WO2013185564A1

WO2013185564A1 - Spectrum handoff method and equipment based on cognitive radio system

Info

Publication number: WO2013185564A1
Application number: PCT/CN2013/076913
Authority: WO
Inventors: 白文岭; 蒋成钢; 李媛媛; 杨宇
Original assignee: 电信科学技术研究院
Priority date: 2012-06-13
Filing date: 2013-06-07
Publication date: 2013-12-19
Also published as: CN103491547A; CN103491547B

Abstract

Disclosed are a spectrum handoff method and equipment based on a cognitive radio system. Before spectrum handoff, base station equipment and terminal equipment maintain uplink synchronization on a source operating frequency point. The method comprises: the base station equipment recovering a cell at a target operating frequency point; the base station equipment receiving an uplink resource request from the terminal equipment on the target operating frequency point; the base station equipment allocating an uplink resource for the terminal equipment on the target operating frequency point; the base station equipment transmitting the uplink resource to the terminal equipment on the target operating frequency point; and the base station equipment receiving a spectrum handoff completion message from the terminal equipment on the target operating frequency point, which is transmitted by the terminal equipment using the uplink resource. The embodiments of the present invention are utilized to reduce the spectrum handoff failure probability and service interruption time of a CR system, and improve the user experience of the CR system.

Description

Spectrum switching method and device based on cognitive radio system

The present invention relates to the field of communication technologies, and in particular, to a spectrum switching method and apparatus based on a cognitive radio system. Background technique

The radio communication spectrum is a valuable natural resource. With the rapid development of wireless communication technology, the problem of poor spectrum resources is becoming more and more serious. In order to alleviate the current situation of spectrum resources, relevant departments and agencies have monitored and studied the wireless communication spectrum. It is found that certain frequency bands (such as TV bands) are not used most of the time or are not used in most areas, and in some frequency bands, there are cases where multiple systems and multiple users compete at the same time, that is, there is no use of spectrum resources. A phenomenon of equilibrium. Summary of the invention

The embodiments of the present invention provide a spectrum switching method and device based on a cognitive radio system, so as to reduce the probability of spectrum switching failure and service interruption time, and improve the user experience of the CR system.

In order to achieve the above object, an embodiment of the present invention provides a spectrum switching method based on a cognitive radio system. Before the spectrum switching, the base station device and the terminal device maintain uplink synchronization at a source operating frequency point. The method includes:

The base station device recovers a cell at a target working frequency point;

Receiving, by the base station device, an uplink resource request from the terminal device at the target working frequency point; The base station device allocates an uplink resource to the terminal device at the target working frequency point;

Sending, by the base station device, the uplink resource to the terminal device at the target working frequency point;

And receiving, by the base station device, a spectrum switching complete message sent by the terminal device by using the uplink resource from the terminal device at the target working frequency point.

An embodiment of the present invention provides a spectrum switching method based on a cognitive radio system. Before the spectrum switching, the terminal device and the base station device maintain uplink synchronization at a source working frequency point. The method includes:

After searching for the target working frequency point, the terminal device determines whether the uplink synchronization is maintained between the self and the base station device at the target working frequency point;

And if the terminal device and the base station device maintain uplink synchronization at the target working frequency point, the terminal device sends an uplink resource request to the base station device;

Receiving, by the terminal device, an uplink resource allocated by the base station device to the terminal device at the target working frequency point, at a target working frequency point;

The terminal device sends a spectrum switching completion message to the base station device by using the uplink resource.

An embodiment of the present invention provides a base station device, including:

a management module, configured to maintain uplink synchronization of the base station device and the terminal device at a source working frequency point before the spectrum switching;

a receiving module, configured to: after the base station device recovers a cell at a target working frequency point, receive an uplink resource request from the terminal device at the target working frequency point, and receive the terminal at the target working frequency point The spectrum switching completion message sent by the device by using the uplink resource;

An allocating module, configured to allocate, on the target working frequency point, the terminal device Line resource

And a sending module, configured to send the uplink resource to the terminal device at a target working frequency point.

An embodiment of the present invention provides a terminal device, including:

a management module, configured to maintain uplink synchronization of the terminal device and the base station device at a source working frequency point before the spectrum switching;

a determining module, configured to determine, after searching for the target working frequency point, whether uplink synchronization is maintained between the terminal device and the base station device at the target working frequency point;

a first sending module, configured to send an uplink resource request to the base station device if the terminal device and the base station device are synchronized at the target working frequency point;

a receiving module, configured to receive, at the target working frequency, an uplink resource allocated by the base station device to the terminal device at the target working frequency point;

And a second sending module, configured to send, by using the uplink resource, a spectrum switching complete message to the base station device.

Compared with the prior art, the embodiment of the present invention has at least the following advantages: In the embodiment of the present invention, in the spectrum switching process, the base station device may be the terminal at the target working frequency after receiving the uplink resource application of the terminal device. The device allocates an uplink resource, and triggers the terminal device to send a spectrum switching complete message. By replacing the random access mode in this way, the random access conflict in the spectrum switching process of the CR system is avoided, the failure probability of the spectrum switching of the CR system and the service interruption time are reduced, and the user experience of the CR system is improved. DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. In the field of ordinary people, in the absence of creative work Further drawings can also be obtained from these drawings.

1 is a flow chart of implementing spectrum switching in a CR system;

2 is a schematic flow chart of a spectrum switching method based on a cognitive radio system according to Embodiment 1 of the present invention;

3 is a schematic flowchart of a spectrum switching method based on a cognitive radio system according to Embodiment 2 of the present invention;

4 is a schematic flowchart of a spectrum switching method based on a cognitive radio system according to Embodiment 3 of the present invention;

FIG. 5 is a schematic flowchart of a spectrum switching method based on a cognitive radio system according to Embodiment 4 of the present invention; FIG.

6 is a schematic structural diagram of a base station device according to Embodiment 5 of the present invention; and FIG. 7 is a schematic structural diagram of a terminal device according to Embodiment 6 of the present invention. The technical solutions in the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The concept of CR (Cognitive Radio) is generated in this context. The basic idea is: The CR system can dynamically opportunistically monitor the changes in the current wireless environment without causing interference to the authorization system. Connect to the white space for communication; When the CR system opportunistically accesses the blank spectrum of the authorization system, it is required to ensure that the authorized system service is not harmful to the CR system. This requires: (1) The CR system has the ability to determine the white space spectrum. , that is, accurately determine the blank spectrum of the licensed system band; (2) CR system has spectrum cut The ability to change, that is, when the system that is authorized to work on the white space (source operating frequency) is to use the white space or the currently used white space quality does not meet the service quality requirements of the CR system, the CR system can exit in time. The white space currently in use.

