CN107466048B - Method and device for monitoring communication system subframe - Google Patents
Method and device for monitoring communication system subframe Download PDFInfo
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- CN107466048B CN107466048B CN201710613428.7A CN201710613428A CN107466048B CN 107466048 B CN107466048 B CN 107466048B CN 201710613428 A CN201710613428 A CN 201710613428A CN 107466048 B CN107466048 B CN 107466048B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The invention provides a method and a device for monitoring a subframe of a communication system, wherein the method comprises the following steps: a user terminal receives information used for indicating subframe configuration from a base station; the user terminal determines the type of the subframe in the wireless frame according to the information for indicating the subframe configuration; when the information for indicating the subframe configuration received by the user terminal is a signaling for indicating a fixed uplink subframe, a fixed downlink subframe and a special subframe, the type of the subframe in the determined radio frame is as follows: and the user terminal determines the subframes except the fixed uplink subframe, the fixed downlink subframe and the special subframe in the wireless frame as dynamic subframes. The embodiment of the invention also provides a device for monitoring the subframe of the communication system.
Description
The invention relates to a method and a device for monitoring communication system subframes, which are divisional applications, wherein the original application number is 201110095511.2, the application date is 2011, 4 and 15 days "
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method and an apparatus for monitoring subframes in a communication system.
Background
A frame structure (also referred to as a frame structure 2 of a second type) of a Time Division Duplex (TDD) mode of a Long Term Evolution (LTE) system and an LTE-Advanced system is shown in fig. 1, in which a radio frame of 10ms (307200Ts, 1ms 30720Ts) is divided into two half frames each of which is 5ms (153600 Ts). Each field comprises 5 subframes with the length of 1ms, and the uplink and downlink configuration of the radio frame is shown in table 1:
TABLE 1
Wherein, D represents a downlink subframe for transmitting a downlink signal; u represents an uplink subframe for transmitting an uplink signal; s represents a special subframe, and includes three special Time slots, i.e., a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), and an Uplink Pilot Time Slot (UpPTS); one of the uplink subframes or the downlink subframes is divided into 2 slots of 0.5ms, which can be referred to in fig. 1.
Resource allocation in an LTE system takes Resource Blocks (RBs) as a unit, and one RB occupies 12 Resource Elements (REs) in a frequency domain and one slot in a time domain; wherein, one RE occupies a Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbol in the time domain; that is, one RB occupies 7 SC-FDMA symbols under the condition of a Normal Cyclic Prefix (Normal Cyclic Prefix) and 6 SC-FDMA symbols under the condition of an extended cp (extended cp). The resource block to resource unit relationship is shown in fig. 2.
With the increase of the application and data service types, the ratio of uplink and downlink subframes of the TDD mode in the LTE system is changed semi-statically according to table 1, which cannot meet the requirement of dynamic change of uplink and downlink traffic. How to further improve the adjustment speed of the uplink and downlink proportion and better meet the requirement of dynamic change of uplink and downlink traffic becomes an urgent problem to be solved;
in addition, the old LTE terminal does not support dynamic change of subframe type (uplink or downlink), and at the same time, conversion and protection time are required between uplink and downlink subframes, and any change of subframe type requires a large amount of protection time overhead, thereby reducing the use efficiency of resources. Therefore, how to better accommodate the terminal device of the old version, reduce the conversion time required by the uplink and downlink conversion and the waste caused by the guard interval, and improve the utilization efficiency of the resources is also a problem to be considered and solved.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and an apparatus for monitoring subframes of a communication system, which better satisfy the requirement of dynamic change of uplink and downlink traffic.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of monitoring subframes in a communication system, the method comprising:
the base station sends information for indicating subframe configuration to the user terminal;
the user terminal determines the type of the subframe in the wireless frame according to the information for indicating the subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes.
Here, the information for indicating the subframe configuration is uplink and downlink configuration, or uplink and downlink configuration and control signaling for indicating a dynamic subframe, or signaling for indicating a fixed uplink subframe, a fixed downlink subframe, and a special subframe.
Further, when the ue receives the uplink and downlink configurations and the control signaling for indicating the dynamic subframe, the determining the subframe type in the radio frame is:
the user terminal determines the dynamic subframe in the wireless frame according to the control signaling for indicating the dynamic subframe;
determining the rest subframes in the wireless frame as one or more of fixed uplink subframes, fixed downlink subframes and special subframes according to uplink and downlink configuration;
the special subframe comprises a downlink pilot time slot DwPTS, a guard interval GP and an uplink pilot time slot UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; the dynamic subframe is used for transmitting uplink signals, downlink signals or no signals.
