enters the service area of the sub-base station only by knowing the position of the sub-base station accessible to the terminal. For example, in the case that the terminal is switched from the macro base station to the sub-base station, if the distance between the terminal and the sub-base station can be obtained, it can be determined whether the terminal enters the service area of the sub-base station by determining whether the distance falls within the signal coverage range of the current terminal to be accessed to the sub-base station. For example, the signal coverage of the sub-base station is 20m, and when the distance between the terminal and the sub-base station is less than 20m, it can be determined that the terminal has entered the service area of the sub-base station. The present invention is just two implementations corresponding to this consideration concerning location. By adopting the two implementation schemes of the invention, the certainty of the judgment can be enhanced, the judgment can be simplified, and the power consumption and the communication overhead of the system can be reduced, thereby avoiding a series of problems of low use efficiency of the system, larger additional overhead of the system and the like, and facilitating the execution of the processing of scanning, and/or switching and/or accessing. That is, the two implementation schemes of the invention can reduce the time and resource occupation overhead of the terminal for scanning the relevant sub-base stations; improving the scanning, accessing and switching performance of the wireless communication system; and reducing the resource occupation overhead of the communication and system.

Drawings

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

fig. 2 is a schematic flow chart of an implementation of the transmission method of the present invention;

FIG. 3 is a schematic flow chart of the implementation of the processing method of the present invention.

Detailed Description

The basic idea of the invention is: two implementation schemes of sending and processing aiming at the position related information are adopted, one scheme is as follows: and sending the position related information of the sub-base station to the terminal at the sending end so as to support the terminal to access the sub-base station, and/or the terminal to switch to the sub-base station, and/or the terminal to position the sub-base station, and/or the terminal to realize self positioning. So as to adopt the relevant information of the position to guide the terminal to enter the service area of the sub base station; the other is as follows: and the terminal executes scanning, and/or switching and/or accessing processing according to the position related information of the sub base station.

The following describes the embodiments in further detail with reference to the accompanying drawings.

As shown in fig. 2, a method for transmitting location related information, the method comprising the steps of:

step 101, the base station obtains the position related information of the sub base station.

And 102, the base station sends the position related information of the sub-base station to the terminal so as to support the terminal to access the sub-base station, and/or the terminal to switch to the sub-base station, and/or the terminal to position the sub-base station, and/or the terminal to realize self positioning.

Here, the specific implementation of the method includes three cases, for example. In a first case, the method comprises: directly acquiring position related information of the sub-base station by the sub-base station, and actively sending the position related information of the sub-base station to a terminal by the sub-base station; or directly acquiring the position related information of the sub-base station, and after receiving the request message of the terminal, the sub-base station passively sends the position related information of the sub-base station to the terminal.

In the second situation, the sub-base station directly acquires the position related information of the terminal, and indirectly acquires the position related information of the sub-base station according to the position related information of the terminal, and the position related information of the sub-base station is actively sent to the terminal by the sub-base station; or directly acquiring the position related information of the terminal, and indirectly acquiring the position related information of the sub-base station by the position related information of the terminal, and after receiving the terminal request message, the sub-base station passively sends the position related information of the sub-base station to the terminal. Further, a plurality of terminals exist, other terminals determine the position related information of the current terminal as reference information, indirectly acquire the position related information of other terminals according to the reference information, and indirectly acquire the position related information of the sub-base station according to the position related information of other terminals; and the position related information of the sub-base station is actively sent to other terminals by the sub-base station, or the sub-base station passively sends the position related information of the sub-base station to the terminals after receiving the request message of other terminals. Wherein, no matter the terminal or other terminals, their types all include: the terminal type of the accessed sub-base station and the terminal type of the non-accessed sub-base station.

In the third situation, the macro base station directly acquires the position related information of the sub base station; or the macro base station directly acquires the position related information of the terminal, or the macro base station indirectly acquires the position related information of the terminal through the sub-base station, and the position related information of the sub-base station is indirectly acquired through the position related information of the terminal; and actively sending the position related information of the sub-base station to the terminal by the macro base station, or passively sending the position related information of the sub-base station to the terminal by the macro base station after the macro base station receives the terminal request message.

