WO2016101556A1

WO2016101556A1 - Frequency band modification method and device, terminal and base station

Info

Publication number: WO2016101556A1
Application number: PCT/CN2015/081468
Authority: WO
Inventors: 黄河; 陈中明
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-23
Filing date: 2015-06-15
Publication date: 2016-06-30
Also published as: CN105790907A

Abstract

Provided are a frequency band modification method and device, a terminal and a base station. The method comprises: a terminal receives a reconfiguration message transmitted by a base station during a radio resource control (RRC) reconfiguration operation, wherein the reconfiguration message comprises: a system message block containing an affiliated frequency band of a modified cell where the terminal resides and an information element configured to instruct that the system message block comes into effect immediately, and/or an information element configured to inform the affiliated frequency band of the cell where the terminal resides; and the terminal modifies the affiliated frequency band of the cell where the terminal resides according to the received reconfiguration message. By means of the present invention, the problem that carrier aggregation of multi-frequency band cell cannot be realized in a relevant art is solved, thus achieving the effect of carrier aggregation of the multi-frequency band cell.

Description

Band modification method, device, terminal and base station

Technical field

The present invention relates to the field of communications, and in particular to a frequency band modification method, apparatus, terminal, and base station.

Background technique

In the Long Term Evolution (LTE) system, the central working carrier frequency of the cell is identified by the E-UTRA Absolute Radio Frequency Channel Number (EARFCN), and the EARFCN of the cell contains information about the working physical frequency and the working frequency band of the cell. The following uses EARFCN (working physical frequency, working frequency band) to identify the working carrier frequency of the cell. The current cell supports only one frequency band, but because the operator introduces a new frequency band, it overlaps with the existing frequency band on the physical frequency, thereby eliciting a new scenario, that is, the cell supports multiple frequency bands, as shown in FIG. It is a schematic structural diagram of a multi-band cell in the related art. For forward compatibility, for a multi-band cell, the base station notifies the terminal through the original cell, and the newly added frequency band notifies the terminal through the new cell, so that the original terminal does not introduce a new frequency band. Affected, new multi-band-capable terminals can recognize new cells and thus support multi-band cells. For the frequency band information of the cell (including the original cell and the newly added cell), the base station notifies the terminal through the system message block 1 in the system message, and the system message can be notified to the terminal through the broadcast channel, or through the dedicated message. For example, the radio resource control (Radio Resource Control, RRC for short) message is notified to the terminal, and when the terminal receives the changed system message in the connected state, the update of the band information is ignored.

In order to provide mobile users with higher data rates, the Long Term Evolution Advance (LTE-A) proposes Carrier Aggregation (CA), which aims to provide more UEs with corresponding capabilities. Large broadband, increasing the peak rate of the UE. In LTE, the maximum downlink transmission bandwidth supported by the system is 20 MHz. Carrier aggregation is to aggregate two or more component carriers (CC) to support a transmission bandwidth greater than 20 MHz and a maximum of 100 MHz. An LTE-A UE with carrier aggregation capability can transmit and receive data on multiple component carriers simultaneously. The component carriers that perform carrier aggregation belong to the same frequency band, which is called the same-band carrier aggregation, and the different frequency bands are called hetero-band carrier aggregation. In the LTE-A system, after the terminal enters the connected state, it can communicate with the source base station through multiple component carriers (such as CC1 and CC2) at the same time. The base station specifies a primary component carrier (Primary) by explicit configuration or according to the protocol. The component carrier (referred to as PCC), the other component carrier is called the secondary component carrier (SCC), and the serving cell on the downlink primary component carrier (DL PCC) is called the master. Primary Cell (Pcell), Downlink Secondary Component Carrier (DL) The serving cell on the SCC is called a secondary cell (Scell). However, in the related art, there is no disclosed technology for how to perform carrier aggregation for a multi-band cell.

For the problem of carrier aggregation that cannot implement multi-band cells in the related art, an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the invention provides a frequency band modification method, device, terminal and base station, so as to at least solve the problem that the carrier aggregation of the multi-band cell cannot be realized in the related art.

According to an embodiment of the present invention, a frequency band modification method is provided, including: receiving, by a terminal, a reconfiguration message sent by a base station in a radio resource control RRC reconfiguration operation, where the reconfiguration message includes: including a modified location a system message block of a home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal of the home frequency band of the camped cell; the terminal Modifying a home frequency band of the terminal camped cell according to the received reconfiguration message.

The handover message is not included in the reconfiguration message.