As shown in FIG. 1 , a flow chart is implemented for the spectrum switching in the CR system, and the continuity of the service of the CR system can be ensured by the implementation process. Specifically, after the spectrum switching, the CR system can exit the source working frequency point. Switch the entire CR system to another blank spectrum (target operating frequency point) to resume the service.

In the prior art, the spectrum switching process is based on a static licensed band design, and the number of handover terminal devices is generally small for a handover scenario between different cells. The basic process is: the base station device sends a spectrum switching command to the terminal device, and the notification is The target device operating frequency point and its radio resource configuration; after receiving the spectrum switching command, the terminal device searches for the target working frequency point from the open source working frequency point, and performs random operation on the target working frequency point after searching for the target frequency point Accessing, performing uplink synchronization with the base station device by using a random access procedure, and transmitting a spectrum switching complete message to the base station device.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art:

In the spectrum switching process of the CR system, all the RRC (Radio Resource Control) connected terminal devices in the entire cell need to be switched to the target working frequency point, and there are many terminal devices in the RRC connected state (which can be in 1200). the above). If a contention random access procedure is used, the random access resources are limited, which is much smaller than the number of terminal devices in the RRC connected state. Therefore, the existing spectrum switching mode is adopted, which causes a large number of terminal devices to concentrate on performing a random access process at a target working frequency in a short time, resulting in a higher probability of random access failure and random access delay, resulting in a delay. Higher spectrum switching failure probability and higher service interruption time affect the user experience of the CR system.

Embodiment 1

Embodiment 1 of the present invention provides a spectrum switching method based on a cognitive radio system, The application scenarios of the method include, but are not limited to, LTE (Long Term Evolution), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), and WCDMA (Wideband Code Division Multiple) Access, Wideband Code Division Multiple Access), CDMA (Code Division Multiple Access) -2000 and other wireless communication systems; As shown in FIG. 2, the method includes the following steps:

Step 201: Before the spectrum switching, the base station device (the base station device in the CR system) and the terminal device (the terminal device in the CR system) maintain uplink synchronization at the source operating frequency point.

In a preferred embodiment of the present invention, in order to implement the uplink synchronization between the base station device and the terminal device at the source operating frequency, the base station device determines whether the terminal device is connected to the base station device by detecting the uplink signal sent by the terminal device. The uplink synchronization is maintained on the source operating frequency; if there is a synchronization deviation, the base station device sends a timing adjustment command to the terminal device to indicate that the terminal device needs to perform the adjustment of the uplink timing synchronization point by using the timing adjustment command; and: the terminal device receives the When the timing adjustment command of the base station device is used, the adjustment of the uplink timing synchronization point is performed, that is, the timing synchronization of the uplink channel/signal in the uplink transmission is adjusted; after performing the above processing, the base station device and the terminal device may enable the base station device and the terminal device to The uplink synchronization is maintained at the source operating frequency.

Step 202: Before the spectrum switching, the base station device and the terminal device pre-agreed the transmission mode and the resource of the uplink resource application, where the uplink resource application is used to apply for an uplink resource (such as a time-frequency code), and the uplink resource is used for The terminal device sends the spectrum switching completion message. It is noted that the uplink resource application is orthogonal and non-conflicting between the terminal devices in the cell.

The base station device and the terminal device pre-agreed the transmission mode and the resource of the uplink resource application, including but not limited to: the base station device and the terminal device statically specify the sending mode and resource of the uplink resource application by using a protocol; or, the base station device and the terminal device are dynamically configured. Method convention The sending mode and resource of the line resource request, that is, the base station device configures the sending mode and resource of the uplink resource request for the terminal device, and sends the sending mode and resource of the uplink resource request to the terminal device; for example, the base station device passes the dedicated signaling or system. The air interface message such as the broadcast message sends the sending mode and resource of the uplink resource request to the terminal device.

It should be noted that there is no sequence relationship between step 201 and step 202. Step 202 may also be performed before step 201, and step 202 is an optional step.

Step 203: When a user authorized to work at the source working frequency point uses the working frequency point or the channel quality of the source working frequency point decreases, the base station device determines that a spectrum switching process needs to be performed to generate a spectrum switching command. And sending the spectrum switching command to the terminal device, where the spectrum switching command includes at least a target working frequency point and/or radio resource configuration information.

In a preferred embodiment of the present invention, the spectrum switching command may further carry indication information about whether uplink synchronization is maintained between the base station device and the terminal device at the target working frequency point; and the base station device and the terminal device Whether the method for determining whether to maintain the uplink synchronization, the method includes: determining, by the base station device, whether the time length between the time when the terminal device sends the uplink resource request and the time when the last time the timing adjustment command is sent does not exceed the specified time threshold (can be set according to actual experience), And whether the target frequency of the target working frequency and the source frequency of the source operating frequency does not exceed the specified frequency threshold (can be set according to actual experience); if yes, the base station device determines that the target frequency is maintained between itself and the terminal device. Uplink synchronization; if not, the base station device determines that uplink synchronization is not maintained at the target operating frequency between itself and the terminal device.

In a preferred embodiment of the present invention, the spectrum switching command may also carry the sending mode and the resource of the uplink resource request, and the obtaining manner may be that the base station device is configured as the terminal device.

It should be noted that since step 202 is an optional step, if it is in an actual application, If the step 202 is performed, the spectrum switching command may carry the sending mode and the resource of the uplink resource request, and may not carry the sending mode and the resource of the uplink resource request; if the actual application does not perform step 202, the spectrum is not used. The switching command needs to carry the sending mode and resources of the uplink resource request.

Step 204: After transmitting the spectrum switching command to the terminal device, the base station device stops the signal transmission and reception at the source operating frequency point.

Step 205: After the base station device stops transmitting and receiving signals at the source working frequency point, the base station device recovers the cell by using the target working frequency point.

