WO2015103942A1 - 信道切换方法及装置 - Google Patents

信道切换方法及装置 Download PDF

Info

Publication number
WO2015103942A1
WO2015103942A1 PCT/CN2014/096074 CN2014096074W WO2015103942A1 WO 2015103942 A1 WO2015103942 A1 WO 2015103942A1 CN 2014096074 W CN2014096074 W CN 2014096074W WO 2015103942 A1 WO2015103942 A1 WO 2015103942A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
access point
switching
user equipment
mimo
Prior art date
Application number
PCT/CN2014/096074
Other languages
English (en)
French (fr)
Inventor
姚文峰
汪再先
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2015103942A1 publication Critical patent/WO2015103942A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel switching method and apparatus.
  • the data transmission rate may be difficult to meet the requirements of the user due to the deterioration of the channel environment, for applications that are sensitive to the transmission rate (for example, For Wifi Direct), it is necessary to replace the better channel in the environment to meet the user's rate requirements.
  • the user can negotiate with the access point to perform channel switching. Specifically, after receiving the handover request of the user equipment, the access point performs channel switching according to a preset scheme, and after completing the channel switching, the access point reconnects with the user equipment.
  • the access point since the data transmission service cannot be provided for the user equipment during the channel switching process of the access point, in order to wait for the access point to complete the channel switching, the user equipment first needs to be disconnected from the access point. The user equipment can be re-established with the access point after the channel switching of the access point is completed. Therefore, since the channel switching takes a long time and the user equipment cannot perform data transmission within the time, there is a problem that the user experience is not good.
  • Embodiments of the present invention provide a channel switching method and apparatus, which prevent channel switching from taking too long and improve user experience.
  • a first aspect of the present invention provides a channel switching method, including the following steps: When the channel switching is required, the first channel of the access point supporting the multiple input multiple output MIMO is connected with the user equipment, where the MIMO-enabled access point includes at least two channels, one of which is a channel Determining a first channel; determining a switching channel from the channel of the MIMO-enabled access point; switching the connection of the MIMO-enabled access point to the user equipment to the switching channel.
  • the determining is performed from a channel of the MIMO-enabled access point.
  • the switching channel includes: receiving, by the first channel of the MIMO-enabled access point, a channel switching command of the user equipment, and sending the channel switching command to any channel of the MIMO-enabled access point, where The frequency of any channel of the MIMO-enabled access point is different from the frequency of the first channel of the MIMO-enabled access point; an acknowledgement message of any channel that receives the MIMO-enabled access point Then, any channel of the MIMO-enabled access point is used as the switching channel.
  • the method further includes: the first of the MIMO-enabled access point The channel channel forwards the completed channel switching completion message of the switching channel to the user equipment.
  • the MIMO-supporting The switching of the connection between the access point and the user equipment to the switching channel specifically includes: pre-authenticating between the user equipment and the switching channel by using a first channel of the MIMO-enabled access point; After the pre-authentication is completed, the connection between the MIMO-enabled access point and the user equipment is switched to the switching channel.
  • the method further includes: cutting off the The connection of the first channel of the access point supporting multiple input multiple output MIMO to the user equipment.
  • the user equipment when the user equipment is a user equipment supporting MIMO, the first channel and the user of the access point that supports multiple input multiple output MIMO
  • the device is connected to be connected to: the first channel that supports the MIMO access point is connected to the first channel of the user equipment; and the method further includes: the access point that supports the multiple input multiple output MIMO The two channels are connected to the second channel of the user equipment.
  • the determining the switching channel from the channel of the MIMO-enabled access point includes: determining a second channel of the MIMO-enabled access point as the switching channel.
  • the switching of the connection between the access point and the user equipment to the switching channel specifically includes: the switching channel receiving a channel switching request of the second channel of the user equipment; cutting off the supporting MIMO according to the channel switching request
  • the second channel of the access point is connected to the second channel of the user equipment; the second channel of the access point supporting the MIMO, the second channel of the user equipment,
  • the connection of the MIMO-enabled access point to the user equipment is switched to the switching channel.
  • the second channel of the user equipment, the switching of the connection between the MIMO-enabled access point and the user equipment to the switching channel includes: the switching channel receiving a connection request of the user equipment; Sending a connection confirmation message to the second channel of the user equipment by using the second channel of the MIMO-enabled access point; after receiving the connection confirmation message, the second channel of the user equipment The connection of the MIMO-enabled access point to the user equipment is switched to the switching channel.
  • a channel switching apparatus which is installed on an access point.
  • the method includes: a connection holding unit that keeps a connection between a first channel of an access point supporting multiple input multiple output MIMO and a user equipment when channel switching is required, where the MIMO-enabled access point includes at least two channels One of the channels is the first channel; the channel determining unit is connected to the connection holding unit, and determines a switching channel from the channel of the MIMO-enabled access point; the channel switching unit is determined with the channel The unit is connected to switch the connection between the MIMO-enabled access point and the user equipment to the switching channel.
  • the channel determining unit includes: a handover command sending module,
  • the first channel of the MIMO-enabled access point receives the channel switching command of the user equipment, and sends the channel switching command to any channel of the MIMO-enabled access point, where the MIMO connection is supported.
  • the frequency of any channel of the ingress point is different from the frequency of the first channel of the access point supporting the MIMO;
  • the switching channel determining module is connected to the switching command sending module, and receives the access supporting the MIMO After the acknowledgment message of any channel of the point, any channel of the MIMO-enabled access point is used as the switching channel.
  • the channel determining unit further includes: a handover completion message forwarding module, The switching channel determining module is connected, so that the first channel of the MIMO-enabled access point forwards the completed channel switching completion message of the switching channel to the user equipment.
  • the channel switching unit includes The authentication module performs pre-authentication between the user equipment and the switching channel by using the first channel of the MIMO-enabled access point; the first switching module is connected to the pre-authentication module, and the After the pre-authentication, the connection between the MIMO-enabled access point and the user equipment is switched to the switching channel.
  • the device further includes: a first cutting module, and the pre-authentication module And connecting, after completing the pre-authentication, disconnecting the first channel of the access point supporting the multiple input multiple output MIMO from the user equipment.
  • the connection holding unit includes: a holding module, where the MIMO-enabled access point is first The channel is connected to the first channel of the user equipment; the device further includes: a connecting unit, connected to the connection holding unit, and the second channel and the user of the access point supporting multiple input multiple output MIMO The second channel of the device is connected.
  • the channel determining unit includes: a channel determining module, connected to the holding module And determining, by the second channel of the MIMO-enabled access point, the switching channel.
  • the channel switching unit includes: a handover request receiving module, Connected to the channel determining unit, the switching channel receives a channel switching request of the second channel of the user equipment; the second cutting module is connected to the switching request receiving module, and cuts off according to the channel switching request a second channel that supports the MIMO access point and a second channel of the user equipment; a second switching module that is connected to the second disconnecting module, and the first MIMO-enabled access point The second channel, the second channel of the user equipment, switches the connection between the MIMO-enabled access point and the user equipment to the switching channel.
  • the second switching module includes: a connection request receiving part, to enable the switching Receiving, by the channel, a connection request of the user equipment; confirming a message sending part, and causing the switching channel to pass through the second channel of the MIMO-enabled access point
  • the second channel of the user equipment sends a connection confirmation message; the connection switching unit, after receiving the connection confirmation message on the second channel of the user equipment, the MIMO-enabled access point and the user equipment The connection is switched to the switching channel.
  • the channel switching method and device provided by the embodiment of the present invention can divide the multiple input multiple output channel in the access point supporting the multiple input multiple output scheme into multiple single input single output channels, thereby being capable of passing at least one single input single
  • the output channel maintains a connection between the user equipment and the access point, and performs channel switching by using other single-input single-output channels in the access point, thereby being disconnected from the user equipment while channel switching is performed on other single-input single-output channels.
  • the connection is opened, the user equipment and the access point can still maintain communication by using the at least one single-input single-output channel, thereby avoiding the problem that the channel switching in the prior art takes too long, and improving the user experience.
  • FIG. 1 is a schematic flowchart of a channel switching method provided by the present invention
  • FIG. 2 is a specific flowchart of the channel switching method shown in FIG. 1;
  • FIG. 3 is a specific flowchart of the channel switching method shown in FIG. 2;
  • FIG. 4 is a specific flowchart of the channel switching method shown in FIG. 2 or 3;
  • FIG. 5 is a specific flowchart of the channel switching method shown in FIG. 4; FIG.
  • FIG. 6 is a specific flowchart of the channel switching method shown in FIG. 1;
  • FIG. 7 is a specific flowchart of the channel switching method shown in FIG. 6;
  • FIG. 8 is a specific flowchart of the channel switching method shown in FIG. 6 or 7;
  • FIG. 9 is a specific flowchart of the channel switching method shown in FIG. 8.
  • FIG. 10 is a structural block diagram of a channel switching apparatus according to the present invention.
  • FIG. 11 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 10;
  • FIG. 12 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 11;
  • FIG. 13 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 11 or 12; FIG.
  • FIG. 14 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 13; FIG.
  • FIG. 15 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 10;
  • Figure 16 is a block diagram showing a specific structure of the channel switching device shown in Figure 15;
  • FIG. 17 is a block diagram showing a specific structure of the channel switching apparatus shown in FIG. 15 or 16;
  • FIG. 18 is a block diagram showing a specific structure of the channel switching device shown in FIG. 17;
  • 19 is a schematic diagram of channel division of an access point
  • 20 is a schematic diagram showing the completion of channel switching in the first embodiment of the present invention.