Here, the method further includes: the base station acquires the position related information of the sub base station through self receiving/measuring/calculating, and/or air interface, and/or relay station, and/or backbone network, and/or return way; the base station actively sends the position related information of the sub-base station to the terminal, or the base station passively sends the position related information of the sub-base station to the terminal after receiving the request message of the terminal.

The base station comprises a macro base station, a small base station, a micro base station or a sub base station. The method for transmitting the position related information of the sub-base station comprises the following steps: at least one of broadcast, multicast, unicast.

Wherein, the sub base station specifically is: the sub-base stations which can be accessed by the terminal comprise open sub-base stations and/or proprietary sub-base stations authorized by the terminal.

Wherein, son basic station includes: the sub-base stations which are accessed by the terminal and/or the sub-base stations which are not accessed by the terminal.

The position related information of the sub base station is carried in the neighbor list message, or carried in the mapping relation information of the sub base station and the macro base station, or carried by other messages. The position-related information of the femto base station includes: at least one of the identification number of the sub-base station/the index number of the sub-base station, the position identification information, the carrier frequency of the sub-base station, the preamble of the sub-base station and the type of the position identification information.

The position identification information includes at least one of three modes. The three modes are specifically as follows: the positioning method comprises the steps of obtaining geographical position information of the sub-base station and/or a terminal below the sub-base station, satellite positioning (GPS) signal characteristic information received by the sub-base station and/or a terminal below the sub-base station, and base station positioning signal characteristic information measured by the sub-base station and/or a terminal below the sub-base station. The location identification information type corresponds to the three modes including: at least one of a geographical location information type, a GPS signal characteristic information type, and a base station positioning signal characteristic information type.

The position identification information type marks the position identification information and is further correspondingly associated with at least one of the position of the sub-base station, the position of the terminal capable of accessing the sub-base station and the capability of the terminal.

For the above related request message, the request message is further encapsulated with a location identification information type, and sending the location related information of the sub-base station specifically includes: the position-related information of the sub-base station includes position identification information, and the position identification information corresponding to the type of the position identification information is transmitted to the terminal.

The first method embodiment is as follows: the sub-base station acquires the position related information of the sub-base station, and the position related information of the sub-base station is actively sent to the terminal by the sub-base station.

For obtaining the location related information of the sub-base station, the sub-base station may receive the GPS signal and/or perform the measurement and transmission required for LBS, for example, by itself or according to a request from the backbone network or other base stations such as a macro base station. Here, the reception of the GPS signal is for a sub-base station including a GPS or other GPS function. When calculating geographical location information, one case is: the sub-base station can process the GPS signals and/or carry out the measurement results of LBS required measurement to position the sub-base station, and the sub-base station calculates and generates the sub-base station geographical position information, such as longitude and latitude information, and sends the sub-base station geographical position information to other base stations when necessary. Other base stations herein refer to base stations that previously initiated the request, or control base stations that initiated the power-up process of the system. The other situation is that: the sub-base station may also send the GPS signals and/or the measurement results of the measurements required for performing the LBS to a specific server, such as an LBS server, and then the LBS server calculates the geographical location information of the sub-base station and sends the geographical location information of the sub-base station to the relevant sub-base station.

For the position-related information of the sub-base station actively transmitted by the sub-base station, for example, the sub-base station may actively provide the position-related information of the sub-base station to the terminal served by the sub-base station. When the position-related information of the femto includes the position identification information, the femto may broadcast and/or unicast its own position identification information to the terminal. The terminal receives and stores the location identification information of the sub-base station broadcast and/or unicast for use in scanning, switching and/or access.

The second embodiment of the method is as follows: in the multiple terminals, the sub-base station acquires the position related information of at least one terminal, and acquires the position related information of the current terminal, that is, acquires the position related information of the current sub-base station corresponding to the position related information of the current terminal. Furthermore, the other terminals use the position related information of the current terminal as a reference value, so as to obtain the position related information of the other terminals corresponding to the current sub-base station, that is, the position related information of the current sub-base station corresponding to the position related information of the other terminals is obtained. Moreover, the position-related information of the current sub-base station corresponding to the current terminal or the position-related information of the current sub-base station corresponding to other terminals is actively transmitted by the sub-base station.

