CN107306451B - User equipment and uplink data transmission method, base station and uplink scheduling method - Google Patents
User equipment and uplink data transmission method, base station and uplink scheduling method Download PDFInfo
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- CN107306451B CN107306451B CN201610255929.8A CN201610255929A CN107306451B CN 107306451 B CN107306451 B CN 107306451B CN 201610255929 A CN201610255929 A CN 201610255929A CN 107306451 B CN107306451 B CN 107306451B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The uplink data transmission method comprises the following steps: receiving and storing more than two types of uplink scheduling parameter configuration information sent by a base station; receiving an MAC layer control signaling sent by the base station, and analyzing uplink scheduling parameter configuration information selected by the base station from the more than two uplink scheduling parameter configuration information from the MAC layer control signaling or the downlink control signaling; and when available unauthorized frequency resources are monitored, adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resources. By the scheme, the user equipment can successfully use the unauthorized frequency resource to transmit uplink data, and the utilization rate of the wireless resource is improved.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a user equipment, an uplink data transmission method, a base station, and an uplink scheduling method.
Background
The L TE System introduces key technologies such as Orthogonal Frequency Division Multiplexing (OFDM) and multiple-Input multiple-Output (MIMO), significantly increases spectral efficiency and data transmission rate, and supports various bandwidth allocations, such as 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz, and supports mainstream 2G/3G bands and some new frequency bands, thus significantly increasing spectrum allocation, and more significantly reducing network coverage, and reducing network overhead, and reducing network overhead cost.
In the prior art, L TE system can use licensed (licensed) frequency resource for data transmission, but licensed frequency resource is very scarce, so operators begin to consider fully utilizing unlicensed (unlicensed) frequency resource, such as 5GHz frequency resource, to perform data transmission, Before using 5GHz frequency resource, User Equipment (UE) needs to adopt a listen-Before-Talk or listen-Before-Talk (L listen Talk, L BT) mechanism to monitor whether other UE, such as W L AN, is using unlicensed frequency resource, if the channel is busy, wait is needed, if the channel is idle, it can use for a while, such as using unlicensed frequency resource of 4ms at most in japan, when this usage is completed, the UE needs to release the unlicensed frequency resource, and then re-acquire the right of using next unlicensed frequency resource.
The UE may also use the unlicensed frequency resource for uplink data transmission, but the UE needs to use the scheduling party of the base station, so that the UE basically cannot use the right to use the acquired frequency due to the listen-before-talk mechanism, thereby wasting the radio resource.
Disclosure of Invention
The technical problem solved by the invention is how to realize that the user equipment successfully uses the unauthorized frequency resource to transmit uplink data, and improve the utilization rate of wireless resources.
To solve the foregoing technical problem, an embodiment of the present invention provides an uplink data transmission method, including: receiving and storing more than two types of uplink scheduling parameter configuration information sent by a base station; receiving an MAC layer control signaling or a downlink control signaling sent by the base station, and analyzing uplink scheduling parameter configuration information selected by the base station from the more than two uplink scheduling parameter configuration information from the MAC layer control signaling or the downlink control signaling; and when available unauthorized frequency resources are monitored, adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resources.
Optionally, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to the uplink scheduling parameter configuration information selected by the base station.
Optionally, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
Optionally, the uplink scheduling parameter configuration information further includes at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
Optionally, the method further comprises: and when the number of the subframes used by the uplink data needing to be transmitted is determined to be less than the maximum continuous subframe number of the uplink transmission, releasing the unauthorized frequency resources when the uplink data is transmitted.
Optionally, the performing uplink data transmission by using the selected uplink scheduling parameter configuration information and the unlicensed frequency resource includes: and when available unauthorized frequency resources are monitored and the next MAC layer control signaling or downlink control signaling is not received, continuously adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the monitored unauthorized frequency resources.
The embodiment of the invention also provides an uplink scheduling method, which comprises the following steps: generating more than two types of uplink scheduling parameter configuration information and sending the uplink scheduling parameter configuration information to user equipment, wherein the uplink scheduling parameter configuration information comprises information of configuration parameters used when the user equipment uses an unlicensed frequency resource to perform uplink data transmission; and transmitting uplink scheduling parameter configuration information selected from the more than two uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that the user equipment adopts the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unauthorized frequency resource when acquiring the unauthorized frequency resource.
Optionally, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to the selected uplink scheduling parameter configuration information.
