CN107920391B - Scheduling method, system and equipment of physical uplink control channel - Google Patents
Scheduling method, system and equipment of physical uplink control channel Download PDFInfo
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- CN107920391B CN107920391B CN201610882413.6A CN201610882413A CN107920391B CN 107920391 B CN107920391 B CN 107920391B CN 201610882413 A CN201610882413 A CN 201610882413A CN 107920391 B CN107920391 B CN 107920391B
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- uplink control
- physical uplink
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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
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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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
Abstract
The invention discloses a scheduling method, a system and a scheduling device of a physical uplink control channel based on flexible bandwidth and a terminal based on flexible bandwidth, relating to the field of mobile communication. The method comprises the following steps: the network side equipment issues a scheduling message to a terminal accessed to the network in a flexible bandwidth mode, wherein the scheduling message comprises indication information that a physical uplink control channel of the terminal is positioned at two ends of an aggregation frequency band in which the terminal works, so that the terminal can send the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band comprises a main frequency band and an extension frequency band. Therefore, the scheduling of the physical uplink control channel of the terminal based on the flexible bandwidth is realized.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method, a system, a device, and a terminal for scheduling a physical uplink control channel based on a flexible bandwidth.
Background
Telecom operators gradually obtain the permission of low-band spectrum resource replanting and deploying LTE networks, such as developing LTE networking in 2G networks of 800MHz and 900 MHz. However, 2G services on low-band networks may exist for a long time, and one possible scheme is to reserve part of 2G network carrier frequencies, and the LTE system can only use 5M bandwidth; however, as long as the 2G user does not leave the network, the 2G network occupies part of the spectrum resources for a long time, the system bandwidth is less than 10M, and the LTE system can still only use 5MHz bandwidth resources, which causes spectrum resource waste and difficulty in system upgrade, and therefore the terminal is required to perform cell access in a flexible bandwidth manner.
How to schedule the physical uplink control channel of the flexible bandwidth-based terminal is nothing in the prior art.
Disclosure of Invention
The invention aims to solve the technical problems that: how to schedule a physical uplink control channel of a flexible bandwidth based terminal.
According to an aspect of the embodiments of the present invention, a method for scheduling a physical uplink control channel based on a flexible bandwidth is provided, including: the network side equipment issues a scheduling message to a terminal accessed to the network in a flexible bandwidth mode, wherein the scheduling message comprises indication information that a physical uplink control channel of the terminal is positioned at two ends of an aggregation frequency band in which the terminal works, so that the terminal can send the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band comprises a main frequency band and an extension frequency band.
According to another aspect of the embodiments of the present invention, a method for scheduling a flexible bandwidth-based physical uplink control channel is provided, including: a terminal accessing a network in a flexible bandwidth mode receives a scheduling message from network side equipment, wherein the scheduling message comprises indication information of a physical uplink control channel of the terminal at two ends of an aggregation frequency band in which the terminal works; the aggregated band comprises a primary band and an extension band; and the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information.
According to another aspect of the embodiments of the present invention, there is provided a flexible bandwidth-based scheduling apparatus for a physical uplink control channel, including: and the message sending module is used for sending a scheduling message to a terminal accessed to the network in a flexible bandwidth mode, wherein the scheduling message comprises indication information that a physical uplink control channel of the terminal is positioned at two ends of an aggregation frequency band in which the terminal works, so that the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band comprises a main frequency band and an extension frequency band.
According to still another aspect of the embodiments of the present invention, there is provided a flexible bandwidth based terminal, including: a message receiving module, configured to receive a scheduling message from a network side device, where the scheduling message includes indication information that a physical uplink control channel of a terminal is located at two ends of an aggregation frequency band in which the terminal operates, and the aggregation frequency band includes a main frequency band and an extension frequency band; and the information sending module is used for sending the physical uplink control information on the physical uplink control channel indicated by the indication information.
According to still another aspect of the embodiments of the present invention, a flexible bandwidth-based scheduling system for a physical uplink control channel is provided, which includes the above-mentioned device and the above-mentioned terminal.
The network side equipment sends the scheduling information to the terminal accessed to the network in a flexible bandwidth mode, the scheduling information comprises the indication information of the physical uplink control channel of the terminal at the two ends of the aggregation frequency band in which the terminal works, and the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information, so that the scheduling of the physical uplink control channel of the terminal based on the flexible bandwidth is realized.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a scheduling method of a flexible bandwidth-based physical uplink control channel according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a scheduling method of a flexible bandwidth-based physical uplink control channel according to another embodiment of the present invention.
