CN108243136B - Resource allocation method for synchronous sub-band frame structure of wireless frame - Google Patents
Resource allocation method for synchronous sub-band frame structure of wireless frame Download PDFInfo
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- CN108243136B CN108243136B CN201611223938.5A CN201611223938A CN108243136B CN 108243136 B CN108243136 B CN 108243136B CN 201611223938 A CN201611223938 A CN 201611223938A CN 108243136 B CN108243136 B CN 108243136B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H04L27/2611—
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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
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Abstract
The application discloses a method for distributing resources of a wireless frame synchronization sub-band frame structure, 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 the subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of the subframe 3 and all OFDM symbols of the subframe 4, and a guard interval GP occupies the 3 rd OFDM symbol of the subframe 2.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a wireless frame synchronization sub-band frame structure resource allocation method.
Background
A schematic resource allocation diagram of a synchronous subband 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 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. If the resource allocation of the synchronous subband frame structure shown in fig. 1 matches a service subband frame structure with balanced uplink resource and downlink resource allocation, the transmit-receive timing design of the base station and the terminal device will be complicated, and signal interference between subbands caused by different ratios of uplink and downlink resources will be easily caused.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method for allocating resources of a synchronous subband frame structure, so as to solve the problems of complicated transmit/receive timing sequence design and large signal interference between subbands caused when a synchronous subband frame structure of a current ratio matches a service subband frame structure with balanced uplink and downlink resource allocation.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method for allocating resources of a radio frame synchronization sub-band frame structure comprises the following steps:
in each radio frame, 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 the 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, Guard Period) GP occupies the 3 rd OFDM symbol of subframe 2.
In summary, the present invention provides a resource allocation method for a wireless frame synchronization subband frame structure, in which 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, and 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 the method for allocating uplink and downlink resources realizes the ratio of downlink resources to uplink resources 2:2, can match a service subband frame structure with the same ratio of 2:2, and provides efficient service transmission for symmetric services with equivalent uplink and downlink rates, such as distribution network services, voice services, etc., and the synchronization subband frame structure in the present invention can simplify the transmit-receive timing design of a base station and a terminal device, and simultaneously avoid signal interference between subbands caused by different ratios of uplink and downlink resources.
Drawings
FIG. 1 is a diagram illustrating resource allocation of a radio frame synchronization sub-band frame structure in the prior art;
FIG. 2 is a schematic diagram of resource allocation of a wireless frame synchronization sub-band frame structure according to the present invention;
FIG. 3 is a diagram illustrating resource allocation of a radio frame synchronization sub-band frame structure according to an embodiment 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 synchronous sub-band wireless frame as 2:2, when the service sub-band frame structure with the same 2:2 ratio of the uplink and downlink resources is matched, the receiving and transmitting time sequence design of the base station and the terminal equipment can be simplified, and meanwhile, the signal interference between sub-bands caused by different ratios of the uplink and downlink resources is avoided.
The technical scheme of the invention comprises the following steps:
in each radio frame, downlink resources occupy all OFDM symbols of the subframe 0, all OFDM symbols of the subframe 1 and first 2 OFDM symbols of the subframe 2, uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of the subframe 3 and all OFDM symbols of the subframe 4, and a guard interval GP occupies the 3 rd OFDM symbol of the subframe 2.
Fig. 2 is a schematic diagram of allocation of a radio frame resource of a synchronous subband according to the technical solution of the present invention, and as shown in fig. 2, a shadow area of a left lower oblique dashed line is a downlink resource, a shadow area of a right upper oblique dashed line is an uplink resource, a blank area is GP, and a ratio of the downlink resource to the uplink resource is approximately 2: 2.
Specifically, the downlink resource carries a Physical Broadcast Channel (PBCH) and a neighbor cell measurement resource, and the uplink resource carries a cell Physical Random Access Channel (PRACH) resource;
or, the downlink resource carries a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a neighboring cell measurement resource, and the uplink resource carries a cell PRACH resource.
When the downlink resource carries the PBCH and the neighbor measurement resource, the ratio of the PBCH and the neighbor measurement resource may be designed as needed, and preferably, the PBCH occupies all OFDM symbols of the subframe 0 and the first 4 OFDM symbols of the subframe 1, and the neighbor measurement resource occupies the last 5 OFDM symbols of the subframe 1 and the first 2 OFDM symbols of the subframe 2.
When the downlink resource carries the PSS, the SSS and the neighbor measurement resource, the ratio of the PSS, the SSS and the neighbor measurement resource can be designed as required, preferably, the PSS and the SSS occupy all OFDM symbols of subframe 0 and the first 4 OFDM symbols of subframe 1; the neighbor measurement resource occupies the last 5 OFDM symbols of subframe 1 and the first 2 OFDM symbols of subframe 2.
