WO2009089789A1

WO2009089789A1 - Method, terminal and base station for band accessing and switching

Info

Publication number: WO2009089789A1
Application number: PCT/CN2009/070077
Authority: WO
Inventors: Ping Yu; Linfeng Xia
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2008-01-10
Filing date: 2009-01-08
Publication date: 2009-07-23
Also published as: CN101483917A

Abstract

A method, terminal and base station for band accessing and switching are provided. The method includes: the terminal receives a band switching indication message from the base station, the band switching indication message carries the identification information of the target band; using the target band corresponding to the identification information carried by the band switching indication message, the terminal establishes a connection with the base station. The terminal includes the receiving module and the first connection module, and establishes a connection with the base station using the received target band, the base station includes the sending module and the second connection module, and schedules the terminal to the target band sent to the terminal. When the base station has a plurality of working bands and the load is unbalanced among different bands, the solution schedules the terminal to the band with more idle resources neatly, consequently utilizes the band resources of the system efficiently.

Description

Band access switching method, terminal and base station

This application claims priority to Chinese Patent Application No. 200810055875.6, entitled "Band Access Switching Method, Terminal and Base Station", filed on January 10, 2008, the entire contents of which are incorporated herein by reference. In the application. Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a frequency band access switching method, a terminal, and a base station. Background technique

The forward control channel (hereinafter referred to as the control channel) is used to transmit messages such as access grants, resource assignments, ACK responses, and power control, and is transmitted in every frame. In the Ultra Mobile Broadband (hereinafter referred to as UMB) system, the control channel includes a Forward Shared Control Channel (hereinafter referred to as F-SCCH) for transmitting information such as resource assignment and access grant, and other channels. The number of resources and location information occupied by the control channel are transmitted in a forward secondary broadcast control channel (hereinafter referred to as F-SBCCH). This information is transmitted once every 2 superframes (50 frames) in the F-SBCCH, during which the resources allocated to the control channel remain unchanged. Since the number of resources occupied by other subchannels in the control channel is substantially unchanged, the number of resources of the control channel is related to the maximum number of information carried by the F-SCCH.

The F-SCCH channel is formed by connecting a plurality of control blocks (hereinafter referred to as: block), each block uses the same code modulation mode, and passes through the terminal identifier of the target terminal (hereinafter referred to as MACID), and the entire control channel Symbols are interleaved and transmitted. The F-SCCH channel contains multiple blocks, and the lengths of these blocks are small. In order to simplify the system, all blocks are expanded to a uniform length by zero-padding and connected into a block sequence; if the number of blocks sent is smaller than the system gives The fixed value is obtained by adding zeros after the block sequence to reach the required length. The channel includes signaling that may occur every physical frame (time slot) such as pre-reverse resource assignment signaling, reverse access acknowledgement signaling, and broadcast/multicast signaling. In the existing UMB system, the base station only has a narrow frequency band resource, so all the accessed terminals are in a unique frequency band, and the frequency domain resources of the frequency band are used for related services. However, in view of the future development trend, the base station will have a wider frequency band resource, so it may be divided into multiple frequency bands to work; for example, the system has a bandwidth of 100M, and if each frequency band is set to 20M, the entire bandwidth can be divided into Five frequency bands work, each of which is independent of each other and has its own control channel area and data area. However, due to the randomness of terminal access and the randomness of the data volume of each terminal, the load of different frequency bands will be greatly different. If the access of the terminal cannot be scheduled between the frequency bands, system resources will be caused. Serious waste. Summary of the invention

The embodiments of the present invention provide a frequency band access handover method, a terminal, and a base station, which are used to flexibly schedule a terminal to a frequency band in which resources are relatively idle, thereby effectively utilizing frequency band resources of the system.

An embodiment of the present invention provides a method for switching a frequency band access, including:

Receiving a band switching indication message, where the band switching indication message carries identification information of a target frequency band;

Establishing a connection by using a target frequency band corresponding to the identification information in the frequency band switching indication message. An embodiment of the present invention provides a terminal, including:

a receiving module, configured to receive a frequency band switching indication message, where the frequency band switching indication message carries identification information of a target frequency band;

The first connection module is configured to establish a connection with the base station by using a target frequency band corresponding to the identifier information in the frequency band switching indication message.

The embodiment of the invention provides a base station, including:

a sending module, configured to send a frequency band switching indication message, where the frequency band switching indication message carries identification information of a target frequency band;

The second connection module is configured to establish a connection with the terminal by using a target frequency band corresponding to the identifier information in the frequency band switching indication message. The frequency band access switching method, the terminal, and the base station provided by the embodiment of the present invention, when the base station has multiple working frequency bands, and the load is unbalanced between the frequency bands, the terminal is flexibly scheduled to the relatively idle frequency band, thereby effectively utilizing the system. Band resources. DRAWINGS

1 is a flowchart of Embodiment 1 of a method for switching a frequency band access according to the present invention;

2 is a flowchart of Embodiment 2 of a method for switching a frequency band access according to the present invention;

3 is a flowchart of Embodiment 3 of a method for switching a frequency band access according to the present invention;

4 is a flowchart of Embodiment 4 of a method for switching a frequency band access according to the present invention;

5 is a flowchart of Embodiment 5 of a method for switching a frequency band access according to the present invention;

6 is a flowchart of Embodiment 1 of another frequency band access handover method according to the present invention;

FIG. 7 is a flowchart of Embodiment 2 of another frequency band access handover method according to the present invention; FIG.