For obtaining the position related information of the current terminal first and thus obtaining the position related information of the sub-base station indirectly, for example, the sub-base station may instruct the terminal served by the sub-base station to collect and report the position identification information of the current terminal, and the indication message of the sub-base station may carry the type of the position identification information. Here, the location identification information type corresponds to location identification information included in the location-related information of the femto base station. The location identification information includes geographical location information such as latitude and longitude information, GPS signal characteristic information, base station positioning signal characteristic information. Further, the type of the location identification information carried in the indication message also needs to be determined according to the capability of the current terminal, and the sub-base station can inquire whether the current terminal has the GPS capability or whether the current terminal actively reports that the current terminal has the GPS capability. The current terminal may perform a designated location identification information collection process upon receiving the indication message, for example, receive a GPS signal and/or perform measurement and transmission required for LBS. Here, receiving GPS signals is for terminals that include GPS capability. The current terminal determines whether to generate longitude and latitude information according to the received GPS signal and/or the measurement result or to directly report the received GPS signal and/or the measurement result according to the type of the position identification information requested by the sub-base station.

After receiving the location identification information sent by the current terminal, the femto may further process the information to calculate the location of other terminals. When calculating the positions of other terminals, one case is: for example, the current terminal is used as a reference object, and the positions of other terminals are calculated according to the measurement result reported by the current terminal and/or the received GPS signal. The other situation is that: the position calculation may also be handed over to a specific server, such as an LBS server, for processing. There is also a case where: the sub-base station may further perform a comprehensive processing of the measurements and/or received GPS signals from the plurality of terminals to generate information that can be used to indicate which location ranges can access the sub-base station, i.e. which location ranges belong to the service area of the sub-base station.

For the position-related information of the sub-base station actively transmitted by the sub-base station, for example, the sub-base station may actively provide the position-related information of the sub-base station to the terminal served by the sub-base station. When the position-related information of the femto includes the position identification information, the femto may broadcast and/or unicast its own position identification information to the terminal. The terminal receives the location identification information of the sub-base station broadcast and/or unicast and stores the information for use in scanning, handover and/or access.

The third method embodiment is as follows: the macro base station acquires the position related information of the sub base station; or obtaining the position-related information of the terminal, that is, obtaining the position-related information of the sub-base station corresponding to the position-related information of the terminal. Furthermore, the position related information of the sub base station is actively transmitted to the terminal by the macro base station.

For obtaining the position-related information of the femto base station, for example, the macro base station may obtain the position-related information of the femto base station within the coverage of the macro base station through its own reception/measurement, air interface, relay station, backbone network, and/or backhaul. The position-related information of the femto base station includes a position identification information type and position identification information. Here, the location identification information includes: latitude and longitude information, GPS signal characteristic information and base station positioning signal characteristic information. The position-related information of the femto base station may further include: identification number of sub-base station/index number of sub-base station, carrier frequency, preamble such as content identifying synchronization signal feature, Media Access Control (MAC) layer version, etc. information for communication. Here, there are two cases where the macro base station acquires the location related information of the femto base station, and if the location related information includes the location identification information, one case is: the macro base station directly acquires the position identification information of the sub base station; the other situation is that: the macro base station directly acquires the position identification information of the terminal under the sub base station, and therefore the position identification information of the sub base station is indirectly acquired. For the second case, the macro base station may obtain the location identification information of the terminal through the sub base station, or the macro base station may directly obtain the location identification information of the terminal. For example, when a terminal under the macro base station prepares for or starts to switch to the sub base station, the macro base station may record the location identification information of the terminal as the location identification information that can access the sub base station. The macro base station may maintain such location identification information for provision to the serving terminal.

