CN106332236B - Method and communication device for improving band support - Google Patents

Method and communication device for improving band support Download PDF

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Publication number
CN106332236B
CN106332236B CN201510381556.4A CN201510381556A CN106332236B CN 106332236 B CN106332236 B CN 106332236B CN 201510381556 A CN201510381556 A CN 201510381556A CN 106332236 B CN106332236 B CN 106332236B
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communication
type
communication service
network
frequency band
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CN201510381556.4A
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Chinese (zh)
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CN106332236A (en
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蔡伟杰
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宏碁股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information

Abstract

The invention discloses a method and a communication device for improving band support, wherein the device comprises a radio frequency signal processing device, a base frequency signal processing device, a memory device and a processor. The radio frequency signal processing device is used for processing a plurality of radio frequency signals to generate a plurality of baseband signals. The base frequency signal processing device is used for processing the base frequency signal. The processor is configured to determine whether the communication device supports at least one frequency band of a first type of communication service supported by a network, and execute a scanning procedure according to a priority order when the communication device does not support the at least one frequency band, wherein the scanning procedure is to scan all frequency bands of the first type of communication service supported by the communication device.

Description

Method and communication device for improving band support

Technical Field

The present invention relates to a wireless communication system, and more particularly, to a method and a communication apparatus for improving band support.

Background

The term "wireless" generally refers to an electronic or electrical operation that does not require the use of "hardwired" connections. "wireless communication" refers to the ability to transmit information over a distance without the use of electrical conductors or wires. The distance may be short, for example several meters for television remote control, or long, for example thousands of kilometres for radio communication. A preferred example of wireless communication is a cellular telephone. Mobile phones may use radio wave enabled (enable) operations so that a user may initiate a phone call to another party from many locations around the world. A mobile phone can be used anywhere as long as there is a base station device that has both transmit and receive signals, where the signals are processed for the mobile phone to send and receive voice and data.

There are many advanced and sophisticated wireless communication technologies. For example, global system for Mobile communications (GSM) is a well-established and widely used communication system that utilizes Time Division Multiple Access (TDMA), which is a digital radio multi-task Access mechanism that can transmit voice, data, and signaling data (e.g., a dialed telephone number) between a Mobile phone and a cell site. CDMA 2000 is a 2.5G/3G hybrid mobile communication standard, which utilizes Code Division Multiple Access (CDMA) technology. Universal Mobile Telecommunications System (UMTS) is a 3G Mobile communication System that provides enhanced coverage over GSM. Wi-Fi (Wireless Fidelity) is a technology defined by the 802.11 engineering standard that can be used in home networks, mobile phones, video games to provide high frequency local area networks (Wireless local area networks). Long Term Evolution (LTE) and Long Term Evolution Advanced (LTE Advanced) are 4G mobile communication systems that can provide high speed data transmission over 2G and 3G systems.

Generally, a Registered Public mobile network (RPLMN) can support multiple frequencies. When a ue is camped (camp on) in a umts network that provides erroneous System Information Blocks (SIBs) 19 for reselection to the lte network, the ue cannot reselect back to the lte network based on the erroneous system information blocks even after attempting to turn on/off the femto mode. More specifically, since the current communication specification describes that when the ue is turned off, the system information of the umts where the ue resides is stored in the registered plmn. However, when the ue is restarted, it still resides in the same cell that provided the wrong system information block. This will cause the ue to use the wrong system information and not reselect back to the lte network.

Therefore, a method and apparatus for improving band support are needed to solve the above problems.

Disclosure of Invention

The invention provides a method and a communication device for improving frequency band support.

According to an aspect of the present invention, a communication device for improving band support is provided. The communication device comprises a radio frequency signal processing device, a baseband signal processing device, a memory device and a processor. The radio frequency signal processing device is used for processing a plurality of radio frequency signals to generate a plurality of baseband signals. The baseband signal processing device processes the plurality of baseband signals. The processor determines whether the communication device supports at least one frequency band of a first type of communication service supported by a network, and executes a scanning procedure according to a priority order when the communication device does not support the at least one frequency band, wherein the scanning procedure is to scan all frequency bands of the first type of communication service supported by the communication device.