Step 206: After receiving the spectrum switching command, if the spectrum switching command carries the sending mode and the resource of the uplink resource request, the terminal device needs to store or update the sending mode and resource of the uplink resource request (ie, if there is no uplink currently) The sending mode and resource of the resource request are directly stored in the sending mode and resource of the uplink resource request. If there is currently the sending mode and resource of the uplink resource request, the current sending mode and resource of the uplink resource request are updated. In the embodiment of the present invention, the resource of the uplink resource application is a resource used for sending the uplink resource application.

Step 207: After receiving the spectrum switching command, the terminal device is away from the open source working frequency point, and performs downlink synchronization with the base station device at the target working frequency point, that is, searches for the target working frequency point.

It should be noted that there is no sequence relationship between step 206 and step 207. Step 207 may also be performed before step 206; and there is no sequence relationship between step 206 and step 207 and step 204 and step 205, such as steps. 207 may be located before step 204 or before step 205. Step 206 may be before step 204 or before step 205.

Step 208: After searching for the target working frequency point, the terminal device determines whether the uplink synchronization is maintained between the self and the base station device at the target working frequency point; if yes, step 209 is performed; if not, the uplink synchronization is invalid. In this case, the existing spectrum switching method needs to be adopted. In the embodiment of the present invention, the terminal device determines whether the uplink synchronization is maintained between the self and the base station device at the target working frequency, including but not limited to the following manners:

The first time, the terminal device determines whether the time between the current time or the time when the uplink resource request is sent by itself is not longer than the specified time threshold (according to the actual experience, it can be used with the base station device) The specified time threshold is the same), and the center frequency interval between the target working frequency and the source operating frequency does not exceed the specified frequency threshold (according to the actual experience, it can be the same as the specified frequency threshold used by the base station equipment); If yes, the terminal device determines that it maintains uplink synchronization with the base station device at the target operating frequency point; if not, the terminal device determines that the base device does not maintain uplink synchronization with the base station device at the target operating frequency point.

Manner 2: When the spectrum switching command carries the indication information that the uplink synchronization is maintained between the base station device and the terminal device, the terminal device obtains the base station device and the terminal from the spectrum switching command from the base station device. Whether the device maintains uplink synchronization indication information at the target working frequency point, and uses the indication information to determine whether the terminal device and the base station device maintain uplink synchronization at the target working frequency point.

Step 209: The terminal device sends an uplink resource request to the base station device by using a sending mode and a resource of the uplink resource request, where the uplink resource request is used to apply for an uplink resource, and the uplink resource is used to enable the terminal device to send, to indicate that the terminal device has been used. The spectrum switching completion message of the spectrum switching process is successfully completed.

In the embodiment of the present invention, the sending mode and the resource of the uplink resource application are previously stored, and the manner in which the terminal device obtains the sending mode and the resource of the uplink resource request includes but is not limited to: the terminal device and the base station device pre-agreed the sending of the uplink resource request. The method and the resource; or, the terminal device obtains the sending mode and the resource of the uplink resource request from the spectrum switching command; in the agreement process, the terminal device and the base station device statically specify the sending of the uplink resource request by using a protocol The mode and the resource; or, the terminal device receives the sending mode and resource of the uplink resource request from the base station device by using an air interface message such as a dedicated signaling or a system broadcast message.

In the embodiment of the present invention, in a process in which the base station device and the terminal device pre-agreed the transmission mode and the resource of the uplink resource application, the terminal device may further agree with the base station device to the maximum number of times the uplink resource application is sent; and the terminal device sends the uplink resource request to the base station device. The uplink resource application includes: the terminal device sends the uplink resource request to the base station device by using the sending mode and the resource of the uplink resource application, and the terminal device receives the uplink resource allocated by the base station device for the terminal device at the target working frequency point or reaches the maximum. The number of transmissions; If the number of uplink resource application transmissions reaches the maximum number of transmissions, and the uplink resources allocated by the base station equipment to the terminal equipment at the target operating frequency point are not received, the existing spectrum switching mode is adopted.

Step 210: After recovering the cell at the target working frequency point, the base station device receives the uplink resource request from the terminal device at the target working frequency, allocates the uplink resource to the terminal device at the target working frequency, and performs the target working frequency at the target working frequency. The allocated uplink resource is sent to the terminal device.

In a preferred embodiment of the present invention, the base station device may also allocate an uplink sending mode to the terminal device at the target working frequency point, and send the allocated uplink sending mode to the terminal device at the target working frequency point. The uplink transmission mode includes, but is not limited to, a modulation and coding scheme, a HARQ (Hybrid Auto Repeat request) information, and power control information.

Step 211: The terminal device receives, at the target working frequency, the uplink resource allocated by the base station device to the terminal device at the target working frequency, and uses the uplink resource to send, to the base station device, a spectrum switch, which is used to indicate that the terminal device has successfully completed the spectrum switching process. Complete the message.

In a preferred embodiment of the present invention, the base station device may further allocate an uplink sending mode to the terminal device at the target working frequency point, and send the allocated uplink sending mode to the terminal device at the target working frequency point; Therefore, the terminal device is connected at the target working frequency The uplink transmission mode allocated by the base station device to the terminal device at the target working frequency point, and the spectrum switching completion message is sent to the base station device by using the uplink resource and the uplink transmission mode.

In the embodiment of the present invention, in the spectrum switching process, the base station device may allocate uplink resources to the terminal device at the target working frequency point after receiving the uplink resource request of the terminal device. The conflicting uplink resource, that is, the uplink resource is allocated to the terminal device by using the resource application method and the resource of the conflicting resource between the terminal devices in the pre-agreed cell, and the terminal device is triggered to send the spectrum switching complete message, thereby omitting the randomization in the spectrum switching process. The access process avoids random access conflicts during the spectrum switching process of the CR system, which in turn reduces the spectrum switching failure probability and service interruption time of the CR system, and improves the user experience of the CR system.

Embodiment 2

The second embodiment of the present invention provides a spectrum switching method based on a cognitive radio system, and the processing of the base station device is described in detail. As shown in FIG. 3, the method includes the following steps: Step 301: Before the spectrum switching, the base station device (Base station equipment in the CR system) maintains uplink synchronization with the terminal equipment (terminal equipment in the CR system) at the source operating frequency point.

In a preferred embodiment of the present invention, the base station device determines whether the terminal device maintains uplink synchronization with the base station device at the source working frequency point by detecting the uplink signal sent by the terminal device; if there is a synchronization deviation, the base station device sends the uplink synchronization to the terminal device. The device sends a timing adjustment command to indicate that the terminal device needs to perform uplink timing synchronization point adjustment by using the timing adjustment command to ensure that the base station device maintains uplink synchronization with the terminal device at the source working frequency point.