The control signaling for indicating the dynamic subframe is broadcast signaling or terminal-specific signaling. Further, when the ue receives a signaling indicating a fixed uplink subframe, a fixed downlink subframe, and a special subframe, the determining the type of the subframe in the radio frame is:
the user terminal determines subframes except fixed uplink subframes, fixed downlink subframes and special subframes in a wireless frame as dynamic subframes; the special subframe comprises DwPTS, GP and UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; the dynamic subframe is used for transmitting uplink signals, downlink signals or no signals.
Further, when the ue receives the uplink and downlink configurations, the determining the subframe type in the radio frame is: and the user terminal determines the intersection of the received subframe configurations in the at least two uplink and downlink configurations as the dynamic subframe.
Here, when the ue receives the uplink and downlink configurations, the determining the subframe type in the radio frame is:
determining the type of the subframe in the wireless frame as one or more of a fixed uplink subframe, a fixed downlink subframe and a special subframe according to uplink and downlink configuration;
the special subframe comprises DwPTS, GP and UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal.
Further, when the ue receives the uplink and downlink configurations, the determining the subframe type in the radio frame is: determining subframes except fixed uplink subframes, fixed downlink subframes and special subframes in a wireless frame as dynamic subframes; the dynamic subframe is used for transmitting an uplink signal, a downlink signal or no signal.
Wherein, according to the uplink and downlink configuration, determining the type of the subframe in the wireless frame as one or more of a fixed uplink subframe, a fixed downlink subframe and a special subframe is as follows:
determining a subframe with the same subframe number as that of an uplink subframe in the first uplink and downlink configuration in a wireless frame as a fixed uplink subframe;
determining a subframe with the same subframe number as that of a downlink subframe in the second uplink and downlink configuration in a wireless frame as a fixed downlink subframe;
and determining the subframe which is the same as the subframe number of the special subframe/DwPTS/UpPTS in the first uplink and downlink configuration or the second uplink and downlink configuration in the wireless frame as the special subframe/DwPTS/UpPTS.
And the subframe numbers corresponding to the fixed uplink subframe, the fixed downlink subframe and the special subframe/DwPTS/UpPTS determined in the wireless frame are not overlapped.
Further, the sending, by the base station, the information indicating the subframe configuration to the user equipment is:
and the base station sends the first uplink and downlink configuration and/or the second uplink and downlink configuration to the user terminal through a broadcast signaling or a terminal-specific signaling.
Here, the former subframe of the dynamic subframe is a fixed uplink subframe or a UpPTS, and the latter subframe of the dynamic subframe is a fixed downlink subframe or a DwPTS.
Further, the method further comprises:
and the user terminal further configures the determined dynamic subframe according to a preset condition.
The user terminal further configures the determined dynamic subframe into:
when the dynamic subframe is configured as an uplink subframe, the previous subframe of the dynamic subframe is an uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the previous subframe is a fixed uplink subframe, a special subframe/UpPTS, or a dynamic subframe configured as an uplink subframe.
The user terminal further configures the determined dynamic subframe into: when the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a special subframe/DwPTS, or a dynamic subframe configured as a downlink subframe.
An apparatus for monitoring subframes in a communication system, comprising: a transmitting unit and a subframe type determining unit; wherein the content of the first and second substances,
a transmitting unit configured to transmit information indicating a subframe configuration;
the subframe type determining unit is used for determining the type of a subframe in a wireless frame according to the received information for indicating the subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes.
Here, the information indicating the subframe configuration sent by the sending unit is uplink and downlink configuration, or uplink and downlink configuration and control signaling indicating a dynamic subframe, or signaling indicating a fixed uplink subframe, a fixed downlink subframe, and a special subframe.
Further, the subframe type determining unit is configured to determine a dynamic subframe in a radio frame according to a received control signaling indicating the dynamic subframe; determining the rest subframes in the wireless frame as one or more of fixed uplink subframes, fixed downlink subframes and special subframes according to the received uplink and downlink configuration; the control signaling for indicating the dynamic subframe is broadcast signaling or terminal-specific signaling.
Further, the subframe type determining unit is specifically configured to determine an intersection of subframe configurations in the received at least two uplink and downlink configurations as a dynamic subframe; or determining the subframes except the fixed uplink subframe, the fixed downlink subframe and the special subframe in the wireless frame as dynamic subframes according to the received uplink and downlink configuration or the signaling for indicating the fixed uplink subframe, the fixed downlink subframe and the special subframe.