In some embodiments, the communication device determines whether the at least one frequency band of the first type of communication service supported by the network exists after scanning all the frequency bands of the first type of communication service supported by the communication device, and transmits an ATTACH (ATTACH) request message to the network requesting to use the first type of communication service via the at least one frequency band when the at least one frequency band is found. In some embodiments, the communication device further receives an attach accept message sent by the network and uses the first type of communication service. In some embodiments, the communication device further receives an attach failure message transmitted by the network and stops executing the scanning procedure. In some embodiments, the communication device further receives an attach failure message transmitted by the network and re-executes the scanning procedure. In some embodiments, the communication device further includes a counter configured to count a number of times of cell reselection when the communication device determines that the at least one frequency band is absent, and the processor re-executes the scanning procedure when the number of times is greater than a threshold. In some embodiments, the communication device further includes a timer, and the processor starts the timer when the communication device determines that the at least one frequency band is absent; and when the timer expires, the processor re-executes the scanning program. In some embodiments, the communication device has a system information block, and the system information block includes a field corresponding to the first type of communication service. In some embodiments, before the determining step, the communication device uses a second type of communication service, and the first type of communication service has a higher priority than the second type of communication service. In some embodiments, the first type of communication service is a long term evolution (lte) service and the second type of communication service is a universal mobile telecommunications system (umts) service.

In accordance with another aspect of the present invention, a method for improving band support in a communication device is provided. The method comprises the following steps: determining whether the communication device supports at least one frequency band of a first type of communication service supported by a network; and when the communication device does not support the at least one frequency band, executing a scanning program according to a priority sequence; the scanning procedure is to scan all frequency bands of the first type of communication service supported by the communication device. In some embodiments, after scanning all frequency bands of the first type of communication service supported by the communication device, determining whether there is the at least one frequency band of the first type of communication service supported by the network; and when the at least one frequency band is found, sending an attach request message to the network requesting use of the first type of communication service via the at least one frequency band. In some embodiments, the method further comprises: receiving an attach accept message transmitted by the network; and using the first type of communication service. In some embodiments, the method further comprises: receiving an attachment failure message transmitted by the network; and stopping executing the scanning program. In some embodiments, the method further comprises: receiving an attachment failure message transmitted by the network; and re-executing the scanning program. In some embodiments, the method further comprises: counting the number of times of cell reselection when the cell does not have the at least one frequency band; and when the times are larger than a critical value, the scanning program is executed again. In some embodiments, the method further comprises: starting a timer when the frequency band does not exist; and re-executing the scanning procedure when the timer expires. In some embodiments, the communication device has a system information block including a field corresponding to the first type of communication service. In some embodiments, before the determining step, the communication device uses a second type of communication service, and the first type of communication service has a higher priority than the second type of communication service. In some embodiments, the first type of communication service is a long term evolution technology service and the second type of communication service is a universal mobile telecommunications system service.

In order to make the aforementioned and other objects, features and advantages of the present disclosure comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a block diagram of a communication device according to an embodiment of the invention.

Fig. 2 is a block diagram of a communication device according to another embodiment of the invention.

Fig. 3 is a block diagram of a communication device according to another embodiment of the invention.

Fig. 4 is a flowchart of a method for improving band support according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

100. 200, 300 communication means;

110. 210, 310 base frequency signal processing device;

120. 220, 320 radio frequency signal processing device;

130. 230, 330 processors;

140. 240, 340 memory devices;

a 250 counter;

360 a timer;

400 method flow diagram;

s405, S410, S415, S420, S425, S430, S435, S440, S445 and S450.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with fig. 1 to 4 are described in detail below. The present specification provides different examples to illustrate the technical features of different implementations. The arrangement of the components in the embodiments is for illustration and not for limitation. And the reference numbers in the embodiments are repeated to simplify the description, and do not indicate any relationship between the different embodiments.

Fig. 1 is a block diagram of a communication device 100 according to an embodiment of the invention. The communication device 100 may be an electronic device for communicating voice and/or transmitting data to a base station, which can communicate with a Network device (e.g., Public Switched Telephone Network (PSTN), Internet, etc.). In the communication system and method described in the present invention, the communication device may be referred to as a User Equipment (UE), an Access Terminal (Access Terminal), a User client (Subscriber Station), a mobile Terminal, a User Terminal, a Subscriber unit, and the like. For example, the Wireless communication device may be a cellular handset, a smart handset, a Personal Digital Assistant (PDA), a notebook computer, a Netbook (Netbook), an electronic reader (e-reader), a Wireless Modem, or the like.

As shown in fig. 1, the communication device 100 may at least include a baseband signal processing device 110, an rf signal processing device 120, a processor 130, a memory device 140, and an antenna module including at least one antenna. It is noted that for purposes of clarity and understanding of the concepts of the present invention, FIG. 1 is a simplified block diagram in which only the components that are relevant to the present invention are shown. However, the present invention is not limited to the embodiment shown in fig. 1.