Optionally, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
Optionally, the uplink scheduling parameter configuration information further includes at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
An embodiment of the present invention further provides a user equipment, including: the configuration information receiving and storing unit is suitable for receiving and storing more than two types of uplink scheduling parameter configuration information sent by the base station; a configuration information obtaining unit, adapted to receive the MAC layer control signaling or the downlink control signaling sent by the base station, and analyze, from the MAC layer control signaling or the downlink control signaling, the uplink scheduling parameter configuration information selected by the base station from the two or more uplink scheduling parameter configuration information; and the uplink data transmission unit is suitable for adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resource when the available unauthorized frequency resource is monitored.
Optionally, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to the uplink scheduling parameter configuration information selected by the base station.
Optionally, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
Optionally, the uplink scheduling parameter configuration information further includes at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
Optionally, the uplink data transmission unit is further adapted to release the unlicensed frequency resource when the uplink data is completely transmitted when it is determined that the number of subframes used by the uplink data to be transmitted is smaller than the maximum continuous number of subframes of the uplink transmission.
Optionally, the uplink data transmission unit is adapted to, when monitoring a usable unlicensed frequency resource and when not receiving a next MAC layer control signaling or a next downlink control signaling, continuously adopt the selected uplink scheduling parameter configuration information, and perform uplink data transmission through the monitored unlicensed frequency resource.
An embodiment of the present invention further provides a base station, including: a configuration information generating and sending unit, adapted to generate and send more than two types of uplink scheduling parameter configuration information to a user equipment, where the uplink scheduling parameter configuration information includes information of configuration parameters used when the user equipment uses an unlicensed frequency resource for uplink data transmission; the configuration information selecting unit transmits uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that the user equipment adopts the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unlicensed frequency resource when monitoring a usable unlicensed frequency resource.
Optionally, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to the selected uplink scheduling parameter configuration information.
Optionally, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
Optionally, the uplink scheduling parameter configuration information further includes at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the above scheme, the base station sends the uplink scheduling parameter configuration information used when the user equipment uses the unlicensed frequency resource to perform uplink data transmission to the user equipment in advance, and quickly sends one uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information to the user equipment through the MAC layer control signaling or the downlink control signaling, so that the user equipment can use the uplink scheduling parameter configuration information selected by the MAC layer control signaling to perform uplink data transmission.
Further, the base station uses the uplink scheduling parameter configuration information sent by the MAC layer control signaling or the downlink control signaling as the identification information corresponding to the selected uplink scheduling parameter configuration information, so that the number of bits used by the MAC layer control signaling can be saved, and further resources can be further saved.
Further, when the user equipment uses the unlicensed frequency resources to perform uplink data transmission, and when the number of subframes used by the transmitted uplink data is less than the maximum continuous number of subframes of uplink transmission in the uplink scheduling parameter configuration information selected by the base station, the monitored unlicensed frequency resources are released when the corresponding uplink data is transmitted, so that the radio resources can be further saved.
Drawings
Fig. 1 is a flowchart illustrating an uplink data transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart of an uplink scheduling method according to an embodiment of the present invention;
fig. 3 is a signaling flow diagram between a base station and a user equipment according to an embodiment of the present invention;
fig. 4 is a signaling flow diagram between a base station and a user equipment according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a user equipment in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station in an embodiment of the present invention.
Detailed Description
As described in the background, L TE is always deployed in authorized (licensed) frequency resources owned by AN operator, but the authorized frequency resources are scarce, so the operator starts to consider fully utilizing unauthorized (unlicensed) frequency resources, such as 5GHz frequency resources, for data transmission, Before using the 5GHz frequency resources, the User Equipment (UE) needs to adopt a mechanism of listening Before speaking (L actual Before Talk, L BT), to monitor whether other user equipment, such as W L AN, is using the unauthorized frequency resources, if it is determined that channels on the unauthorized frequency are in a busy state, it needs to wait, and if it is determined that channels on the unauthorized frequency are in AN idle state, it can use the unauthorized frequency resources for a while.
However, because the time for using the frequency is short, such as 4ms of japan, if the existing uplink scheduling mechanism is used, assuming that the base station can know that the user equipment can perform uplink transmission on the unlicensed frequency resource at a certain time, the base station also needs to make a corresponding uplink scheduling decision and send the made uplink scheduling decision to the user equipment, and usually the uplink scheduling decision can not reach the user equipment after 4ms, which will cause the UE to basically not use the right of use of the obtained frequency, and waste of radio resources.
