CN108243137B - Method for distributing sub-band frame structure resource of wireless frame service - Google Patents
Method for distributing sub-band frame structure resource of wireless frame service Download PDFInfo
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- CN108243137B CN108243137B CN201611224055.6A CN201611224055A CN108243137B CN 108243137 B CN108243137 B CN 108243137B CN 201611224055 A CN201611224055 A CN 201611224055A CN 108243137 B CN108243137 B CN 108243137B
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- subframe
- ofdm symbols
- downlink
- uplink
- ofdm
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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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
- H04W72/0446—Resources in time domain, e.g. slots or frames
Abstract
The application discloses a method for distributing resources of a sub-band frame structure of a wireless frame service, which comprises the following steps: in each radio frame, downlink resources occupy all OFDM symbols of a subframe 0, all OFDM symbols of a subframe 1 and first 2 OFDM symbols of a subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of a subframe 3 and all OFDM symbols of a subframe 4, and a guard interval GP occupies the 3 rd OFDM symbol of the subframe 2; the downlink resource carries the PCFICH, the PHICH, the downlink pilot frequency and the PDCCH, or the downlink resource carries the PCFICH, the PHICH, the downlink pilot frequency and the PDSCH; the uplink resource bears SR, PUCCH pilot frequency, PUSCH and PUSCH pilot frequency, and the scheme can provide more efficient service transmission for symmetric services requiring balance of uplink and downlink transmission rates.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a wireless frame service sub-band frame structure resource allocation method.
Background
A schematic resource allocation diagram of a service sub-band frame structure of a current power communication system is shown in fig. 1, where downlink resources occupy all OFDM (Orthogonal Frequency Division Multiplexing) symbols of a subframe 0 and the first 4 OFDM symbols of the subframe 1, and uplink resources occupy the last 4 OFDM symbols of the subframe 1, all OFDM symbols of a subframe 2, all OFDM symbols of a subframe 3, and all OFDM symbols of the subframe 4, that is, a ratio of downlink resources to uplink resources in a time domain is approximately 1: 3.
In the requirements of the existing power communication system, the distribution network service and the voice service belong to symmetric services, and the symmetric services have more balanced requirements on the uplink transmission rate and the downlink transmission rate, so that a service sub-band frame structure with balanced uplink resource and downlink resource distribution is required, otherwise, the transmission efficiency of the symmetric services is reduced. The uplink transmission capability and the downlink transmission capability of the service sub-band frame structure shown in fig. 1 are not balanced, and efficient transmission cannot be provided for a symmetric service with a requirement on the uplink and downlink transmission rates.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a resource allocation method for a sub-band frame structure of a wireless frame service, so as to solve the problem that the currently allocated sub-band frame structure of the service cannot provide high-efficiency transmission for symmetric services.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method for distributing sub-band frame structure resources of wireless frame service includes:
in each radio frame, downlink resources occupy all OFDM symbols of a subframe 0, all OFDM symbols of a subframe 1 and first 2 OFDM symbols of a subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of a subframe 3 and all OFDM symbols of a subframe 4, and a Guard interval (GP, Guard Period) occupies the 3 rd OFDM symbol of the subframe 2;
the Downlink resource carries a Physical Control Format Indicator Channel (PCFICH), a Physical Hybrid automatic repeat Indicator Channel (PHICH), a Downlink pilot frequency and a Physical Downlink Control Channel (PDCCH), or the Downlink resource carries a PCFICH, a PHICH, a Downlink pilot frequency and a Physical Downlink Shared Channel (PDSCH);
the Uplink resource carries a Scheduling Request (SR), a Physical Uplink Control Channel (PUCCH), a PUCCH pilot, a Physical Uplink Shared Channel (PUSCH), and a PUSCH pilot.