The rf signal processing device 120 can receive the rf signal through the antenna and process the received rf signal for converting the received rf signal into the baseband signal to be processed by the baseband signal processing device 110, or receive the baseband signal from the baseband signal processing device 110 and convert the received baseband signal into the rf signal to be transmitted to a peer communication device. The peer communication device may be, for example but not limited to, a Base Station (BS), an LTE Base Station (eNode B), an Access Point (AP), or other devices in a wireless network. The rf signal processing device 120 may include a plurality of hardware components for performing rf conversion. For example, the rf signal processing device 120 may include a power amplifier, a mixer, or other components.

The baseband signal processing device 110 can further process the baseband signal to obtain Information or data transmitted by the peer communication device, such as System Information (SI) carried in the radio frequency signal by the peer communication device. The baseband signal processing apparatus 110 may also include a plurality of hardware devices for performing baseband signal processing. The baseband signal processing may include analog-to-digital conversion/digital-to-analog conversion, gain adjustment, modulation/demodulation, encoding/decoding, etc.

The processor 130 can control the operations of the baseband signal processing apparatus 110 and the rf signal processing apparatus 120. According to an embodiment of the present invention, the processor 130 may execute the program code of the software module corresponding to the baseband signal processing apparatus 110 and/or the rf signal processing apparatus 120. When the program code is executed, the program code in combination with certain data in the data structures may also be considered a processor logic unit or a stack entity. Thus, a processor may be considered to include a plurality of processor logic units each configured to perform a given function or task corresponding to one or more software modules. The memory device 140 may store software or firmware program code, system data, user data, etc. for the communication device 100.

According to an embodiment of the present invention, the rf signal processing apparatus 120 and the baseband signal processing apparatus 110 can be regarded as a wireless communication module capable of communicating with a wireless network according to a radio access technology to provide wireless communication services. It is noted that, in some embodiments, the wireless communication device 100 may be further extended to include more than one antenna or more than one wireless communication module, and thus the present invention is not limited to the embodiment shown in fig. 1.

In addition, in some embodiments of the present invention, the processor may also be disposed in the baseband signal processing apparatus 110, or the wireless communication apparatus 100 may further include another processor disposed in the baseband signal processing apparatus 110. The present invention is not limited to the architecture shown in fig. 1.

Fig. 2 is a block diagram of a communication device 200 according to another embodiment of the invention. According to an embodiment of the present invention, the communication device 200 may include a baseband signal processing device 210, an rf signal processing device 220, a processor 230, a memory device 240, a counter 250, and an antenna module including at least one antenna. In order to simplify the description of the inventive concept, only a simplified block diagram is shown in fig. 2, in which only the components relevant to the embodiments of the invention are shown. It should be noted, however, that the present invention is not limited to the embodiment shown in FIG. 2.

The baseband signal processing device 210, the rf signal processing device 220, the processor 230, and the memory device 240 in the communication device 200 operate similarly to the baseband signal processing device 110, the rf signal processing device 120, the processor 130, and the memory device 140 in the communication device 100. Therefore, for the description of similar parts, reference may be made to fig. 1, which will not be described further herein for the sake of brevity. In one embodiment, counter 250 is configured to count a number of times. The processor 230 may be configured to execute a corresponding program when the number of times counted by the counter 250 exceeds a threshold value.

Fig. 3 is a block diagram of a communication device 300 according to another embodiment of the invention. According to an embodiment of the present invention, the communication device 300 may include a baseband signal processing device 310, an rf signal processing device 320, a processor 330, a memory device 340, a timer 360, and an antenna module including at least one antenna. In order to simplify the description of the inventive concept, only a simplified block diagram is shown in fig. 3, in which only the components relevant to the embodiments of the invention are shown. It should be noted, however, that the present invention is not limited to the embodiment shown in FIG. 3.

The baseband signal processing device 310, the rf signal processing device 320, the processor 330 and the memory device 340 in the communication device 300 operate similarly to the baseband signal processing device 110, the rf signal processing device 120, the processor 130 and the memory device 140 in the communication device 100. Therefore, for the description of similar parts, reference may be made to fig. 1, which will not be described further herein for the sake of brevity. In an embodiment, the processor 330 may start the timer 360. When the timer expires, the processor executes a corresponding program.