Fig. 3 shows an application example of a flexible bandwidth-based scheduling method for a physical uplink control channel.
Fig. 4 is a schematic structural diagram illustrating an embodiment of a flexible bandwidth-based scheduling apparatus for a physical uplink control channel according to the present invention.
Fig. 5 is a schematic structural diagram of an embodiment of a flexible bandwidth based terminal according to the present invention.
Fig. 6 is a schematic structural diagram illustrating an embodiment of a flexible bandwidth-based scheduling system for a physical uplink control channel according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to improve the utilization rate of wireless network resources, a terminal needs to obtain network scheduling resources beyond a standard bandwidth, and when a terminal access system finishes cell search and synchronization, the terminal can be transferred to an aggregation frequency band consisting of an extension frequency band and a main frequency band to work under the indication of a flexible bandwidth system message. The specific operating bandwidth may be a standard bandwidth or a non-standard bandwidth.
The patent provides a scheduling method and equipment of an uplink control channel suitable for an LTE flexible bandwidth technology, redesigns the uplink control channel of a user under a non-standard bandwidth, enables a terminal supporting a flexible bandwidth function to upload uplink control information in a full bandwidth, does not interfere with the uplink channel of a traditional access mode, is compatible with the terminal of the traditional access mode, minimizes the change impact on the existing system, realizes channel resource sharing, and finally achieves the effect of flexible configuration of the non-standard bandwidth.
The following describes a scheduling method of a flexible bandwidth based physical uplink control channel according to an embodiment of the present invention with reference to fig. 1.
Fig. 1 is a flowchart illustrating a scheduling method of a flexible bandwidth-based physical uplink control channel according to an embodiment of the present invention. As shown in fig. 1, the method for scheduling a flexible bandwidth-based physical uplink control channel in this embodiment includes:
step S102, the network side equipment issues a scheduling message to a terminal accessing the network in a flexible bandwidth mode. The scheduling message includes indication information that a physical uplink control channel of the terminal is located at two ends of an aggregation frequency band in which the terminal operates, and the aggregation frequency band includes a main frequency band and an extension frequency band.
The terminal with flexible bandwidth allocation function is connected to the network and then allocated to a new section of frequency band to work, at this time, the physical uplink control channel of the terminal also adopts the design distributed at both ends of the working bandwidth, according to the length of the working bandwidth of the terminal, the physical uplink control channel is distributed at both ends of the working bandwidth and is uniformly scheduled by the network end,
step S104, the terminal accessing the network in the flexible bandwidth mode receives the scheduling message from the network side equipment.
Step S106, the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information.
The foregoing embodiments provide a method for scheduling a flexible bandwidth-based physical uplink control channel, so as to implement scheduling of a flexible bandwidth-based physical uplink control channel of a terminal.
A flexible bandwidth based scheduling method for a physical uplink control channel according to another embodiment of the present invention is described with reference to fig. 2. In the scheduling method of this embodiment, the physical uplink control channels of different terminals can be allocated and scheduled, so as to solve the problem that the physical uplink control channels between different terminals may have a conflict.
Fig. 2 is a flowchart illustrating a scheduling method of a flexible bandwidth-based physical uplink control channel according to another embodiment of the present invention. As shown in fig. 2, based on the embodiment shown in fig. 1, the method for scheduling a flexible bandwidth-based physical uplink control channel in this embodiment includes:
in step S202, the specific execution content may refer to step S102.
Step S203, the network side equipment re-issues the scheduling message to the terminal under the condition that at least one end of the two ends of the aggregation frequency band where the terminal works is occupied by the physical uplink control channels of other terminals.
And the scheduling message which is sent again comprises the indication information of the physical uplink control channel of the terminal, which is located at the physical resource block facing the center side of the aggregation frequency band and adjacent to the occupied physical uplink control channel.
In step S204, the specific execution content may refer to step S104.
In step S206, the specific execution content may refer to step S106.
In the embodiment, the network side performs allocation scheduling on the physical uplink control channels of different terminals, so that the physical uplink control channel allocation conflict is avoided, and multi-user PUCCH coexistence under a flexible bandwidth scene is realized.
