CN104812023A - Small-bandwidth universal mobile telecommunications system (UMTS) cell search method, user equipment and communication device - Google Patents

Abstract

The embodiment of the invention discloses a small-bandwidth UMTS cell search method, user equipment and communication equipment, relates to the field of communication technology, and can save the time required for searching the small-bandwidth UMTS cell. The method of the present invention includes: searching for and determining a Universal Mobile Telecommunications System (UMTS) cell; obtaining broadcast information broadcast by a communication device of the UMTS cell through a broadcast channel (BCH), and the broadcast information at least includes: The cell information of the adjacent small-bandwidth UMTS cell; according to the cell information, search for and access the small-bandwidth UMTS cell. The present invention is applicable to the scene of searching for a small bandwidth UMTS cell.

Description

Method for small bandwidth UMTS cell search, user equipment and communication equipment

technical field

The present invention relates to the field of communication technology, in particular to a method for searching a small-bandwidth UMTS cell, user equipment and communication equipment.

Background technique

In UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System), the user equipment obtains the network through the cell search, and initiates registration to the cell network. After successful registration, it can reside in the cell network and obtain services. Small-bandwidth UMTS refers to UMTS with a system bandwidth of less than 5MHz. In order to flexibly configure frequency resources, operators can use scattered frequency resources to place small-bandwidth UMTS. When searching for small-bandwidth UMTS cells, user equipment needs to search for each possible small-bandwidth UMTS. UMTS search, for example: the user equipment searches for small bandwidth UMTS cells, if the user equipment supports UMTS with bandwidths of 5MHz, 2.5MHz, and 1.25MHz, the user equipment needs to search for UMTS cells with bandwidths of 5MHz, 2.5MHz, and 1.25MHz respectively , as shown in Figure 1, within the frequency range with detectable power density, the user equipment needs to search the frequency point of the UMTS cell with a small bandwidth step by step with a step size of 200kHz, and set UMTS to support three different bandwidths Therefore, the same search process needs to be performed three times, so that it takes a long time for the user equipment to search for a small-bandwidth UMTS cell.

In order to solve the problem that it takes a long time for the user equipment to search for a small-bandwidth UMTS cell, the existing technology stores the frequency information of the UMTS cell where the user equipment has camped and its adjacent cells in the user equipment. When the user equipment searches for a small-bandwidth UMTS cell , directly search in the stored frequency information, and connect the user equipment to the searched small-bandwidth UMTS cell according to the frequency information, saving the time spent in searching for the small-bandwidth UMTS cell.

However, when the user equipment is in a cell that has not been camped on, the frequency information of this cell and its neighboring cells is not stored in advance, and the frequency information of this cell and its neighboring cells cannot be searched in the stored frequency information, and it still needs to be searched many times. The frequency point search for the small-bandwidth UMTS cell based on the primary synchronization channel is performed step by step with a certain step length, so it still takes a long time to search for the required small-bandwidth UMTS cell.

Contents of the invention

Embodiments of the present invention provide a method for searching a small-bandwidth UMTS cell, user equipment and communication equipment, which can save the time required for searching for a small-bandwidth UMTS cell.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for searching a small-bandwidth UMTS cell, including:

Search and identify Universal Mobile Telecommunications System (UMTS) cells;

Obtain broadcast information broadcast by the communication device of the UMTS cell through a broadcast channel (BCH), where the broadcast information at least includes: cell information of a small-bandwidth UMTS cell adjacent to the UMTS cell;

Search and access the small bandwidth UMTS cell according to the cell information.

In the second aspect, the embodiment of the present invention also provides a method for searching a small-bandwidth UMTS cell, including:

Obtaining cell information of a small-bandwidth UMTS cell adjacent to a Universal Mobile Telecommunications System (UMTS) cell, and adding the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell;

The broadcast information is broadcast through a broadcast channel (BCH) of the UMTS cell, so that the user equipment obtains the cell information from the broadcast information, and searches for and accesses the small-bandwidth UMTS cell according to the cell information.