Fig. 4 is a flowchart 400 illustrating a method for improving band support according to an embodiment of the invention, and referring to fig. 1-3. In this embodiment, it is assumed that the communication device can support two types of communication services, wherein the first type of communication service is a Long Term Evolution (LTE) service, and the second type of communication service is a Universal Mobile Telecommunications System (UMTS) service. It is further assumed that the priority of the first kind of communication service is higher than the priority of the second kind of communication service. It is noted that the communication device is currently resident (camp on) in the cell using the second type of communication service.

First, in step S405, the processor determines that the communication device has a System Information Block (SIB) including a field corresponding to the first type of communication service (i.e., the communication device supports the first type of communication service), and determines that the first type of communication service has a higher priority than the second type of communication service. In step S410, the processor determines whether the communication device supports at least one frequency band of a first type of communication service supported by the network. When the processor determines that the communication device supports at least one frequency band of the first type of communication service supported by the network, a cell selection procedure is performed in step S415 by using the at least one frequency band.

On the other hand, when the processor determines that the communication device does not support at least one frequency band of the first type of communication service supported by the network, in step S420, a scanning procedure is performed according to a priority order, wherein the scanning procedure includes scanning all frequency bands of the first type of communication service supported by the communication device.

Next, after scanning all bands of the first type communication service supported by the communication device, in step S425, the processor determines whether there is at least one band of the first type communication service supported by the network. When it is determined that there is at least one frequency band supporting the first type of communication service, in step S430, the processor transmits an ATTACH (ATTACH) request message to the network requesting to use the first type of communication service via the at least one frequency band. In step S435, the processor determines whether to receive an attach accept message sent by the network. When the processor determines that the attach accept message transmitted by the network has been received, in step S440, the first type communication service is used.

Otherwise, when the processor determines that an attachment acceptance message transmitted from the network is not received, instead of receiving an attachment failure message, in step S445, the scanning procedure is re-executed or stopped. To illustrate in more detail, the processor may receive this attachment failure information for two cases. In the first case, when the processor determines that the communication device does not provide the related first type of communication service (e.g., the user using the communication device does not apply the carrier for the first type of communication service), the processor may stop executing the scanning procedure to avoid power consumption caused by re-executing the scanning procedure. In another case, when the processor determines that the network is congested or other network problems occur, the processor may re-execute the scanning procedure to re-scan the available frequency band.

Returning to step S425, when the processor determines that the processor does not have at least one frequency band of the first type of communication service supported by the network, in step S450, if the communication device has the counter of fig. 2, the counter counts the number of times the processor performs a cell reselection. When the number of times is larger than a threshold value, the processor executes the scanning program again. Alternatively, in step S450, if the communication device has the timer in fig. 3, the processor starts the timer. When the timer expires, the processor re-executes the scanning procedure.

According to the method and the flow, the frequency band of the first type communication service with higher priority can be effectively found, the battery power consumption of the communication device can be effectively saved, and the wrong system information provided by the cell can be avoided.

The above embodiments are described using various angles. It should be apparent that the teachings herein may be presented in a variety of forms and that any specific architecture or functionality disclosed in the examples is merely representative. In light of the teachings herein, it should be understood by those skilled in the art that the teachings herein may be variously presented in other specific forms or combinations of forms. By way of example, this may be accomplished by an apparatus or a method in accordance with any of the manners set forth above. An implementation of a device or performance of a mode may be implemented in any other architecture or functionality or both that implement one or more of the above-discussed versions.

Those of skill in the art would understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by volts, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

Those of skill would further appreciate that the various illustrative logical blocks, modules, processors, means, circuits, and algorithm steps described in connection with the aspects disclosed herein may be implemented as electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two, in source code or other technical design), various forms of program or design code directed to a link (referred to herein, for convenience, as "software" or a "software module"), or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is presented as hardware or software, it will depend upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Moreover, various illustrative logical blocks, modules, and circuits may be implemented in Integrated Circuits (ICs), access terminals, access points, and the like; or by an integrated circuit, an access terminal, an access point. An integrated circuit may be designed by a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, electronic components, optical components, mechanical components, or any combination thereof to perform the functions described herein; and may execute execution code or instructions that reside within the integrated circuit, external to the integrated circuit, or both. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may be constituted by a combination of computer devices, for example: a combination of a Digital Signal Processor (DSP) and a microcomputer, a plurality of sets of microcomputers, one to a plurality of sets of microcomputers and a digital signal processor core, or any other similar configuration.

Any particular order or hierarchy of steps for processes disclosed herein is purely exemplary. Based upon design preferences, it should be understood that any specific order or hierarchy of steps in the processes may be rearranged within the scope of the disclosure. The accompanying method claims present elements of the various steps in a sample order, and are therefore not to be limited to the specific order or hierarchy presented.