In order to solve the above problem, in the embodiments of the present invention, the base station sends, to the user equipment, the uplink scheduling parameter configuration information used when the user equipment uses the unlicensed frequency resource to perform uplink data transmission in advance, so that the user equipment directly uses the uplink scheduling parameter configuration information sent by the base station to perform uplink data transmission when monitoring the usable unlicensed frequency resource, and does not need to perform uplink scheduling by the base station when monitoring the unlicensed frequency resource, which can achieve that the user equipment successfully uses the monitored unlicensed frequency resource to perform uplink data transmission, and improve the utilization rate of the radio resource.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a schematic diagram illustrating an uplink data transmission method in an embodiment of the present invention. Referring to fig. 1, in a specific implementation, the uplink data transmission method in the embodiment of the present invention may include the following steps:
step S101: and receiving and storing more than two types of uplink scheduling parameter configuration information sent by the base station.
In a specific implementation, the uplink scheduling parameter configuration information includes information of a configuration parameter used when performing uplink data transmission through an unlicensed frequency resource.
It should be noted that, before configuring the user equipment to use the unlicensed frequency Resource, the base station already accesses the base station through the licensed frequency Resource by the base station, and establishes a Radio Resource control connection (RRC connection).
In a specific implementation, the uplink scheduling parameter configuration information received by the ue may be sent by the base station through the authorized frequency resource or may be sent through the unlicensed frequency resource.
Step S102: and receiving an MAC layer control signaling or a downlink control signaling (downlink control Information) sent by the base station, and analyzing uplink scheduling parameter configuration Information selected by the base station from the two or more uplink scheduling parameter configuration Information from the MAC layer control signaling or the downlink control signaling.
In a specific implementation, the transmission delay of the MAC control signaling or the downlink control signaling is short, and the base station may determine whether to send the MAC layer control signaling or the downlink control signaling according to HARQ information for uplink data transmission performed by the user equipment using the unlicensed frequency resource before, so as to adjust uplink scheduling parameter configuration information used for uplink data transmission performed by the user equipment using the unlicensed frequency resource. For example, when the base station determines that the user equipment uses the unlicensed frequency resources to perform uplink data transmission feedback before, when the base station determines that there is a lot of non-acknowledgement (NACK) information in Hybrid Automatic Repeat reQuest (HARQ) information, it indicates that uplink scheduling parameter information used for uplink data transmission through the unlicensed frequency resources before cannot meet the requirement of uplink data transmission, and at this time, the user equipment may select other uplink scheduling parameter configuration information through the MAC layer control signaling or the downlink control signaling, so that when the user equipment monitors the unlicensed frequency resources later, the user equipment uses the newly selected uplink scheduling parameter configuration information to perform uplink data transmission. When the ue uses the unlicensed frequency resource for the first time, the base station may randomly select one uplink scheduling parameter configuration information for the ue.
It should be noted that, the downlink control signaling is a physical layer control signaling, and because the transmission delay of the physical layer control signaling is short, the base station can dynamically and quickly adjust the uplink scheduling parameter configuration information used by the user for uplink data transmission by using the obtained unlicensed frequency resource, so as to improve the reliability of the uplink data transmitted by the user equipment by using the unlicensed frequency resource.
Step S103: and when available unauthorized frequency resources are monitored, adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resources.
In a specific implementation, the user equipment may monitor the unlicensed frequency through the L BT mechanism, wherein the user equipment may determine whether the unlicensed frequency resource is available through a channel signal strength on the unlicensed frequency resource, that is, when it is determined that the detected signal strength is less than a preset threshold value, it indicates that the detected unlicensed frequency resource is in an idle state, and otherwise, it indicates that the unlicensed frequency resource is in a busy state, and it is required to wait for a period of time for the user to be available.
According to the scheme, when the user equipment monitors available unauthorized frequency resources, the uplink scheduling parameter configuration information analyzed from the MAC layer control signaling or the downlink control signaling sent by the base station can be used, and uplink data is transmitted through the monitored unauthorized frequency resources.
Fig. 2 is a flowchart illustrating another uplink scheduling method in the embodiment of the present invention. Referring to fig. 2, in a specific implementation, the uplink scheduling method in the embodiment of the present invention may include the following steps:
step S201: and generating more than two types of uplink scheduling parameter configuration information and sending the configuration information to the user equipment.