Before the terminal receives the reconfiguration message, the terminal further includes: the terminal receiving, by the base station, request information that is set to request the terminal to report the capability information of the terminal; and the terminal reports the request information to the terminal according to the request information. Capability information.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately valid, the terminal according to the received reconfiguration The message modifying the home frequency band of the terminal camping cell includes: the terminal immediately validating the system message block according to the received cell in the received reconfiguration message, and modifying a home frequency band of the terminal camped cell.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camping cell and a cell set to indicate that the system message block is immediately effective, the capability information of the terminal includes at least the The terminal supports capability information that the frequency band information in the system message block takes effect immediately.

When the reconfiguration message includes a cell set to notify the terminal to camp on a home frequency band of the cell, the capability information of the terminal includes at least setting to identify that the terminal supports a reconfiguration process to modify the terminal camped cell. Information on the capabilities of the home frequency band.

According to another embodiment of the present invention, a frequency band modification method is provided, including: a base station transmitting, in a radio resource control RRC reconfiguration operation, a reconfiguration corresponding to setting a home frequency band of the terminal camped cell to a terminal And the reconfiguration message includes: a system message block including a modified home frequency band of the terminal camping cell; and a cell set to indicate that the system message block is effective immediately; and/or, set to notify The terminal camps on a cell of a home frequency band of the cell.

The handover message is not included in the reconfiguration message.

Before the base station sends, to the terminal, a reconfiguration message, which is set to modify the home frequency band of the terminal camping cell, in the radio resource control RRC reconfiguration operation, the method further includes: sending, by the base station, the request to the terminal as a requesting location The request message that the terminal reports the capability information of the terminal; the base station receives the capability information of the terminal reported by the terminal.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camping cell and a cell set to indicate that the system message block is immediately effective, the capability information reported by the terminal is At least the capability information that the terminal supports the band information in the system message block to take effect immediately is included.

When the reconfiguration message includes a cell that is set to notify the terminal of the home frequency band of the camping cell, the capability information reported by the terminal includes at least setting the terminal to support the reconfiguration process to modify the terminal station. Information on the ability of the home frequency band of the cell to stay.

According to another embodiment of the present invention, a frequency band modifying apparatus is provided. The frequency band modifying apparatus is applied to a terminal side, and includes: a first receiving module configured to receive a weight sent by a base station in a radio resource control RRC reconfiguration operation. a message, wherein the reconfiguration message includes: a system message block including a modified home frequency band of the terminal camped cell; and a cell set to indicate that the system message block is immediately valid; and/or, set to And the modifying module is configured to modify the home frequency band of the terminal camped cell according to the received reconfiguration message.

The handover message is not included in the reconfiguration message.

The frequency band modifying apparatus further includes: a second receiving module, configured to receive, by the base station, request information that is set to request capability information of the terminal to report the terminal; and the reporting module is configured to report the capability of the terminal according to the request information information.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camping cell and a cell set to indicate that the system message block is effective immediately, the modifying module includes: an effective unit, setting The home frequency band of the terminal camped cell is modified according to the system message block that is valid immediately according to the received cell included in the received reconfiguration message.

According to another embodiment of the present invention, there is provided a terminal comprising the frequency band modifying device of any of the above.

According to another embodiment of the present invention, there is provided a frequency band modifying apparatus, the frequency band modifying apparatus being applied to a base station side, comprising: a first transmitting module configured to send, to a terminal, a setting to be in a radio resource control RRC reconfiguration operation Modifying a reconfiguration message of the home frequency band of the terminal camping cell, where the reconfiguration message includes: a system message block including the modified home frequency band of the terminal camped cell, and setting to indicate the system message block a cell that is in effect immediately; and/or a cell that is set to notify the terminal to camp on the home frequency band of the cell.

The handover message is not included in the reconfiguration message.

The frequency band modifying apparatus further includes: a second sending module, configured to send, to the terminal, a request message that is configured to request capability information of the terminal to report the terminal; and the third receiving module is configured to receive the Terminal capability information.

According to another embodiment of the present invention, there is provided a base station comprising the frequency band modifying apparatus of any of the above.

According to the embodiment of the present invention, the terminal receives the reconfiguration message sent by the base station in the radio resource control RRC reconfiguration operation, where the reconfiguration message includes: a system message including the modified home frequency band of the terminal camped cell. a block and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal to camp on a home frequency band of the cell; the terminal modifying the message according to the received reconfiguration message Terminal resident The home frequency band of the cell solves the problem that the carrier aggregation of the multi-band cell cannot be realized in the related art, and the effect of implementing carrier aggregation of the multi-band cell is achieved.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic structural diagram of a multi-band cell in the related art;

2 is a flow chart of a first method of modifying a frequency band according to an embodiment of the present invention;

3 is a flow chart of a second method of modifying a frequency band according to an embodiment of the present invention;

4 is a structural block diagram of a first type of band modification apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram showing a preferred structure of a first band modification apparatus according to an embodiment of the present invention; FIG.