  • 21 is a schematic diagram showing completion of channel switching according to the first embodiment of the present invention.
  • FIG. 22 is a schematic diagram showing the completion of channel switching according to the second embodiment of the present invention.
  • Fig. 23 is a schematic diagram showing the completion of channel switching in the second embodiment of the present invention.
  • an embodiment of the present invention provides a channel switching method.
  • the track switching method provided by the embodiment of the present invention is described in detail below through a specific embodiment.
  • the channel switching method provided in this embodiment includes the following steps.
  • Step 11 When the channel switching needs to be performed, the first channel of the access point supporting the multiple input multiple output MIMO is connected with the user equipment, where the MIMO-enabled access point includes at least two channels, where One channel is the first channel.
  • Whether the channel switching needs to be performed may be determined by the user. For example, when the user is using the user equipment to perform data interaction service with the access point, if the current data interaction speed is considered to be slow, the channel switching button may be clicked. The way to reflect the need to perform channel switching at this time. Certainly, the above-mentioned examples of the need for the channel switching are only for the sake of understanding. The embodiment of the present invention is not limited thereto.
  • the user equipment can automatically determine that No channel switching is required. For example, if the current channel rate is less than a preset threshold in the user equipment, a message is automatically sent to the access point to reflect the intent to perform channel switching at this time.
  • an access point supporting multiple input multiple output MIMO supports a multiple input multiple output MIMO scheme having at least two inputs and at least two outputs, for example, three in two out MIMO, three in three out MIMO, and the like.
  • the access point supporting the multiple input multiple output MIMO since the access point supporting the multiple input multiple output MIMO has at least two inputs and at least two outputs, it is possible to constitute two or more multiplex channels, and the user equipment remains connected to one of the channels.
  • the access point supports two-input and two-out MIMO, and defines them as input 1, input 2, output 1 and output 2, respectively, input 1 and output 1 can form one channel, and input 2 And output 2 can form another channel.
  • the first channel of the access point is the channel formed by input 1 and output 1, or the channel formed by input 2 and output 2.
  • the multiple input multiple output MIMO is two-input and two-out
  • the present invention is not limited thereto.
  • it may also be three-input and two-out MIMO.
  • the input is 1 ⁇
  • Any two of the three can form a channel with the outputs 1, 2, and there will be an input that is idle because there is no output matching it.
  • Step 12 Determine a switching channel from the channel of the MIMO-enabled access point.
  • the channel is determined from the channel of the access point.
  • the step 12 when the user equipment is a user equipment supporting only a single input and single output SISO, the step 12 includes the following steps 121 and 122.
  • the single-input single-output SISO is a scheme with only one input and one output.
  • only one channel for data interaction can be formed.
  • Step 121 The first channel of the MIMO-enabled access point receives the user a channel switching command of the device, and sending the channel switching command to any channel of the MIMO-enabled access point, where a frequency of any channel of the MIMO-enabled access point is different from the MIMO-supporting The frequency of the first channel of the access point.
  • the user equipment may automatically send a channel switching command by the user manually or by itself.
  • a channel of the access point receives the channel switching command to be a frequency different from the channel to which the user equipment is connected. For example, if the frequency of the channel currently connected by the user equipment is 2.4 GHz, the channel for transmitting the channel switching command is sent. Instead of 2.4GHz, use other frequencies.
  • Step 122 After receiving the acknowledgement message of any channel of the MIMO-enabled access point, use any channel of the MIMO-enabled access point as the switching channel.
  • any channel of the access point is regarded as Switch channels.
  • step 12 when the user equipment is a user equipment that supports only single-input single-output SISO, step 12 further includes:
  • Step 123 The first channel of the MIMO-enabled access point forwards the channel switch completion message that the handover channel has completed to the user equipment.
  • the message indicating that the switching channel has been completed may be sent through the first channel connected to the user equipment. Give the user device.
  • step 13 the connection between the MIMO-enabled access point and the user equipment is switched to the switching channel.
  • the step 13 may include the following steps 131 and 132.
  • Step 131 Perform pre-authentication between the user equipment and the switching channel by using the first channel of the MIMO-enabled access point.
  • pre-authentication between the user equipment and the switching channel means that the user equipment is Advance authentication between channels to be switched, thereby further reducing the time taken to switch channels.
  • Step 132 After completing the pre-authentication, switch the connection between the MIMO-enabled access point and the user equipment to the switching channel.
  • the connection of the user equipment can be directly switched to the switching channel.
  • step 133 may be added.
  • Step 133 cutting off the connection between the first channel of the access point supporting the multiple input multiple output MIMO and the user equipment.
  • the channel switching method provided by the embodiment of the present invention can divide the multiple input multiple output channel in the access point supporting the multiple input multiple output scheme into multiple single input single output channels, thereby being capable of passing at least one single input single output channel. Maintaining the connection between the user equipment and the access point, and using other single-input single-output channels in the access point for channel switching, thereby disconnecting from the user equipment while performing channel switching on other single-input single-output channels. The user equipment and the access point can still maintain communication by using the at least one single-input single-output channel, so as to avoid the problem that the channel switching in the prior art takes too long, and the user experience is improved.
  • the user equipment is a user equipment that only supports SISO.
  • the user equipment only supports single-input single-output SISO, with a SISO channel consisting of one input and one output.
  • the user equipment is a user equipment having one SISO channel.
  • the access point supports multiple input multiple output MIMO. Specifically, it has dual inputs of inputs 1 and 2, and dual outputs of outputs 1 and 2.
  • the access point divides the multiple input multiple output MIMO into multiple single input multiple output SISO. Specifically, as shown, input 1 and output 1 form a first path SISO1, and input 2 and output 2 constitute a second path SISO2.
  • the user equipment is connected to the input and output of a certain SISO channel of the access point.
  • the user equipment is connected to the first path SISO1 of the access point.
  • data interaction can be realized through the first path SISO1.
  • the transmission rate between the user equipment and the access point may deteriorate.
  • the user can click on the channel switch button on the user equipment to cause the channel switch command to be sent to the first path SISO1 of the access point via the output of the user equipment and the input of the SISO1 of the access point.
  • the first channel SISO1 forwards it to the second channel SISO2 in the access point through internal communication.
  • the second channel SISO2 performs channel switching so that the frequency after switching is different from the frequency of the first channel.
  • the frequency of the channel of the second channel SISO2 can be switched to a frequency of 2.4835 GHz. It can be understood that the frequency switching mode is only an example for ease of understanding, and the frequency switching can be performed by other methods.
  • the user sets the frequency scanning interval according to his own needs and saves it in the configuration file of the user equipment, so that when the channel is switched, the information is sent to the access point according to the frequency scanning interval preset by the user. Scan the channel and switch to the channel obtained by the scan.
  • the message that the channel switching is completed is sent to the first channel SISO1 through internal communication.
  • the first channel SISO1 forwards the message of the channel switching completion to the user equipment by communication with the SISO of the user equipment.
  • the user equipment After receiving the message that the channel switching is completed, the user equipment sends a pre-authentication request to the access point through the first path SISO1. After receiving the pre-authentication request, the first channel SISO1 forwards the pre-authentication request to the second channel SISO2 through internal communication. Thereby, pre-authentication between the user equipment and the second path SISO2 is completed via the first path SISO1.
  • the user equipment After the foregoing pre-authentication is completed, the user equipment sends a disconnect request to the first path SISO1 of the access point to disconnect the connection between the two. An association request is then sent to the second channel SISO2 to connect with the second channel SISO2 that switches the channel.
  • the second channel SISO2 of the access point can establish a connection with the channel SISO of the user equipment.
  • the user first sets the rate threshold according to the theoretical transmission rate and the actual working demand rate, and saves the rate threshold in the configuration file of the user equipment. After the user equipment is connected to the second channel SISO2 of the access point, it is determined whether the current transmission rate meets the rate threshold value saved in the configuration file. In the case that the current transmission rate meets the rate threshold, it is considered that the rate after the connection satisfies the user's demand.
  • the user equipment keeps connected with the second channel SISO2 of the access point, and passes the The two-way channel SISO2 sends a channel switching command to the first channel SISO1 of the access point in an internal communication manner.
  • the first channel SISO1 After receiving the channel switching command, the first channel SISO1 performs channel switching so that the frequency after switching is different from the frequency of the first channel.
  • channel switching can be repeated between the two channels of the access point until the transmission rate meets the rate threshold.
  • the manner of confirming whether the rate after the connection meets the user's needs is not limited to the above manner, for example, the entire working frequency band can be scanned, and During the scanning of the working frequency band, the user equipment maintains a configuration file all the time, and each time it connects to a new working frequency, the speed is measured, and the connection rate and its corresponding working frequency are saved in the configuration file. If the frequency whose rate is greater than the rate threshold is not found after scanning the entire working frequency band, the channel of the frequency corresponding to the maximum connection rate saved by the configuration file is selected to ensure that the transmission rate at this time is currently all. The fastest of the channels.
  • the user equipment can be the same as the access point, and is a user equipment supporting multiple input multiple output MIMO.
  • the step 11 is specifically as follows.
  • Step 111 Keep a first channel of the MIMO-enabled access point and a first channel of the user equipment.
  • both the access point and the user equipment support multiple input and multiple output MIMO, two or more channels can be separately configured.
  • the first channel of the MIMO access point can be used with the user.
  • the first channel of the device remains connected.
  • the method further includes a step 112 of connecting a second channel of the access point supporting the multiple input multiple output MIMO with the second channel of the user equipment.
  • the channels other than the first channel are connected to each other.
  • step 12 can include step 121'.
  • Step 121' determining the second channel of the MIMO-enabled access point as the switching channel.