In a specific implementation, the base station may generate, according to actual needs, more than two types of uplink scheduling parameter configuration information used when the user equipment uses the unlicensed frequency resource for uplink data transmission.
Step S202: and transmitting uplink scheduling parameter configuration information selected from the more than two uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that the user equipment uses the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unauthorized frequency resource when obtaining the unauthorized frequency resource.
In a specific implementation, a base station may send generated more than two types of uplink scheduling parameter configuration information to a user equipment through an RRC signaling, send uplink scheduling parameter configuration information selected from the more than two types of uplink scheduling parameter configuration information to the user equipment through an MAC layer control signaling or a downlink control signaling, so that the user equipment may receive and analyze the uplink scheduling parameter configuration information selected by the base station through the MAC layer control signaling or the downlink control signaling, and quickly obtain the uplink scheduling parameter configuration information selected by the base station, and transmit uplink data through a monitored unlicensed frequency resource when monitoring a usable unlicensed frequency resource, so that the user equipment may quickly obtain the uplink scheduling parameter configuration information selected from the more than two types of uplink scheduling parameter configuration information by the base station due to a short transmission delay of the MAC layer control signaling or the downlink control signaling, therefore, the successful use of the monitored unauthorized frequency resources can be realized, the utilization rate of the wireless resources can be improved, and the wireless resources are saved.
In the following, a signaling interaction between the ue and the base station in the embodiment of the present invention will be described in more detail by combining an uplink data transmission method and an uplink scheduling method of the ue in the embodiment of the present invention.
Referring to fig. 3, in a specific implementation, an interaction process between a base station and a user equipment in how the user equipment monitors an unlicensed frequency resource for uplink data transmission may include the following steps:
step S301: and the base station generates more than two corresponding uplink scheduling parameter configuration information and sends the configuration information to the user equipment.
In an embodiment of the present invention, the base station may add the generated two or more uplink scheduling parameter configuration information to a Radio Resource Control (RRC) signaling, and send the RRC signaling to the user equipment, so that the user equipment may receive and store the two or more uplink scheduling parameter configuration information.
In a specific implementation, the uplink scheduling parameter configuration information may include at least one of uplink physical resource block allocation information and modulation and coding format information. In other embodiments, the uplink scheduling parameter configuration information may further include at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
Step S302: the user equipment receives and stores more than two types of uplink scheduling parameter configuration information sent by the base station.
In a specific implementation, when receiving the RRC signaling sent by the base station, the ue may analyze the RRC signaling to obtain and store two or more corresponding uplink scheduling parameter configuration information, and when monitoring a usable unlicensed frequency resource, may configure corresponding uplink data using one of the stored uplink scheduling parameter configuration information and transmit the corresponding uplink data to the base station.
Step S303: and the base station transmits the uplink scheduling parameter configuration information selected from the more than two uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that the user equipment adopts the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unauthorized frequency resource when monitoring the available unauthorized frequency resource.
In a specific implementation, the base station may indicate, to the user equipment, uplink scheduling parameter configuration information used when the monitored unlicensed frequency resource is used to transmit uplink data, in a manner of sending an MAC layer control signaling or a downlink control signaling to the user equipment. Because the MAC layer control signaling or the downlink control signaling does not need to be subjected to operations such as packet division, segmentation, encryption and the like RRC signaling, the transmission delay of the signaling can be shortened, and the base station can also send the MAC layer control signaling or the downlink control signaling to the user equipment through authorized frequency resources, so that the user equipment can quickly and reliably acquire the uplink scheduling parameter configuration information selected by the base station.
On the other hand, in this way, the base station can also adjust the data transmission of the user equipment on the unlicensed frequency faster according to the signal strength detected on the unlicensed frequency by the base station itself and the error rate of the received uplink data transmitted by the user equipment, and the like, and can improve the reliability of the uplink data transmitted by using the unlicensed frequency resources.
Step S304: and the user equipment receives the MAC layer control signaling or the downlink control signaling, analyzes the uplink scheduling parameter configuration information selected by the base station from the MAC layer control signaling or the downlink control signaling when monitoring available unauthorized frequency resources, and transmits uplink data through the monitored unauthorized frequency resources.