6 is a structural block diagram of a modification module 44 in a first type of band modification apparatus according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present invention; FIG.

FIG. 8 is a structural block diagram of a second band modification apparatus according to an embodiment of the present invention; FIG.

9 is a block diagram showing a preferred structure of a second band modification apparatus according to an embodiment of the present invention;

FIG. 10 is a structural block diagram of a base station according to an embodiment of the present invention; FIG.

11 is a schematic diagram of a scenario according to an embodiment of the present invention;

FIG. 12 is a flowchart of a first carrier aggregation according to an embodiment of the present invention; FIG.

FIG. 13 is a flowchart of a second carrier aggregation according to an embodiment of the present invention; FIG.

FIG. 14 is a flowchart of a third carrier aggregation according to an embodiment of the present invention; FIG.

FIG. 15 is a flowchart of a fourth carrier aggregation according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a frequency band modification method is provided. FIG. 2 is a flowchart of a first frequency band modification method according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps:

Step S202: The terminal receives a reconfiguration message sent by the base station in a radio resource control RRC reconfiguration operation, where the reconfiguration message includes: a system message block including a modified home frequency band of the terminal camped cell, and is set to indicate the system a cell that is immediately valid for the message block; and/or a cell that is set to notify the terminal of the home frequency band of the camped cell;

Step S204: The terminal modifies the home frequency band of the terminal camped cell according to the received reconfiguration message.

Through the above steps, when the terminal needs to perform carrier aggregation of the multi-band cell, the system message block including the modified home frequency band of the terminal camped cell is sent by the base station to the terminal, and the cell is set to indicate that the system message block takes effect immediately. Or transmitting, to the base station, a cell set to notify the terminal of the home frequency band of the camped cell, so that the terminal implements the modification of the frequency band without affecting the normal service of the other terminal, thereby implementing carrier aggregation of the multi-band cell. The problem that the carrier aggregation of the multi-band cell cannot be realized in the related art is solved, and the effect of implementing carrier aggregation of the multi-band cell is achieved.

The reconfiguration message may not include the handover cell, so that the modification of the home frequency band of the terminal camped cell is completed by the terminal without interrupting the service.

Before the terminal receives the reconfiguration message sent by the base station, the terminal may report the capability information of the terminal. In an optional embodiment, before the terminal receives the reconfiguration message sent by the base station, the terminal further includes: the terminal receiving the setting sent by the base station The request information for requesting the terminal to report the capability information of the terminal; the terminal reports the capability information of the terminal according to the request information. The capability information reported by the terminal may include at least one of the following: the terminal supports the multi-band, and the carrier aggregation that supports the carrier aggregation into the predetermined frequency band, and may include the capability of supporting the frequency band information in the system message to take effect immediately, and may also include supporting the re-matching process. The ability to modify the band information used by the cell.

When the reconfiguration message includes a cell that is set to indicate that the system message block takes effect immediately, the terminal can immediately validate the system message block according to the cell. In an optional embodiment, when the reconfiguration message includes the modified When the system message block of the home frequency band of the terminal camping cell and the cell that is set to indicate that the system message block is effective immediately, the terminal modifies the home frequency band of the terminal resident cell according to the received reconfiguration message, including: the terminal re-match according to the received The cell contained in the message immediately validates the system message block to modify the home frequency band of the terminal camped cell.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is effective immediately, the capability information of the terminal includes at least a frequency band in the terminal support system message block. The ability information for the information to take effect immediately.

When the reconfiguration message includes a cell set to notify the terminal of the home frequency band of the camped cell, the capability information of the terminal includes at least information set to identify the capability of the terminal to support the reconfiguration process to modify the home frequency band of the terminal camped cell.

Another frequency band modification method is provided in this embodiment. FIG. 3 is a flowchart of a second frequency band modification method according to an embodiment of the present invention. As shown in FIG. 3, the flow includes the following steps:

Step S302: The base station sends, to the terminal, a reconfiguration message, which is set to modify the home frequency band of the terminal camping cell, in the radio resource control RRC reconfiguration operation, where the reconfiguration message includes: the home frequency band including the modified terminal resident cell System message block and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal of the home frequency band of the camped cell.

Through the above steps, when the terminal needs to perform carrier aggregation of the multi-band cell, the base station sends a system message block including the modified home frequency band of the terminal resident cell to the terminal, and is set to indicate that the system message block takes effect immediately, or The cell set to notify the terminal of the home frequency band of the camped cell is sent to the base station, so that the modification of the frequency band is implemented without affecting the normal service of other terminals, thereby implementing carrier aggregation of the multi-band cell in the terminal. The problem that the carrier aggregation of the multi-band cell cannot be realized in the related art is solved, and the effect of implementing carrier aggregation of the multi-band cell is achieved.