  • the second channel of the access point connected to the second channel of the user equipment is used as the switching channel.
  • the step 13 specifically includes the following steps.
  • Step 131' the switching channel receives a channel switching request of the second channel of the user equipment.
  • the switching channel since the switching channel is connected to the user equipment, it can be directly connected. Receive a channel switch request from the user equipment.
  • Step 132 ′ disconnecting the second channel of the MIMO-enabled access point from the second channel of the user equipment according to the channel switching request.
  • the connection of the second channel of the access point to the user equipment is cut off.
  • the second channel of the access point performs channel switching.
  • Step 133 ′ switching the connection between the MIMO-enabled access point and the user equipment to the handover by using the second channel of the MIMO-enabled access point and the second channel of the user equipment. On the channel.
  • the channel switching message of the second channel can be sent to the user equipment by using the first channel of the MIMO-enabled access point, so that the second channel of the user equipment can also send a reconnection to the access point. Requesting to switch the connection of the MIMO-enabled access point to the user equipment to the switching channel.
  • said step 133' comprises the following steps.
  • Step 1331' the switching channel receives a connection request of the user equipment.
  • the switching channel may receive a connection request of the user equipment via a first channel or the like connected by the user equipment to the access point thereof.
  • Step 1332' the switching channel sends a connection confirmation message to the second channel of the user equipment by using the second channel of the MIMO-enabled access point.
  • the switching channel After receiving the connection request of the user equipment, the switching channel can send a connection confirmation message indicating that the connection can be made to the first channel of the user equipment through the first channel of the access point. Thereafter, the first channel of the user equipment can be sent to the second channel of the user equipment by means of internal information transmission in the user equipment.
  • Step 1333' after the second channel of the user equipment receives the connection confirmation message, switch the connection between the MIMO-enabled access point and the user equipment to the switching channel.
  • the second channel of the user equipment is The connection information can be sent to the access point, so that the switching channel of the access point is reconnected with the user equipment.
  • the channel switching method provided by the embodiment of the present invention can divide the multiple input multiple output channel in the access point supporting the multiple input multiple output scheme into multiple single input single output channels, thereby being capable of passing at least one single input single output channel. Maintaining the connection between the user equipment and the access point, and using other single-input single-output channels in the access point for channel switching, thereby disconnecting from the user equipment while performing channel switching on other single-input single-output channels. The user equipment and the access point can still maintain communication by using the at least one single-input single-output channel, so as to avoid the problem that the channel switching in the prior art takes too long, and the user experience is improved.
  • the user equipment is a user equipment supporting MIMO in a specific embodiment.
  • the user equipment supports multiple input multiple output MIMO, dual input with input 1 and input 2, and dual output with output 1 and output 2.
  • the user equipment is divided into multiple single-input multiple-output SISO, specifically, input 1 and output 1 constitute the first channel S-SISO1, and input 2 and output 2 constitute the second channel S -SISO2.
  • the access point supports multiple input multiple output MIMO, specifically, it has dual inputs of input 1 and input 2, and dual outputs of output 1 and output 2.
  • the access point divides the multiple input multiple output MIMO into multiple single input multiple output SISO. Specifically, as shown, input 1 and output 1 form the first path AP-SISO1, and input 2 and output 2 form the second path AP-SISO2.
  • the first channel S-SISO1 of the user equipment is connected to the first channel AP-SISO1 of the access point, and the second channel S-SISO2 of the user equipment and the second channel AP of the access point are connected. -SISO2 connection.
  • the user equipment and the access point can implement data interaction through the two channels.
  • the transmission rate between the user equipment and the access point may deteriorate.
  • the user can click on the channel switch button on the user device.
  • the first channel S-SISO1 of the user equipment is kept connected to the first channel AP-SISO1 of the access point, because in this embodiment, the access point is only except the first channel AP-SISO1.
  • the second path AP-SISO2 is determined as the switching channel for switching.
  • the user equipment may designate a certain channel as the switching channel, or may be selected by the access point.
  • Other processing methods are the same as those of the foregoing embodiment, and are not described herein again.
  • the channel switching command is sent to the second channel AP-SISO2 of the access point via the second channel S-SISO2 of the user equipment.
  • the second channel AP-SISO2 disconnects the connection with the second channel S-SISO2 of the user equipment, and performs channel switching, so that the frequency after switching is different from the first channel.
  • the frequency of the channel is the same as that of the above embodiment, and details are not described herein again.
  • the message S whose channel switching is completed is sent to the first channel AP-SISO1 through internal communication.
  • the first channel AP-SISO1 forwards the channel switching completed message S to the user equipment through communication with the first channel S-SISO1 of the user equipment.
  • the user equipment sends an association request to the second channel AP-SISO2 of the access point through the second channel S-SISO2 to connect with the second channel AP-SISO2 that switches the channel.
  • the second channel AP-SISO2 of the access point After the second channel AP-SISO2 of the access point receives the association request from the user equipment, the second channel AP-SISO2 of the access point can re-establish the connection with the channel S-SISO2 of the user equipment.
  • the second channel S-SISO2 of the user equipment is connected with the second channel AP-SISO2 of the access point. And, through its first channel S-SISO1, sends a channel switching command to the first channel AP-SISO1 of the access point.
  • channel switching can be repeated between the two channels of the access point until the transmission rate meets the rate threshold.
  • an embodiment of the present invention further provides a channel switching apparatus 1 that can be installed on an access point (not shown), including: a connection holding unit 11, when channel switching is required.
  • the first channel of the access point supporting the multiple input multiple output MIMO is connected to the user equipment, where the MIMO-enabled access point includes at least two channels, and one of the channels is the first channel a channel determining unit 12, connected to the connection holding unit 11, determining a switching channel from the channel of the MIMO-enabled access point; and a channel switching unit 13 connected to the channel determining unit 12 to support the MIMO
  • the connection of the access point to the user equipment is switched to the switching channel.
  • the channel switching apparatus provided by the embodiment of the present invention can divide the multiple input multiple output channel in the access point supporting the multiple input multiple output scheme into multiple single input single output channels, thereby being capable of passing at least one single input single output channel. Maintaining the connection between the user equipment and the access point, and using other single-input single-output channels in the access point for channel switching, thereby disconnecting from the user equipment while performing channel switching on other single-input single-output channels. The user equipment and the access point can still maintain communication by using the at least one single-input single-output channel, so as to avoid the problem that the channel switching in the prior art takes too long, and the user experience is improved.
  • the channel determining unit 12 includes: a handover command sending module 121, to enable the MIMO-enabled access point.
  • the first channel receives a channel switching command of the user equipment, and sends the channel switching command to any channel of the MIMO-enabled access point, where any channel of the MIMO-enabled access point is The frequency is different from the frequency of the first channel of the MIMO-enabled access point; the switching channel determining module 122 is connected to the handover command sending module 121, and receives any channel of the MIMO-enabled access point.
  • the MIMO-enabled access point One channel is used as the switching channel.
  • the channel determining unit 12 further includes: a handover complete message forwarding module 123, and is connected to the switching channel determining module 122 to enable the first channel of the MIMO-enabled access point. Forwarding, to the user equipment, a channel switch completion message that the handover channel has completed.
  • the channel switching unit 13 includes: a pre-authentication module 131, configured to perform pre-authentication between the user equipment and the switching channel by using a first path of the MIMO-enabled access point;
  • the switching module 132 is connected to the pre-authentication module 131, and after completing the pre-authentication, switches the connection between the MIMO-enabled access point and the user equipment to the switching channel.
  • the apparatus further includes: a first disconnecting module 133, connected to the pre-authentication module 131, after the pre-authentication is completed, cutting the The connection of the first channel of the access point supporting multiple input multiple output MIMO to the user equipment.
  • the connection holding unit 11 when the user equipment is a user equipment supporting MIMO, the connection holding unit 11 includes: a holding module 111, which is a first channel that supports an MIMO access point. The device is further connected to the first channel of the user equipment; the device further includes: a connecting unit 14 connected to the connection holding unit 11 to connect the second channel and the user of the access point supporting multiple input multiple output MIMO The second channel of the device is connected.
  • the channel determining unit 12 includes: a channel determining module 121, and is connected to the holding module 111, and determines a second channel of the MIMO-enabled access point as the switching channel.
  • the channel switching unit 13 includes: a handover request receiving module 131', and is connected to the channel determining unit 12, so that the switching channel receives a channel switching request of the second channel of the user equipment;
  • the disconnection module 133' is connected to the handover request receiving module 131', and disconnects the connection between the second channel of the MIMO-enabled access point and the second channel of the user equipment according to the channel switching request;
  • Two switching module Connecting with the second disconnecting module 133 ′, the MIMO-enabled access point and the MIMO-enabled access point are connected by the second channel of the MIMO-enabled access point and the second channel of the user equipment.
  • the connection of the user equipment is switched to the switching channel.
  • the second switching module 132' includes: a connection request receiving unit 1321' that causes the switching channel to receive a connection request of the user equipment; and a confirmation message transmitting portion 1322' And connecting, by the connection request receiving unit 1321 ′, the switching channel to send a connection confirmation message to the second channel of the user equipment by using the second channel of the MIMO-enabled access point; the connection switching unit 1323 Connecting with the acknowledgment message transmitting unit 1322 ′, after the second channel of the user equipment receives the connection confirmation message, switching the connection between the MIMO-enabled access point and the user equipment to On the switching channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供一种信道切换方法及装置，涉及通信领域，为防止信道切换花费时间过长，提高用户使用体验而发明。所述信道切换方法包括以下步骤：在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道(11)；从所述支持MIMO的接入点的通道中确定切换通道(12)；将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上(13)。本发明可用于信道切换技术中。