In the above embodiment, a specific application scenario of step S203 may be as shown in fig. 3. Fig. 3 shows an application example of a flexible bandwidth-based scheduling method for a physical uplink control channel. Assuming that there is a segment of bandwidth of 7MHz in the network, it can be similarly considered as a superposition of two segments of bandwidth, where the right part 5MHz is an LTE network that has been deployed and used by a telecom operator, its operating bandwidth is a main bandwidth, and the left part 2MHz is an extended bandwidth. The terminal with the flexible bandwidth configuration function can use the left 5MHz frequency band resource as its working bandwidth, which includes the extended bandwidth of 2 MHz. From the user side, the bandwidth used by the conventional terminal after accessing the network is the main bandwidth of 5MHz on the right as shown in the first row. The physical uplink control channel of the legacy terminal is denoted PUCCH # 1. Colors of different depths represent PUCCH channels of different users, and the distribution of the colors meets the design requirement of LTE on physical uplink control channels, namely the colors are distributed at two ends of a working bandwidth.
The aggregated band may have a standard bandwidth or a non-standard bandwidth. Terminals with flexible bandwidth configuration function are divided into two categories, one is a terminal only supporting standard bandwidth, and the network indicates the working frequency band position and bandwidth, as shown in the second row in the figure. Such terminals occupy the left 5MHz portion of the entire 7MHz spectrum. According to the principle of reducing the modification to the LTE system design as much as possible, the physical uplink control channels are also distributed at both ends of the operating frequency band, and are labeled as PUCCH # 2. Another class of terminals supporting flexible bandwidth configuration supports configuration of non-standard bandwidth, i.e. any length of bandwidth from 1.4MHz to 20 MHz. The physical uplink control channels are also distributed at two ends of the working bandwidth, as shown in the third row in the figure, distributed at two ends of the whole bandwidth of 7MHz, and labeled as PUCCH # 3.
For the collision problem of the physical uplink control channel between the user terminals, as shown in the figure, the left end of the PUCCH # 3 collides with PUCCH # 2, and the right end collides with PUCCH # 1. At this time, network-side scheduling is needed to control collision avoidance. The specific scheduling method comprises the following steps:
1) the PUCCH distribution requirement of the traditional users is not influenced as much as possible, namely the right side of the whole frequency band is preferentially reserved for the traditional users, such as the rightmost PUCCH # 1 in the fourth row in the figure.
2) If the PUCCH channel collision occurs, the resources are reallocated according to the modes of distributing at both ends of the bandwidth as much as possible and selecting adjacent resource allocation, for example, the PUCCH # 3 at the fourth row in the figure is allocated at both ends of the bandwidth as much as possible, and at the same time, because the PRB resources are occupied by the PUCCH # 1, the PUCCH # 3 is allocated to the center of the working frequency band by shifting the position of one PRB. Finally, the physical uplink control channels of different users of the whole 7MHz bandwidth are shown in the fourth row of the figure.
Optionally, the method may further include: step S207, the network side device does not allocate the physical resource block in which the physical uplink control channel of the terminal is located to another terminal for data transmission, so as to avoid interference of uplink channels of different users.
Optionally, the flexible bandwidth configuration terminal supporting the non-standard bandwidth may have a working bandwidth that is a system full bandwidth including a main bandwidth and an extended bandwidth, so as to improve the utilization rate of system resources.
One embodiment of the flexible bandwidth based cell access terminal of the present invention is described below in conjunction with fig. 4.
Fig. 4 is a schematic structural diagram illustrating an embodiment of a flexible bandwidth-based scheduling apparatus for a physical uplink control channel according to the present invention. As shown in fig. 4, the flexible bandwidth based scheduling apparatus 40 for a physical uplink control channel in this embodiment includes:
a message sending module 402, configured to send a scheduling message to a terminal accessing a network in a flexible bandwidth manner, where the scheduling message includes indication information that a physical uplink control channel of the terminal is located at two ends of an aggregation frequency band in which the terminal operates, so that the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band includes a main frequency band and an extension frequency band.
Optionally, under the condition that at least one of the two ends of the aggregation band where the terminal operates is occupied by the physical uplink control channel of another terminal, the message sending module 402 re-issues the scheduling message to the terminal, where the re-issued scheduling message includes the indication information of the physical resource block, located on the aggregation band center side and adjacent to the occupied physical uplink control channel, of the physical uplink control channel of the terminal.
Optionally, the apparatus 40 may further include a resource allocation module 404, configured to no longer allocate the physical resource block where the physical uplink control channel of the terminal is located to other terminals for data transmission.
Optionally, the aggregated band has a standard bandwidth or a non-standard bandwidth; alternatively, the aggregated band has the full bandwidth of the system.