Step 302: Before the spectrum switching, the base station device and the terminal device pre-agreed the transmission mode and the resource of the uplink resource request. The uplink resource request is used to apply for the uplink resource, and the uplink resource is used to enable the terminal device to send the spectrum switching complete message. It should be noted that the uplink resource application is orthogonal and non-conflicting between the terminal devices in the cell.

The base station device and the terminal device pre-agreed the transmission mode and resource of the uplink resource application, and the packet The base station device and the terminal device statically specify the transmission mode and resource of the uplink resource application through the protocol; or the base station device and the terminal device agree on the transmission mode and resource of the uplink resource application in a dynamic configuration manner, that is, the base station device is the terminal. The device configures the sending mode and the resource of the uplink resource application, and sends the sending mode and the resource of the uplink resource request to the terminal device. For example, the base station device sends the uplink resource application sending mode and resources through the air interface message such as the dedicated signaling or the system broadcast message. Send to the terminal device.

In addition, in a process in which the base station device and the terminal device pre-agreed the transmission mode and the resource of the uplink resource request, the terminal device may further pre-agreed with the base station device the maximum number of times the uplink resource application is sent.

Step 303: When the user authorized to work at the source working frequency (current working frequency point) wants to use the working frequency point or the channel quality of the source working frequency point decreases, the base station device determines that the spectrum switching process needs to be performed. And generating a spectrum switching command, and sending the spectrum switching command to the terminal device, where the spectrum switching command includes at least a target working frequency point and/or radio resource configuration information.

In a preferred embodiment of the present invention, the spectrum switching command may further carry indication information about whether uplink synchronization is maintained between the base station device and the terminal device at the target working frequency point; and the base station device and the terminal device Whether the method for determining the uplink synchronization is performed at the target working frequency, including but not limited to: whether the time length between the time when the base station device determines that the terminal device sends the uplink resource request and the time when the latest transmission timing adjustment command is sent is not exceeded. Specify the time threshold (can be set according to actual experience), and whether the target frequency of the target and the center frequency of the source frequency does not exceed the specified frequency threshold (can be set according to actual experience); if yes, the base station device determines itself and the terminal device Maintaining uplink synchronization between the target operating frequency points; if not, the base station device determines that uplink synchronization is not maintained at the target operating frequency point between itself and the terminal device.

In a preferred implementation manner of the embodiment of the present invention, the spectrum switching command may also carry The sending mode and the resource with the uplink resource request may be obtained by the base station device as the terminal device.

Step 304: After transmitting the spectrum switching command to the terminal device, the base station device stops transmitting and receiving signals at the source operating frequency point.

Step 305: After the base station device stops transmitting and receiving signals at the source working frequency point, the base station device recovers the cell by using the target working frequency point.

Step 306: The base station device receives an uplink resource request from the terminal device.

Step 307: After receiving the uplink resource request, the base station device allocates an uplink resource and an uplink sending mode to the terminal device at the target working frequency point (for example, the uplink resource and the uplink sending mode are simultaneously allocated as an example), and the allocated uplink resource is used. And sending the uplink transmission mode to the terminal device.

Step 308: The base station device receives the spectrum switching complete message sent by the terminal device, and confirms that the terminal device has completed the spectrum switching process.

Embodiment 3

The third embodiment of the present invention provides a spectrum switching method based on a cognitive radio system, and the processing of the terminal device is described in detail. As shown in FIG. 4, the method includes the following steps: Step 401: Before the spectrum switching, the terminal device (The terminal equipment in the CR system) maintains uplink synchronization with the base station equipment (base station equipment in the CR system) at the source operating frequency point.

In a preferred embodiment of the present invention, the terminal device detects a timing adjustment command sent by the base station device, and performs an adjustment of the uplink timing synchronization point according to the timing adjustment command, that is, adjusts an uplink channel/signal in the uplink transmission of the terminal device. Timing synchronization ensures that the terminal device maintains uplink synchronization with the base station device at the source operating frequency point.

Step 402: Before the spectrum switching, the terminal device and the base station device pre-agreed the sending mode and the resource of the uplink resource request. The uplink resource request is used to apply for the uplink resource, and the uplink resource is used to enable the terminal device to send the spectrum switching complete message. ; have to be aware of is, The uplink resource request is orthogonal and non-conflicting between the terminal devices in the cell.

In the embodiment of the present invention, the terminal device and the base station device pre-agreed the transmission mode and the resource of the uplink resource application, including but not limited to: the terminal device and the base station device statically specify the sending mode and resource of the uplink resource application through the protocol; or, the terminal device passes An air interface message such as a dedicated signaling or a system broadcast message receives a transmission mode and a resource of an uplink resource request from a base station device.

In addition, in a process in which the terminal device and the base station device pre-agreed the transmission mode and the resource of the uplink resource application, the terminal device may further pre-agreed with the base station device the maximum number of times the uplink resource application is sent.

Step 403: The terminal device receives a spectrum switching command from the base station device, where the spectrum switching command includes at least a target working frequency point and/or radio resource configuration information. In an optional implementation manner of the embodiment of the present invention, the spectrum is The switching command may further carry indication information about whether the uplink synchronization is maintained between the base station device and the terminal device at the target working frequency. In an optional implementation manner of the embodiment, the spectrum switching command may also be carried. The sending method and resources of the uplink resource application.

Step 404, after the terminal device receives the spectrum switching command, if the spectrum switching command carries the sending mode and the resource of the uplink resource request, the terminal device needs to store or update the sending mode and resource of the uplink resource request, and perform step 405; Otherwise, step 405 is directly executed.

Step 405: After receiving the spectrum switching command, the terminal device is away from the open source working frequency point, and performs downlink synchronization with the base station device at the target working frequency point, that is, searches for the target working frequency point.

Step 406: The terminal device sets the number of times the uplink resource application is sent to 0.

Step 407: After searching for the target working frequency point, the terminal device determines whether the uplink synchronization is maintained between the self and the base station device at the target working frequency point; if yes, step 408 is performed; if not, the uplink synchronization is invalid. In this case, the existing spectrum switching method needs to be adopted. This method will not be described again.