Here, the subframe type determining unit is further configured to determine a subframe, in a radio frame, having a same subframe number as that of an uplink subframe in the first uplink and downlink configuration as a fixed uplink subframe; determining a subframe with the same subframe number as that of a downlink subframe in the second uplink and downlink configuration in a wireless frame as a fixed downlink subframe; and determining the subframe which is the same as the subframe number of the special subframe/DwPTS/UpPTS in the first uplink and downlink configuration or the second uplink and downlink configuration in the wireless frame as the special subframe/DwPTS/UpPTS.
Here, the sending unit is configured to send the first uplink and downlink configuration and/or the second uplink and downlink configuration through broadcast signaling or terminal-specific signaling.
Preferably, the apparatus further comprises: and the dynamic subframe configuration unit is used for further configuring the determined dynamic subframes according to preset conditions.
Further, the dynamic subframe configuration unit is specifically configured to, when a dynamic subframe is configured as an uplink subframe, determine that a subframe preceding the dynamic subframe is an uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the former subframe is a fixed uplink subframe, a special subframe/UpPTS or a dynamic subframe configured as an uplink subframe; when the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a special subframe/DwPTS, or a dynamic subframe configured as a downlink subframe.
According to the configuration scheme of the subframe in the communication system, the subframe of the types such as the fixed uplink subframe, the fixed downlink subframe, the special subframe and the like is determined according to the information for indicating the subframe configuration, so that the good compatibility of an old-version LTE terminal is realized, the protection time overhead required by the change of the subframe type is reduced, in addition, the dynamic change requirement of uplink and downlink traffic is better met by increasing the dynamic subframe type, the use efficiency of resources is improved, the realization is easier, and the redevelopment cost is reduced.
Drawings
Fig. 1 is a diagram illustrating a second type of frame structure in an LTE system;
fig. 2 is a schematic structural diagram of an RB in an LTE system;
FIG. 3 is a schematic diagram illustrating an implementation process of the method for monitoring subframes in a communication system according to the present invention;
fig. 4 is a schematic diagram of subframe configurations of a first, a fourth and a fifth embodiments of a method for monitoring subframes of a communication system according to the present invention;
FIG. 5 is a schematic diagram of a subframe configuration of a second embodiment of a method for monitoring subframes in a communication system according to the present invention;
fig. 6 is a schematic diagram of a subframe configuration of a third embodiment of a method for monitoring subframes in a communication system according to the present invention;
fig. 7 is a schematic structural diagram of an apparatus for monitoring subframes in a communication system according to the present invention.
Detailed Description
One embodiment of the present invention is: the base station sends information for indicating subframe configuration to the user terminal; the user terminal determines the type of the subframe in the wireless frame according to the information for indicating the subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 3 shows a flow of implementing the method for monitoring subframes of a communication system according to the present invention, and as shown in fig. 3, the method includes the following steps:
specifically, the base station may send uplink and downlink configuration, or uplink and downlink configuration and control signaling, or signaling for indicating a fixed uplink subframe, a fixed downlink subframe, and a special subframe to the user terminal;
here, the base station may send at least two uplink and downlink configurations to the user terminal through a broadcast signaling or a terminal-specific signaling; or, the base station sends at least one uplink and downlink configuration to the user terminal through a broadcast signaling or a terminal-specific signaling, and simultaneously sends a control signaling for indicating the dynamic subframe to the user terminal, where the control signaling may be a broadcast signaling or a terminal-specific signaling; or the base station sends signaling for indicating the fixed uplink subframe, the fixed downlink subframe and the special subframe to the user terminal.
When the base station sends the uplink configuration and the downlink configuration to the user terminal, the uplink configuration and the downlink configuration can be sent through a plurality of broadcast signals or terminal-specific signals, or can be sent through one broadcast signal or terminal-specific signal; the broadcast signaling is signaling sent to all user terminals by the base station; terminal-specific signaling refers to signaling sent by a base station to a certain user terminal or group of user terminals.
here, the ue may determine which subframes in a radio frame are dynamic subframes according to the control signaling for indicating the dynamic subframes; determining the rest subframes in the wireless frame as one or more of fixed uplink subframes, fixed downlink subframes and special subframes according to uplink and downlink configuration; the special subframe comprises DwPTS, GP and UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; the dynamic subframe is used for transmitting uplink signals, downlink signals or no signals.
Or the user terminal determines the intersection of the received subframe configurations in the at least two uplink and downlink configurations as a dynamic subframe; determining one or more of a fixed uplink subframe, a fixed downlink subframe and a special subframe in a wireless frame according to uplink and downlink configuration; or the user terminal determines one or more of a fixed uplink subframe, a fixed downlink subframe and a special subframe in a wireless frame according to uplink and downlink configuration; determining subframes except fixed uplink subframes, fixed downlink subframes and special subframes in a wireless frame as dynamic subframes;
here, the user terminal determines the type of the subframe in the radio frame to be one or more of a fixed uplink subframe, a fixed downlink subframe and a special subframe according to uplink and downlink configuration; and determining that the subframe numbers corresponding to the fixed uplink subframe, the fixed downlink subframe and the special subframe/DwPTS/UpPTS which are obtained in the wireless frame are not overlapped.