Before the base station sends the reconfiguration message to modify the home frequency band of the terminal camping cell in the radio resource control RRC reconfiguration operation, the base station further includes: the base station sending, to the terminal, a request message that is configured to request the terminal to report the capability information of the terminal; The base station receives capability information of the terminal reported by the terminal. After receiving the capability information reported by the terminal, the base station may determine the carrier aggregation characteristic of the terminal, for example, whether the bandwidth aggregation supported by the terminal is the same-band carrier aggregation or the inter-band carrier aggregation, and then the corresponding cell frequency band may be performed according to the carrier aggregation characteristics of the terminal. modify.

The capability information reported by the terminal may include at least one of the following: the terminal supports the multi-band, and the carrier aggregation that supports the carrier aggregation into the predetermined frequency band, and may include the capability of supporting the frequency band information in the system message to take effect immediately, and may also include supporting the re-matching process. The ability to modify the band information used by the cell. Wherein, the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and is set to indicate that the system message block is immediately generated When the effective cell is used, the capability information reported by the terminal includes at least the capability information of the frequency band information in the message block of the terminal support system.

When the reconfiguration message includes a cell set to notify the terminal of the home frequency band of the camped cell, the capability information may include information set to identify the terminal's ability to support the reconfiguration procedure to modify the home frequency band of the terminal camped cell.

In the embodiment, a frequency band modification device is further provided, which is configured to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a structural block diagram of a first type of band modification apparatus according to an embodiment of the present invention. The band modification apparatus is applied to a terminal side. As shown in FIG. 4, the apparatus includes a first receiving module 42 and a modification module 44. The device is described.

The first receiving module 42 is configured to receive a reconfiguration message sent by the base station in a radio resource control RRC reconfiguration operation, where the reconfiguration message includes: a system message block and a setting including a modified home frequency band of the terminal camped cell a cell for instructing the system message block to take effect immediately; and/or a cell set to notify the terminal of the home frequency band of the camped cell; a modification module 44 coupled to the first receiving module 42 described above, configured to receive the reconfiguration message according to the received message Modify the home frequency band of the terminal camped cell.

The switching message is not included in the reconfiguration message.

FIG. 5 is a block diagram showing a preferred structure of a first type of band modification apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a second receiving module 52 and a reporting module 54 in addition to all the modules shown in FIG. The device will be described below.

The second receiving module 52 is configured to receive the request information that is sent by the base station and is configured to request the terminal to report the capability information of the terminal. The reporting module 54 is connected to the second receiving module 52 and the first receiving module 42 and configured to be configured according to the request information. Report the capability information of the terminal.

6 is a structural block diagram of a modification module 44 in a first type of band modification apparatus according to an embodiment of the present invention. As shown in FIG. 6, when the reconfiguration message includes a system message block including a modified home frequency band of a terminal camped cell. When the cell is set to indicate that the system message block is in effect, the modification module 44 includes an validation unit 62, which is described below.

The validating unit 62 is configured to modify the home frequency band of the terminal camped cell according to the immediately-effective system message block of the cell included in the received reconfiguration message.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is effective immediately, the capability information of the terminal includes at least the frequency band information in the message block of the terminal support system. Capability information that is effective immediately.

FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal 72 includes the first type of band modification means 74 of any of the above.

FIG. 8 is a structural block diagram of a second type of band modification apparatus according to an embodiment of the present invention. The apparatus is applied to a base station side. As shown in FIG. 8, the apparatus includes a first transmitting module 82, which is described below:

The first sending module 82 is configured to send, in the radio resource control RRC reconfiguration operation, a reconfiguration message set to modify the home frequency band of the terminal camping cell to the terminal, where the reconfiguration message includes: including the modified terminal resident a system message block of the home frequency band of the cell and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal of the home frequency band of the camped cell.

The switching message is not included in the reconfiguration message.

9 is a block diagram showing a preferred structure of a second band modification apparatus according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes a second transmission module 92 and a third reception in addition to all the modules shown in FIG. Module 94, the device will be described below.

The second sending module 92 is configured to send, to the terminal, a request message that is set to request the terminal to report the capability information of the terminal. The third receiving module 94 is connected to the second sending module 92 and the first sending module 82, and is configured to receive the terminal. The capability information of the terminal.

When the reconfiguration message includes a system message block including a modified home frequency band of the terminal camping cell and a cell set to indicate that the system message block is effective immediately, the capability information reported by the terminal includes at least the terminal support system message block. The capability information of the band information immediately effective.

When the reconfiguration message includes a cell that is set to notify the terminal of the home frequency band of the camped cell, the capability information reported by the terminal includes at least information that is set to identify the capability of the terminal to support the reconfiguration process to modify the home frequency band of the terminal camped cell.

FIG. 10 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 10, the base station 102 includes the second band modification device 104 of any of the above.