Description

信道切换方法及装置
本申请要求于2014年1月10日提交中国专利局、申请号为201410012791.X，发明名称为“信道切换方法及装置”的中国专利申请的优先权，在先申请文件的内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种信道切换方法及装置。
背景技术
以往，在用户设备(例如用户设备)通过一个信道与接入点连接的状态下，可能由于该信道环境变差而导致数据传输速率难以满足用户的要求，对于对传输速率较为敏感的应用(例如Wifi Direct)而言，需要更换环境更好的信道，以达到用户的速率需求。
在现有技术中，用户可以使用用户设备与接入点协商进行信道的切换。具体而言，接入点在接收到用户设备的切换请求后，根据预先设定好的方案进行信道切换，在完成信道切换后，接入点会与用户设备重新连接。但是，在该现有技术中，由于在接入点进行信道切换的过程中无法为用户设备提供数据传输服务，因此，为了等待接入点完成信道切换，用户设备首先需要与接入点断开连接，直至接入点的信道切换完成后，该用户设备才能与接入点重新建立连接。由此，由于信道切换花费时间长，且用户设备在该时间内无法进行数据传输，因而存在用户使用体验不佳的问题。
发明内容
本发明的实施例提供一种信道切换方法及装置，防止信道切换花费时间过长，提高用户使用体验。
本发明的第一方面，提供一种信道切换方法，包括以下步骤：在 需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道；从所述支持MIMO的接入点的通道中确定切换通道；将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
在本发明的第一方面的第一种可能的实现方式中，当所述用户设备为仅支持单输入单输出SISO的用户设备时，所述从所述支持MIMO的接入点的通道中确定切换通道包括：所述支持MIMO的接入点的第一路通道接收所述用户设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率；在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任一路通道作为所述切换通道。
结合本发明的第一方面的第一种可能的实现方式，在本发明的第一方面的第二种可能的实现方式中，所述方法还包括：所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
结合本发明的第一方面的第一种可能或第一方面的第二种可能的实现方式，在本发明的第一方面的第三种可能的实现方式中，所述将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上具体包括：通过所述支持MIMO的接入点的第一路通道，所述用户设备与所述切换通道之间进行预认证；在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
结合本发明的第一方面的第三种可能的实现方式，在本发明的第一方面的第四种可能的实现方式中，在完成所述预认证后，所述方法还包括：切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
在本发明的第一方面的第五种可能的实现方式中，当所述用户设备为支持MIMO的用户设备时，所述将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接具体为：将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接；所述方法还包括：将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
结合本发明的第一方面的第五种可能的实现方式，在本发明的第一方面的第六种可能的实现方式中，所述从所述支持MIMO的接入点的通道中确定切换通道包括：将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
结合本发明的第一方面的第五种可能或第一方面的第六种可能的实现方式，在本发明的第一方面的第七种可能的实现方式中，所述将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上具体包括：所述切换通道接收所述用户设备的第二路通道的信道切换请求；根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接；通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
结合本发明的第一方面的第七种可能的实现方式，在本发明的第一方面的第八种可能的实现方式中，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上包括：所述切换通道接收所述用户设备的连接请求；所述切换通道通过所述支持MIMO的接入点的第二路通道向所述用户设备的第二路通道发送连接确认消息；在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
本发明的第二方面，提供一种信道切换装置，安装在接入点上， 包括：连接保持单元，在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道；通道确定单元，与所述连接保持单元连接，从所述支持MIMO的接入点的通道中确定切换通道；通道切换单元，与所述通道确定单元连接，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
在本发明的第二方面的第一种可能的实现方式中，当所述用户设备为仅支持单输入单输出SISO的用户设备时，所述通道确定单元包括：切换命令发送模块，使所述支持MIMO的接入点的第一路通道接收所述用户设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率；切换通道确定模块，与所述切换命令发送模块连接，在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任一路通道作为所述切换通道。
结合本发明的第二方面的第一种可能的实现方式，在本发明的第二方面的第二种可能的实现方式中，所述通道确定单元还包括：切换完成消息转发模块，与所述切换通道确定模块连接，使所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
结合本发明的第二方面的第一种可能或第二方面的第二种可能的实现方式，在本发明的第二方面的第三种可能的实现方式中，所述通道切换单元包括：预认证模块，通过所述支持MIMO的接入点的第一路通道，使所述用户设备与所述切换通道之间进行预认证；第一切换模块，与所述预认证模块连接，在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
结合本发明的第二方面的第三种可能的实现方式，在本发明的第二方面的第四种可能的实现方式中，所述装置还包括：第一切断模块，与所述预认证模块连接，在完成所述预认证后，切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
在本发明的第二方面的第五种可能的实现方式中，当所述用户设备为支持MIMO的用户设备时，所述连接保持单元包括：保持模块，将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接；所述装置还包括：连接单元，与所述连接保持单元连接，将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
结合本发明的第二方面的第五种可能的实现方式，在本发明的第二方面的第六种可能的实现方式中，所述通道确定单元包括：通道确定模块，与所述保持模块连接，将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
结合本发明的第二方面的第五种可能或第六种可能的实现方式，在本发明的第二方面的第七种可能的实现方式中，所述通道切换单元包括：切换请求接收模块，与所述通道确定单元连接，使所述切换通道接收所述用户设备的第二路通道的信道切换请求；第二切断模块，与所述切换请求接收模块连接，根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接；第二切换模块，与所述第二切断模块连接，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
结合本发明的第二方面的第七种可能的实现方式，在本发明的第二方面的第八种可能的实现方式中，所述第二切换模块包括：连接请求接收部，使所述切换通道接收所述用户设备的连接请求；确认消息发送部，使所述切换通道通过所述支持MIMO的接入点的第二路通道向所 述用户设备的第二路通道发送连接确认消息；连接切换部，在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
本发明实施例提供的信道切换方法及装置，通过将支持多输入多输出方案的接入点中的多输入多输出信道划分为多路的单输入单输出信道，从而能够通过至少一路单输入单输出信道维持用户设备与接入点之间的连接，并利用接入点中的其它单输入单输出信道进行信道切换，由此，虽然在其它单输入单输出信道进行信道切换时与用户设备断开连接，用户设备与接入点依然可以利用上述至少一路单输入单输出信道维持通信，从而避免中现有技术中存在的信道切换花费时间过长的问题，提高了用户使用体验。
附图说明
图1为本发明提供的信道切换方法的一种流程示意图；
图2为图1所示的信道切换方法的具体流程图；
图3为图2所示的信道切换方法的具体流程图；
图4为图2或3所示的信道切换方法的具体流程图；
图5为图4所示的信道切换方法的具体流程图；