In the embodiment of the present invention, the terminal device determines whether the uplink synchronization is maintained between the self and the base station device at the target working frequency, including but not limited to the following manners:

Manner 1 : The terminal device determines whether the time between the current time or the time when the uplink resource application is sent by itself is not longer than the specified time threshold (based on actual experience), and the target working frequency is Whether the center frequency interval of the source working frequency point does not exceed the specified frequency threshold (set according to actual experience); if yes, the terminal device determines that itself and the base station device maintain uplink synchronization at the target working frequency point; if not, the terminal device determines itself The uplink synchronization is not maintained with the base station device at the target operating frequency point.

Step 408: The terminal device sends an uplink resource request to the base station device by using the sending mode and the resource of the uplink resource request that is stored by the terminal, and increases the number of times the uplink resource application is sent by one.

Step 409, the terminal device detects whether the uplink resource and the uplink transmission mode allocated by the base station device for the terminal device are received (the method for detecting the uplink resource and the uplink transmission mode at the same time is taken as an example); if yes, step 410 is performed; otherwise, step 411 is performed. .

Step 410: The terminal device sends, by using the allocated uplink resource and the uplink sending manner, a spectrum switching complete message for indicating that the terminal device has successfully completed the spectrum switching process, to the base station device.

Step 411: The terminal device determines whether the number of times the uplink resource application is sent reaches the maximum number of times the uplink resource application is sent. If not, step 407 is performed, and if yes, the existing one is used. Spectrum switching mode.

Embodiment 4

Embodiment 4 of the present invention provides a spectrum switching method based on a cognitive radio system,

For example, the LTE system implements a spectrum switching process in which the base station device triggers the terminal device to send a spectrum switching completion message in the LTE-CR system. In the application scenario, the base station device is an eNode B, and the terminal device is a UE (User Equipment, user). Equipment); It should be noted that, for other application scenarios applicable to the spectrum switching method, such as TD-SCDMA, WCDMA, and other wireless communication systems, the corresponding processing is similar to the processing of the LTE system, and is not described in detail later; As shown in FIG. 5, the spectrum switching method in the LTE system includes the following steps:

Step 501: Before the spectrum switching, the eNode B (the eNode B in the LTE-CR system) and the UE (the UE in the LTE-CR system) maintain uplink synchronization at the source operating frequency point.

In a preferred embodiment of the present invention, in order to implement the uplink synchronization between the eNode B and the UE at the source operating frequency, the eNode B determines whether the UE and the eNode B are at the source working frequency by detecting the uplink signal sent by the UE. Maintaining the uplink synchronization; if there is a synchronization deviation, the eNode B sends a TAC (Timing Advanced Command) to the UE to indicate that the UE needs to perform the adjustment of the uplink timing synchronization point through the TAC: the UE receives the eNode B from the eNode B. In the TAC, the uplink timing synchronization point is adjusted, that is, the timing synchronization of the uplink channel/signal in the uplink transmission is adjusted, such as adjusting the PUSCH (Physical Uplink Shared Channel) in the uplink transmission, PUCCH (Physical Uplink Control Channel, physical uplink control channel), timing synchronization of SRS (Sounding Reference Signal), etc.

Based on this, after the eNode B and the UE perform the foregoing processing, the eNode B and the UE can maintain uplink synchronization at the source working frequency.

Step 502, the eNode B and the UE statically specify by using a protocol: adopting SR (Schedule) Request, scheduling request) The uplink resource application, that is, the sending method of the uplink resource request, specifically: sending the uplink resource request by using the scheduling request SR. .

In this step, in the process of the eNode B and the UE appointing the uplink resource application, the method may further include: agreeing on the maximum number of times the SR is sent.

Step 503: When the eNode B finds that the user authorized to work at the source working frequency point uses the working frequency point or the channel quality of the source working frequency point decreases, the eNode B determines that the spectrum switching process needs to be performed, and generates The spectrum switching command is sent to the UE, and the spectrum switching command includes at least a target working frequency point and/or radio resource configuration information.

In a preferred embodiment of the present invention, the spectrum switching command may further include indication information about whether the eNode B and the UE maintain uplink synchronization at the target working frequency point; and whether the eNode B and the UE are between the eNode B and the UE. And determining, by the eNode B, whether the time length between the time when the UE sends the uplink resource request and the time when the last time the timing adjustment command is sent does not exceed the specified time threshold, and the target Whether the center frequency interval between the working frequency point and the source working frequency point does not exceed the specified frequency threshold; if yes, the eNode B determines that it maintains uplink synchronization with the UE at the target working frequency point; if not, the eNode B determines itself and The uplink synchronization is not maintained between the UEs at the target operating frequency.

In a preferred embodiment of the embodiment of the present invention, the spectrum switching command may also carry an updated SR configuration.

Step 504: After sending the spectrum switching command to the UE, the eNode B stops transmitting and receiving signals at the source operating frequency point.

Step 505: After stopping the signal transmission and reception at the source working frequency point, the eNode B recovers the cell by using the target working frequency point.

Step 506: After receiving the spectrum switching command, the UE if the spectrum switching command is included in the packet With the updated SR configuration, the UE updates its SR configuration.

Step 507: After receiving the spectrum switching command, the UE is away from the open source working frequency point, and performs downlink synchronization with the eNode B at the target working frequency point, that is, searches for the target working frequency point.

Step 508: After searching for the target working frequency point, the UE determines whether the uplink synchronization is maintained between the eNodeB and the eNode B. If yes, step 209 is performed; if not, the uplink synchronization is invalid. The existing spectrum switching mode is required, and the method is not described here.

In the embodiment of the present invention, the UE determines whether the uplink synchronization is maintained between the UE and the eNode B at the target working frequency, including but not limited to the following:

Manner 1: Whether the time between the current time of the UE or the time when the UE sends the uplink resource application from the time when the latest uplink timing synchronization point is adjusted does not exceed the specified time threshold, and the target working frequency and the center of the source working frequency point Whether the frequency interval does not exceed the specified frequency threshold; if yes, the UE determines that it maintains uplink synchronization with the eNode B at the target operating frequency; if not, the UE determines that the target and the eNode B are not at the target operating frequency Maintain uplink synchronization at the point.