Or the user terminal determines to obtain a fixed uplink subframe, a fixed downlink subframe and a special subframe in a wireless frame according to a received signaling of the user indication fixed uplink subframe, the fixed downlink subframe and the special subframe; and determining subframes except the fixed uplink subframe, the fixed downlink subframe and the special subframe in the wireless frame as dynamic subframes.
The former subframe of the dynamic subframe is a fixed uplink subframe or a UpPTS, and the latter subframe of the dynamic subframe is a fixed downlink subframe or a DwPTS.
Specifically, the type of the subframe in the radio frame may be determined according to any 2 uplink and downlink configurations in table 1, where the any 2 uplink and downlink configurations are referred to as a first uplink and downlink configuration and a second uplink and downlink configuration; determining a subframe with the same subframe number as that of an uplink subframe in the first uplink and downlink configuration in a wireless frame as a fixed uplink subframe; determining a subframe with the same subframe number as that of a downlink subframe in the second uplink and downlink configuration in a wireless frame as a fixed downlink subframe; and determining the subframe which is the same as the subframe number of the special subframe/DwPTS/UpPTS in the first uplink and downlink configuration or the second uplink and downlink configuration in the wireless frame as the special subframe/DwPTS/UpPTS.
For example, the uplink and downlink configurations with configuration indexes 2 and 0 in table 1 are selected, and it is known from table 1 that, in the uplink and downlink configurations with configuration index 2, the subframe numbers of the uplink subframe are 2 and 7, and the subframe with subframe numbers of 2 and 7 in the radio frame is determined as the fixed uplink subframe; in the uplink and downlink configuration with the configuration index of 0, the subframe numbers of the downlink subframes are 0 and 5, and the subframes with the subframe numbers of 0 and 5 in the wireless frame are determined as fixed downlink subframes; it should be understood that the determination of the special subframe/DwPTS/UpPTS in the radio frame may be performed according to the uplink and downlink configuration with the configuration index of 2, or according to the uplink and downlink configuration with the configuration index of 0, and when the uplink and downlink configuration with the configuration index of 2 is performed, the subframe with subframe numbers of 1 and 6 in the radio frame is determined to be the special subframe/DwPTS/UpPTS; and when the uplink and downlink configuration with the configuration index of 0 is carried out, determining that the subframe with the subframe numbers of 1 and 6 in the wireless frame is a special subframe/DwPTS/UpPTS.
Specifically, the determination may be further performed according to the following conditions: when the former subframe of the undetermined type in the wireless frame is a fixed uplink subframe or a special subframe/UpPTS, determining the subframe of the undetermined type as a dynamic subframe; and/or the presence of a gas in the gas,
and when the subframe behind the subframe of the undetermined type in the wireless frame is a fixed downlink subframe or a special subframe/DwPTS, determining the subframe of the undetermined type as a dynamic subframe.
For example, according to the uplink and downlink configurations with configuration indexes of 2 and 0 in table 1, in a radio frame, the subframe with subframe numbers of 2 and 7 is determined as a fixed uplink subframe, the subframe with subframe numbers of 0 and 5 is determined as a fixed downlink subframe, and the subframe with subframe number of 1 is determined as a special subframe/DwPTS/UpPTS; subframes with subframe numbers 3, 4, 8, 9 are of undetermined type and are determined as dynamic subframes.
The special subframe comprises DwPTS, GP and UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; it should be understood that the subframe numbers corresponding to the fixed uplink subframe, the fixed downlink subframe, and the special subframe/DwPTS/UpPTS determined to be obtained do not coincide with each other.
here, the dynamic subframe may be configured as an uplink subframe for transmitting an uplink signal; the downlink subframe can also be configured to be used for transmitting downlink signals; it may also be configured not to transmit any signal;
when the dynamic subframe is configured as an uplink subframe, the previous subframe of the dynamic subframe is an uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the previous subframe is a fixed uplink subframe, a special subframe/UpPTS, or a dynamic subframe configured as an uplink subframe.
When the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a special subframe/DwPTS, or a dynamic subframe configured as a downlink subframe.