In a specific implementation, the ue may, when receiving the MAC layer control signaling or the downlink control signaling, analyze the received MAC layer control signaling or the downlink control signaling to obtain one uplink scheduling parameter configuration information selected by the base station from the two or more uplink scheduling parameter configuration information, and transmit uplink data through the monitored available unlicensed frequency resources by using the uplink scheduling parameter configuration information obtained through the analysis, so as to implement successful use of the unlicensed frequency resources.
For example, when the uplink scheduling parameter configuration information selected by the base station through the MAC layer control signaling or the downlink control signaling includes uplink physical resource block allocation information, modulation coding format information, uplink transmission power control information, and maximum consecutive subframe number information of uplink transmission, the user equipment uses the uplink scheduling parameter configuration information sent by the base station and performs uplink data transmission through the monitored unlicensed frequency resource, that is, the user equipment uses the uplink physical resource block specified in the uplink scheduling parameter configuration information and performs uplink data transmission according to the specified modulation coding format and power control parameter.
In an embodiment of the present invention, when the ue monitors the unlicensed frequency resource and does not receive a next MAC layer control signaling or a downlink control signaling, that is, a new MAC layer control signaling or a new downlink control signaling, sent by the base station, the ue may continuously use the uplink scheduling parameter configuration information in the currently received MAC layer control signaling or downlink control signaling to perform uplink data transmission through the monitored unlicensed frequency resource.
In an embodiment of the present invention, when the uplink scheduling parameter configuration information includes information of a maximum continuous subframe number of uplink transmission, and the user equipment monitors that the number of subframes required to be used by uplink data transmitted by the unlicensed frequency resource is smaller than the maximum continuous subframe number of the uplink transmission, that is, the data amount of the uplink data required to be transmitted by the user equipment is smaller than the data amount allowed to be transmitted by the maximum continuous subframe number of the uplink transmission, the user equipment may release the monitored unlicensed frequency resource when the uplink data transmission is completed, that is, release the unlicensed frequency resource in advance, so that other devices may use the uplink data instead of continuously occupying the monitored unlicensed frequency resource for a period of time when the data transmission is completed, thereby saving radio resources and improving the utilization rate of the radio resources.
In a specific implementation, in order to further save signaling resources between the base station and the user equipment, the base station may generate more than two types of uplink scheduling parameter configuration information, and send the uplink scheduling parameter configuration information and corresponding identification information to the user equipment, and then the base station may send an MAC layer control signaling or a downlink control signaling to the user equipment to send the identification information corresponding to the selected uplink scheduling parameter configuration information to the user equipment, so that the user equipment may use the uplink scheduling parameter configuration information corresponding to the identification information analyzed from the MAC layer control signaling or the downlink control signaling, and perform uplink data transmission through the monitored unlicensed frequency resources when the usable unlicensed frequency resources are monitored, specifically refer to fig. 4.
Referring to fig. 4, in a specific implementation, another interactive process of the base station and the user equipment in a process that the user equipment monitors the unlicensed frequency resource for uplink data transmission may include the following steps:
step S401: and the base station generates more than two corresponding uplink scheduling parameter configuration information and corresponding identification information and sends the configuration information and the corresponding identification information to the user equipment.
In an embodiment of the present invention, the base station may establish a one-to-one correspondence relationship between two types of uplink scheduling parameter configuration information and the identifier, and add the two types of uplink scheduling parameter configuration information and the corresponding identifier information to the RRC signaling and send the RRC signaling to the user equipment, so that the user equipment may receive and store more than two types of uplink scheduling parameter configuration information and corresponding identifier information.
In a specific implementation, when the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information. In other embodiments, the uplink scheduling parameter configuration information may further include at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
Step S402: and the user equipment receives and stores more than two types of uplink scheduling parameter configuration information and corresponding identification information sent by the base station.
In a specific implementation, when receiving the RRC signaling sent by the base station, the ue may analyze and store two or more corresponding uplink scheduling parameter configuration information and identification information corresponding to the uplink scheduling parameter configuration information from the RRC signaling, so that when monitoring available unlicensed frequency resources, the ue may configure and transmit corresponding uplink data to the base station using the uplink scheduling parameter configuration information selected by the base station through MAC layer control information or downlink control signaling.
Step S403: and the base station transmits the identification information corresponding to the uplink scheduling parameter configuration information selected from the more than two uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment.
In a specific implementation, the base station may add, according to an actual need, identification information corresponding to one uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information to a MAC layer Control signaling (Control Element) or a downlink Control signaling, and send the MAC layer Control signaling or the downlink Control signaling to the user equipment. Compared with the corresponding uplink scheduling parameter configuration information, the length of the corresponding identification information is smaller, so that the resources occupied by the MAC layer control signaling or the downlink control signaling can be saved, and further, the wireless resources can be saved.