图6为图1所示的信道切换方法的具体流程图；
图7为图6所示的信道切换方法的具体流程图；
图8为图6或7所示的信道切换方法的具体流程图；
图9为图8所示的信道切换方法的具体流程图；
图10为本发明提供的信道切换装置的一种结构框图；
图11为图10所示的信道切换装置的一种具体结构框图；
图12为图11所示的信道切换装置的一种具体结构框图；
图13为图11或12所示的信道切换装置的一种具体结构框图；
图14为图13所示的信道切换装置的一种具体结构框图；
图15为图10所示的信道切换装置的一种具体结构框图；
图16为图15所示的信道切换装置的一种具体结构框图；
图17为图15或16所示的信道切换装置的一种具体结构框图；
图18为图17所示的信道切换装置的一种具体结构框图；
图19为接入点的通道划分示意图；
图20为示出本发明第一实施方式的信道切换完成前的示意图；
图21为示出本发明第一实施方式的信道切换完成后的示意图；
图22为示出本发明第二实施方式的信道切换完成前的示意图；
图23为示出本发明第二实施方式的信道切换完成前的示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
首先，本发明实施例提供一种信道切换方法。以下通过具体的实施例对本发明实施例提供的道切换方法进行详细说明。
如图1所示，本实施例提供的信道切换方法包括以下步骤。
步骤11，在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道。
其中，是否需要进行信道切换可以由用户确定，例如，当用户在利用用户设备，与接入点之间进行数据交互服务时，如果认为当前数据交互速度较慢，则可通过点击信道切换按键等方式，来体现此时需要进行信道切换的意图。当然，上述关于需要进行信道切换的举例仅为了便于理解，本发明实施例不限于此，例如，可以通过用户设备自动判断是 否需要进行信道切换，例如，如果当前信道速率小于用户设备中预先设定的阈值，则自动向接入点发送消息，以体现此时需要进行信道切换的意图。
另外，支持多输入多输出MIMO的接入点支持多输入多输出MIMO方案，其具有至少两个输入及至少两个输出，举例而言，例如三入两出MIMO、三入三出MIMO等。
在该情况下，由于支持多输入多输出MIMO的接入点具有至少两个输入及至少两个输出，因此能够构成两路以上的多路通道，用户设备与其中的一路通道保持连接。例如，如图19所示，当接入点支持两入两出MIMO时，将其分别定义为输入1、输入2、输出1及输出2，则输入1与输出1可构成一路通道，输入2与输出2可构成另一路通道。该情况下，接入点的第一路通道即输入1与输出1所构成的通道，或者输入2与输出2所构成的通道。
当然，可以理解的是，上述关于多输入多输出MIMO为两入两出的情况仅为举例，本发明不限于此，例如，还可以是三入两出MIMO，此时，只要将输入1～3中任意两个与输出1、2构成通道即可，此时会有一个输入由于无输出与其匹配而处于空闲状态。
步骤12，从所述支持MIMO的接入点的通道中确定切换通道。
其中，由于需要进行信道切换，且支持MIMO的接入点本身可构成多路，因此要从该接入点的通道中确定通道。
如图2所示，在本发明的一个具体应用中，当所述用户设备为仅支持单输入单输出SISO的用户设备时，该步骤12包括以下步骤121及步骤122。
其中，单输入单输出SISO为只有一个输入和一个输出的方案，在支持单输入单输出SISO的用户设备中，仅能够构成一路用于供数据交互的通道。
步骤121，所述支持MIMO的接入点的第一路通道接收所述用户 设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率。
其中，当传输速率较慢时，用户设备可由用户手动或自身自动地发送信道切换命令。接入点的某一路通道接收该信道切换命令，使其成为不同于用户设备所连接着的通道的频率，例如，用户设备当前连接的通道的频率为2.4GHz，则被发送信道切换命令的通道不再采用2.4GHz，而是用其他频率。
步骤122，在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任一路通道作为所述切换通道。
在该步骤中，在用户设备接收到来自接入点的任一路通道的确认消息后，即表示该路通道可以用来进行信道切换，因此，此时将该接入点的任一路通道视作切换通道。
如图3所示，在本发明的一个更具体的实施例中，当所述用户设备为仅支持单输入单输出SISO的用户设备时，步骤12还包括：
步骤123，所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
具体而言，在该支持MIMO的接入点的任一路通道、即切换通道完成了信道切换后，可通过与用户设备连接着的第一路通道，将表示切换通道已完成的这一消息发送给用户设备。
在完成上述步骤后，在步骤13中，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
如图4所示，具体而言，该步骤13可包括如下步骤131及132。
步骤131，通过所述支持MIMO的接入点的第一路通道，所述用户设备与所述切换通道之间进行预认证。
这里，用户设备与切换通道之间进行预认证是指，用户设备与即 将要切换的通道之间的提前认证，由此可进一步缩短切换信道所使用的时间。
步骤132，在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
此时，由于用户设备与接入点的切换通道之间已经经由第一路通道完成了提前认证，因此可以直接将该用户设备的连接切换至切换通道。
在具体应用中，如图5所示，可在完成所述预认证后，增加如下步骤133。
步骤133，切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
这是由于，因用户设备为支持单输入单输出SISO，因此不能同时连接接入点的两路及其以上的通道，因此当用户设备与切换通道连接时，首先需要切换与当前连接的第一路通道之间的连接。
本发明实施例提供的信道切换方法，通过将支持多输入多输出方案的接入点中的多输入多输出信道划分为多路的单输入单输出信道，从而能够通过至少一路单输入单输出信道维持用户设备与接入点之间的连接，并利用接入点中的其它单输入单输出信道进行信道切换，由此，虽然在其它单输入单输出信道进行信道切换时与用户设备断开连接，用户设备与接入点依然可以利用上述至少一路单输入单输出信道维持通信，从而避免中现有技术中存在的信道切换花费时间过长的问题，提高了用户使用体验。
下面以一个具体实施例，对用户设备为仅支持SISO的用户设备的情况进行说明。
如图20所示，用户设备仅支持单输入单输出SISO，具有由一个输入及一个输出构成的SISO通道。在本实施例中，该用户设备为具有一路SISO通道的用户设备。另外，接入点为支持多输入多输出MIMO， 具体而言，其具有输入1和输入2的双输入、以及输出1和输出2的双输出。在本发明实施例中，该接入点将该多输入多输出MIMO，划分为多路单输入多输出SISO。具体而言，如图所示，使输入1与输出1构成第一路通道SISO1，并使输入2与输出2构成第二路通道SISO2。
在本实施例中，用户设备与接入点的某一路SISO通道的输入及输出连接，图中，用户设备与接入点的第一路通道SISO1连接。在用户设备与接入点之间的传输速率较佳的情况下，通过该第一路通道SISO1即可实现数据的交互。
当由于信道受到干扰，导致信道环境变差时，用户设备与接入点之间的传输速率会变差。
在该情况下，用户可以点击用户设备上的信道切换按键，使该信道切换命令经由用户设备的输出、接入点的SISO1的输入发送至接入点的第一路通道SISO1。
该第一路通道SISO1在收到该信道切换命令后，通过内部通信，将其转发给该接入点内的第二路通道SISO2。所述第二路通道SISO2在接收到该信道切换命令后，进行信道切换，使切换后的频率不同于第一路通道的频率。例如，在第一路通道SISO1的频率为2.4GHz的情况下，第二路通道SISO2的信道的频率可以切换至2.4835GHz的频率。可以理解的是，该频率切换方式仅为了便于理解而举例，可以利用其它方式进行频率切换。例如，用户根据自己的需要设置频率扫描间隔，并将其保存在用户设备的配置文件中，以在信道切换时，将该信息发送给接入点，使其按照用户预先设置的频率扫描间隔来扫描信道，并切换至扫描获得到的信道上。
在该第二路通道SISO2的信道切换完成后，通过内部通信，将其信道切换完成的消息发送给第一路通道SISO1。第一路通道SISO1通过与用户设备的SISO之间的通信，将该信道切换完成的消息转发给该用户设备。
该用户设备在接收到该信道切换完成的消息后，通过第一路通道SISO1向接入点发送预认证请求。第一路通道SISO1在接收到该预认证请求后，通过内部通信，将该预认证请求转发给第二路通道SISO2。由此，经由第一路通道SISO1，完成用户设备与第二路通道SISO2之间的预认证。
在完成上述预认证后，用户设备向接入点的第一路通道SISO1发送切断请求，以断开二者之间的连接。随即发送关联请求给第二路通道SISO2，以与切换好信道的第二路通道SISO2进行连接。
如图21所示，接入点的第二路通道SISO2接收到来自用户设备的关联请求后，接入点的第二路通道SISO2可与用户设备的通道SISO建立连接。
在本实施例中，在用户设备与接入点的第二路通道SISO2连接后，为了确认该连接后的速率是否满足用户需求，采用了如下方式。
用户首先根据理论传输速率和实际工作需求速率来设定速率门限值，并将该速率门限值保存在用户设备的配置文件当中。当用户设备与接入点的第二路通道SISO2连接后，判断当前的传输速率是否满足配置文件中所保存的速率门限值。在当前的传输速率满足速率门限值的情况下，即认为连接后的速率满足了用户需求。