The invention will now be described in connection with specific embodiments.

For example, in the current LTE time division duplexing (Time Division Duplexing, referred to as TDD network, the frequency band 38 and the frequency band 41 are used, wherein the cell 1 is the home frequency band 38, the cell 2 is the home frequency band 38 and the frequency band 41, and the cell 3 is the home. In band 41, cell 2 is a multi-band cell. As shown in Table 1:

Table 1

	是否归属频带38Whether to belong to the frequency band 38	是否归属频带41Whether to belong to the frequency band 41
	是否归属频带38Whether to belong to the frequency band 38	是否归属频带41Whether to belong to the frequency band 41	小区1Community 1	是Yes	否no
小区2 Community 2	是Yes	是Yes	小区1Community 1	是Yes	否no
小区2 Community 2	是Yes	是Yes	小区3Community 3	否no	是Yes

Assume that there are also a variety of terminals, which can be classified as shown in Table 2:

Table 2

	是否支持频带38Whether to support frequency band 38	是否支持频带41Whether to support band 41	是否支持多频带Whether to support multiple bands
	是否支持频带38Whether to support frequency band 38	是否支持频带41Whether to support band 41	是否支持多频带Whether to support multiple bands	终端1Terminal 1	是Yes	否no	否no
终端2 Terminal 2	是Yes	是Yes	是Yes	终端1Terminal 1	是Yes	否no	否no
终端2 Terminal 2	是Yes	是Yes	是Yes	终端3Terminal 3	是Yes	是Yes	否no

For terminal 1, and terminals 2, 3, both will access cell 2 in frequency band 38. The terminal 2 supports the same-band carrier aggregation of the frequency band 41, does not support the inter-band carrier aggregation of the frequency band 38 and the frequency band 41, and the cell 2 in the home frequency band 38 enters the connected state, and the base station plans to configure the cell 3 to the terminal for carrier aggregation. The simplest method is that the base station directly adds the cell 3 belonging to the frequency band 41 directly in the RRC reconfiguration. Since the terminal 1 does not support the inter-band carrier aggregation of the frequency band 38 and the frequency band 41, the terminal will perform RRC reconstruction to cause a service. Interrupted.

In order to solve the problem, in the embodiment of the present invention, the base station changes the frequency band to which the terminal belongs in the cell 2 when adding the cell 3 as the Scell or adding the cell 3 as the Scell. There are several ways to do this:

Method 1: Implemented by carrying a dedicated SIB1 in the RRC reconfiguration operation, and takes effect immediately.

Method 2: Perform a reconfiguration process to change the frequency band used by the terminal in the cell 2 to 41.

With the method proposed in the embodiment of the present invention, the terminal can perform carrier aggregation of the multi-band cell without causing service interruption.

The foregoing embodiment is described below with reference to Table 1 and Table 2. It is assumed that the scenario is as shown in FIG. 11, which is a schematic diagram of a scenario according to an embodiment of the present invention. Both cell 2 and cell 3 belong to base station 1, where cell 2 is home to bands 38 and 41 and cell 3 is home to band 41. Terminal 2 supports bands 38 and 41 while supporting multiple bands. For forward compatibility, the base station 1 broadcasts the system message to the cell 2, and the old frequency band is now 38 to notify the terminal through the original cell, and the newly added frequency band is 41 to notify the terminal through the new cell.

Embodiment 1

In this embodiment, the frequency band information in the default terminal support system message takes effect immediately.

The terminal 2 resides in the cell 2. Since the frequency band information transmitted by the original cell is 38 in the system message broadcast of the cell 2, the cell 2 in which the terminal camps uses the frequency band 38. FIG. 12 is a flowchart of a first carrier aggregation according to an embodiment of the present invention. As shown in FIG. 12, the process includes the following steps:

Step S1202: The terminal 2 initiates an RRC connection establishment process in the cell 2, and enters a connected state.

Step S1204: The base station requests the terminal 2 to report the capability information.

Step S1206: The terminal 2 reports the supported capability information to the base station, and includes intra-band carrier aggregation that supports multi-band and supports carrier aggregation into the frequency band 41.

Step S1208: The base station configures carrier aggregation for the terminal 2 according to the measurement report, and finds that the cell 3 has good signal quality, and the cell 3 belongs to the frequency band 41, the cell 2 belongs to the frequency band 38 and 41, and the terminal supports the intra-band carrier of the frequency band 41. Aggregation, determining to configure the cell 3, since the frequency band information transmitted by the original cell in the system message broadcast of the cell 2 is 38, the cell 2 in which the terminal 2 camps uses the frequency band 38, and the default terminal supports the frequency band information in the system message immediately. In effect, the use band 38 can be changed to 41 first. In order to avoid the impact of information modification on other terminals, the base station sends an RRC reconfiguration message to the terminal 2, and the system message of the cell 2 is modified to notify the terminal 2 of the cell 2 through a dedicated message. The system message block 1 needs to be updated, the frequency band 41 is transmitted through the original cell, and the terminal is indicated by another cell, and the new frequency band information in the dedicated system message block 1 takes effect immediately.