On the other hand, by sending the MAC layer control signaling or the downlink control signaling to the ue, the ue can quickly adjust the uplink scheduling parameter configuration information used by the ue for uplink data transmission using the monitored unlicensed frequency resource, that is, the base station can quickly adjust the uplink scheduling parameter configuration information used by the ue for uplink data transmission on the unlicensed frequency according to the signal strength detected by the base station itself on the unlicensed frequency, the error rate of the received uplink data transmitted by the ue, and the like, so as to improve the reliability of the uplink data transmitted using the unlicensed frequency resource.
Step S404: and the user equipment receives the MAC layer control signaling or the downlink control signaling, adopts uplink scheduling parameter configuration information corresponding to the identification analyzed from the MAC layer control signaling or the downlink control signaling when monitoring available unauthorized frequency resources, and carries out uplink data transmission by monitoring the unauthorized frequency resources.
In a specific implementation, when receiving the MAC layer control signaling or the downlink control signaling sent by the base station, the ue may analyze corresponding identifier information from the MAC layer control signaling or the downlink control signaling, determine uplink scheduling parameter information corresponding to the analyzed identifier information according to a one-to-one correspondence relationship between two or more uplink scheduling parameter configuration information and identifiers analyzed from a previously received RRC signaling sent by the base station, and transmit uplink data through monitored usable unlicensed frequency resources using the determined uplink scheduling parameter configuration information, so as to achieve successful use of the unlicensed frequency resources.
For example, when the uplink scheduling parameter configuration information corresponding to the identifier sent by the base station through the MAC layer control signaling or the downlink control signaling includes uplink physical resource block allocation information, modulation and coding format information, uplink transmission power control information, and maximum continuous subframe number information of uplink transmission, the user equipment uses the uplink scheduling parameter configuration information sent by the base station and performs uplink data transmission through the monitored unlicensed frequency resource, that is, the user equipment can perform uplink data transmission on the uplink physical resource block specified in the uplink scheduling parameter configuration information according to the specified modulation and coding format and power control parameter.
Similarly, in an embodiment of the present invention, when the ue monitors the unlicensed frequency resource and does not receive the next MAC layer control signaling or downlink control signaling sent by the base station, that is, a new MAC layer control signaling or downlink control signaling, the ue may continuously use the uplink scheduling parameter configuration information in the currently received MAC layer control signaling or downlink control signaling to perform uplink data transmission through the monitored unlicensed frequency resource.
In a specific implementation, when the uplink scheduling parameter configuration information includes information of a maximum continuous subframe number of uplink transmission, and the user equipment monitors that the number of subframes used by uplink data transmitted by the unlicensed frequency resource is smaller than the maximum continuous subframe number of the uplink transmission, that is, the data amount of the uplink data required to be transmitted by the user equipment is smaller than the data amount allowed to be transmitted by the maximum continuous subframe number of the uplink transmission, the user equipment may release the monitored unlicensed frequency resource when the uplink data transmission is completed, that is, release the unlicensed frequency resource in advance, so that other devices can use the uplink data instead of continuously occupying the monitored unlicensed frequency resource for a period of time when the data transmission is completed, thereby saving radio resources and improving the utilization rate of the radio resources.
The corresponding apparatus of the above method will be described in further detail below.
Referring to fig. 5, in a specific implementation, a user equipment 500 in the embodiment of the present invention may include a configuration information receiving and storing unit 501, a configuration information obtaining unit 502, and an uplink data transmitting unit 503, where:
the configuration information receiving and storing unit 501 is adapted to receive and store more than two types of uplink scheduling parameter configuration information sent by the base station.
A configuration information obtaining unit 502, adapted to receive the MAC layer control signaling or the downlink control signaling sent by the base station, and analyze the uplink scheduling parameter configuration information selected by the base station from the two or more uplink scheduling parameter configuration information from the MAC layer control signaling or the downlink control signaling.
The uplink data transmission unit 503 is adapted to adopt the selected uplink scheduling parameter configuration information and perform uplink data transmission through the unlicensed frequency resource when monitoring a usable unlicensed frequency resource.