反之，在当前的传输速率不满足速率门限值的情况下，认为连接后的速率不满足用户需求，该情况下，用户设备与接入点的第二路通道SISO2保持连接，并通过该第二路通道SISO2，以内部通信的方式向接入点的第一路通道SISO1发送信道切换命令。第一路通道SISO1在接收到该信道切换命令后，进行信道切换，使切换后的频率不同于第一路通道的频率。由此，可以在接入点的两路通道之间重复进行信道切换，直至传输速率满足速率门限值为止。
当然，可以理解的是，确认该连接后的速率是否满足用户需求的方式不仅限于上述方式，例如还可以对整个工作频带进行扫描，在对整 个工作频带的扫描过程中，用户设备会一直维护一个配置文件，每次连接到一个新的工作频率时均进行测速，并在该配置文件中保存连接速率及其对应的工作频率。如果在扫描完整个工作频带后，未能找到速率大于速率门限值的频率，则选择该配置文件所保存的与最大的连接速率对应的频率的信道，以保证此时的传输速率是当前所有信道中的最快的。
在另一种情况下，用户设备可以与接入点一样，为支持多输入多输出MIMO的用户设备。如图6所示，当所述用户设备为支持MIMO的用户设备时，所述步骤11具体为如下。
步骤111，将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接。
在该情况下，由于接入点与用户设备均支持多输入多输出MIMO，因此可分别构成两路以上的通道，此时，可将持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接。
在该方法中还包括步骤112，将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
在用户设备与接入点均具有多路通道的情况下，除第一路通道以外的其他通道彼此相连。
在具体应用中，如图7所示，步骤12可包括步骤121’。
步骤121’，将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
即，接入点的与用户设备的第二路通道相连接的第二路通道被作为切换通道。
在该情况下，如图8所示，与上述步骤对应地，所述步骤13具体包括如下步骤。
步骤131’，所述切换通道接收所述用户设备的第二路通道的信道切换请求。
此时，由于该切换通道与用户设备处于连接状态，因此可直接接 收来自该用户设备的信道切换请求。
步骤132’，根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接。
在接到该信道切换请求后，该接入点的第二路通道的与用户设备的连接即被切断，此时，接入点的第二路通道进行信道切换。
步骤133’，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
具体而言，通过该支持MIMO的接入点的第一路通道，可将第二路通道的信道切换消息发送给用户设备，从而用户设备的第二路通道也可向接入点发送再次连接请求，以便将支持MIMO的接入点与用户设备的连接切换到所述切换通道上。
在本发明的一个具体实施例中，如图9所示，所述步骤133’包括如下步骤。
步骤1331’，所述切换通道接收所述用户设备的连接请求。
具体而言，所述切换通道可经由用户设备与其接入点连接的第一路通道等接收该用户设备的连接请求。
步骤1332’，所述切换通道通过所述支持MIMO的接入点的第二路通道向所述用户设备的第二路通道发送连接确认消息。
在接收到用户设备的连接请求后，切换通道即可通过其接入点的第一路通道向用户设备的第一路通道发送表示可以进行连接的连接确认消息。此后，用户设备的第一路通道可以在用户设备内，通过内部信息传输的方式，将该连接确认消息发送给用户设备的第二路通道。
步骤1333’，在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
具体而言，用户设备的第二路通道在接收到连接确认消息后，即 可对接入点发送连接信息，使接入点的切换通道与用户设备重新予以连接。
本发明实施例提供的信道切换方法，通过将支持多输入多输出方案的接入点中的多输入多输出信道划分为多路的单输入单输出信道，从而能够通过至少一路单输入单输出信道维持用户设备与接入点之间的连接，并利用接入点中的其它单输入单输出信道进行信道切换，由此，虽然在其它单输入单输出信道进行信道切换时与用户设备断开连接，用户设备与接入点依然可以利用上述至少一路单输入单输出信道维持通信，从而避免中现有技术中存在的信道切换花费时间过长的问题，提高了用户使用体验。
下面以一个具体实施例，对用户设备为支持MIMO的用户设备的情况进行说明。
如图22所示，用户设备支持多输入多输出MIMO，具有输入1和输入2的双输入、以及输出1和输出2的双输出。相应的，在用户设备中，划分为多路单输入多输出SISO，具体而言，使输入1与输出1构成第一路通道S-SISO1，并使输入2与输出2构成第二路通道S-SISO2。另外，接入点为支持多输入多输出MIMO，具体而言，其具有输入1和输入2的双输入、以及输出1和输出2的双输出。在本发明实施例中，该接入点将该多输入多输出MIMO，划分为多路单输入多输出SISO。具体而言，如图所示，使输入1与输出1构成第一路通道AP-SISO1，并使输入2与输出2构成第二路通道AP-SISO2。
在本实施例中，用户设备的第一路通道S-SISO1与接入点的第一路通道AP-SISO1连接，用户设备的第二路通道S-SISO2与接入点的第二路通道AP-SISO2连接。在用户设备与接入点之间的传输速率较佳的情况下，用户设备与接入点通过这两路通道即可实现数据的交互。
当由于信道受到干扰，导致信道环境变差时，用户设备与接入点之间的传输速率会变差。
在该情况下，用户可以点击用户设备上的信道切换按键。此时，用户设备的第一路通道S-SISO1与接入点的第一路通道AP-SISO1保持连接，由于在本实施例中，接入点除该第一路通道AP-SISO1以外，仅包括第二路通道AP-SISO2。因此，该第二路通道AP-SISO2被确定为用于切换的切换通道。
这里，需要说明的是，当接入点的包括三路以上的SISO通道时，可以通过用户设备指定某一路通道作为切换信道，或者由接入点自行选定。除此以外，其他处理方式与前述实施例相同，这里不再赘述。
如图23所示，该信道切换命令经由用户设备的第二路通道S-SISO2发送给接入点的第二路通道AP-SISO2。该第二路通道AP-SISO2在接收到该信道切换命令后，断开与用户设备的第二路通道S-SISO2之间的连接，并进行信道切换，使切换后的频率不同于第一路通道的频率。关于信道切换的方式，与上述实施例相同，这里不再赘述。
在该第二路通道AP-SISO2的信道切换完成后，通过内部通信，将其信道切换完成的消息S发送给第一路通道AP-SISO1。第一路通道AP-SISO1通过与用户设备的第一路通道S-SISO1之间的通信，将该信道切换完成的消息S转发给该用户设备。
用户设备通过第二路通道S-SISO2向接入点的第二路通道AP-SISO2发送关联请求，以与切换好信道的第二路通道AP-SISO2进行连接。
接入点的第二路通道AP-SISO2接收到来自用户设备的关联请求后，接入点的第二路通道AP-SISO2可与用户设备的通道S-SISO2重新建立连接。
其中，关于确认该连接后的速率是否满足用户需求的方式与上述实施例形同，这里不再赘述。
另外，类似地，在当前的传输速率不满足用户需求的情况下，用户设备的第二路通道S-SISO2与接入点的第二路通道AP-SISO2保持连 接，并通过其第一路通道S-SISO1向接入点的第一路通道AP-SISO1发送信道切换命令。由此，可以在接入点的两路通道之间重复进行信道切换，直至传输速率满足速率门限值为止。
相应地，如图10所示，本发明的实施例还提供一种信道切换装置1，其可安装在接入点(未图示)上，包括：连接保持单元11，在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道；通道确定单元12，与所述连接保持单元11连接，从所述支持MIMO的接入点的通道中确定切换通道；通道切换单元13，与所述通道确定单元12连接，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
本发明实施例提供的信道切换装置，通过将支持多输入多输出方案的接入点中的多输入多输出信道划分为多路的单输入单输出信道，从而能够通过至少一路单输入单输出信道维持用户设备与接入点之间的连接，并利用接入点中的其它单输入单输出信道进行信道切换，由此，虽然在其它单输入单输出信道进行信道切换时与用户设备断开连接，用户设备与接入点依然可以利用上述至少一路单输入单输出信道维持通信，从而避免中现有技术中存在的信道切换花费时间过长的问题，提高了用户使用体验。
其中，如图11所示，当所述用户设备为仅支持单输入单输出SISO的用户设备时，所述通道确定单元12包括：切换命令发送模块121，使所述支持MIMO的接入点的第一路通道接收所述用户设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率；切换通道确定模块122，与所述切换命令发送模块121连接，在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任 一路通道作为所述切换通道。
可选的，如图12所示，所述通道确定单元12还包括：切换完成消息转发模块123，与所述切换通道确定模块122连接，使所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
具体而言，所述通道切换单元13包括：预认证模块131，通过所述支持MIMO的接入点的第一路通道，使所述用户设备与所述切换通道之间进行预认证；第一切换模块132，与所述预认证模块131连接，在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
举例而言，如图14所示，在本发明一个实施例中，所述装置还包括：第一切断模块133，与所述预认证模块131连接，在完成所述预认证后，切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