One embodiment of the flexible bandwidth based cell access terminal of the present invention is described below in conjunction with fig. 5.
Fig. 5 is a schematic structural diagram of an embodiment of a flexible bandwidth based terminal according to the present invention. As shown in fig. 5, the flexible bandwidth based terminal 50 in this embodiment includes:
a message receiving module 502, configured to receive a scheduling message from a network side device, where the scheduling message includes indication information that a physical uplink control channel of a terminal is located at two ends of an aggregation frequency band in which the terminal operates, and the aggregation frequency band includes a main frequency band and an extension frequency band.
An information sending module 504, configured to send the physical uplink control information on the physical uplink control channel indicated by the indication information.
One embodiment of the flexible bandwidth based cell access terminal of the present invention is described below in conjunction with fig. 6.
Fig. 6 is a schematic structural diagram illustrating an embodiment of a flexible bandwidth-based scheduling system for a physical uplink control channel according to the present invention. As shown in fig. 6, the flexible bandwidth-based scheduling system 60 for a physical uplink control channel in this embodiment includes: a flexible bandwidth based physical uplink control channel scheduling device 40 and a flexible bandwidth based terminal 50.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A scheduling method of a physical uplink control channel based on flexible bandwidth comprises the following steps:
the network side equipment issues a scheduling message to a terminal accessed to the network in a flexible bandwidth mode, wherein the scheduling message comprises indication information that a physical uplink control channel of the terminal is positioned at two ends of an aggregation frequency band in which the terminal works, so that the terminal can send the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band comprises a main frequency band and an extension frequency band;
under the condition that at least one end of two ends of an aggregation frequency band in which the terminal works is occupied by physical uplink control channels of other terminals, the network side equipment re-issues a scheduling message to the terminal, wherein the re-issued scheduling message comprises indication information of a physical uplink control channel of the terminal, which is located on a physical resource block facing to the aggregation frequency band center side and adjacent to the occupied physical uplink control channel.
2. The method of claim 1, wherein the method further comprises:
the network side device does not allocate the physical resource block where the physical uplink control channel of the terminal is located to other terminals for data transmission.
3. The method of claim 1, wherein the aggregated band has a standard bandwidth or a non-standard bandwidth; alternatively, the aggregated band has the full bandwidth of the system.
4. A flexible bandwidth based scheduling device for a Physical Uplink Control Channel (PUCCH), comprising:
the message sending module is used for sending a scheduling message to a terminal accessed to a network in a flexible bandwidth mode, wherein the scheduling message comprises indication information that a physical uplink control channel of the terminal is positioned at two ends of an aggregation frequency band in which the terminal works, so that the terminal sends the physical uplink control information on the physical uplink control channel indicated by the indication information, and the aggregation frequency band comprises a main frequency band and an extension frequency band; under the condition that at least one end of two ends of an aggregation frequency band in which the terminal works is occupied by physical uplink control channels of other terminals, the message sending module re-issues the scheduling message to the terminal, wherein the re-issued scheduling message comprises indication information of a physical resource block, facing to the aggregation frequency band center side, of the physical uplink control channel of the terminal, and the indication information is adjacent to the occupied physical uplink control channel.
5. The apparatus of claim 4, wherein the apparatus further comprises: and the resource allocation module is used for not allocating the physical resource block where the physical uplink control channel of the terminal is located to other terminals for data transmission.
6. The apparatus of claim 4, wherein the aggregated band has a standard bandwidth or a non-standard bandwidth; alternatively, the aggregated band has the full bandwidth of the system.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010018226A3 (en) * | 2008-08-15 | 2010-04-22 | Nokia Siemens Networks Oy | Backward compatible physical uplink control channel resource mapping |
| CN102045865A (en) * | 2009-10-23 | 2011-05-04 | 华为技术有限公司 | Communication method between base station and user terminal and corresponding devices |
| CN102958133A (en) * | 2011-08-25 | 2013-03-06 | 华为技术有限公司 | Communication system access method, downlink information transmitting method, terminal and base station |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010018226A3 (en) * | 2008-08-15 | 2010-04-22 | Nokia Siemens Networks Oy | Backward compatible physical uplink control channel resource mapping |
| CN102045865A (en) * | 2009-10-23 | 2011-05-04 | 华为技术有限公司 | Communication method between base station and user terminal and corresponding devices |
| CN102958133A (en) * | 2011-08-25 | 2013-03-06 | 华为技术有限公司 | Communication system access method, downlink information transmitting method, terminal and base station |
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