For the position-related information of the sub-base station actively transmitted by the macro base station, specifically, the macro base station may unicast the position-related information of the sub-base station to the terminal. For example, when the terminal is handed over to the macro base station and the terminal does not store the location related information of the sub base station, the macro base station may actively send the location information of the Open (OSG) sub base station and/or the Closed (CSG) sub base station authorized by the terminal to the terminal. The terminal may receive the location information and store it for use in scanning, handover and/or access.

The fourth embodiment of the method is as follows: and acquiring the position related information of the sub-base station, wherein the position related information of the sub-base station is passively sent to the terminal by the sub-base station under the request of the terminal.

For obtaining the location related information of the sub-base station, the sub-base station may receive the GPS signal and/or perform the measurement and transmission required for LBS, for example, by itself or according to a request from the backbone network or other base stations such as a macro base station. Here, the reception of the GPS signal is for a sub-base station including a GPS or other GPS function. When calculating geographical location information, one case is: the sub-base station may process the GPS signals and/or perform measurements required for LBS to locate its own position, calculate and generate geographical location information, such as latitude and longitude information, from the sub-base station, and transmit to other base stations if necessary. Other base stations herein refer to base stations that previously initiated the request, or control base stations that initially powered up the system. The other situation is that: the sub-base station may also send the GPS signals and/or the measurement results of the measurements required for performing the LBS to a specific server, for example, the LBS server, and then the LBS server calculates the geographical location information of the sub-base station and sends the geographical location information of the sub-base station to the relevant sub-base station.

For the position-related information of the sub-base station passively transmitted by the sub-base station, for example, the terminal may request the sub-base station to provide its position identification information, and the sub-base station may transmit its own position identification information to the terminal after receiving the terminal request. Specifically, the sub-base station may request the sub-base station to transmit the location identification information corresponding to the location information type according to the location information type encapsulated in the terminal request message. For example, if the terminal requests the geographical location information, the sub-base station provides the geographical location information to the terminal. The terminal receives and stores the geographical location information of the sub-base station for use in scanning, handover and/or access.

The fifth embodiment of the method is as follows: in the multiple terminals, the sub-base station acquires the position related information of at least one terminal, and acquires the position related information of the current terminal, that is, acquires the position related information of the current sub-base station corresponding to the position related information of the current terminal. Furthermore, the other terminals use the position related information of the current terminal as a reference value, so as to obtain the position related information of the other terminals corresponding to the current sub-base station, that is, the position related information of the current sub-base station corresponding to the position related information of the other terminals is obtained. In addition, the position-related information of the current sub-base station corresponding to the position-related information of the terminal or the position-related information of the current sub-base station corresponding to the position-related information of other terminals is passively transmitted by the sub-base station at the request of the terminal or other terminals.

For obtaining the position related information of the terminal first and thus indirectly obtaining the position related information of the sub-base station, for example, the sub-base station may instruct the terminal served by the sub-base station to collect and report the position identification information of the current terminal, and the indication message of the sub-base station may carry the type of the position identification information. Here, the location identification information type corresponds to location identification information included in the location-related information of the femto base station. The location identification information includes geographical location information such as latitude and longitude information, GPS signal characteristic information, base station positioning signal characteristic information. Further, the type of the location identification information carried in the indication message also needs to be determined according to the capability of the terminal, and the sub-base station can inquire whether the terminal has the GPS capability or whether the terminal actively reports the GPS capability. The terminal may perform a designated location identification information collection procedure upon receiving the indication message, for example, receiving a GPS signal and/or performing measurement required for LBS and transmitting. Here, receiving GPS signals is for terminals that include GPS capability. And the terminal determines whether longitude and latitude information needs to be generated according to the received GPS signals and/or the measurement results or directly reports the received GPS signals and/or the measurement results according to the type of the position identification information requested by the sub-base station.

For the position-related information of the femto sent passively by the femto, for example, a terminal without GPS capability may request its position identification information from the femto, and after the femto receives the terminal request, the femto may unicast its own position identification information to the terminal. The terminal receives the location identification information and stores it for use in scanning, handover and/or access.

The sixth embodiment of the method is as follows: the macro base station acquires the position related information of the sub base station; or obtaining the position-related information of the terminal, that is, obtaining the position-related information of the sub-base station corresponding to the position-related information of the terminal. The macro base station passively transmits the position-related information of the sub-base station to the terminal at the request of the terminal.