In a third aspect, an embodiment of the present invention further provides a user equipment, including:

A determining module, configured to search for and determine a Universal Mobile Telecommunications System (UMTS) cell;

An acquisition module, configured to acquire broadcast information broadcast by a communication device of the UMTS cell through a broadcast channel (BCH), where the broadcast information at least includes: cell information of a small-bandwidth UMTS cell adjacent to the UMTS cell;

A search module, configured to search for and access the small-bandwidth UMTS cell according to the cell information.

In a fourth aspect, the embodiment of the present invention further provides a communication device, including:

A joining module, configured to obtain cell information of a small-bandwidth UMTS cell adjacent to a Universal Mobile Telecommunications System (UMTS) cell, and add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell;

A broadcast module, configured to broadcast the broadcast information through a broadcast channel (BCH) of the UMTS cell, so that user equipment can obtain the cell information from the broadcast information, and search for and access the cell information according to the cell information. Small bandwidth UMTS cell.

The embodiment of the present invention provides a small-bandwidth UMTS cell search method, user equipment, and communication device, which can first search for a UMTS cell, and obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell after the UMTS cell is found. , and obtain the cell information of the adjacent small-bandwidth UMTS cell from the broadcast information, and search for and access the small-bandwidth UMTS cell according to the cell information of the adjacent small-bandwidth UMTS cell. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of searching for a small bandwidth UMTS cell thus saves the time required for searching for a small bandwidth UMTS cell.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

FIG. 1 is a schematic diagram of an example of searching for a small-bandwidth UMTS cell in the prior art;

FIG. 2 is a flowchart of a method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of an example of a cell information list provided by an embodiment of the present invention;

4a and 4b are flow charts of a specific implementation of a method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention;

FIG. 5 is a flow chart of another method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a user equipment provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a specific implementation manner of a user equipment provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another specific implementation manner of a user equipment provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The technical solution provided by the embodiment of the present invention is applied to the scene of searching for a small-bandwidth UMTS cell. The user equipment searches for and determines a UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) cell, and the communication device searches the small-bandwidth UMTS cell adjacent to the UMTS cell. The cell information of the UMTS cell is added to the broadcast information of the UMTS cell, and the broadcast information is broadcast. The user equipment obtains the broadcast information, searches for and accesses a small-bandwidth UMTS cell according to the broadcast information. In practical applications, the user equipment may be a mobile phone, a PAD, etc., and the communication device may be a base station, a network server, and the like.

The embodiment of the present invention provides a small bandwidth UMTS cell search method, as shown in Figure 2, including:

101. A user equipment searches for and determines a Universal Mobile Telecommunications System (UMTS) cell.

Wherein, the bandwidth of UMTS is 5 MHz, and the user equipment can scan in a frequency range with detectable power density at a step size of 200 kHz according to a conventional method to obtain the center frequency point of the UMTS cell, so as to determine the UMTS cell. The user equipment can also change the step size or use other optimization means to scan and obtain the center frequency point of the UMTS cell to determine the UMTS cell.

102. Acquire broadcast information broadcast by a communication device in the UMTS cell through a broadcast channel (BCH).

Among them, after the user equipment determines the UMTS cell, it can use P-SCH (Primary Synchronization Code Channel, primary synchronization channel) for time slot synchronization, and use S-SCH (Secondary Synchronization Code Channel, secondary synchronization channel) for frame synchronization and primary scrambling code Group identification, use P-CPICH (Primary Common Pilot Channel, primary common pilot channel) to identify the primary scrambling code, obtain the primary scrambling code, and decode P-CCPCH (Primary Common Control Physical Channel, primary public control physical channel), so as to obtain BCH (Broadcast Channel, broadcast channel) broadcast information.

Wherein, the broadcast information includes at least the cell information of the small-bandwidth UMTS cells adjacent to the UMTS cell, and the cell information of the small-bandwidth UMTS cells in the broadcast information may be represented in a list. For example, the cell information of the small-bandwidth UMTS cell in the broadcast information forms a list, and the cell information list is shown in FIG. 3 .