在另一种情况下，如图15所示，当所述用户设备为支持MIMO的用户设备时，所述连接保持单元11包括：保持模块111，将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接；所述装置还包括：连接单元14，与所述连接保持单元11连接，将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
可选的，所述通道确定单元12包括：通道确定模块121，与所述保持模块111连接，将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
具体而言，所述通道切换单元13包括：切换请求接收模块131’，与所述通道确定单元12连接，使所述切换通道接收所述用户设备的第二路通道的信道切换请求；第二切断模块133’，与所述切换请求接收模块131’连接，根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接；第二切换模块 132’，与所述第二切断模块133’连接，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
举例而言，在本发明的一个具体应用中，所述第二切换模块132’包括：连接请求接收部1321’，使所述切换通道接收所述用户设备的连接请求；确认消息发送部1322’，与所述连接请求接收部1321’连接，使所述切换通道通过所述支持MIMO的接入点的第二路通道向所述用户设备的第二路通道发送连接确认消息；连接切换部1323’，与所述确认消息发送部1322’连接，在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种信道切换方法，其特征在于，包括以下步骤：
    在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道；
    从所述支持MIMO的接入点的通道中确定切换通道；
    将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  2. 根据权利要求1所述的方法，其特征在于，
    当所述用户设备为仅支持单输入单输出SISO的用户设备时，所述从所述支持MIMO的接入点的通道中确定切换通道包括：
    所述支持MIMO的接入点的第一路通道接收所述用户设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率；
    在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任一路通道作为所述切换通道。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
  4. 根据权利要求2或3所述的方法，其特征在于，所述将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上具体包括：
    通过所述支持MIMO的接入点的第一路通道，所述用户设备与所述切换通道之间进行预认证；
    在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  5. 根据权利要求4所述的方法，其特征在于，在完成所述预认证后， 所述方法还包括：
    切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
  6. 根据权利要求1所述的方法，其特征在于，当所述用户设备为支持MIMO的用户设备时，所述将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接具体为：
    将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接；
    所述方法还包括：
    将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
  7. 根据权利要求6所述的方法，其特征在于，所述从所述支持MIMO的接入点的通道中确定切换通道包括：
    将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
  8. 根据权利要求6或7所述的方法，其特征在于，
    所述将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上具体包括：
    所述切换通道接收所述用户设备的第二路通道的信道切换请求；
    根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接；
    通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  9. 根据权利要求8所述的方法，其特征在于，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上包括：
    所述切换通道接收所述用户设备的连接请求；
    所述切换通道通过所述支持MIMO的接入点的第二路通道向所述用 户设备的第二路通道发送连接确认消息；
    在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  10. 一种信道切换装置，安装在接入点上，其特征在于，包括：
    连接保持单元，在需要进行信道切换时，将支持多输入多输出MIMO的接入点的第一路通道与用户设备保持连接，其中，所述支持MIMO的接入点包括至少两路通道，其中的一路通道为所述第一路通道；
    通道确定单元，与所述连接保持单元连接，从所述支持MIMO的接入点的通道中确定切换通道；
    通道切换单元，与所述通道确定单元连接，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  11. 根据权利要求10所述的装置，其特征在于，
    当所述用户设备为仅支持单输入单输出SISO的用户设备时，所述通道确定单元包括：
    切换命令发送模块，使所述支持MIMO的接入点的第一路通道接收所述用户设备的信道切换命令，并将所述信道切换命令发送给所述支持MIMO的接入点的任一路通道，其中所述支持MIMO的接入点的任一路通道的频率不同于所述支持MIMO的接入点的第一路通道的频率；
    切换通道确定模块，与所述切换命令发送模块连接，在接收到所述支持MIMO的接入点的任一路通道的确认消息后，将所述支持MIMO的接入点的任一路通道作为所述切换通道。
  12. 根据权利要求11所述的装置，其特征在于，所述通道确定单元还包括：
    切换完成消息转发模块，与所述切换通道确定模块连接，使所述支持MIMO的接入点的第一路通道向所述用户设备转发所述切换通道已完成的信道切换完成消息。
  13. 根据权利要求11或12所述的装置，其特征在于，所述通道切换单元包括：
    预认证模块，通过所述支持MIMO的接入点的第一路通道，使所述用户设备与所述切换通道之间进行预认证；
    第一切换模块，与所述预认证模块连接，在完成所述预认证后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  14. 根据权利要求13所述的装置，其特征在于，所述装置还包括：
    第一切断模块，与所述预认证模块连接，在完成所述预认证后，切断所述支持多输入多输出MIMO的接入点的第一路通道与用户设备的连接。
  15. 根据权利要求10所述的装置，其特征在于，
    当所述用户设备为支持MIMO的用户设备时，所述连接保持单元包括：
    保持模块，将支持MIMO的接入点的第一路通道与所述用户设备的第一路通道保持连接；
    所述装置还包括：
    连接单元，与所述连接保持单元连接，将支持多输入多输出MIMO的接入点的第二路通道与用户设备的第二路通道连接。
  16. 根据权利要求15所述的装置，其特征在于，所述通道确定单元包括：
    通道确定模块，与所述保持模块连接，将所述支持MIMO的接入点的第二路通道确定为所述切换通道。
  17. 根据权利要求15或16所述的装置，其特征在于，
    所述通道切换单元包括：
    切换请求接收模块，与所述通道确定单元连接，使所述切换通道接收所述用户设备的第二路通道的信道切换请求；
    第二切断模块，与所述切换请求接收模块连接，根据所述信道切换请求切断所述支持MIMO的接入点的第二路通道与所述用户设备的第二路通道的连接；
    第二切换模块，与所述第二切断模块连接，通过所述支持MIMO的接入点的第二路通道、所述用户设备的第二路通道，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
  18. 根据权利要求17所述的装置，其特征在于，所述第二切换模块包括：
    连接请求接收部，使所述切换通道接收所述用户设备的连接请求；
    确认消息发送部，与所述连接请求接收部连接，使所述切换通道通过所述支持MIMO的接入点的第二路通道向所述用户设备的第二路通道发送连接确认消息；
    连接切换部，与所述确认消息发送部连接，在所述用户设备的第二路通道接收到所述连接确认消息后，将所述支持MIMO的接入点与所述用户设备的连接切换到所述切换通道上。
PCT/CN2014/096074 2014-01-10 2014-12-31 信道切换方法及装置 WO2015103942A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410012791.XA CN103731893B (zh) 2014-01-10 2014-01-10 信道切换方法及装置
CN201410012791.X 2014-01-10