In the invention, after the base station sends the uplink and downlink configuration to the user terminal through the broadcast signaling or the terminal-specific signaling, the base station and the user terminal can respectively load the downlink signal and the uplink signal to be transmitted into the dynamic subframe of the fixed downlink subframe/configuration downlink subframe and the dynamic subframe of the fixed uplink subframe/configuration uplink subframe for transmission according to the uplink and downlink configuration; after receiving the signal sent by the base station, the user terminal can load a feedback signal into a fixed uplink subframe/a dynamic subframe configured as an uplink subframe according to the uplink and downlink configuration for feedback so as to inform the base station whether the correct reception of data is realized; the feedback signal is specifically a signal for feeding back a downlink signal transmitted by a fixed downlink subframe received by the user terminal.
The above configuration method is described in detail with reference to specific examples below:
example one
The base station sends uplink and downlink configuration with configuration index 0 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines a fixed downlink subframe and a special subframe in a wireless frame according to the uplink and downlink configuration; specifically, the subframes with the same subframe numbers as those of the downlink subframe and the special subframe in the uplink and downlink configuration with the configuration index of 0 in the radio frame are determined as the fixed downlink subframe and the special subframe, and then the subframes with the subframe numbers of 0 and 5 in the radio frame are the fixed downlink subframes, and the subframes with the subframe numbers of 1 and 6 are the special subframes;
similarly, the base station sends the uplink and downlink configuration with the configuration index of 2 in the table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines a fixed uplink subframe in the wireless frame according to the uplink and downlink configuration; specifically, a subframe with the same subframe number as that of an uplink subframe in uplink and downlink configuration with a configuration index of 2 in a radio frame is determined as a fixed uplink subframe, and then subframes with subframe numbers of 2 and 7 in the radio frame are fixed uplink subframes;
according to the above configuration, a subframe configuration of a radio frame as shown in fig. 4 can be obtained, in which,
represents a fixed downlink sub-frame and is,
represents a fixed uplink sub-frame and is,
which represents a special sub-frame, is,
represents a dynamic subframe; the subframes with the subframe numbers of 0 and 5 are fixed downlink subframes, the subframes with the subframe numbers of 2 and 7 are fixed uplink subframes, the subframes with the subframe numbers of 1 and 6 are special subframes, and the subframes with the subframe numbers of 3, 4, 8 and 9 are dynamic subframes;
furthermore, the dynamic subframe can be further configured with reference to the influence of factors such as communication load and the like; referring to fig. 4, for radio frame a, the dynamic subframes with subframe numbers 3 and 4 are further configured as uplink subframes for transmitting uplink signals, and the dynamic subframes with subframe numbers 8 and 9 are further configured as downlink subframes for transmitting downlink signals; for the radio frame a +1, the dynamic subframes with subframe numbers 3, 8, and 9 are further configured as uplink subframes for transmitting uplink signals, and the dynamic subframes with subframe number 4 are further configured as downlink subframes for transmitting downlink signals.
Example two
The base station sends uplink and downlink configuration with configuration index 3 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines a fixed downlink subframe in a wireless frame according to the uplink and downlink configuration; specifically, a subframe having the same subframe number as that of a downlink subframe in uplink and downlink configurations with a configuration index of 3 in a radio frame is determined as a fixed downlink subframe, and then subframes with subframe numbers of 0, 5, 6, 7, 8, and 9 in the radio frame are fixed downlink subframes;
similarly, the base station sends the uplink and downlink configuration with the configuration index of 5 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines the fixed uplink subframe and the special subframe in the wireless frame according to the uplink and downlink configuration; specifically, the subframe in the radio frame, which is the same as the subframe number of the uplink subframe and the special subframe in the uplink and downlink configuration with the configuration index of 5, is determined as a fixed uplink subframe and a special subframe, and then in the radio frame, the subframe with the subframe number of 2 is the fixed uplink subframe, and the subframe with the subframe number of 1 is the special subframe;
according to the above-described configuration,a subframe configuration of a radio frame as shown in fig. 5 can be obtained, in which,
represents a fixed downlink sub-frame and is,
represents a fixed uplink sub-frame and is,
which represents a special sub-frame, is,
represents a dynamic subframe; subframes with subframe numbers of 0, 5, 6, 7, 8 and 9 are fixed downlink subframes, subframes with subframe numbers of 2 are fixed uplink subframes, subframes with subframe numbers of 1 are special subframes, and subframes with subframe numbers of 3 and 4 are dynamic subframes;
furthermore, the dynamic subframe can be further configured with reference to the influence of factors such as communication load and the like; referring to fig. 5, for radio frame a, the subframe number 3 dynamic subframe is further configured as an uplink subframe for transmitting uplink signals, and the subframe number 4 dynamic subframe is further configured as a downlink subframe for transmitting downlink signals; for the radio frame a +1, the subframe numbers 3 and 4 are further configured as uplink subframes for transmitting uplink signals.