Optionally, the cell information includes at least the bandwidth and center frequency of the small-bandwidth UMTS cell, and may also include information such as a frequency band of the small-bandwidth UMTS cell. By obtaining the bandwidth and center frequency point of the small-bandwidth UMTS cell, it is possible to quickly search for the small-bandwidth UMTS cell.

103. Search for and access the small-bandwidth UMTS cell according to the cell information.

Wherein, the user equipment searches for a small-bandwidth UMTS cell according to the obtained cell information, and can obtain synchronization with the small-bandwidth UMTS cell through the P-SCH, that is, access the small-bandwidth UMTS cell.

A method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain the broadcast information from the broadcast information The cell information of the adjacent small-bandwidth UMTS cells is obtained, and the small-bandwidth UMTS cells are searched for and accessed according to the cell information of the adjacent small-bandwidth UMTS cells. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of searching for a small bandwidth UMTS cell thus saves the time required for searching for a small bandwidth UMTS cell.

Optionally, on the basis of the solution shown in FIG. 2 , an embodiment of the present invention also provides a solution for a small-bandwidth UMTS cell search method, which further refines the execution process of 103 in FIG. 1 , wherein, 103 It can be specifically implemented as 1031a-1032a, as shown in Figure 4a, including:

1031a. Search for the small-bandwidth UMTS cell, and acquire the received signal strength indication (RSSI) of each of the searched small-bandwidth UMTS cells.

Among them, if multiple small-bandwidth UMTS cells are found in the process of searching for small-bandwidth UMTS cells, the RSSI (Received Signal Strength Indicator, Received Signal Strength Indicator) of each small-bandwidth UMTS cell is obtained, and each small-bandwidth UMTS The RSSI of the cell is compared.

1032a. Select and access the small-bandwidth UMTS cell with the strongest RSSI.

Wherein, the user equipment receives the best signal from the small-bandwidth UMTS cell with the strongest RSSI, selects the small-bandwidth UMTS cell with the strongest RSSI among the small-bandwidth UMTS cells searched, and accesses it.

A method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain the broadcast information from the broadcast information Obtain cell information of adjacent small-bandwidth UMTS cells, search for small-bandwidth UMTS cells according to the cell information of adjacent small-bandwidth UMTS cells, and when more than one small-bandwidth UMTS cell is found, select the small-bandwidth UMTS cell with the strongest RSSI to access . Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of wideband UMTS cells saves the time required to search for small bandwidth UMTS cells; and selects the small bandwidth UMTS cell with the strongest RSSI to access among the searched small bandwidth UMTS cells, ensuring the small bandwidth of the access The signal quality of bandwidth UMTS cells.

Optionally, on the basis of the solutions shown in FIG. 2 and FIG. 4a, the embodiment of the present invention also provides a solution of a small bandwidth UMTS cell search method, wherein 104 is added, and the execution process of 103 is further detailed 103 can also be specifically implemented as 1031b, as shown in Figure 4b, including:

104. Access the UMTS cell.

Wherein, when a UMTS cell is found, the UMTS cell is first accessed.

1031b. Detect whether the small-bandwidth UMTS cell meets a handover condition.

Wherein, it is detected whether the small-bandwidth UMTS cell satisfies the handover condition, and the handover condition can be preset by the user. For example: the switching condition is that the value of RSRP (Reference Signal Receiving Power, reference signal receiving power) of the small bandwidth UMTS cell is higher than that of the already accessed UMTS cell.

1032b. If the handover condition is met, handover the user equipment from the UMTS cell to the small bandwidth UMTS cell.

Wherein, if the small-bandwidth UMTS cell satisfies the handover condition, the handover of the user equipment from the UMTS cell to the small-bandwidth UMTS cell is triggered. For example: the handover condition in the example of 1031b, the user equipment is a mobile phone, and the RSRP (Reference Signal Receiving Power) value of the small-bandwidth UMTS cell is higher than that of the UMTS cell that has been accessed, then the mobile phone will switch from the UMTS The value of the cell handover to RSRP is higher than that of the UMTS cell with a small bandwidth UMTS cell.

Wherein, if the small-bandwidth UMTS cell does not meet the handover condition, the user equipment remains in the state of accessing the UMTS cell before.