In a specific implementation, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to uplink scheduling parameter configuration information selected by the base station. In another embodiment, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
In an embodiment of the present invention, in order to improve the utilization rate of the unlicensed frequency resource, the uplink data transmission unit 503 is further adapted to release the unlicensed frequency resource when the uplink data is completely transmitted when it is determined that the number of subframes used by the uplink data to be transmitted is less than the maximum number of consecutive subframes of the uplink transmission.
In an embodiment of the present invention, the uplink data transmission unit 503 is adapted to continuously adopt the selected uplink scheduling parameter configuration information and perform uplink data transmission through the monitored unlicensed frequency resources when the available unlicensed frequency resources are monitored and a next MAC layer control signaling or a next downlink control signaling is not received.
According to the scheme, when the user equipment monitors available unauthorized frequency resources, the base station is used for the uplink scheduling parameter configuration information selected by the MAC layer control signaling or the downlink control signaling, and uplink data transmission is carried out by monitoring the unauthorized frequency resources, so that the user equipment can quickly acquire the uplink scheduling parameter configuration information selected by the base station due to the short transmission delay of the MAC layer control signaling or the downlink control signaling, and uplink data transmission is carried out by monitoring the unauthorized frequency resources, so that the utilization rate of wireless resources can be improved, and the wireless resources are saved.
Fig. 6 is a schematic structural diagram of a base station in the embodiment of the present invention. Referring to fig. 6, in a specific implementation, a base station 600 in the embodiment of the present invention may include a configuration information generating and sending unit 601 and a configuration information selecting unit 602, where:
the configuration information generating and sending unit 601 is adapted to generate and send more than two types of uplink scheduling parameter configuration information to the ue, where the uplink scheduling parameter configuration information includes information of configuration parameters used when the ue uses an unlicensed frequency resource for uplink data transmission.
A configuration information selecting unit 602, adapted to transmit uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information by sending a MAC layer control signaling or a downlink control signaling to the ue, so that when the ue monitors a usable unlicensed frequency resource, the ue uses the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unlicensed frequency resource.
In an embodiment of the present invention, the MAC layer control signaling or the downlink control signaling includes identification information corresponding to the selected uplink scheduling parameter configuration information.
In a specific implementation, the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information. In other embodiments, the uplink scheduling parameter configuration information further includes at least one of uplink transmission power control information and maximum consecutive subframe number information of uplink transmission.
In the above scheme, the base station sends the uplink scheduling parameter configuration information used when the user equipment uses the unlicensed frequency resource to perform uplink data transmission to the user equipment in advance, and then sends one uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information to the user equipment through the MAC layer control signaling or the downlink control signaling, so that the user equipment can use the uplink scheduling parameter configuration information selected by the MAC layer control signaling or the downlink control signaling to perform uplink data transmission.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. An uplink data transmission method, comprising:
receiving and storing more than two types of uplink scheduling parameter configuration information sent by a base station;
receiving an MAC layer control signaling or a downlink control signaling sent by the base station, and analyzing uplink scheduling parameter configuration information selected by the base station from the more than two uplink scheduling parameter configuration information from the MAC layer control signaling or the downlink control signaling; the MAC layer control signaling or the downlink control signaling comprises identification information corresponding to uplink scheduling parameter configuration information selected by the base station;
when available unauthorized frequency resources are monitored, adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resources; the selected uplink scheduling parameter configuration information comprises maximum continuous subframe number information of uplink transmission;
and when the number of the subframes used by the uplink data needing to be transmitted is determined to be less than the maximum continuous subframe number of the uplink transmission, releasing the unauthorized frequency resources when the uplink data is transmitted.
2. The uplink data transmission method according to claim 1, wherein the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
3. The uplink data transmission method according to claim 2, wherein the uplink scheduling parameter configuration information further includes uplink transmission power control information.
4. The uplink data transmission method according to claim 1, wherein the performing uplink data transmission using the selected uplink scheduling parameter configuration information and the unlicensed frequency resource includes: and when available unauthorized frequency resources are monitored and the next MAC layer control signaling or the next downlink control signaling is not received, continuously adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the monitored unauthorized frequency resources.