For obtaining the position-related information of the femto base station, for example, the macro base station may obtain the position-related information of the femto base station within the coverage of the macro base station through its own reception/measurement, air interface, relay station, backbone network, and/or backhaul. The position-related information of the femto base station includes a position identification information type and position identification information. Here, the location identification information includes: such as latitude and longitude information, GPS signal characteristic information, and base station positioning signal characteristic information. The position-related information of the femto base station may further include: the identity/index number of the sub-base station, the carrier frequency, the preamble, e.g., identifying the content of the synchronization signal feature, the MAC layer version, etc., are used for communication information. Here, there are two cases where the macro base station acquires the location related information of the femto base station, and if the location related information includes the location identification information, one case is: the macro base station directly acquires the position identification information of the sub base station; the other situation is that: the macro base station directly acquires the position identification information of the terminal under the sub base station, and therefore the position identification information of the sub base station is indirectly acquired. For the second case, the macro base station may obtain the location identification information of the terminal through the sub base station, or the macro base station may directly obtain the location identification information of the terminal. For example, when a terminal under the macro base station prepares for or starts to switch to the sub base station, the macro base station may record the location identification information of the terminal as the location identification information that can access the sub base station. The macro base station may maintain such location identification information for provision to the serving terminal.

For the location related information of the sub base station passively transmitted by the macro base station, specifically, the terminal may request the macro base station to provide the location related information of the sub base station. After receiving the request of the terminal, the macro base station may send the location information of the CSG sub-base station authorized by the OSG sub-base station and/or the terminal to the terminal. The terminal may receive the location information and store it for use in scanning, handover and/or access.

As shown in fig. 3, a method for processing location related information, the method comprising the steps of:

step 201, judging according to the position related information of the sub base station stored by the terminal.

Here, the specific implementation of step 201 includes three cases. In the first case, the terminal determines the position according to the position related information of the sub-base station received and stored by the terminal. In the second case, the terminal performs the determination based on the generated and stored position-related information of the femto base station. In the third case, the terminal determines based on the combined information composed of the received and stored position-related information of the femto cell and the generated and stored position-related information of the femto cell.

Step 202, determining whether the terminal has entered and/or is ready to enter the service area of the sub-base station. If yes, go to step 203; otherwise, step 204 is performed.

Here, ready-to-enter means: the terminal is close to the service area of the sub-base station and does not enter the service area of the sub-base station.

Step 203, executing scanning, and/or switching, and/or accessing; proceed to step 205.

Step 204, no scanning, and/or switching, and/or accessing process is performed.

And step 205, ending the processing flow of the position related information of the current sub-base station.

Wherein the method further comprises: the terminal initiates the processing of scanning, and/or switching, and/or accessing and determines the processing priority order of scanning, and/or switching, and/or accessing according to the position related information of the sub-base station, and/or the current position identification information of the terminal, and/or the neighbor list information, and/or the interference signal strength currently measured by the terminal, and/or the current state of the terminal, and/or the indication of the base station.

The seventh embodiment of the method is as follows: the terminal judges the received position related information of the sub-base station, and can accurately judge whether the terminal enters the service area of the sub-base station or not through the judgment after one-time positioning. Furthermore, the terminal is a terminal with GPS capability.

A terminal within the macro base station service area may request the serving base station to provide location information for sub-base stations it may access. And the terminal receives the position information of the sub base station and stores the position information. A terminal with GPS capability can calculate its own position from GPS signals. By comparing the position of the terminal with the position of the sub-base station or the position of the terminal under the sub-base station, the terminal can judge whether the terminal enters the service area of the sub-base station. When the terminal judges that the terminal enters the service area of the sub-base station, the terminal can directly initiate the switching from the macro base station to the sub-base station.

The eighth embodiment of the method is as follows: the terminal judges the received position related information of the sub-base station, and can accurately judge whether the terminal enters the service area of the sub-base station or not through the judgment after scanning and positioning for many times. Moreover, the terminal is a terminal that does not include GPS capability.