Step S1210: The terminal 2 receives the configuration of the dedicated system message of the base station, and immediately takes effect according to the indication. At this time, the cell 2 in which the terminal 2 camps uses the frequency band 41.

Step S1212: The base station configures the cell 3 for the terminal 2 to perform carrier aggregation.

Step S1214: The terminal 2 receives the configuration of the base station, and uses the cell 2 and the cell 3 to perform intra-band carrier aggregation, and the base station performs data transmission and reception by carrier aggregation.

In the step S1210, the cell indicating that the new frequency band information in the terminal system message takes effect immediately is a newly added single cell, which can be identified by one bit, and the terminal immediately takes effect and receives the received system message. New band information.

In order to simplify the processing, the system message block 1 including the cell band information may be processed as a whole, that is, the capability information reported by the terminal includes the capability of supporting the system message block 1 to take effect immediately, and the base station performs further processing according to the terminal capability information to indicate the terminal. The cell that is effective immediately in system message block 1 is a new individual cell, which can be identified by one bit, and the received system message block 1 is valid immediately after the terminal receives it.

Embodiment 2

In this embodiment, the terminal may support the frequency band information in the system message to take effect immediately or not.

The terminal 2 resides in the cell 2. Since the frequency band information transmitted by the original cell is 38 in the system message broadcast of the cell 2, the cell 2 in which the terminal camps uses the frequency band 38. FIG. 13 is a second flowchart of carrier aggregation according to an embodiment of the present invention. As shown in FIG. 13, the process includes the following steps:

Step S1302: The terminal 2 initiates an RRC connection establishment process in the cell 2, and enters a connected state.

Step S1304: The base station requests the terminal 2 to report the capability information.

Step S1306: The terminal 2 reports the supported capability information to the base station, and includes the capability of supporting multi-band, supporting carrier aggregation into the intra-band carrier of the frequency band 41, and further including the capability of supporting the frequency band information in the system message to take effect immediately.

Step S1308: The base station configures carrier aggregation for the terminal 2 according to the measurement report, and finds that the cell 3 has good signal quality, and the cell 3 belongs to the frequency band 41, the cell 2 belongs to the frequency band 38 and 41, and the terminal supports the intra-band carrier of the frequency band 41. Aggregation, determining to configure the cell 3, since the frequency band information transmitted by the original cell in the system message broadcast of the cell 2 is 38, the cell 2 in which the terminal 2 camps uses the frequency band 38, and discovers that the terminal supports the frequency band information in the system message immediately. In effect, the use band 38 can be changed to 41 first. In order to avoid the impact of information modification on other terminals, the base station sends an RRC reconfiguration message to the terminal 2, and the system message of the cell 2 is modified to notify the terminal 2 of the cell 2 through a dedicated message. The system message block 1 needs to be updated, the frequency band 41 is transmitted through the original cell, and the terminal is indicated by another cell, and the new frequency band information in the dedicated system message block 1 takes effect immediately.

Step S1310: The terminal 2 receives the configuration of the dedicated system message of the base station, and immediately takes effect according to the indication. At this time, the cell 2 in which the terminal 2 camps uses the frequency band 41.

Step S1312: The base station configures the cell 3 for the terminal 2 to perform carrier aggregation.

Step S1314: The terminal 2 receives the configuration of the base station, and uses the cell 2 and the cell 3 to perform intra-band carrier aggregation, and the base station performs data transmission and reception by carrier aggregation.

Embodiment 3

In this embodiment, the default terminal supports the reconfiguration process to modify the frequency band information used by the cell.

The terminal 2 resides in the cell 2. Since the frequency band information transmitted by the original cell is 38 in the system message broadcast of the cell 2, the cell 2 in which the terminal camps uses the frequency band 38. FIG. 14 is a flowchart of a third carrier aggregation according to an embodiment of the present invention. As shown in FIG. 14, the process includes the following steps:

Step S1402: The terminal 2 initiates an RRC connection establishment process in the cell 2, and enters a connected state.

Step S1404: The base station requests the terminal 2 to report the capability information.

Step S1406: The terminal 2 reports the supported capability information to the base station, and includes intra-band carrier aggregation that supports multi-band and supports carrier aggregation into the frequency band 41.