In summary, the present invention provides a method for allocating resources of a sub-band frame structure of a wireless frame service, in the method, downlink resources occupy all OFDM symbols of a sub-frame 0, all OFDM symbols of a sub-frame 1 and first 2 OFDM symbols of a sub-frame 2, and uplink resources occupy last 6 OFDM symbols of the sub-frame 2, all OFDM symbols of a sub-frame 3 and all OFDM symbols of a sub-frame 4, the method for allocating uplink and downlink resources realizes a ratio of approximately 2:2 between downlink resources and uplink resources in a time domain, and provides efficient service transmission for symmetric services with equivalent uplink and downlink rates, such as a distribution network service and a voice service.
Drawings
FIG. 1 is a schematic diagram of resource allocation of a sub-band frame structure of a wireless frame service in the prior art;
fig. 2 is a schematic diagram of resource allocation of a sub-band frame structure of a wireless frame service in the technical solution of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention designs the uplink and downlink resource ratio of a service sub-band wireless frame as 2:2, high-efficiency service transmission can be provided for symmetric services with equivalent uplink and downlink rates, such as distribution network services, voice services and the like.
The technical scheme of the invention comprises the following steps:
in each radio frame, downlink resources occupy all OFDM symbols of a subframe 0, all OFDM symbols of a subframe 1 and first 2 OFDM symbols of a subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of a subframe 3 and all OFDM symbols of a subframe 4, and a guard interval GP occupies the 3 rd OFDM symbol of the subframe 2;
the downlink resource carries a physical control format indicator channel PCFICH, a physical hybrid automatic repeat indicator channel PHICH, a downlink pilot frequency and a physical downlink control channel PDCCH, or the downlink resource carries the PCFICH, the PHICH, the downlink pilot frequency and a physical downlink shared channel PDSCH;
the uplink resource carries SR, a physical uplink control channel PUCCH, a PUCCH pilot frequency, a physical uplink shared channel PUSCH and a PUSCH pilot frequency.
Fig. 2 is a schematic diagram of service subband radio frame resource allocation according to the technical scheme of the present invention, and as shown in fig. 2, downlink resources occupy all OFDM symbols of subframe 0, all OFDM symbols of subframe 1, and first 2 OFDM symbols of subframe 2, uplink resources occupy last 6 OFDM symbols of subframe 2, all OFDM symbols of subframe 3, and all OFDM symbols of subframe 4, and a guard interval GP occupies the 3 rd OFDM symbol of subframe 2, and a ratio of resources occupied by uplink and downlink resources in a time domain is approximately 2: 2.
When the downlink resource carries the PDCCH, the PDCCH occupies the last 5 OFDM symbols of the subframe 0, all OFDM symbols of the subframe 1 and the first 2 OFDM symbols of the subframe 2;
when the downlink resource carries the PDSCH, the PDSCH occupies the last 5 OFDM symbols of subframe 0, all OFDM symbols of subframe 1, and the first 2 OFDM symbols of subframe 2.
In the technical scheme of the invention, the number of REs occupied by the PDCCH (or PDSCH) carried by the downlink resource changes, which correspondingly causes the recalculation of a Transport Block Size (TBS) table of the PDCCH (or PDSCH).
Each OFDM symbol occupied by the downlink Resource has a Resource Element (RE) as a downlink pilot, and the generation manner of the downlink pilot is the same as that of the downlink pilot in the sub-band frame structure of the wireless frame service with the ratio of 1:3, which is not described herein again.
The SR carried by the uplink resource occupies the 4 th, 5 th, 6 th, and 7 th OFDM symbols of the subframe 2.
The PUCCH carried by the uplink resource occupies the 8 th OFDM symbol of subframe 2 and the 2 nd OFDM symbol of subframe 3.
The PUCCH pilot carried by the uplink resource occupies the 9 th OFDM symbol of subframe 2 and the 1 st OFDM symbol of subframe 3.
The PUSCH carried by the uplink resource occupies the 3 rd, 4 th, 5 th, 6 th, 8 th, 9 th OFDM symbols of the subframe 3, the first 4 th OFDM symbols of the subframe 4, and the last 4 th OFDM symbols of the subframe 4.
The PUSCH pilot carried by the uplink resource occupies the 7 th OFDM symbol of subframe 3 and the 5 th OFDM symbol of subframe 4.