FIG. 8 is a flowchart of Embodiment 3 of another method for switching access of a frequency band according to the present invention; FIG.

FIG. 9 is a flowchart of Embodiment 4 of another frequency band access handover method according to the present invention; FIG.

10 is a flowchart of Embodiment 5 of another frequency band access handover method according to the present invention;

FIG. 1 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

12 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description

The technical solutions of the embodiments of the present invention are further described below with reference to the accompanying drawings and specific embodiments.

Band access switching method embodiment

When the base station has a wide frequency band resource, the entire bandwidth resource will be divided into multiple frequency bands for operation; the terminal accessing the base station is connected to each frequency band for service processing, when in a certain frequency band When the number of terminals to be accessed is large, when the load of the frequency band is large, some terminals are scheduled from the frequency band to other idle frequency bands, and the service processing is continued in other frequency bands. The terminal receives the band switching indication message, where the band switching indication message carries the identification information of the target frequency band; The terminal establishes a connection with the base station by using the target frequency band corresponding to the identification information in the frequency band switching indication message, that is, after receiving the frequency band switching indication message, the terminal obtains the identification information of the target frequency band to be accessed by the terminal from the message, that is, the terminal learns Which idle frequency band is to be scheduled to go; then the connection is re-established with the base station through the target frequency band to complete the terminal scheduling from the busy frequency band to the idle frequency band.

FIG. 1 is a flowchart of Embodiment 1 of a method for switching a frequency band access according to the present invention. As shown in FIG. 1, the method includes the following steps:

Step 100: The terminal receives, by using a cell broadcast channel, a band handover indication message that carries the band status indication domain information.

The cell broadcast channel includes a forward primary broadcast control channel, a forward secondary broadcast control channel, and a quick paging channel, and the base station sends a frequency band handover indication message by using one of the channels, where the frequency band status indication domain information is used to identify each The busy state of the frequency band. The terminal will receive the band switching indication message by, for example, F-SBCCH while performing a search and acquisition of the network.

Step 101: The terminal accesses the base station through the idle frequency band.

After receiving the band switching indication message, the terminal obtains the band status indication domain information included in the base station, and obtains the idle frequency band identification information in the base station according to the information, for example, if the terminal parses the band status indication field information into a bit bitmap. And according to the predetermined data format, where "0" represents idle, the frequency band information corresponding to "0" in the bit bitmap is found, and the terminal can directly select the target frequency band to be accessed when entering the network.

In this embodiment, the terminal has not been connected to the base station, and the base station adjusts the terminal to be accessed to the corresponding idle frequency band according to the actual workload condition.

2 is a flowchart of Embodiment 2 of a method for switching a frequency band access according to the present invention. As shown in FIG. 2, the method includes the following steps:

Step 200: The terminal receives, by using a forward shared control channel, a band switching indication message that includes access confirmation control block information.

Before accessing the base station, the terminal first sends an access probe to the base station, and then receives the response from the base station, and receives the access confirmation control block sent by the base station through the F-SCCH (Access). The Grant information carries the band index domain information for identifying the frequency band to be accessed by the terminal; the terminal parses the band index domain information in the access confirmation block in the F-SCCH, and learns the frequency band information to be accessed.

Step 201: The terminal accesses the base station through the idle frequency band.

After the terminal knows the idle frequency band information identified by the frequency band index domain information sent by the base station through the F-SCCH, the terminal can directly select the target frequency band to be accessed when entering the network.

In this embodiment, the terminal has not been connected to the base station, and the base station schedules the terminal to be accessed into the corresponding idle frequency band according to the actual workload of the frequency band.

FIG. 3 is a flowchart of Embodiment 3 of a method for switching a frequency band access according to the present invention. As shown in FIG. 3, the method includes the following steps:

Step 300: The terminal receives, by using a forward shared control channel, a band switching indication message that includes forward channel resource assignment control block information.

The terminal receives the forward channel resource assignment (hereinafter referred to as FLAB) control block information delivered by the base station through the F-SCCH, where the FLAB control block carries the frequency band index domain information for identifying the frequency band to be accessed by the terminal, and the terminal receives the information. After the control block information carrying the band index domain information is carried out, the control block is parsed to obtain the target frequency band information to be scheduled. In this embodiment, the terminal has accessed the base station through the original frequency band. Because the frequency band is heavy, the base station will schedule the terminals in the busy frequency band to the relatively idle frequency band, and further, if the base station operates in each working frequency band. When the MACID of the terminal is multiplexed, after the terminal is scheduled to the target frequency band, the original FLAB control block that continues to be used includes the MACID used for identifying the target frequency band, in addition to the band index domain information. Terminal identification domain information. After receiving the control block information, the terminal not only knows the target frequency band information to be accessed, but also knows the MACID information to be used in the target frequency band. If the MACID of the terminal in the working frequency band of the base station is not multiplexed, that is, the MAC ID used by the terminal in any frequency band of the access base station is unique, and does not conflict with the MACID used by other terminals, in this case Next, the base station does not need to re-assign a new MACID to the terminal, and finally The original MACID can still be used after the terminal accesses the target frequency band.