Step S1408: The base station configures carrier aggregation for the terminal 2 according to the measurement report, and finds that the cell 3 has good signal quality, and the cell 3 belongs to the frequency band 41, the cell 2 belongs to the frequency band 38 and 41, and the terminal supports the intra-band carrier of the frequency band 41. Aggregation, determining to configure the cell 3, because the frequency band information transmitted by the original cell in the system message broadcast of the cell 2 is 38, the cell 2 in which the terminal 2 camps uses the frequency band 38, and the terminal supports the reconfiguration process to modify the cell usage by default. For the frequency band information, the use frequency band 38 may be first changed to 41, and the base station directly sends the RRC reconfiguration message to the terminal 2, and does not include the handover cell, and the modified cell 2 use frequency band is changed from the frequency band 38 to the frequency band 41 at this time, and the new Adding a separate cell informs the terminal of the frequency band used by the current serving cell (in this case, cell 2) (in this case, 41).

Step S1410: The terminal 2 receives the RRC reconfiguration message of the base station, does not include the handover cell, and then performs the modification of the cell band, and the cell 2 in which the terminal 2 resides uses the frequency band 41.

Step S1412: The base station configures the cell 3 for the terminal 2 to perform carrier aggregation.

Step S1414: The terminal 2 receives the configuration of the base station, and uses the cell 2 and the cell 3 to perform intra-band carrier aggregation, and the base station performs data transmission and reception by carrier aggregation.

Embodiment 4

In this embodiment, the terminal may support the reconfiguration process to modify the frequency band information used by the cell, or may not support.

The terminal 2 resides in the cell 2. Since the frequency band information transmitted by the original cell is 38 in the system message broadcast of the cell 2, the cell 2 in which the terminal camps uses the frequency band 38. FIG. 15 is a flowchart of a fourth carrier aggregation according to an embodiment of the present invention. As shown in FIG. 15, the process includes the following steps:

Step S1502: The terminal 2 initiates an RRC connection establishment process in the cell 2, and enters a connected state.

Step S1504: The base station requests the terminal 2 to report the capability information.

Step S1506: The terminal 2 reports the supported capability information to the base station, and includes an intra-band carrier aggregation that supports multiple frequency bands, supports carrier aggregation to the frequency band 41, and also includes the capability of supporting the reconfiguration process to modify the frequency band information used by the cell.

Step S1508: The base station configures carrier aggregation for the terminal 2 according to the measurement report, and finds that the cell 3 has good signal quality, and the cell 3 belongs to the frequency band 41, the cell 2 belongs to the frequency band 38 and 41, and the terminal supports the intra-band carrier of the frequency band 41. Aggregation, determining to configure cell 3, step 5: Since the frequency band information transmitted by the original cell in the system message broadcast of the cell 2 is 38, the cell 2 in which the terminal 2 camps uses the frequency band 38, and the terminal supports the reconfiguration process modification by default. For the frequency band information used by the cell, the use frequency band 38 may be first changed to 41, and the base station directly sends the RRC reconfiguration message to the terminal 2, and does not include the handover cell, and the modified cell 2 use frequency band is changed from the frequency band 38 to the frequency band 41 at this time. The frequency band used by the current serving cell (in this case, cell 2) can be notified by adding a separate cell (in this case, 41).

Step S1510: The terminal 2 receives the RRC reconfiguration message of the base station, does not include the handover cell, and then performs the modification of the cell band, and the cell 2 in which the terminal 2 resides uses the frequency band 41.

Step S1512: The base station configures the cell 3 for the terminal 2 to perform carrier aggregation.

Step S1514: The terminal 2 receives the configuration of the base station, and uses the cell 2 and the cell 3 to perform intra-band carrier aggregation, and the base station performs data transmission and reception by carrier aggregation.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Perform the steps shown or described, or separate them into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the method, device, terminal, and base station for modifying a frequency band provided by the embodiments of the present invention have the following beneficial effects: the problem of carrier aggregation in a multi-band cell that cannot be realized in the related art is solved, thereby achieving a plurality of implementations. The effect of carrier aggregation of a frequency band cell.

Claims

A method for modifying a frequency band, comprising:

Receiving, by the terminal, a reconfiguration message sent by the base station in a radio resource control RRC reconfiguration operation, where the reconfiguration message includes: a system message block including the modified home frequency band of the terminal camped cell, and setting to indicate the a cell that is immediately valid for the system message block; and/or a cell that is set to notify the terminal to camp on the home frequency band of the cell;

The terminal modifies a home frequency band of the terminal camped cell according to the received reconfiguration message.
The method of claim 1 wherein the reconfiguration message does not include a handover cell.
The method of claim 1, wherein before the receiving the reconfiguration message, the terminal further comprises:

Receiving, by the terminal, request information that is sent by the base station to request capability information of the terminal to report the terminal;