Manner 2: When the spectrum switching command carries the indication information that the eNode B and the UE maintain the uplink synchronization at the target working frequency point, the UE obtains the eNode B and the UE from the spectrum switching command from the eNode B. Whether to maintain uplink synchronization indication information at the target working frequency point, and use the indication information to determine whether uplink synchronization is maintained between the UE and the eNode B at the target working frequency point.

Step 509: The UE sends the SR by using the stored SR configuration.

It is to be noted that, based on the maximum number of transmissions of the agreed SR, the UE may also send the SR multiple times until the uplink resource for transmitting the spectrum switching complete message is successfully applied or the maximum number of transmissions of the SR is reached, if the UE reaches the maximum transmission of the SR. After the number of times, if the uplink resource is still not received, the existing spectrum switching mode is adopted. Step 510: The eNode B receives the SR from the UE, allocates the uplink resource and the uplink transmission mode to the UE, and uses the uplink resource and the uplink transmission mode as an example to describe the uplink resource and the uplink transmission mode. .

In the embodiment of the present invention, the eNode B may send the allocated uplink resource to the UE through the physical downlink control channel PDCCH at the target working frequency.

Step 511: The UE sends a spectrum switching complete message to the eNode B by using the allocated uplink resource and the uplink sending manner, and notifies the eNode B that the spectrum switching process is successfully completed.

Embodiment 5

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station device. As shown in FIG. 6, the base station device includes:

The management module 11 is configured to maintain the uplink synchronization between the base station device and the terminal device at the source working frequency point before the spectrum switching;

The receiving module 12 is configured to: after the base station device recovers the cell at the target working frequency point, receive an uplink resource request from the terminal device at a target working frequency point, where the uplink resource request is used to apply for an uplink resource, and The uplink resource is used to enable the terminal device to send a spectrum switching complete message for indicating that the terminal device has successfully completed the spectrum switching process; and the allocating module 13 is configured to allocate uplink resources to the terminal device at the target working frequency point. ;

The sending module 14 is configured to send the allocated uplink resource to the terminal device at a target working frequency point.

The management module 11 is further configured to pre-determine a sending manner and a resource of the uplink resource request with the terminal device before the spectrum switching.

The allocating module 13 is further configured to allocate a uplink sending manner to the terminal device at a target working frequency point;

The sending module 14 is further configured to send the allocated uplink on a target working frequency point. The mode is sent to the terminal device.

The management module 11 is further configured to statically specify a sending manner and a resource of the uplink resource request by using the terminal device, or configure a sending mode and a resource of the uplink resource request for the terminal device.

The sending module 14 is further configured to send the sending manner and the resource of the uplink resource request to the terminal device.

The management module 11 is further configured to generate a spectrum switching command when a user authorized to work at the source operating frequency point uses the working frequency point or the channel quality of the source working frequency point decreases.

The sending module 14 is further configured to send the spectrum switching command to the terminal device. The spectrum switching command includes a target working frequency point and/or radio resource configuration information, and a sending manner and a resource of the uplink resource request.

In the LTE system, the method for transmitting the uplink resource request is specifically: sending, by using the scheduling request, the uplink resource request.

The sending module 14 is further configured to send the spectrum switching command to the terminal device, where the spectrum switching command includes a target working frequency point and/or radio resource configuration information, and the base station device and the terminal Whether the device maintains uplink synchronization indication information at the target operating frequency point, and whether the base station device and the terminal device maintain uplink synchronization at the target operating frequency point.

The management module 11 is further configured to determine whether the time length between the time when the terminal device sends the uplink resource application and the time when the latest time adjustment command is sent does not exceed the specified time threshold, and the target working frequency and the source working frequency Whether the center frequency interval of the point is Not exceeding the specified frequency threshold; if yes, determining that the base station device and the terminal device maintain uplink synchronization at the target operating frequency; if not, determining that the base station device and the terminal device are not The uplink synchronization is maintained at the target operating frequency.

The modules of the device of the present invention may be integrated into one or may be deployed separately. The above modules can be combined into one module, or can be further split into multiple sub-modules.

Embodiment 6

Based on the same inventive concept as the above method, the embodiment of the present invention further provides a terminal device. As shown in FIG. 7, the terminal device includes:

The management module 21 is configured to maintain uplink synchronization between the maintenance terminal device and the base station device at a source working frequency point before the spectrum switching;

The determining module 22 is configured to determine, after searching for the target working frequency point, whether the terminal device and the base station device maintain uplink synchronization at the target working frequency point;

The first sending module 23 is configured to: when the determination result is yes, send an uplink resource request to the base station device, where the uplink resource request is used to apply for an uplink resource, and the uplink resource is used to send the terminal device Spectrum switching completion message;

The receiving module 24 is configured to receive, at a target working frequency point, an uplink resource that is allocated by the base station device to the terminal device at a target working frequency point;

The second sending module 25 is configured to send, by using the uplink resource, a spectrum switching complete message for indicating that the terminal device has successfully completed the spectrum switching process, to the base station device.

The receiving module 24 is further configured to receive, at a target working frequency point, an uplink sending manner that is allocated by the base station device to the terminal device at a target working frequency point;

The second sending module 25 is further configured to send a spectrum switching complete message to the base station device by using the uplink resource and the uplink sending manner.

The first sending module 23 is configured to send the uplink resource request to the base station device by using a sending mode and a resource of the uplink resource application. The determining module 22 is specifically configured to determine whether the current time or the time between the time when the terminal device sends the uplink resource request and the time when the uplink timing synchronization point is adjusted last time does not exceed the specified time threshold, and the target working frequency Whether the center frequency interval of the point and the source operating frequency point does not exceed the specified frequency threshold; if yes, determining that the terminal device and the base station device maintain uplink synchronization at the target operating frequency point; if not, determining the The terminal device and the base station device do not maintain uplink synchronization at the target operating frequency; or

Receiving a spectrum switching command from the base station device, when the user authorized to work at the source working frequency point uses the working frequency point or the channel quality of the source operating frequency point decreases, in the spectrum switching command And including indication information of a target working frequency and/or radio resource configuration information, and whether the base station device and the terminal device maintain uplink synchronization at the target operating frequency point; and, by using the spectrum switching command The carried indication information determines whether the terminal device and the base station device maintain uplink synchronization at the target operating frequency point.