EXAMPLE III
The base station sends uplink and downlink configuration with configuration index 3 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines a fixed downlink subframe in a wireless frame according to the uplink and downlink configuration; specifically, a subframe having the same subframe number as that of a downlink subframe in uplink and downlink configurations with a configuration index of 3 in a radio frame is determined as a fixed downlink subframe, and then subframes with subframe numbers of 0, 5, 6, 7, 8, and 9 in the radio frame are fixed downlink subframes;
similarly, the base station sends the uplink and downlink configuration with the configuration index of 5 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling, and the user terminal determines the fixed uplink subframe and the special subframe in the wireless frame according to the uplink and downlink configuration; specifically, the subframe in the radio frame, which is the same as the subframe number of the uplink subframe and the special subframe in the uplink and downlink configuration with the configuration index of 5, is determined as a fixed uplink subframe and a special subframe, and then in the radio frame, the subframe with the subframe number of 2 is the fixed uplink subframe, and the subframe with the subframe number of 1 is the special subframe;
according to the above configuration, a subframe configuration of a radio frame as shown in fig. 6 can be obtained, in which,
represents a fixed downlink sub-frame and is,
represents a fixed uplink sub-frame and is,
which represents a special sub-frame, is,
represents a dynamic subframe; subframes with subframe numbers of 0, 5, 6, 7, 8 and 9 are fixed downlink subframes, subframes with subframe numbers of 2 are fixed uplink subframes, subframes with subframe numbers of 1 are special subframes, and subframes with subframe numbers of 3 and 4 are dynamic subframes;
furthermore, the dynamic subframe can be further configured with reference to the influence of factors such as communication load and the like; referring to fig. 6, for radio frame a, the subframe number 3 dynamic subframe is further configured as an uplink subframe for transmitting uplink signals, and the subframe number 4 dynamic subframe is further configured as a downlink subframe for transmitting downlink signals; for radio frame a +1, the dynamic subframes with subframe numbers 3, 4 are not further configured and are not used to transmit any signal.
Example four
The base station sends the uplink and downlink configuration with the uplink and downlink configuration index of 0 in table 1 to the user terminal through a broadcast signaling or a terminal-specific signaling. The base station informs the user that the indexes of the dynamic subframes are 3, 4, 8 and 9 through a broadcast signaling or a terminal-specific signaling; subframes other than the dynamic subframe are 0, 1, 2, 5, 6, 7. The user judges the attributes of the subframes except the dynamic subframe as follows according to the subframe attributes specified in the uplink and downlink configuration index 0: subframes 0, 5 are fixed downlink subframes, 1, 6 are special subframes, 2, 7 are fixed uplink subframes
According to the above configuration, a subframe configuration of a radio frame as shown in fig. 4 can be obtained, in which,
represents a fixed downlink sub-frame and is,
represents a fixed uplink sub-frame and is,
which represents a special sub-frame, is,
represents a dynamic subframe; the subframes with the subframe numbers of 0 and 5 are fixed downlink subframes, the subframes with the subframe numbers of 2 and 7 are fixed uplink subframes, the subframes with the subframe numbers of 1 and 6 are special subframes, and the subframes with the subframe numbers of 3, 4, 8 and 9 are dynamic subframes;
furthermore, the dynamic subframe can be further configured with reference to the influence of factors such as communication load and the like; referring to fig. 4, for radio frame a, the dynamic subframes with subframe numbers 3 and 4 are further configured as uplink subframes for transmitting uplink signals, and the dynamic subframes with subframe numbers 8 and 9 are further configured as downlink subframes for transmitting downlink signals; for the radio frame A +1, the dynamic subframes with subframe numbers of 3, 8 and 9 are further configured as uplink subframes for transmitting uplink signals; the subframe number of the dynamic subframe is 4 is further configured as a downlink subframe for transmitting downlink signals;
EXAMPLE five
The base station informs the user terminal that the subframes 0 and 5 are fixed downlink subframes, the subframes 1 and 6 are special subframes, and the subframes 2 and 7 are fixed uplink subframes through a broadcast signaling or a terminal special signaling. The user terminal can judge the remaining subframes 3, 4, 8 and 9 as dynamic subframes
According to the above configuration, a subframe configuration of a radio frame as shown in fig. 4 can be obtained, in which,
represents a fixed downlink sub-frame and is,
represents a fixed uplink sub-frame and is,
which represents a special sub-frame, is,
represents a dynamic subframe; the subframes with the subframe numbers of 0 and 5 are fixed downlink subframes, the subframes with the subframe numbers of 2 and 7 are fixed uplink subframes, the subframes with the subframe numbers of 1 and 6 are special subframes, and the subframes with the subframe numbers of 3, 4, 8 and 9 are dynamic subframes;
furthermore, the dynamic subframe can be further configured with reference to the influence of factors such as communication load and the like; referring to fig. 4, for radio frame a, the dynamic subframes with subframe numbers 3 and 4 are further configured as uplink subframes for transmitting uplink signals, and the dynamic subframes with subframe numbers 8 and 9 are further configured as downlink subframes for transmitting downlink signals; for the radio frame A +1, the dynamic subframes with subframe numbers of 3, 8 and 9 are further configured as uplink subframes for transmitting uplink signals; the subframe number of the dynamic subframe is 4 is further configured as a downlink subframe for transmitting downlink signals;
fig. 7 shows a schematic structure of an apparatus for monitoring subframes of a communication system according to the present invention, and as shown in fig. 7, the apparatus includes a transmitting unit 71, a subframe type determining unit 72; wherein the content of the first and second substances,
a transmission unit 71 that transmits information indicating a subframe configuration; a subframe type determining unit 72, configured to determine a type of a subframe in a radio frame according to the received information indicating the subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes.