Step 301: The terminal accesses the base station through the idle frequency band.

After receiving the band switching indication message, the terminal obtains the band index domain information included in the FLAB control block, and learns the target band information; the terminal selects the target frequency band to access the base station; if the FLAB control block received by the terminal further includes the terminal When the new MACID is assigned, the terminal will replace the original MACID with the new MACID, that is, use the new MACID to perform related services in the target frequency band.

In this embodiment, after the terminal has established a connection with the base station in a forward frequency band, the base station schedules it to other corresponding idle frequency bands according to the actual workload of the frequency band in which the terminal is located.

If the scheduled terminal has established a connection with the base station in a reverse frequency band, similarly to the above embodiment, the terminal also receives the frequency band index field carried by the base station and transmitted by the F-SCCH for identifying the frequency band to be accessed by the terminal. The control block of the information is different from the above embodiment in that the terminal parses the index information of the target frequency band in the reverse channel resource assignment control block, and in the above embodiment, the terminal parses the target in the FLAB control block. Further, the terminal may further include, in the received reverse channel resource assignment control block information, terminal identification domain information for identifying a terminal identifier used in the target frequency band, and other processes are substantially the same.

FIG. 4 is a flowchart of Embodiment 4 of a method for switching a frequency band access according to the present invention. As shown in FIG. 4, the method includes the following steps:

Step 400: The terminal receives, by using a forward shared control channel, the frequency band handover indication message that includes scheduling block information.

The terminal receives scheduling block information through the F-SCCH, where the scheduling block is based on a control block originally transmitted by the base station in the F-SCCH, and an additional control block for scheduling the terminal to the idle frequency band is added. The scheduling block includes type domain information for identifying the scheduling block and band index domain information for identifying a frequency band to be accessed by the terminal. After receiving the scheduling block, the terminal parses the information in the scheduling block, first determines the type of the block according to the type field information, and knows that the control block used for scheduling the terminal, and then obtains the target according to the frequency band index domain information. Band information.

Further, if the MACID of the terminal in each working frequency band of the base station is multiplexed, the terminal The terminal identification domain information sent by the base station for identifying the MACID used in the target frequency band is also received in the scheduling block. After receiving the scheduling block information, the terminal not only knows the target frequency band information to be accessed, but also knows the MACID information to be used in the target frequency band. If the MACID of the terminal in the working frequency band of the base station is not multiplexed, that is, the MAC ID used by the terminal in any frequency band of the access base station is unique, and does not conflict with the MACID used by other terminals, in this case The base station does not need to re-assign a new MACID to the terminal, and the original MACID can still be used after the terminal accesses the target frequency band.

Step 401: The terminal accesses the base station through the idle frequency band.

After the scheduled terminal learns from the scheduling block that it is scheduled to be in the target frequency band of the band index domain information identifier, the terminal selects the target frequency band to access the base station; the terminal uses the originally used MACID to descramble the scheduling block information, if the terminal receives the When the scheduling block also includes a new MACID assigned to the terminal, the terminal will replace the original MACID with the new MACID, that is, use the new MACID to perform related services in the target frequency band.

If the terminal receives the scheduling block through the F-SCCH and finds that the scheduling block information is scrambled by the currently used MACID, it indicates that the terminal is to be separately scheduled. If the terminal receives the scheduling block through the F-SCCH and finds that the scheduling block information is scrambled by the broadcast MACID, it indicates that the scheduling is to simultaneously schedule multiple terminals from the busy frequency band into the idle frequency band. After receiving the scheduling block, the terminal first determines whether it meets the scheduling condition. The specific judgment rule is whether the last n bits of the MACID currently used by the terminal are the same as the last n bits of the broadcast MACID, and if they are the same, the scheduling condition is met; if not, the same is true; The scheduling condition is not met, where n is determined by the base station according to the actual load condition of the current frequency band and notified to the terminal by the scheduling block. When the terminal knows that it is to be scheduled, it further obtains the target identification band in the target frequency band according to the terminal identification domain information of the terminal identifier used by the first terminal in the target frequency band for identifying the first terminal that meets the scheduling condition in the scheduling block. The MACID used, the specific process is as follows: When the MACID currently used by a terminal is "010111" and the broadcast MACID is "111111", the terminal meets the scheduling condition according to the judgment condition that the last 3 bits are the same, and is scheduled. One of a plurality of terminals; then, the terminal judges itself according to the first three digits of the MACID The location of a group of terminals, there are "000" and "001" before "010", indicating that the terminal is in the third position in the scheduled terminal group; because the "MACID" obtained in the scheduling block is the scheduling The terminal identifier used by the first terminal in the terminal group in the target frequency band, then the terminal that originally used "010111" will add "2" from the "MACID" obtained in the scheduling block, that is, obtain the terminal identifier used by itself in the target frequency band.