In the technical scheme of the invention, the ratio of 2:2 of downlink resources to uplink resources is realized in a time domain, so that the PDCCH demodulation performance is no longer the system coverage bottleneck, and high-efficiency service transmission can be provided for symmetric services. Meanwhile, 4 sub-bands can meet the speed requirement of voice service transmission of 12.2kbps or 16kbps, and the uplink and downlink MCS (Modulation and Coding Scheme) is equivalent.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A method for distributing sub-band frame structure resources of wireless frame services is characterized in that the method comprises the following steps:
in each radio frame, downlink resources occupy all Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe 0, all OFDM symbols of a subframe 1 and first 2 OFDM symbols of a subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of a subframe 3 and all OFDM symbols of a subframe 4, and a guard interval (GP) occupies the 3 rd OFDM symbol of the subframe 2; each OFDM symbol occupied by the downlink resource is provided with a resource unit RE as a downlink pilot frequency;
the downlink resource carries a physical control format indicator channel PCFICH, a physical hybrid automatic repeat indicator channel PHICH, a downlink pilot frequency and a physical downlink control channel PDCCH, or the downlink resource carries the PCFICH, the PHICH, the downlink pilot frequency and a physical downlink shared channel PDSCH;
the uplink resource bears a scheduling request SR, a physical uplink control channel PUCCH, a PUCCH pilot frequency, a physical uplink shared channel PUSCH and a PUSCH pilot frequency;
when the downlink resource bears the PDCCH, the PDCCH occupies the last 5 OFDM symbols of the subframe 0, all OFDM symbols of the subframe 1 and the first 2 OFDM symbols of the subframe 2;
when the downlink resource carries the PDSCH, the PDSCH occupies the last 5 OFDM symbols of subframe 0, all OFDM symbols of subframe 1, and the first 2 OFDM symbols of subframe 2.
2. The method of claim 1, wherein the SR carried by the uplink resource occupies the 4 th, 5 th, 6 th, and 7 th OFDM symbols of subframe 2;
the PUCCH carried by the uplink resource occupies the 8 th OFDM symbol of the subframe 2 and the 2 nd OFDM symbol of the subframe 3;
the PUCCH pilot carried by the uplink resource occupies the 9 th OFDM symbol of the subframe 2 and the 1 st OFDM symbol of the subframe 3;
the PUSCH carried by the uplink resource occupies the 3 rd, 4 th, 5 th, 6 th, 8 th and 9 th OFDM symbols of the subframe 3, the first 4 th OFDM symbols of the subframe 4 and the last 4 th OFDM symbols of the subframe 4;
and the PUSCH pilot carried by the uplink resource occupies the 7 th OFDM symbol of the subframe 3 and the 5 th OFDM symbol of the subframe 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611224055.6A CN108243137B (en) | 2016-12-27 | 2016-12-27 | Method for distributing sub-band frame structure resource of wireless frame service |
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| CN201611224055.6A CN108243137B (en) | 2016-12-27 | 2016-12-27 | Method for distributing sub-band frame structure resource of wireless frame service |
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| CN108243137A CN108243137A (en) | 2018-07-03 |
| CN108243137B true CN108243137B (en) | 2021-08-13 |
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| CN112449427B (en) * | 2019-09-05 | 2024-04-23 | 普天信息技术有限公司 | Data transmission method of multi-sub-band communication system, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101483510A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system |
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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 |
| CN101483475B (en) * | 2008-01-07 | 2012-07-11 | 电信科学技术研究院 | Method and apparatus for fully utilizing special time slot resource in time division duplex system |
| CN101483916B (en) * | 2008-01-07 | 2010-09-22 | 大唐移动通信设备有限公司 | Method and apparatus for resource allocation |
| DE102008055137A1 (en) * | 2008-12-23 | 2010-07-01 | Robert Bosch Gmbh | Electrical or electronic composite component and method for producing an electrical or electronic composite component |
| CN104184569A (en) * | 2013-05-27 | 2014-12-03 | 中兴通讯股份有限公司 | Method and device for processing flexible subframe |
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| CN101483510A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system |
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