Further, the information for indicating the subframe configuration sent by the sending unit is uplink and downlink configuration, or uplink and downlink configuration and a control signaling for indicating a dynamic subframe, or a signaling for indicating a fixed uplink subframe, a fixed downlink subframe and a special subframe;
further, the subframe type determining unit 72 is specifically configured to determine a dynamic subframe in a radio frame according to the received control signaling for indicating the dynamic subframe; determining the rest subframes in the wireless frame as one or more of fixed uplink subframes, fixed downlink subframes and special subframes according to the received uplink and downlink configuration; the control signaling for indicating the dynamic subframe is a broadcast signaling or a terminal-specific signaling, where the broadcast signaling is a signaling sent by the base station to all the user terminals; terminal-specific signaling refers to signaling sent by a base station to a certain user terminal or group of user terminals. .
Preferably, the subframe type determining unit 72 is specifically configured to determine an intersection of subframe configurations in the received at least two uplink and downlink configurations as a dynamic subframe; determining subframes except a fixed uplink subframe, a fixed downlink subframe and a special subframe in a wireless frame as dynamic subframes according to received uplink and downlink configuration or signaling for indicating the fixed uplink subframe, the fixed downlink subframe and the special subframe;
here, the subframe type determining unit 72 is further configured to determine a subframe in a radio frame, which is the same as a subframe number of an uplink subframe in the first uplink and downlink configuration, as a fixed uplink subframe; determining a subframe with the same subframe number as that of a downlink subframe in the second uplink and downlink configuration in a wireless frame as a fixed downlink subframe; and determining the subframe which is the same as the subframe number of the special subframe/DwPTS/UpPTS in the first uplink and downlink configuration or the second uplink and downlink configuration in the wireless frame as the special subframe/DwPTS/UpPTS.
Here, the subframe type determining unit 71 is further configured to determine the subframe of the undetermined type as a dynamic subframe when a subframe preceding the subframe of the undetermined type in the radio frame is a fixed uplink subframe or a special subframe/UpPTS; and/or when the subframe behind the subframe of the undetermined type in the wireless frame is a fixed downlink subframe or a special subframe/DwPTS, determining the subframe of the undetermined type as a dynamic subframe.
Preferably, the sending unit 71 is specifically configured to send the first uplink and downlink configuration and/or the second uplink and downlink configuration through a broadcast signaling or a terminal-specific signaling; the subframe number of the uplink subframe and/or the special subframe/UpPTS in the first or second uplink and downlink configuration information sent by the broadcast signaling or the terminal-specific signaling can be determined as the subframe number of the fixed uplink subframe and/or the special subframe/UpPTS determined in the wireless frame; the subframe number of the downlink subframe and/or the special subframe/DwPTS in the first or second uplink and downlink configuration information sent by the broadcast signaling or the terminal-specific signaling may be determined as the subframe number of the fixed downlink subframe and/or the special subframe/DwPTS determined in the radio frame.
The apparatus may further include a dynamic subframe configuration unit 73, configured to further configure the determined dynamic subframe according to a preset condition.