The terminal may also receive, from the scheduling block, a time-frequency resource that is sent by the base station and used in the target frequency band, and the resource allocation information format in the scheduling block is the same as the existing data format. In this embodiment, the terminal re-accesses to the target frequency band according to the scheduling block information sent by the base station on the premise that the forward or reverse frequency band is connected to the base station; the scheduling information can be learned from the scrambling information of the scheduling block. Whether it is a single terminal scheduling or a plurality of terminals scheduling together, and obtaining the MAC IDs used by the terminals in the target frequency band by judgment.

FIG. 5 is a flowchart of Embodiment 5 of a method for switching a frequency band access according to the present invention. As shown in FIG. 5, the method includes the following steps:

Step 500: The terminal receives a scheduling instruction by using a scheduling channel of the control channel area.

The terminal receives the scheduling instruction information of the base station in the newly added scheduling channel of the base station in the control channel area, where the scheduling instruction includes the frequency band index domain information that identifies the frequency band to be accessed by the terminal; and the terminal further uses the frequency band index domain included in the scheduling instruction. The information knows the target frequency band information to be scheduled.

Step 501: The terminal accesses the base station through the idle frequency band.

After the terminal knows the target frequency band information from the scheduling instruction information, the terminal establishes a connection with the base station through the frequency band.

When the MACID of the terminal in the base station is multiplexed, the MAC ID used in the target frequency band re-allocated by the base station is received in the scheduling instruction information; if the MACID of each terminal is not multiplexed, the terminal is at the target. The original MACID will also be used in the frequency band for related services.

In the embodiments of the above-mentioned frequency band access switching method, when the load of each working frequency band of the base station is unbalanced, some terminals in the busy frequency band are scheduled to be in a relatively idle frequency band, thereby effectively solving the defect that the frequency band load is unbalanced, and effectively utilizing System band resources. Another frequency band access switching method embodiment

The base station divides the entire bandwidth resource into multiple frequency bands for operation in the case of having a wide frequency band resource; the terminal accessing the base station is accessed to each frequency band for service processing, and is connected in a certain frequency band. When the number of incoming terminals is large, and the load on the frequency band is large, some terminals are scheduled from the frequency band to other idle frequency bands, and the service processing is continued in other frequency bands. The base station sends a band switching indication message, where the band switching indication message carries the identification information of the target frequency band, and establishes a connection with the terminal by using the target frequency band corresponding to the identification information in the frequency band switching indication message. The base station transmits a band switching indication message to the terminal through the transmission channel, and informs the scheduled terminal target frequency band information through the message, and then accesses the terminal to be scheduled into the target frequency band.

FIG. 6 is a flowchart of Embodiment 1 of another method for accessing a frequency band according to the present invention. As shown in FIG. 6, the method includes the following steps:

Step 600: The base station sends a band handover indication message carrying the band status indication domain information by using the cell broadcast channel.

The base station sends a frequency band switching indication message to the terminal by using a cell broadcast channel, such as a forward primary broadcast control channel, a forward secondary broadcast control channel, and a quick paging channel, where the frequency band status indication domain information is used to identify the busy state of each frequency band. , that is, for example, in the F-SBCCH, the field "busy idle indication" is added, and its length is n bits, where n is the number of working bands, and the busy state of each frequency band is identified by a bit bitmap form, for example, if the frequency band is busy, The corresponding bit is set to "1"; if the frequency band is idle, the corresponding bit is set to "0", and of course, it can be reversed, as long as the busy band and the free band are distinguished; the information is utilized in the "QuickChannelInfo" block. Reserved bit (Reserved) transmission.

Step 601: The base station establishes a connection with the terminal through the idle frequency band.

After receiving the band status indication domain information and obtaining the idle frequency band information, the terminal sends an access request to the base station through the idle frequency band resource, and the base station completes the access of the terminal through the idle frequency band.

In this embodiment, the terminal has not been connected to the base station, and the base station schedules the terminal to be accessed into the corresponding idle frequency band according to the actual workload condition. FIG. 7 is a flowchart of Embodiment 2 of another method for accessing a frequency band according to the present invention. As shown in FIG. 7, the method includes the following steps:

Step 700: The base station sends the frequency band switching indication message including the access confirmation control block information to the forward shared control channel.

After receiving the access probe of the terminal, the base station sends the "Access Grant" control block information to the terminal through the F-SCCH. If the frequency band to be accessed by the terminal when the terminal initiates the connection is too heavy, the base station controls the "Access Grant". Adding band index domain information for identifying the frequency band to be accessed by the terminal, that is, adding "frequency band indicating the terminal to listen" domain information, and notifying the terminal to wait for the resource assignment letter in the frequency band corresponding to the "frequency band indicating the terminal to listen to" Let RLAB, in this way, coordinate the load between different frequency bands. Table 1 shows the data structure of the "Access Grant" control block after adding the band index domain information.

Table 1

Step 701: The base station establishes a connection with the terminal by using a frequency band identified by the frequency band index.

After receiving the band index domain information and knowing the frequency band information to be connected to establish a connection with the base station, the terminal sends an access request to the base station through the idle frequency band resource, and the base station completes the terminal access by using the idle frequency band identified by the frequency band index.