A method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain the broadcast information from the broadcast information Obtain cell information of adjacent small-bandwidth UMTS cells, access the searched UMTS cells first, and check whether the small-bandwidth UMTS cells meet the handover conditions. If the small-bandwidth UMTS cells meet the handover conditions, the user equipment is handed over from the UMTS cell to the small-bandwidth UMTS district. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of searching for a small bandwidth UMTS cell thus saves the time required for searching for a small bandwidth UMTS cell.

The embodiment of the present invention also provides a small bandwidth UMTS cell search method, as shown in Figure 5, including:

201. Acquire cell information of a small-bandwidth UMTS cell adjacent to a Universal Mobile Telecommunications System (UMTS) cell, and add the cell information of the small-bandwidth UMTS cell to broadcast information of the UMTS cell.

Among them, the communication device can enable the function of automatic neighbor relationship, notify the user equipment within the broadcast range of the communication device to search for small-bandwidth UMTS cells, and transmit the cell information of the searched small-bandwidth UMTS cells to the communication device, and the communication device then sends the small-bandwidth UMTS cell information to the communication device. The cell information of the bandwidth UMTS cell is added to the broadcast information of the UMTS cell. It is also possible to manually add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell during network planning. The broadcast information of the UMTS cell can be configured and regulated by the OAM (Operation Administration and Maintenance) system.

Wherein, the cell information of the small-bandwidth UMTS cell in the broadcast information may be represented in a list. For example, the cell information of the small-bandwidth UMTS cell in the broadcast information forms a list, and the cell information list is shown in FIG. 3 .

Optionally, the cell information includes at least the bandwidth and center frequency of the small-bandwidth UMTS cell, and may also include information such as a frequency band of the small-bandwidth UMTS cell.

202. Broadcast the broadcast information through a broadcast channel (BCH) of the UMTS cell, so that user equipment obtains the cell information from the broadcast information, and searches for and accesses the small-bandwidth UMTS according to the cell information district.

Wherein, the communication device broadcasts broadcast information including at least cell information of the small-bandwidth UMTS cell, so that the user equipment can search for and access the small-bandwidth UMTS cell according to the cell information in the broadcast information.

A method for searching a small-bandwidth UMTS cell provided by an embodiment of the present invention can obtain cell information of a small-bandwidth UMTS cell adjacent to the UMTS cell, and add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell. The communication device broadcasts the broadcast information of the UMTS cell, so that the user equipment obtains the cell information of the small-bandwidth UMTS cell from the broadcast information, and searches for and accesses the small-bandwidth UMTS cell according to the cell information. Compared with the prior art, the communication device in the present invention can obtain the cell information of the small-bandwidth UMTS cell adjacent to the UMTS cell, and add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell, so that the user equipment according to the broadcast information The cell information of small and medium bandwidth UMTS cells can be quickly searched and connected to small bandwidth UMTS cells. When the user equipment is in a cell that has not been camped on, it can obtain the cell information of small bandwidth UMTS cells from the broadcast information of BCH, which avoids Since the user equipment does not store the frequency information of the cell, the process of searching for the small-bandwidth UMTS cell is required, so the time required for searching for the small-bandwidth UMTS cell is saved.

The embodiment of the present invention also provides a user equipment 300, as shown in FIG. 6, including:

A determining module 301, configured to search for and determine a Universal Mobile Telecommunications System (UMTS) cell.

An acquiring module 302, configured to acquire broadcast information broadcast by a communication device of the UMTS cell through a broadcast channel (BCH).

Wherein, the broadcast information includes at least cell information of small-bandwidth UMTS cells adjacent to the UMTS cell.

Optionally, the cell information includes at least the bandwidth and center frequency of the small-bandwidth UMTS cell.

The searching module 303 is configured to search for and access the small-bandwidth UMTS cell according to the cell information.

A user equipment provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain adjacent small bandwidths from the broadcast information The cell information of the UMTS cell searches for and accesses the small-bandwidth UMTS cell according to the cell information of the adjacent small-bandwidth UMTS cell. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of searching for a small bandwidth UMTS cell thus saves the time required for searching for a small bandwidth UMTS cell.