5. An uplink scheduling method, comprising:
generating more than two types of uplink scheduling parameter configuration information and sending the uplink scheduling parameter configuration information to user equipment, wherein the uplink scheduling parameter configuration information comprises information of configuration parameters used when the user equipment uses an unlicensed frequency resource to perform uplink data transmission;
when uplink scheduling parameter configuration information selected from the more than two uplink scheduling parameter configuration information is transmitted by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that the user equipment monitors available unlicensed frequency resources, adopting the selected uplink scheduling parameter configuration information and performing uplink data transmission through the unlicensed frequency resources; the MAC layer control signaling or the downlink control signaling comprises identification information corresponding to the selected uplink scheduling parameter configuration information;
the selected uplink scheduling parameter configuration information includes maximum continuous subframe number information of uplink transmission, so that the user equipment releases the unauthorized frequency resource when the uplink data is transmitted when determining that the number of subframes used by the uplink data to be transmitted is less than the maximum continuous subframe number of the uplink transmission.
6. The uplink scheduling method according to claim 5, wherein the uplink scheduling parameter configuration information includes at least one of uplink physical resource block allocation information and modulation and coding format information.
7. The uplink scheduling method according to claim 6, wherein the uplink scheduling parameter configuration information further includes uplink transmission power control information.
8. A user device, comprising:
the configuration information receiving and storing unit is suitable for receiving and storing more than two types of uplink scheduling parameter configuration information sent by the base station;
a configuration information obtaining unit, adapted to receive the MAC layer control signaling or the downlink control signaling sent by the base station, and analyze, from the MAC layer control signaling or the downlink control signaling, the uplink scheduling parameter configuration information selected by the base station from the two or more uplink scheduling parameter configuration information; the selected uplink scheduling parameter configuration information comprises maximum continuous subframe number information of uplink transmission; the MAC layer control signaling or the downlink control signaling comprises identification information corresponding to uplink scheduling parameter configuration information selected by the base station;
the uplink data transmission unit is suitable for adopting the selected uplink scheduling parameter configuration information and carrying out uplink data transmission through the unauthorized frequency resource when the available unauthorized frequency resource is monitored; and when the number of the subframes used by the uplink data needing to be transmitted is determined to be less than the maximum continuous subframe number of the uplink transmission, releasing the unauthorized frequency resource when the uplink data is transmitted.
9. The UE of claim 8, wherein the uplink scheduling parameter configuration information comprises at least one of uplink physical resource block allocation information and modulation and coding format information.
10. The UE of claim 9, wherein the uplink scheduling parameter configuration information further includes uplink transmission power control information.
11. The UE of claim 8, wherein the uplink data transmission unit is adapted to continuously use the selected uplink scheduling parameter configuration information and perform uplink data transmission through the monitored unlicensed frequency resources when available unlicensed frequency resources are monitored and no next MAC layer control signaling or next downlink control signaling is received.
12. A base station, comprising:
a configuration information generating and sending unit, adapted to generate and send more than two types of uplink scheduling parameter configuration information to a user equipment, where the uplink scheduling parameter configuration information includes information of configuration parameters used when the user equipment uses an unlicensed frequency resource for uplink data transmission;
a configuration information selecting unit, adapted to transmit uplink scheduling parameter configuration information selected from the two or more uplink scheduling parameter configuration information by sending an MAC layer control signaling or a downlink control signaling to the user equipment, so that when the user equipment monitors a usable unlicensed frequency resource, the user equipment adopts the selected uplink scheduling parameter configuration information and performs uplink data transmission through the unlicensed frequency resource; the MAC layer control signaling or the downlink control signaling comprises identification information corresponding to the selected uplink scheduling parameter configuration information;
the selected uplink scheduling parameter configuration information includes maximum continuous subframe number information of uplink transmission, so that the user equipment releases the unauthorized frequency resource when the uplink data is transmitted when determining that the number of subframes used by the uplink data to be transmitted is less than the maximum continuous subframe number of the uplink transmission.
13. The base station of claim 12, wherein the uplink scheduling parameter configuration information comprises at least one of uplink physical resource block allocation information and modulation and coding format information.
14. The base station of claim 13, wherein the uplink scheduling parameter configuration information further includes uplink transmission power control information.
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| CN109951251A (en) * | 2017-12-21 | 2019-06-28 | 珠海市魅族科技有限公司 | The method and device of demodulation or modulation without dispatching uplink data |
| EP3836703A4 (en) * | 2018-08-10 | 2022-03-30 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for sending information, and storage medium and terminal |
| CN111615210A (en) * | 2019-05-09 | 2020-09-01 | 维沃移动通信有限公司 | Two-step random access method and terminal |
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Inventor after: Fan Wei Inventor before: Deng Yun |