FIG. 8 is a flowchart of Embodiment 3 of another method for switching access of a frequency band according to the present invention. As shown in FIG. 8, the method includes the following steps:

Step 800: The base station sends a band switching indication message including FLAB control block information by using a forward shared control channel. When the terminal establishes a connection in a forward frequency band, if the terminal needs to be scheduled to be in another frequency band, the base station sends an FLAB control block to the terminal through the F-SCCH, and the control block includes a terminal for identifying the terminal. The band index domain information of the frequency band to be accessed, that is, the terminal is notified to re-establish the connection in the indicated target frequency band; the base station can be in TD-FLAB, SZ-TD-FLAB, RRA-TD-FLAB, SCW- in, for example, F-SCCH. Add domain "band index" to one of the control blocks of FLAB, MCW-FLAB1, RRA-SCW-FLAB, RRA-MCW-FLAB1, SZ-SCW-FLAB or SZ-MCW-FLAB1; this domain information can be added to the control block The front end can also be added to the end of the control block. The specific location is not limited. As long as the data format of the control block is negotiated between the base station and the terminal; when the terminal receives the control block with the band index field added, After the data in the control block is parsed, the "band index" information is searched according to the predetermined format to the corresponding bit.

In the case that the MACIDs of the terminals in the working bands of the base station are multiplexed, in order to prevent the MACIDs used by the terminals in the same frequency band from colliding with each other, the base station sends the FLAB control block in addition to the band index domain information, and further includes The terminal identification domain information of the MACID used in the target frequency band. After receiving the control block information, the terminal not only knows the target frequency band information to be accessed, but also knows the MACID information to be used in the target frequency band. If the MACID of the terminal in the working frequency band of the base station is not multiplexed, that is, the MAC ID used by the terminal in any frequency band of the access base station is unique, and does not conflict with the MACID used by other terminals, in this case The base station does not need to re-assign a new MACID to the terminal, and the original MACID can still be used after the terminal accesses the target frequency band.

Step 801: The base station establishes a connection with the terminal by using a frequency band identified by the frequency band index.

After the base station dispatches the terminal to the target frequency band, if it allocates a new MACID, it uses the MACID to perform related services with the terminal; if the MACID is not re-allocated, the original MACID of the terminal is used to perform related services; In the FLAB control block information that is sent, the terminal is allocated time-frequency resources that can be used in the target frequency band, and after the terminal is scheduled to the target frequency band, the terminal uses the time-frequency resources allocated by the base station for use in the frequency band. business.

In this embodiment, after the terminal has established a connection with the base station in a forward frequency band, the base station according to the The actual workload of the frequency band in which the terminal is located is scheduled to be allocated to other corresponding idle frequency bands; and the base station determines whether to reassign the MACID to the scheduled terminal according to whether the terminal MACID is multiplexed.

When the terminal has established a connection with the base station in a reverse frequency band, similarly to the foregoing embodiment, the base station also sends a frequency band switching indication message through the F-SCCH, and the frequency band switching indication message also includes a terminal for identifying the terminal. The band index domain information of the frequency band to be accessed, but differs from the above embodiment in that the information is added in the reverse channel resource assignment control block, and in the above embodiment, the base station increases the band index domain information. In the FLAB control block; further, the base station may also send a new MACID to the scheduled terminal according to the multiplexing condition of the terminal identifier, and add the new MACID to the corresponding reverse channel resource assignment control block. The other processes are basically the same.

FIG. 9 is a flowchart of Embodiment 4 of another method for switching access of a frequency band according to the present invention. As shown in FIG. 9, the method includes the following steps:

Step 900: The base station sends a band switching indication message including scheduling block information by using the forward shared control channel.

The base station adds a scheduling block to the F-SCCH, and the scheduling block data format structure is as shown in Table 2. When the base station is to schedule a terminal, the scheduling block is scrambled with the MACID currently used by the scheduled terminal, so that only the terminal can receive the scheduling block information; when the terminal is already in a forward or reverse frequency band When the connection is established with the base station, but the frequency band is overloaded at this time, the base station can schedule the terminal to a relatively idle frequency band by scheduling the information of the block, and re-assign the terminal with a MAC ID for the target frequency band according to the requirement. The scheduling block information includes type domain information for identifying the scheduling block and band index domain information for identifying a frequency band to be accessed by the terminal. After receiving the scheduling block information, the terminal learns that the control block is used for scheduling the terminal according to the type domain information; the terminal may also obtain the target frequency band information in the scheduling block; if the MACID of the terminal in the base station is multiplexed, the terminal further The terminal identification domain information for identifying the terminal identification used in the target frequency band is received in the scheduling block to obtain the MAC ID used in the target frequency band.