The management module 21 is further configured to obtain, by using the following manner, a sending manner and a resource of the uplink resource request: before the spectrum switching, pre-arranging a sending manner and a resource of the uplink resource request with the base station device; or, when authorized Receiving, by the user working at the source working frequency point, a spectrum switching command from the base station device when the working frequency point is used or when the channel quality of the source operating frequency point is decreased, where the spectrum switching command includes a target operation Frequency and/or radio resource configuration information, and the transmission method and resources of the uplink resource application.

The management module 21 is further configured to statically specify a sending manner and a resource of the uplink resource request by using the base station device by using a protocol; or

And receiving, by the base station device, a sending mode and a resource of the uplink resource request, where the sending mode and the resource of the uplink resource request are configured by the base station device. The management module 21 is further configured to pre-agreed with the base station device the maximum number of times the uplink resource application is sent;

The first sending module 23 is configured to send an uplink resource request to the base station device multiple times by using a sending mode and a resource of the uplink resource request, until the terminal device receives the base station device at a target working frequency point. The uplink resource allocated to the terminal device or the maximum number of transmissions is reached.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.

Those skilled in the art can understand that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

claims

1. A spectrum switching method based on a cognitive radio system, characterized in that, before spectrum switching, the base station equipment and the terminal equipment maintain uplink synchronization on the source working frequency point; the method includes:

The base station equipment restores the cell at the target operating frequency point;

The base station equipment receives an uplink resource application from the terminal equipment at the target operating frequency point;

The base station equipment allocates uplink resources to the terminal equipment at the target operating frequency point;

The base station device sends the uplink resource to the terminal device at the target operating frequency point;

The base station device receives from the terminal device a spectrum switching completion message sent by the terminal device using the uplink resource at the target operating frequency point.

2. The method of claim 1, further comprising: the base station device allocating an uplink transmission mode to the terminal device at the target operating frequency point;

The base station equipment sends the uplink transmission mode to the terminal equipment on the target operating frequency point.

3. The method according to claim 1, further comprising: the base station device and the terminal device agreeing on the sending method and resources of the uplink resource application.

4. The method according to claim 3, wherein the base station equipment and the terminal equipment agree on the sending method and resources of the uplink resource application, including:

The base station equipment and the terminal equipment statically specify the sending method and resources of the uplink resource application through a protocol; or, The base station equipment configures the sending method and resources of the uplink resource application for the terminal equipment, and sends the sending method and resources of the uplink resource application to the terminal equipment.

5. The method of claim 1, further comprising:

When a user authorized to work on the source operating frequency wants to use the operating frequency or when the channel quality of the source operating frequency decreases, the base station device generates a spectrum switching command and switches the spectrum Send a switching command to the terminal device;

The spectrum switching command includes: the target operating frequency point and/or the wireless resource configuration information and/or the sending method and resources of the uplink resource application.

6. The method according to any one of claims 3 to 5, characterized in that, in the Long Term Evolution LTE system, the sending method of the uplink resource application includes: the base station device sends the uplink resource through a scheduling request SR Apply.

7. The method of claim 1, further comprising:

The spectrum switching command includes: target operating frequency point and/or wireless resource configuration information, indication information on whether to maintain uplink synchronization between the base station device and the terminal device on the target operating frequency point, and the A method for determining whether uplink synchronization is maintained between the base station equipment and the terminal equipment on the target operating frequency point.

8. The method of claim 7, wherein the method for determining whether uplink synchronization between the base station equipment and the terminal equipment is maintained at the target operating frequency point includes: sending a timing adjustment command from the most recent time Whether the time length between the moments does not exceed the specified time threshold, and whether the interval between the center frequency of the target operating frequency point and the source operating frequency point does not exceed the specified frequency threshold; if so, the base station device determines that it is connected to the specified frequency threshold. terminal equipment maintain uplink synchronization on the target operating frequency point; if not, the base station device determines that uplink synchronization between itself and the terminal device is not maintained on the target operating frequency point.

9. A spectrum switching method based on a cognitive radio system, characterized in that, before spectrum switching, the terminal equipment and the base station equipment maintain uplink synchronization on the source working frequency point; the method includes:

After the terminal device searches for the target operating frequency point, it determines whether uplink synchronization between itself and the base station device is maintained on the target operating frequency point;

If the terminal equipment and the base station equipment maintain uplink synchronization on the target operating frequency point, the terminal equipment sends an uplink resource application to the base station equipment;

The terminal equipment receives the uplink resources allocated by the base station equipment to the terminal equipment on the target operating frequency point at the target operating frequency point;

The terminal equipment uses the uplink resource to send a spectrum switching completion message to the base station equipment.

10. The method of claim 9, wherein the terminal device sending the uplink resource application to the base station device includes:

The terminal equipment sends the uplink resource application to the base station equipment using the sending method and resources of the uplink resource application.

11. The method of claim 10, further comprising: the terminal device receiving, on the target operating frequency point, the uplink transmission allocated by the base station device to the terminal device on the target operating frequency point. Way;

The spectrum switching completion message is sent to the base station device using the uplink resource and the uplink transmission mode.

12. The method of claim 10, wherein the terminal device determines whether uplink synchronization between itself and the base station device is maintained at the target operating frequency point by: the terminal device determines whether the current time or When sending the uplink resource request itself Whether the time length between the moment and the latest uplink timing synchronization point adjustment does not exceed the specified time threshold, and whether the interval between the center frequency of the target operating frequency point and the source operating frequency point does not exceed the specified frequency threshold; if so, then The terminal equipment determines that it and the base station equipment maintain uplink synchronization on the target operating frequency point; if not, the terminal equipment determines that it and the base station equipment do not maintain uplink synchronization on the target operating frequency point; Alternatively, the terminal device uses the indication information carried in the spectrum switching command received from the base station device to determine whether the terminal device and the base station device maintain uplink synchronization on the target operating frequency point.

13. The method of claim 10, further comprising: before spectrum switching, the terminal equipment and the base station equipment agree on the transmission method and resources of the uplink resource application; or,

When a user authorized to work on the source operating frequency wants to use the operating frequency or when the channel quality of the source operating frequency decreases, the terminal device receives a spectrum switching command from the base station device, The spectrum switching command includes the target operating frequency point and/or wireless resource configuration information, as well as the sending method and resources of the uplink resource application.

14. The method of claim 13, wherein the terminal device and the base station device agree on the sending method and resources of the uplink resource application, including:

The terminal equipment and the base station equipment statically specify the sending method and resources of the uplink resource application through a protocol; or,

The terminal equipment receives from the base station equipment the sending method and resources of the uplink resource application configured by the base station equipment.