A terminal within the macro base station service area may request the serving base station to provide location information for sub-base stations it may access. And the terminal receives the position information of the sub base station and stores the position information. Terminals without GPS capability can locate their own position using other LBS location methods. Here, other LBS location methods include: the terminal measures the downlink signal of the positioning base station or measures the uplink signal of the terminal. Through these LBS location methods, the terminal can acquire its own location. At this time, the positioning may not be accurate as the GPS positioning, and the terminal may determine the distance between the terminal and the sub-base station according to the position of the terminal and the position of the sub-base station.

If the distance between the terminal and the base station is far away, the terminal does not need to perform scanning, and positioning is performed after a relatively long time interval or the terminal moves a significant distance, so as to judge the distance between the terminal and the base station. This process continues until the terminal finds that one or more sub-base stations are nearby after positioning, and may not be able to make a determination whether to enter the service area of the sub-base station due to the limitation of positioning accuracy. When the switching condition is satisfied, that is, when the terminal is located within the signal coverage of the sub-base station and the signal communication strength between the terminal and the sub-base station can be ensured, the base station or the terminal can initiate the switching from the macro base station to the sub-base station. And finally, the terminal is smoothly accessed to the sub base station.

The ninth embodiment of the method is as follows: the terminal judges the generated position related information of the sub-base station, and can accurately judge whether the terminal enters the service area of the sub-base station or not through the judgment after one-time positioning. Furthermore, the terminal is a terminal with GPS capability.

A terminal with GPS capability can calculate its own position from GPS signals. When it is accessed to the sub-base station, it can obtain its own position identification information by GPS positioning. Then, the terminal associates the position with the information of the sub-base station to generate the position related information of the sub-base station. Here, the information of the sub-base station may be a base station identification number/index number, a carrier frequency or a preamble. Then, when the terminal is in the macro base station service area, the terminal may compare the position of the terminal with the position related information of the sub base station, where the position related information of the sub base station is actually the historical position information of the terminal itself, and the position of the terminal is the position where the terminal can access the sub base station. When finding that the terminal reaches the historical position where the terminal has accessed the sub-base station, the terminal can judge that the terminal can be switched to the sub-base station, and then directly initiates the switching from the macro base station to the sub-base station.

The tenth embodiment of the method is as follows: the terminal judges the generated position related information of the sub-base station, and can accurately judge whether the terminal enters the service area of the sub-base station or not through the judgment after scanning and positioning for many times. Moreover, the terminal is a terminal that does not include GPS capability.

When the terminal without GPS capability accesses the sub-base station, it can use other LBS positioning method to position itself. Here, other LBS location methods include: the terminal measures the downlink signal of the positioning base station or measures the uplink signal of the terminal. Through these LBS location methods, the terminal can acquire its own location. This time may not be as accurate as a GPS fix. The location of the terminal means a location where the terminal can access the sub-base station. Then, the terminal associates the position with the information of the sub-base station to generate the position-related information of the sub-base station. Here, the information of the sub-base station may be a base station identification number/index number, a carrier frequency or a preamble. Then, when the terminal is in the service area of the macro base station, the terminal can position itself again by using the LBS positioning method, and judge the distance between the two positions according to the position and the historical position, if the distance between the two positions is far away, the terminal does not need to scan, and positioning is carried out after a long time interval or the terminal moves a significant distance, so as to judge the distance from the position which can be accessed to the sub base station. This process continues until the terminal finds that the historical location is nearby after being located. The determination of whether or not the sub-base station has been entered into the service area may not be made due to limitations in positioning accuracy, and more than one sub-base station may be nearby. At this time, the terminal may scan the associated sub-base station, and accurately determine whether to switch to the sub-base station through signal measurement. When the switching condition is satisfied, that is, when the terminal is located within the signal coverage of the sub-base station and the signal communication strength between the terminal and the sub-base station can be ensured, the base station or the terminal can initiate the switching from the macro base station to the sub-base station. And finally, the terminal is smoothly accessed to the sub base station.