The terminal reports the capability information of the terminal according to the request information.
The method of claim 1, wherein when the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately validated Modifying, by the terminal, the home frequency band of the terminal camped cell according to the received reconfiguration message includes:

The terminal immediately validates the system message block according to the received cell in the received reconfiguration message, and modifies the home frequency band of the terminal camped cell.
The method of claim 3, wherein when the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately validated The capability information of the terminal at least includes capability information that the terminal supports the frequency band information in the system message block to be effective immediately.
The method according to claim 3, wherein when the reconfiguration message comprises a cell set to notify the terminal to camp on a home frequency band of the cell, the capability information of the terminal at least comprises setting to identify the terminal support The reconfiguration process modifies information about the capabilities of the home frequency band of the terminal camped cell.
A method for modifying a frequency band, comprising:

And the base station sends, in the radio resource control RRC reconfiguration operation, a reconfiguration message, which is set to modify the home frequency band of the terminal camping cell, to the terminal, where the reconfiguration message includes: the modified terminal resident cell a system message block of the home frequency band and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal to camp on the home frequency band of the cell.
The method of claim 7 wherein the reconfiguration message does not include a handover cell.
The method according to claim 7, wherein the base station further includes: before the retransmission message set to modify the home frequency band of the terminal camping cell, to the terminal in the RRC RRC reconfiguration operation, the method further includes:

Sending, by the base station, a request message that is set to request capability information of the terminal to report the terminal to the terminal;

The base station receives capability information of the terminal reported by the terminal.
The method of claim 9, wherein when the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately validated The capability information reported by the terminal includes at least the capability information that the terminal supports the frequency band information in the system message block to take effect immediately.
The method according to claim 9, wherein when the reconfiguration message includes a cell that is set to notify the terminal to camp on a home frequency band of the cell, the capability information reported by the terminal includes at least The terminal supports information that the reconfiguration process modifies the capability of the home frequency band of the terminal camped cell.
A frequency band modification device is applied to the terminal side, including:

a first receiving module, configured to receive a reconfiguration message sent by the base station in a radio resource control RRC reconfiguration operation, where the reconfiguration message includes: a system message block including the modified home frequency band of the terminal camped cell And a cell set to indicate that the system message block takes effect immediately; and/or a cell set to notify the terminal to camp on the home frequency band of the cell;

And a modifying module, configured to modify a home frequency band of the terminal camped cell according to the received reconfiguration message.
The apparatus of claim 12, wherein the reconfiguration message does not include a handover cell.
The apparatus of claim 12, further comprising:

a second receiving module, configured to receive, by the base station, request information that is set to request capability information of the terminal to report the terminal;

The reporting module is configured to report the capability information of the terminal according to the request information.
The apparatus of claim 12, wherein when the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately validated The modification module includes:

And an effective unit, configured to immediately validate the system message block according to the received cell in the received reconfiguration message, and modify a home frequency band of the terminal camped cell.
The apparatus of claim 14, wherein when the reconfiguration message includes a system message block including a modified home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately validated The capability information of the terminal at least includes capability information that the terminal supports the frequency band information in the system message block to be effective immediately.
The apparatus according to claim 14, wherein when the reconfiguration message includes a cell set to notify the terminal to camp on a home frequency band of the cell, the capability information of the terminal at least includes setting to identify the terminal support The reconfiguration process modifies information about the capabilities of the home frequency band of the terminal camped cell.
A terminal comprising the apparatus of any one of claims 12 to 17.
A frequency band modification apparatus is applied to a base station side, including:

a first sending module, configured to send, in a radio resource control RRC reconfiguration operation, a reconfiguration message set to modify a home frequency band of the terminal camping cell to the terminal, where the reconfiguration message includes: including the modified location a system message block of a home frequency band of the terminal camped cell and a cell set to indicate that the system message block is immediately valid; and/or a cell set to notify the terminal to camp on the home frequency band of the cell.
The apparatus of claim 19, wherein the reconfiguration message does not include a handover cell.
The apparatus of claim 19, further comprising:

a second sending module, configured to send, to the terminal, a request message that is set to request capability information of the terminal to report the terminal;

The third receiving module is configured to receive capability information of the terminal reported by the terminal.
The apparatus of claim 21, wherein the reconfiguration message comprises a system message block comprising a modified home frequency band of the terminal camped cell and is set to indicate that the system message block is immediately validated At the time of the cell, the capability information reported by the terminal includes at least the capability information that the terminal supports the band information in the system message block to be effective immediately.
The apparatus according to claim 21, wherein when the reconfiguration message includes a cell that is set to notify the terminal to camp on a home frequency band of the cell, the capability information reported by the terminal includes at least The terminal supports information that the reconfiguration process modifies the capability of the home frequency band of the terminal camped cell.
A base station comprising the apparatus of any one of claims 19 to 23.