15. The method according to claim 13, further comprising: the terminal device and the base station device agreeing in advance on the maximum number of sending times of the uplink resource application; the terminal device sending the request to the base station device. The uplink resource application includes: the terminal device sends the uplink resource application to the base station device multiple times until the terminal device The equipment receives the uplink resources allocated by the base station equipment to the terminal equipment at the target operating frequency point or reaches the maximum number of transmissions.

16. A base station equipment, characterized by including:

Management module, used to maintain uplink synchronization between base station equipment and terminal equipment on the source working frequency before spectrum switching;

A receiving module, configured to receive an uplink resource application from the terminal device on the target operating frequency point after the base station equipment restores the cell at the target operating frequency point, and receive the application from the terminal equipment on the target operating frequency point. The device uses the uplink resource to send the spectrum switching completion message;

An allocation module, configured to allocate the uplink resources to the terminal device on the target operating frequency point;

A sending module, configured to send the uplink resource to the terminal device on the target operating frequency point.

17. The base station equipment according to claim 16, characterized in that,

The allocation module is further configured to allocate an uplink transmission mode to the terminal device on the target operating frequency point;

The sending module is further configured to send the uplink sending mode to the terminal device at the target operating frequency point.

18. The base station equipment according to claim 16, characterized in that,

The management module is further configured to agree with the terminal device on the sending method and resources of the uplink resource application before spectrum switching.

19. The base station equipment according to claim 18, characterized in that,

The management module is further configured to statically specify the sending method and resources of the uplink resource application through a protocol with the terminal device, or configure the sending method and resources of the uplink resource application for the terminal device; The sending module is further configured to send the sending method and resources of the uplink resource application to the terminal device.

20. The base station equipment according to claim 16, characterized in that,

The management module is also configured to generate a spectrum switching command when a user authorized to work on the source operating frequency wants to use the operating frequency or when the channel quality of the source operating frequency decreases;

The sending module is further configured to send the spectrum switching command to the terminal device; wherein the spectrum switching command includes the target operating frequency point and/or wireless resource configuration information, and the sending of the uplink resource application. methods and resources.

21. The base station equipment according to any one of claims 18 to 20, wherein in the Long Term Evolution LTE system, the sending method of the uplink resource application includes: sending the uplink resource application through a scheduling request SR.

22. The base station equipment according to claim 16, characterized in that,

The management module further generates a spectrum switching command when a user authorized to work on the source operating frequency wants to use the operating frequency or when the channel quality of the source operating frequency decreases;

The sending module is further configured to send the spectrum switching command to the terminal device;

Wherein, the spectrum switching command includes target operating frequency point and/or wireless resource configuration information, and indication information on whether to maintain uplink synchronization between the base station device and the terminal device on the target operating frequency point, and A method for determining whether uplink synchronization between the base station equipment and the terminal equipment is maintained at the target operating frequency point.

23. The base station equipment according to claim 22, wherein the length of time between the requested time and the most recent time when the timing adjustment command is sent is whether does not exceed the specified time threshold, and whether the interval between the center frequency of the target operating frequency point and the source operating frequency point does not exceed the specified frequency threshold; if so, determine whether the base station equipment and the terminal equipment operate at the target operating frequency Maintain uplink synchronization at the target operating frequency point; if not, it is determined that the base station equipment and the terminal equipment do not maintain uplink synchronization at the target operating frequency point.

24. A terminal device, characterized by: including:

Management module, used to maintain uplink synchronization between terminal equipment and base station equipment on the source working frequency before spectrum switching;

A judgment module, configured to judge whether uplink synchronization between the terminal device and the base station device is maintained on the target working frequency point after searching for the target working frequency point;

The first sending module is configured to send an uplink resource application to the base station device if the terminal device and the base station device maintain synchronization on the target operating frequency point;

A receiving module, configured to receive the uplink resources allocated by the base station equipment to the terminal equipment on the target operating frequency point on the target operating frequency point;

The second sending module is configured to use the uplink resource to send a spectrum switching completion message to the base station equipment.

25. The terminal device according to claim 24, characterized in that,

The first sending module is further configured to send the uplink resource application to the base station equipment by using the sending method and resources of the uplink resource application.

26. The terminal device according to claim 25, characterized in that,

The receiving module is further configured to receive the uplink transmission mode allocated by the base station device to the terminal device at the target operating frequency point at the target operating frequency point;

The second sending module is also configured to send the spectrum switching completion message to the base station device using the uplink resource and the uplink sending mode.

27. The terminal device according to claim 25, characterized in that,

The judgment module is further used to judge the current moment or the time sent by the terminal device. Whether the time length between the time of the uplink resource application and the time of the latest uplink timing synchronization point adjustment does not exceed the specified time threshold, and whether the interval between the center frequencies of the target operating frequency point and the source operating frequency point does not exceed the specified frequency threshold; if yes, determine that the terminal device and the base station device maintain uplink synchronization on the target operating frequency; if no, determine that the terminal device and the base station device do not maintain uplink synchronization on the target operating frequency maintain uplink synchronization on the point; or,

The indication information carried in the spectrum switching command received from the base station device is used to determine whether the terminal device and the base station device maintain uplink synchronization on the target operating frequency point.

28. The terminal equipment according to claim 25, characterized in that,

The management module is further configured to agree with the base station equipment on the sending method and resources of the uplink resource application before spectrum switching; or, when a user authorized to work on the source working frequency point wants to use the When the operating frequency point is reduced or when the channel quality of the source operating frequency point decreases, a spectrum switching command is received from the base station device. The spectrum switching command includes the target operating frequency point and/or wireless resource configuration information, and the The sending method and resources of the above uplink resource application.

29. The terminal equipment according to claim 28, characterized in that,

The management module is further configured to statically specify the sending method and resources of the uplink resource application through a protocol with the base station equipment; or,

The sending method and resources of the uplink resource application configured by the base station device are received from the base station device.

30. The terminal equipment according to claim 28, characterized in that,

The management module is further configured to pre-agree with the base station equipment on the maximum number of transmissions of uplink resource applications;

The first sending module is further configured to use the sending method of the uplink resource application. and resources are sent to the base station device multiple times until the terminal device receives the uplink resource from the base station device or reaches the maximum number of transmissions.