Publications (1)

Publication Number Publication Date
WO2015103942A1 true WO2015103942A1 (zh) 2015-07-16

Family

ID=50455781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/096074 WO2015103942A1 (zh) 2014-01-10 2014-12-31 信道切换方法及装置

Country Status (2)

Country Link
CN (1) CN103731893B (zh)
WO (1) WO2015103942A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103731893B (zh) * 2014-01-10 2017-03-08 华为终端有限公司 信道切换方法及装置
CN105828394B (zh) * 2015-05-20 2018-02-02 维沃移动通信有限公司 一种多链路设备的链路选择方法、装置及通信设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356006A (zh) * 1999-04-09 2002-06-26 艾利森电话股份有限公司 移动通信网内连接的高效处理
CN101296520A (zh) * 2008-06-20 2008-10-29 青岛海信移动通信技术股份有限公司 基于td-scdma的端对端通信方法、设备及系统
CN102271403A (zh) * 2011-07-27 2011-12-07 东南大学 一种超高速无线个域网多信道复用方法
CN103731893A (zh) * 2014-01-10 2014-04-16 华为终端有限公司 信道切换方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101170759A (zh) * 2006-10-24 2008-04-30 国际商业机器公司 多模通信终端、多模通信实现方法
CN102724727B (zh) * 2012-06-18 2017-04-12 华为技术有限公司 一种动态切换信道的方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1356006A (zh) * 1999-04-09 2002-06-26 艾利森电话股份有限公司 移动通信网内连接的高效处理
CN101296520A (zh) * 2008-06-20 2008-10-29 青岛海信移动通信技术股份有限公司 基于td-scdma的端对端通信方法、设备及系统
CN102271403A (zh) * 2011-07-27 2011-12-07 东南大学 一种超高速无线个域网多信道复用方法
CN103731893A (zh) * 2014-01-10 2014-04-16 华为终端有限公司 信道切换方法及装置

Also Published As

Publication number Publication date
CN103731893A (zh) 2014-04-16
CN103731893B (zh) 2017-03-08

Similar Documents

Publication Publication Date Title
JP5677525B2 (ja) チャネル切替方法、移動端末、無線アクセス装置及びチャネル切替システム
US10070430B2 (en) Method for configuring resource to data radio bearer DRB, and apparatus
JP6386188B2 (ja) Ｗｉ−Ｆｉシステム電力を改善するためのスキャンチャネル低減
US20190037463A1 (en) Data transmission method, base station, and terminal equipment
EP3462779B1 (en) Channel switching method and device
US20140348131A1 (en) Handover method, system, and device
EP2916617B1 (en) Auxiliary information reporting and information sending method and device
RU2677693C2 (ru) Устройство связи и способ связи
JP2011524133A (ja) マルチキャリア無線通信システムのスキャニングとハンドオーバー操作
CN103546254A (zh) 执行混合式自动重送请求的方法及其基站与移动装置
CN113905397B (zh) 中继确定方法、配置方法、装置、终端及网络侧设备
US20190021036A1 (en) Terminal apparatus, communication system, and connection-destination selection method
WO2018014783A1 (zh) 一种传输数据方法和设备
JP5470590B2 (ja) 通信装置及びハンドオーバの制御方法
WO2018233665A1 (zh) 一种信息交互方法、第一基站、第二基站和移动通信终端
US9072013B2 (en) Method, apparatus, and system for processing message
JP7250114B2 (ja) サービスノードの更新方法、端末機器、および、ネットワーク側機器
WO2015103942A1 (zh) 信道切换方法及装置
CN101835200B (zh) 系统接入方法、通信系统、用户终端及网络侧设备
WO2012041187A1 (zh) 干扰信息处理方法及设备
JP2009164863A (ja) 移動局
US20180160397A1 (en) Data transmission method and apparatus
WO2020164388A1 (zh) 一种多种网络制式下的通信方法及装置
WO2015039284A1 (zh) 一种数据传输的方法和相关设备
WO2016179954A1 (zh) 一种协作实现方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14877602

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14877602

Country of ref document: EP

Kind code of ref document: A1