The use of ordinal terms such as "first," "second," "third," etc., in the claims to modify a component does not by itself connote any priority, precedence, or order of steps performed by the method, but are used merely as labels to distinguish one component from another component having the same name (but with a different ordinal term).

Although the present disclosure has been described with reference to exemplary embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the disclosure, and therefore, the scope of the disclosure should be limited only by the appended claims.

Claims (18)

1. A communication device for boosting band support, the communication device comprising:
a radio frequency signal processing device for processing a plurality of radio frequency signals to generate a plurality of baseband signals;
a baseband signal processing device for processing the plurality of baseband signals;
a memory device; and
a processor configured to determine whether the communication device supports at least one frequency band of a first type of communication service supported by a network when the communication device is residing in a cell using a second type of communication service, and perform a scanning procedure according to a priority order when the communication device does not support the at least one frequency band, wherein the first type of communication service has a higher priority than the second type of communication service;
wherein the scanning procedure is to scan all frequency bands of the first type of communication service supported by the communication device.
2. The communication device as claimed in claim 1, wherein the communication device determines whether there is the at least one frequency band of the first type of communication service supported by the network after scanning all frequency bands of the first type of communication service supported by the communication device, and transmits an attach request message to the network requesting to use the first type of communication service via the at least one frequency band when the at least one frequency band is found.
3. The communication device for improving band support according to claim 2, wherein the communication device further receives an attach accept message transmitted by the network and uses the first type communication service.
4. The communication device of claim 2, wherein the communication device further receives an attach failure message sent by the network and stops performing the scanning procedure.
5. The communication device of claim 2, wherein the communication device further receives an attach failure message transmitted by the network, and re-performs the scanning procedure.
6. The communications apparatus for boosted band support of claim 2, further comprising:
a counter for counting the number of cell reselections when the communication device determines that the communication device does not have the at least one frequency band, and the processor re-executes the scanning procedure when the number is greater than a threshold value.
7. The communications apparatus for boosted band support of claim 2, further comprising:
a timer, which is started by the processor when the communication device judges that the communication device does not have the at least one frequency band; and when the timer expires, the processor re-executes the scanning program.
8. The communications device for boosted band support according to claim 1, wherein the communications device has a system information block including a field corresponding to the first type of communication service.
9. The communications device of claim 1, wherein the first type of communications service is a Long Term Evolution (LTE) service and the second type of communications service is a Universal Mobile Telecommunications System (UMTS) service.
10. A method for boosting band support for use in a communication device, the method comprising:
determining whether the communication device supports at least one frequency band of a first type of communication service supported by a network while the communication device is residing in a cell using a second type of communication service; and
when the communication device does not support the at least one frequency band, executing a scanning procedure according to a priority sequence, wherein the priority of the first kind of communication service is higher than the priority of the second kind of communication service;
wherein the scanning procedure is to scan all frequency bands of the first type of communication service supported by the communication device.
11. The method for boosted band support of claim 10 further comprising:
after scanning all frequency bands of the first type of communication service supported by the communication device, determining whether there is the at least one frequency band of the first type of communication service supported by the network; and
when the at least one frequency band is found, an attach request message is sent to the network requesting use of the first type of communication service via the at least one frequency band.
12. The method for boosting band support according to claim 11, further comprising:
receiving an attach accept message transmitted by the network; and
using the first type of communication service.
13. The method for boosting band support according to claim 11, further comprising:
receiving an attachment failure message transmitted by the network; and
stopping executing the scanning program.
14. The method for boosting band support according to claim 11, further comprising:
receiving an attachment failure message transmitted by the network; and
and re-executing the scanning program.
15. The method for boosting band support according to claim 11, further comprising:
counting the number of times of cell reselection when the cell does not have the at least one frequency band; and
and when the times are larger than a critical value, the scanning program is executed again.
16. The method for boosting band support according to claim 11, further comprising:
starting a timer when the frequency band does not exist; and
when the timer expires, the scanning procedure is re-executed.
17. The method for improving band support according to claim 10, wherein said communication device has a system information block, said system information block comprising a field corresponding to said first type of communication service.
18. The method of claim 10, wherein the first type of communication service is a Long Term Evolution (LTE) service and the second type of communication service is a Universal Mobile Telecommunications System (UMTS) service.
CN201510381556.4A 2015-07-02 2015-07-02 Method and communication device for improving band support CN106332236B (en)

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