Optionally, as shown in FIG. 7, the search module 303 includes:

The searching unit 3031 is configured to search for the small-bandwidth UMTS cell, and acquire the received signal strength indication (RSSI) of each of the small-bandwidth UMTS cells found.

The selection unit 3032 is configured to select and access the small-bandwidth UMTS cell with the strongest RSSI.

A user equipment provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain adjacent small bandwidths from the broadcast information The cell information of the UMTS cell searches the small bandwidth UMTS cell according to the cell information of the adjacent small bandwidth UMTS cell, and when more than one small bandwidth UMTS cell is found, selects the small bandwidth UMTS cell with the strongest RSSI to access. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of wideband UMTS cells saves the time required to search for small bandwidth UMTS cells; and selects the small bandwidth UMTS cell with the strongest RSSI to access among the searched small bandwidth UMTS cells, ensuring the small bandwidth of the access The signal quality of bandwidth UMTS cells.

Optionally, as shown in Figure 8, also include:

The access module 304 is configured to access the UMTS cell.

The search module 303 includes:

The detecting unit 3033 is configured to detect whether the small-bandwidth UMTS cell satisfies a handover condition.

The switching unit 3034 is configured to switch the user equipment from the UMTS cell to the small-bandwidth UMTS cell when the switching condition is met.

A user equipment provided by an embodiment of the present invention can first search for a UMTS cell, and after searching for a UMTS cell, obtain broadcast information of a BCH (Broadcasting Channel, broadcast channel) of the UMTS cell, and obtain adjacent small bandwidths from the broadcast information For the cell information of the UMTS cell, access the searched UMTS cell first, and check whether the small-bandwidth UMTS cell meets the handover conditions. If the small-bandwidth UMTS cell meets the handover conditions, the user equipment is handed over from the UMTS cell to the small-bandwidth UMTS cell. Compared with the prior art, the mobile device in the present invention can obtain the cell information of the adjacent small-bandwidth UMTS cell of the UMTS cell from the BCH broadcast information of the searched UMTS cell, and can quickly search and access the small bandwidth UMTS cell according to the cell information. Broadband UMTS cell, when the user equipment is in a cell that has not been camped on, the cell information of the small bandwidth UMTS cell can be obtained from the broadcast information of the BCH, which avoids the need to search for small bandwidth because the user equipment does not store the frequency information of the cell The process of searching for a small bandwidth UMTS cell thus saves the time required for searching for a small bandwidth UMTS cell.

The embodiment of the present invention also provides a communication device 400, as shown in FIG. 9 , including:

The adding module 401 is configured to acquire cell information of a small-bandwidth UMTS cell adjacent to a Universal Mobile Telecommunications System (UMTS) cell, and add the cell information of the small-bandwidth UMTS cell to broadcast information of the UMTS cell.

The broadcast module 402 is configured to broadcast the broadcast information through the broadcast channel (BCH) of the UMTS cell, so that the user equipment obtains the cell information from the broadcast information, and searches and accesses the cell information according to the cell information. The small bandwidth UMTS cell described above.

Optionally, the cell information includes at least the bandwidth and center frequency of the small-bandwidth UMTS cell.

A communication device provided by an embodiment of the present invention can acquire cell information of a small-bandwidth UMTS cell adjacent to a UMTS cell, and add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell, and the communication device broadcasts the UMTS cell broadcast information, so that the user equipment obtains the cell information of the small-bandwidth UMTS cell from the broadcast information, and searches for and accesses the small-bandwidth UMTS cell according to the cell information. Compared with the prior art, the communication device in the present invention can obtain the cell information of the small-bandwidth UMTS cell adjacent to the UMTS cell, and add the cell information of the small-bandwidth UMTS cell to the broadcast information of the UMTS cell, so that the user equipment according to the broadcast information The cell information of small and medium bandwidth UMTS cells can be quickly searched and connected to small bandwidth UMTS cells. When the user equipment is in a cell that has not been camped on, it can obtain the cell information of small bandwidth UMTS cells from the broadcast information of BCH, which avoids Since the user equipment does not store the frequency information of the cell, the process of searching for the small-bandwidth UMTS cell is required, so the time required for searching for the small-bandwidth UMTS cell is saved.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant parts, please refer to part of the description of the method embodiment.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (12)