Table 2 BlockName Header Fields Length Fields [#bits]

(bits)

The scheduling block adds "type""log ₂ (band number)] + band index ["^ band number),]

Indicates the type of control block NMACID + MACID [NMACID], using "log ₂ n \ scheduling criteria n ["l.g ₂ "]] existing block unused

one of

Header

When the base station is to schedule a group of terminals, the terminal identification domain information included in the dispatched scheduling block is used to identify the terminal identifier used by the first terminal in the target frequency band among the plurality of terminals that meet the scheduling condition, and the scheduling terminal group is used in the scheduling terminal group. The other terminal obtains the MAC ID used in the target frequency band by using the terminal identification domain information according to its location in the group. When the load of a frequency band is too heavy, the base station may schedule a group of terminals to a relatively idle frequency band by using the information of the scheduling block, and re-assign the terminal to the terminal for the MAC ID of each terminal in the target frequency band. The base station transmits the scheduling block to the terminal through the F-SCCH, so that each terminal can receive the scheduling block information, and the broadcast MACID is a constant. The base station formulates scheduling criteria. As shown in Table 2, if a group of terminals is scheduled, the format of the scheduling block is to increase the domain "scheduling criteria η", and the corresponding number of bits is increased by "log ₂ «], and the scheduling condition is currently used by the terminal. The terminal with the same n-bit of the MACID and the last n bits of the broadcast MACID is scheduled to the frequency band indicated by the scheduling block, where n is determined by the base station according to the load condition of the current frequency band.

Step 901: The base station establishes a connection with the terminal by using a frequency band identified by the frequency band index.

The base station may further add a time-frequency resource used by the scheduled terminal in the target frequency band in the scheduling block, and the resource allocation information format in the scheduling block is the same as the existing data format. In this embodiment, the terminal has established a connection between the forward or reverse frequency band and the base station, and the base station determines the number of terminals to be scheduled according to the load condition of the current frequency band, and applies different information to perform scrambling processing on the scheduling block, so that The corresponding terminal receives the scheduling block information to achieve load balancing of the frequency band.

FIG. 10 is a flowchart of Embodiment 5 of another method for switching a frequency band access according to the present invention. As shown in FIG. 10, the method includes the following steps: Step 1000: The base station sends a scheduling instruction by using a scheduling channel of the control channel area. The base station adds a scheduling channel to the control channel area, and sends a scheduling instruction to the terminal by using the scheduling channel to schedule one or a group of terminals to a frequency band in which the resource is relatively idle. . The channel transmission bit length is ""log ₂ (band number) 1 + NMACID", the transmission content is "band index" and "MACID", indicating the target frequency band to which the terminal is scheduled, and assigning the terminal the MACID used in the target frequency band. .

Step 1001: The base station establishes a connection with the terminal by using a frequency band identified by the frequency band index.

In summary, each frequency band access handover method embodiment controls the terminal by adding a domain "busy idle indication" to the cell broadcast channel, or adding a domain "indicating the frequency band to be listened to by the terminal" in the access response portion of the control channel region. At initial access, it is connected to a relatively small frequency band. Embodiments of the above-mentioned respective frequency band access handover methods may be established by adding a domain related to the "target frequency band of the terminal scheduling" in the control channel region, or adding a scheduling block in the control channel region, or adding a scheduling channel in the control channel region. One or a group of terminals is scheduled to a relatively small frequency band. The information added to the control channel area is shown in Table 4:

Table 4

When the "band index" is added as a domain to the existing control channel region, there is no need to additionally add "type" to indicate the type of the control block; when adding a new scheduling message to the existing control channel region, "type" is required. To indicate the type of the control block; when the MACID of each working band is multiplexed, a new MACID to be allocated to the terminal is used in the target frequency band when scheduling the terminal; when the target frequency band exists in the active set of the terminal, the target frequency band at this time If the terminal has been assigned a MACID, there is no need to add an additional "MACID"; when the MACID of each working band is not multiplexed, "MACID" is not required. The resource "domain" can also allocate resources to the terminal after the terminal is scheduled to the target frequency band. The "time-frequency resource" field is not needed at this time. The information content added in the control channel area has various combinations of mandatory and optional in the table. The above embodiments are based on the UMB system, but are not limited to the UMB system.

When the base station has multiple working frequency bands, the embodiment of the frequency band access switching method provided by the embodiment of the present invention flexibly schedules the terminal to the relatively idle frequency band when the load between the frequency bands is unbalanced, thereby effectively utilizing the frequency band resources of the system. .

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Terminal embodiment

11 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 11, the terminal includes a receiving module 11 and a first connecting module 12, where the receiving module 11 is configured to receive a frequency band switching indication message, where the frequency band switching indication message carries a target. The identification information of the frequency band; the first connection module 12 is configured to establish a connection with the base station by using a target frequency band corresponding to the identification information in the frequency band switching indication message.

Specifically, the receiving module 11 receives the frequency band switching indication message sent by the base station by using the channel between the base station and the terminal, and the terminal learns the target frequency band information to be accessed and other related information from the message, for example, the terminal is in the target frequency band. The MAC ID used and the information about the time-frequency resources that can be used in the target frequency band allocated by the base station; after receiving the handover indication message, the first connection module 12 establishes a connection with the base station through the received target frequency band.