The eleventh embodiment of the method is as follows: and combining the received position related information of the sub-base station with the generated position related information of the sub-base station, judging the obtained combined information by the terminal, and judging whether the terminal enters the service area of the sub-base station or not accurately by judging after positioning once. Furthermore, the terminal is a terminal with GPS capability.

A terminal with GPS capability can calculate its own position from GPS signals. For the accessed sub-base station, the terminal can acquire the current position identification information through GPS positioning. Then, the terminal associates the position with the information of the sub-base station to generate the position related information of the sub-base station. Here, the information of the sub-base station may be a base station identification number/index number, a carrier frequency or a preamble. For the sub-base stations that have not been accessed, the terminal may request the serving base station, such as the macro base station, for the position-related information of the OSG sub-base station and the authorized CSG sub-base stations. Then, the terminal stores the received position-related information of the sub-base station and the position-related information of the sub-base station generated by the terminal.

Then, when the terminal is in the macro base station service area, the terminal can compare the position of the terminal with the position related information of the sub base station, and the position related information of the sub base station comprises the received sub base station position identification information and the historical position information of the terminal. When finding that the terminal enters the service area of the sub-base station, the terminal can judge that the terminal can be switched to the sub-base station, and then directly initiates the switching from the macro base station to the sub-base station.

The twelfth embodiment of the method is as follows: and combining the received position related information of the sub-base station with the generated position related information of the sub-base station, judging the obtained combined information by the terminal, and judging whether the terminal enters the service area of the sub-base station or not accurately through the judgment after scanning and positioning for multiple times. Moreover, the terminal is a terminal that does not include GPS capability.

When the terminal without GPS capability accesses the sub-base station, it can use other LBS positioning method to position itself. Here, other LBS location methods include: the terminal measures the downlink signal of the positioning base station or measures the uplink signal of the terminal. Through these LBS location methods, the terminal can acquire its own location. This time may not be as accurate as a GPS fix. The location of the terminal means a location where the terminal can access the sub-base station. Then, the terminal associates the position with the information of the sub-base station to generate the position-related information of the sub-base station. Here, the information of the sub-base station may be a base station identification number/index number, a carrier frequency or a preamble. For the sub-base stations that have not been accessed, the terminal may request the serving base station, such as possibly a macro base station, for location related information of the OSG sub-base station and the authorized CSG sub-base stations. Then, the terminal stores the received position-related information of the sub-base station and the position-related information of the sub-base station generated by the terminal.

Then, when the terminal is in the service area of the macro base station, the terminal may use the LBS location method to locate itself again, and determine the distance between two locations according to its location and the relevant location of the sub base station, where the relevant location of the sub base station includes: the location of the sub-base station and/or the location where the sub-base station can be accessed. If the distance between the access point and the base station is far away, the terminal does not need to perform scanning, and positioning is performed after a relatively long time interval or the terminal moves a significant distance, so as to judge the distance from the position where the access point can access the sub-base station. This process continues until the terminal finds a historical location after positioning or the femto base station is nearby. The determination of whether or not the sub-base station has been entered into the service area may not be made due to limitations in positioning accuracy, and more than one sub-base station may be nearby. At this time, the terminal may scan the sub-base stations, and accurately determine whether to switch to the sub-base stations through signal measurement. The priority of the scanning may be determined from the inter-location distance comparison. When the switching condition is satisfied, that is, when the terminal is located within the signal coverage of the sub-base station and the signal communication strength between the terminal and the sub-base station can be ensured, the base station or the terminal can initiate the switching from the macro base station to the sub-base station. And finally, the terminal is smoothly accessed to the sub base station.

It should be noted that the Macro base station mentioned above is represented by Macro BS, the small base station is represented by micro BS, the micro base station is represented by Pico BS, the sub base station is represented by Femto BS/Femtocell BS, the identification number of the sub base station is represented by BS ID, the Index number of the sub base station is represented by BS Index, and the Preamble of the sub base station is represented by Preamble.

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

1. A method for transmitting location related information, the method comprising:

2. The method of claim 1, wherein the sending further comprises, prior to the sending: the base station acquires position related information of the sub base station.