1. a method for little bandwidth UMTS Cell searching, is characterized in that, comprising:

User equipment searches also determines universal mobile telecommunications system (UMTS) community;

The broadcast message that the communication equipment obtaining described UMTS community is broadcasted by broadcast channel (BCH), described broadcast message at least comprises: the cell information of the little bandwidth UMTS community adjacent with described UMTS community;

According to described cell information, search for and access described little bandwidth UMTS community.

2. method according to claim 1, is characterized in that, described cell information at least comprises: the bandwidth sum center frequency point of described little bandwidth UMTS community.

3. the method according to any one of claim 1 or 2, is characterized in that, described search also accesses described little bandwidth UMTS community, comprising:

Search for described little bandwidth UMTS community, and obtain search each described in the received signal strength indicator (RSSI) of little bandwidth UMTS community;

Choose and access the strongest described little bandwidth UMTS community of described RSSI.

4. method according to claim 1, is characterized in that, described according to described cell information, search for and before accessing described little bandwidth UMTS community, also comprises: access described UMTS community;

Described according to described cell information, search for and access described little bandwidth UMTS community, comprising:

Detect described little bandwidth UMTS community and whether meet switching condition;

If meet described switching condition, then described subscriber equipment is from described UMTS cell merge to described little bandwidth UMTS community.

5. a method for little bandwidth UMTS Cell searching, is characterized in that, comprising:

Communication equipment obtains the cell information of the little bandwidth UMTS community adjacent with universal mobile telecommunications system (UMTS) community, and the cell information of described little bandwidth UMTS community is added the broadcast message of described UMTS community;

Broadcast described broadcast message by the broadcast channel (BCH) of described UMTS community, so that subscriber equipment obtains described cell information from described broadcast message, and search for according to described cell information and access described little bandwidth UMTS community.

6. method according to claim 5, is characterized in that, described cell information at least comprises: the bandwidth sum center frequency point of described little bandwidth UMTS community.

7. a subscriber equipment, is characterized in that, comprising:

Determination module, for searching for and determining universal mobile telecommunications system (UMTS) community;

Acquisition module, the broadcast message that the communication equipment for obtaining described UMTS community is broadcasted by broadcast channel (BCH), described broadcast message at least comprises: the cell information of the little bandwidth UMTS community adjacent with described UMTS community;

Search module, for according to described cell information, searches for and accesses described little bandwidth UMTS community.

8. subscriber equipment according to claim 7, is characterized in that, described cell information at least comprises: the bandwidth sum center frequency point of described little bandwidth UMTS community.

9. the subscriber equipment according to any one of claim 7 or 8, is characterized in that, described search module, comprising:

Search unit, for searching for described little bandwidth UMTS community, and obtain search each described in the received signal strength indicator (RSSI) of little bandwidth UMTS community;

Choose unit, for choosing and accessing the strongest described little bandwidth UMTS community of described RSSI.

10. subscriber equipment according to claim 7, is characterized in that, also comprises:

Access module, for accessing described UMTS community;

Described search module, comprising:

Whether detecting unit, meet switching condition for detecting described little bandwidth UMTS community;

Switch unit, for when meeting described switching condition, described subscriber equipment is from described UMTS cell merge to described little bandwidth UMTS community.

11. 1 kinds of communication equipments, is characterized in that, comprising:

Adding module, for obtaining the cell information of the little bandwidth UMTS community adjacent with universal mobile telecommunications system (UMTS) community, and the cell information of described little bandwidth UMTS community being added the broadcast message of described UMTS community;

Broadcast module, broadcasts described broadcast message for the broadcast channel (BCH) by described UMTS community, so that subscriber equipment obtains described cell information from described broadcast message, and searches for according to described cell information and accesses described little bandwidth UMTS community.

12. communication equipments according to claim 11, is characterized in that, described cell information at least comprises: the bandwidth sum center frequency point of described little bandwidth UMTS community.