Further, the receiving module u includes a first receiving submodule 111, a second receiving submodule 112, a third receiving submodule 113, a fourth receiving submodule 114, a fifth receiving submodule 115, and a sixth receiving submodule 116, wherein The first receiving sub-module 111 is configured to receive, by using a cell broadcast channel, the band switching indication message that carries the band status indication domain information, where the band status indication domain information is used to identify a busy state of each frequency band; 112 is used to connect through the forward shared control channel Receiving the band switching indication message including the access confirmation control block information, where the access confirmation control block information carries the band index domain information for identifying the frequency band to be accessed by the terminal; the third receiving submodule 113 is configured to pass The forward shared control channel receives the frequency band switching indication message including FLAB control block information, where the FLAB control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal; and the fourth receiving submodule 114 is configured to pass The forward shared control channel receives the frequency band switching indication message including reverse channel resource assignment control block information, where the reverse channel resource assignment control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal The fifth receiving sub-module 115 is configured to receive, by using a forward shared control channel, the frequency band switching indication message that includes scheduling block information, where the scheduling block information includes type domain information for identifying the scheduling block, and is used for identifying The frequency band index domain information of the frequency band to be accessed by the terminal; the sixth receiving submodule 116 is used to pass the control signal Receiving scheduling channel region scheduling instruction, said instruction scheduling for the terminal comprises identifying bands in the access domain information index. The terminal receives the band switching indication message sent by the base station through different channels and different manners through the receiving sub-module of different functions, so that the terminal switches between different frequency bands of the base station more flexibly and quickly.

Base station embodiment

FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 12, the base station includes a sending module 21 and a second connecting module 22, where the sending module 21 is configured to send a band switching indication message, and the frequency band switching indication The message carries the identification information of the target frequency band. The second connection module 22 is configured to establish a connection with the terminal by using the target frequency band corresponding to the identification information in the frequency band switching indication message.

Specifically, the sending module 21 in the base station sends a frequency band switching indication message to the terminal that is to access the base station and the terminal that has accessed the busy frequency band of the base station according to the actual working load of each frequency band of the base station, and instructs the terminal to switch to the base station. In other relatively idle frequency bands, the index information of the target frequency band to be accessed by the terminal is sent to the terminal through the frequency band switching indication message; after receiving the frequency band switching indication message, the terminal accesses the target frequency band according to requirements, the base station A connection is established with the terminal via the second connection module 22.

Further, the sending module 21 includes a first sending submodule 211 and a second sending submodule 212. The third sending sub-module 213, the fourth sending sub-module 214, the fifth sending sub-module 215, and the sixth sending sub-module 216, where the first sending sub-module 211 is configured to carry the The band status indication domain information indicates the band switching indication message, the band status indication field information is used to identify a busy state of each frequency band, and the second sending submodule 212 is configured to send the access through the forward shared control channel. And confirming the band switching indication message of the control block information, where the access confirmation control block information carries the band index domain information for identifying the frequency band to be accessed by the terminal; and the third sending submodule 213 is configured to use the forward sharing The control channel sends the FLB control block information to the band switching indication message, where the FLAB control block information carries the band index domain information for identifying the frequency band to be accessed by the terminal; the fourth sending submodule 214 is configured to pass the forward direction. And transmitting, by the shared control channel, the frequency band switching indication message that includes reverse channel resource assignment control block information, where the reverse channel resource assignment control block information is carried The frequency band index field information of the frequency band to be accessed by the terminal is used; the fifth sending sub-module 215 is configured to send the frequency band switching indication message including the scheduling block information by using the forward shared control channel, where the scheduling block information includes And identifying the type field information of the scheduling block and the band index domain information used to identify the frequency band to be accessed by the terminal; the sixth sending submodule 216 is configured to send a scheduling instruction by using a scheduling channel of the control channel area, where the scheduling The instructions include band index domain information identifying the frequency band to which the terminal is to access. The different sub-modules of the base station application sending module 21 are sent to the terminal to be switched by using different channels and different content modes, and the scheduling mode is diversified, and the method is more flexible and fast.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A frequency band access switching method, comprising:

Establishing a connection by using a target frequency band corresponding to the identification information in the frequency band switching indication message.

The method for switching a frequency band access according to claim 1, wherein the receiving the band switching indication message is: receiving, by the cell broadcast channel, the band switching indication message carrying the band status indication domain information, The band status indication domain information is used to identify the busy state of each frequency band.

The method for switching a frequency band access according to claim 1, wherein the receiving the frequency band switching indication message is: receiving, by using a forward shared control channel, the frequency band switching indication message including the access acknowledgement control block information, The access confirmation control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal.

The method for switching a frequency band access according to claim 1, wherein the receiving the frequency band switching indication message is specifically: receiving, by using a forward shared control channel, the frequency band switching including forward channel resource assignment control block information. The indication message, the forward channel resource assignment control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal.

The frequency band access handover method according to claim 4, characterized in that said forward channel resource assignment control block information further carries a terminal identification i or information for identifying a terminal identifier used in the target frequency band.

The method for switching a frequency band access according to claim 1, wherein the receiving the frequency band switching indication message is specifically: receiving, by using a forward shared control channel, the frequency band switching including reverse channel resource assignment control block information. The indication message, the reverse channel resource assignment control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal.