3. The method according to claim 2, wherein the base station obtains the position-related information of the sub-base station through its own reception/measurement/calculation, and/or over the air interface, and/or a relay station, and/or a backbone network, and/or a backhaul.

4. The method of claim 3, wherein the base station comprises a macro base station, a small base station, a micro base station, a sub base station; the transmission mode comprises at least one of broadcasting, multicasting and unicasting.

5. The method according to claim 4, wherein the obtaining is specifically: obtaining position related information of the sub base station by the sub base station;

6. The method according to claim 4, wherein the obtaining is specifically: the sub-base station acquires the position related information of the terminal, and the sub-base station acquires the position related information of the sub-base station according to the position related information of the terminal;

7. The method of claim 6, wherein the obtaining the position-related information of the femto base stations further comprises:

8. The method according to claim 4, wherein the obtaining is specifically: obtaining the position related information of the sub base station by the macro base station; or,

9. The method according to any one of claims 1 to 8, wherein the femto is specifically: the sub-base station that the terminal can access includes: the open sub-base station and/or the terminal obtains the authorized special sub-base station.

10. The method according to any of claims 1 to 8, wherein the sub-base station comprises: the sub-base stations which are accessed by the terminal and/or the sub-base stations which are not accessed by the terminal.

11. The method according to any one of claims 5 to 8, characterized in that the method further comprises: the position related information of the sub-base station is carried in the neighbor cell list message, or carried in the mapping relation information of the sub-base station and the macro base station, or carried by other messages;

12. The method according to claim 11, wherein the location identification information includes at least one of three ways, specifically: the positioning method comprises the following steps that geographical position information of the sub-base station and/or the terminal, satellite positioning GPS signal characteristic information received by the sub-base station and/or the terminal, and base station positioning signal characteristic information measured by the sub-base station and/or the terminal;

13. The method of claim 12, wherein the type of location identification information identifies the location identification information and further relates to at least one of a location of the sub-base station, a location of the sub-base station accessible to the terminal, and a capability of the terminal.

14. The method of claim 13, wherein the request message further encapsulates the type of location identification information, and wherein the sending further comprises: and sending the position identification information corresponding to the position identification information type to the terminal.

15. A system for transmitting location-related information, the system comprising: and the sending unit is used for sending the position related information of the sub-base station to the terminal by the base station so as to support the terminal to be accessed to the sub-base station and/or the terminal to be switched to the sub-base station and/or the terminal to be positioned to the sub-base station and/or the terminal to realize self positioning.

16. A method for processing location related information, the method comprising:

17. The method according to claim 16, wherein the terminal further performs scanning, and/or handover, and/or access according to the location related information of the femto cell received and stored by the terminal, and/or the location related information of the femto cell generated and stored by the terminal.

18. The method according to claim 17, wherein the performing is specifically: judging whether the terminal enters and/or prepares to enter a service area of the sub-base station according to the position related information of the sub-base station received and stored by the terminal; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

19. The method according to claim 17, wherein the performing is specifically: judging whether the terminal enters and/or prepares to enter a service area of the sub-base station according to the position related information of the sub-base station generated and stored by the terminal; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

20. The method according to claim 17, wherein the performing is specifically: judging whether the terminal enters and/or is ready to enter a service area of the sub-base station according to combined information formed by the position related information of the sub-base station received and stored by the terminal and the position related information of the generated and stored sub-base station; if yes, scanning, and/or switching, and/or accessing are/is executed; otherwise, no scanning, and/or handover, and/or access processing is performed.

21. The method of claim 16, further comprising: the terminal initiates the processing of scanning, and/or switching, and/or accessing and determines the processing priority sequence of scanning and/or switching and/or accessing according to the position related information of the sub-base station, and/or the current position identification information of the terminal, and/or the neighbor list message, and/or the interference signal strength currently measured by the terminal, and/or the current state of the terminal, and/or the indication of the base station.

22. A system for processing location related information, the system comprising: and the execution unit is used for the terminal to execute scanning, and/or switching, and/or accessing processing according to the position related information of the sub-base station.