Further, the dynamic subframe configuration unit 73 is specifically configured to, when a previous subframe of the dynamic subframe is an uplink subframe, determine that the previous subframe of the dynamic subframe is the uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the former subframe is a fixed uplink subframe, a special subframe/UpPTS or a dynamic subframe configured as an uplink subframe; when the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a special subframe/DwPTS, or a dynamic subframe configured as a downlink subframe.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (7)
1. A method for monitoring subframes in a communication system, the method comprising:
a user terminal receives information used for indicating subframe configuration from a base station;
the user terminal determines the type of the subframe in the wireless frame according to the information for indicating the subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes;
when the information for indicating the subframe configuration received by the user terminal is a signaling for indicating a fixed uplink subframe, a fixed downlink subframe and a special subframe, the type of the subframe in the determined radio frame is as follows: the user terminal determines subframes except fixed uplink subframes, fixed downlink subframes and special subframes in a wireless frame as dynamic subframes; the special subframe comprises a downlink pilot time slot DwPTS, a guard interval GP and an uplink pilot time slot UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; the dynamic subframe is used for transmitting an uplink signal, a downlink signal or no signal;
the former subframe of the dynamic subframe is a fixed uplink subframe or a UpPTS, and the latter subframe of the dynamic subframe is a fixed downlink subframe or a DwPTS.
2. The method of claim 1, further comprising:
and the user terminal further configures the determined dynamic subframe according to a preset condition.
3. The method according to claim 2, wherein the ue further configures, according to a preset condition, the determined dynamic subframe as:
when the dynamic subframe is configured as an uplink subframe, the previous subframe of the dynamic subframe is an uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the previous subframe is a fixed uplink subframe, a UpPTS in a special subframe, or a dynamic subframe configured as an uplink subframe.
4. The method according to claim 2, wherein the ue further configures, according to a preset condition, the determined dynamic subframe as:
when the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a DwPTS in a special subframe, or a dynamic subframe configured as a downlink subframe.
5. An apparatus for monitoring subframes in a communication system, the apparatus comprising: a receiving unit and a subframe type determining unit; wherein the content of the first and second substances,
a receiving unit configured to receive information indicating a subframe configuration;
a subframe type determining unit, configured to determine a type of a subframe in a radio frame according to the received information indicating subframe configuration; the types of the subframes comprise one or more of fixed uplink subframes, fixed downlink subframes, special subframes and dynamic subframes; the wireless frame is also used for determining subframes except the fixed uplink subframe, the fixed downlink subframe and the special subframe in the wireless frame as dynamic subframes according to the signaling for indicating the fixed uplink subframe, the fixed downlink subframe and the special subframe; the special subframe comprises a downlink pilot time slot DwPTS, a guard interval GP and an uplink pilot time slot UpPTS; the fixed uplink subframe and the UpPTS are used for fixedly transmitting an uplink signal, and the fixed downlink subframe and the DwPTS are used for fixedly transmitting a downlink signal; the dynamic subframe is used for transmitting an uplink signal, a downlink signal or no signal; the former subframe of the dynamic subframe is a fixed uplink subframe or a UpPTS, and the latter subframe of the dynamic subframe is a fixed downlink subframe or a DwPTS.
6. The apparatus of claim 5, further comprising: and the dynamic subframe configuration unit is used for further configuring the determined dynamic subframes according to preset conditions.
7. The apparatus according to claim 5, wherein the dynamic subframe configuring unit is specifically configured to, when a dynamic subframe is configured as an uplink subframe, determine that a subframe preceding the dynamic subframe is an uplink subframe; wherein, the uplink subframe of the previous subframe is specifically: the former subframe is a fixed uplink subframe, a UpPTS in a special subframe or a dynamic subframe configured as an uplink subframe; when the dynamic subframe is configured as a downlink subframe, the subsequent subframe of the dynamic subframe is a downlink subframe; wherein, the following subframe is a downlink subframe specifically: the latter subframe is a fixed downlink subframe, a DwPTS in a special subframe, or a dynamic subframe configured as a downlink subframe.
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| EP3716712B1 (en) * | 2013-02-22 | 2022-05-04 | Huawei Technologies Co., Ltd. | Method and device for generating subframe, method for determining subframe and user equipment |
| CN105229938B (en) * | 2013-04-14 | 2018-06-29 | Lg 电子株式会社 | The method and apparatus of control monitoring sequential in a wireless communication system |
| WO2014172876A1 (en) * | 2013-04-25 | 2014-10-30 | 华为技术有限公司 | Method for transmitting uplink signal, user equipment and network device |
| EP2995106B1 (en) * | 2013-05-09 | 2020-07-01 | Nokia Solutions and Networks Oy | Method, apparatus and computer program for wireless communications |
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| CN101431362B (en) * | 2007-11-08 | 2012-10-03 | 电信科学技术研究院 | Subframe distribution method and apparatus for TDD system |
| GB0721763D0 (en) * | 2007-11-06 | 2007-12-19 | Fujitsu Ltd | Frame structure for a wireless communication system |
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