The frequency band access handover method according to claim 6, wherein the reverse channel resource assignment control block information further carries a terminal for identifying a terminal identifier used in a target frequency band. Identify domain information.

The method for switching a frequency band access according to claim 1, wherein the receiving the band switching indication message is specifically: receiving, by using a forward shared control channel, the band switching indication message including scheduling block information, the scheduling The block information includes type field information for identifying the scheduling block and band index domain information for identifying a frequency band to which the terminal is to access.

The frequency band access handover method according to claim 8, wherein the frequency band switching indication message including scheduling block information scrambled by the terminal identifier is received by the forward shared control channel, and the scheduling block information is further A terminal identification domain information for identifying a terminal identification used in a target frequency band is included.

The method for switching a frequency band access according to claim 8, wherein the frequency band switching indication message including scheduling block information scrambled by a broadcast terminal identifier is received by a forward shared control channel, where the scheduling block information is used. Also included is terminal identification domain information for identifying a terminal identifier used by the first terminal in the target frequency band among the plurality of terminals that meet the scheduling condition.

The method for switching a frequency band access according to claim 10, wherein after receiving the scheduling block information, determining whether the scheduling condition is met according to the broadcast terminal identifier, and if the scheduling condition is met, The terminal identifier used by the first terminal in the target frequency band among the plurality of terminals that meet the scheduling condition, and obtains the terminal identification information used in the target frequency band.

The method for accessing a frequency band access according to any one of claims 8 to 11, wherein the frequency band switching indication message including scheduling block information is received by the forward shared control channel, where the scheduling block information is Also included is time-frequency resource information that is usable in the target frequency band.

The method for switching a frequency band access according to claim 1, wherein the receiving the frequency band switching indication message is specifically: receiving, by using a scheduling channel of the control channel area, a scheduling instruction, where the scheduling instruction includes identifying, to be accessed by the terminal, Band index domain information for the band.

The band access handover method according to claim 13, wherein said scheduling instruction further comprises terminal identification domain information for identifying a terminal identity used in the target frequency band.

15. A terminal, comprising: a receiving module, configured to receive a frequency band switching indication message, where the frequency band switching indication message carries identification information of a target frequency band;

The terminal according to claim 15, wherein the receiving module comprises: a first receiving submodule, configured to receive, by using a cell broadcast channel, the band switching indication message carrying band status indication domain information, The band status indication domain information is used to identify a busy state of each frequency band;

a second receiving submodule, configured to receive, by using a forward shared control channel, the band switching indication message that includes access confirmation control block information, where the access confirmation control block information carries a frequency band for identifying a terminal to be accessed by the terminal Band index domain information;

a third receiving submodule, configured to receive, by using a forward shared control channel, the frequency band switching indication message that includes forward channel resource assignment control block information, where the forward channel resource assignment control block information carries information used to identify the terminal Band index domain information of the accessed frequency band;

a fourth receiving submodule, configured to receive, by using a forward shared control channel, the frequency band switching indication message that includes reverse channel resource assignment control block information, where the reverse channel resource assignment control block information carries information used to identify the terminal Band index domain information of the accessed frequency band;

a fifth receiving submodule, configured to receive, by using a forward shared control channel, the band switching indication message that includes the scheduling block information, where the scheduling block information includes type domain information used to identify the scheduling block, and is used to identify the terminal. Band index domain information of the frequency band to be accessed;

And a sixth receiving submodule, configured to receive a scheduling instruction by using a scheduling channel of the control channel area, where the scheduling instruction includes frequency band index domain information that identifies a frequency band to be accessed by the terminal.

17. A base station, comprising:

a second connection module, configured to pass, by using the identifier information in the frequency band switching indication message The standard frequency band, establishes a connection with the terminal.

The base station according to claim 17, wherein the sending module includes: a first sending submodule, configured to send, by using a cell broadcast channel, the band switching indication message carrying band status indication domain information The frequency band status indication field information is used to identify a busy state of each frequency band; the second sending submodule is configured to send the frequency band switching indication message including the access acknowledgement control block information by using the forward shared control channel, The access confirmation control block information carries frequency band index domain information for identifying a frequency band to be accessed by the terminal;

a third sending submodule, configured to send, by using a forward shared control channel, the frequency band switching indication message of the forward channel resource assignment control block information, where the forward channel resource assignment control block information carries a terminal for identifying the terminal The frequency band index domain of the frequency band to be accessed, 3⁄4;

a fourth sending submodule, configured to send, by using a forward shared control channel, the frequency band switching indication message that includes reverse channel resource assignment control block information, where the reverse channel resource assignment control block information is carried by the identifier Band index domain information of a frequency band to be accessed by the terminal;

a fifth sending submodule, configured to send, by using a forward shared control channel, the frequency band switching indication message that includes scheduling block information, where the scheduling block information includes type domain information used to identify the scheduling block, and is used for Identifying frequency band index domain information of a frequency band to be accessed by the terminal;

And a sixth sending sub-module, configured to send a scheduling instruction by using a scheduling channel of the control channel area, where the scheduling instruction includes frequency band index domain information that identifies a frequency band to be accessed by the terminal.