Further, when the uplink resource carries the PRACH resource of the cell, the number of the carried cells is determined according to the actual need. In the prior art, 8 cells are divided into 2 radio frame synchronization subband uplink resources, that is, each radio frame synchronization subband uplink resource bears 4 cell PRACH resources, and by applying the technical scheme of the present invention, it is preferably possible to realize that 6 cells are divided into 2 radio frame synchronization subband uplink resources, that is, each radio frame synchronization subband uplink resource bears 3 cell PRACH resources, wherein the cell PRACH resource occupies the last 6 OFDM symbols of the subframe 2 and the first 2 OFDM symbols of the subframe 3, the PRACH resource of the neighboring cell 1 occupies the last 7 OFDM symbols of the subframe 3 and the 1 st OFDM symbol of the subframe 4, and the PRACH resource of the neighboring cell 2 occupies the last 8 OFDM symbols of the subframe 4.
Fig. 3 is a preferred embodiment of the allocation of sub-band resources in the radio frame synchronization of the present invention, and as shown in fig. 3, downlink resources occupy all OFDM symbols of a sub-frame 0, all OFDM symbols of a sub-frame 1, and the first 2 OFDM symbols of a sub-frame 2, wherein all OFDM symbols of the sub-frame 0 and the first 4 OFDM symbols of the sub-frame 1 carry PBCH resources or PSS and SSS resources, and the last 5 OFDM symbols of the sub-frame 1 and the first 2 OFDM symbols of the sub-frame 2 carry neighbor measurement resources; the uplink resources occupy the last 6 OFDM symbols of the subframe 2, all OFDM symbols of the subframe 3 and all OFDM symbols of the subframe 4, wherein the last 6 OFDM symbols of the subframe 2 and the first 2 OFDM symbols of the subframe 3 carry PRACH resources of the local region, the last 7 OFDM symbols of the subframe 3 and the 1 st OFDM symbol of the subframe 4 carry PRACH resources of the neighboring region 1, and the last 8 OFDM symbols of the subframe 4 carry PRACH resources of the neighboring region 2.
In the embodiment shown in fig. 3, PRACH resources occupied by one cell is 570(512+58) Ts, and the number of resources occupied by 3 cells is 1710Ts, that is, the total number of uplink resources is 1710 Ts.
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 (3)
1. A method for allocating resources of a radio frame synchronization sub-band frame structure is characterized by comprising 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 broadcast channel PBCH and neighbor cell measurement resources, and the uplink resource carries cell physical random access channel PRACH resources;
or, the downlink resource carries a primary synchronization signal PSS, a secondary synchronization signal SSS and a neighbor cell measurement resource, and the uplink resource carries a cell physical random access channel PRACH resource.
2. The method of claim 1, wherein the PBCH occupies all OFDM symbols of subframe 0 and the first 4 OFDM symbols of subframe 1, and wherein the neighbor measurement resource occupies the last 5 OFDM symbols of subframe 1 and the first 2 OFDM symbols of subframe 2;
or the primary synchronization signal PSS and the secondary synchronization signal SSS occupy all OFDM symbols of subframe 0 and the first 4 OFDM symbols of subframe 1; the neighbor measurement resource occupies the last 5 OFDM symbols of subframe 1 and the first 2 OFDM symbols of subframe 2.
3. The method of claim 1, wherein the uplink resource carries 3 cell PRACH resources, wherein the cell PRACH resource occupies the last 6 OFDM symbols of subframe 2 and the first 2 OFDM symbols of subframe 3, the neighbor cell 1PRACH resource occupies the last 7 OFDM symbols of subframe 3 and the 1 st OFDM symbol of subframe 4, and the neighbor cell 2PRACH resource occupies the last 8 OFDM symbols of subframe 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611223938.5A CN108243136B (en) | 2016-12-27 | 2016-12-27 | Resource allocation method for synchronous sub-band frame structure of wireless frame |
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| CN201611223938.5A CN108243136B (en) | 2016-12-27 | 2016-12-27 | Resource allocation method for synchronous sub-band frame structure of wireless frame |
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| CN108243136A CN108243136A (en) | 2018-07-03 |
| CN108243136B true CN108243136B (en) | 2021-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN112532556A (en) * | 2019-09-17 | 2021-03-19 | 普天信息技术有限公司 | Method and device for sending synchronization signal |
Citations (5)
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|---|---|---|---|---|
| CN101431362A (en) * | 2007-11-08 | 2009-05-13 | 大唐移动通信设备有限公司 | Subframe distribution method and apparatus for TDD system |
| CN101483916A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Method and apparatus for resource allocation |
| CN101483475A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Method and apparatus for fully utilizing special time slot resource in time division duplex system |
| WO2012028025A1 (en) * | 2010-09-02 | 2012-03-08 | 中兴通讯股份有限公司 | Dynamic sub-frame configuration method and apparatus in time division duplex system |
| 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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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431362A (en) * | 2007-11-08 | 2009-05-13 | 大唐移动通信设备有限公司 | Subframe distribution method and apparatus for TDD system |
| CN101483916A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Method and apparatus for resource allocation |
| CN101483475A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Method and apparatus for fully utilizing special time slot resource in time division duplex system |
| WO2012028025A1 (en) * | 2010-09-02 | 2012-03-08 | 中兴通讯股份有限公司 | Dynamic sub-frame configuration method and apparatus in time division duplex system |
| 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 |
Non-Patent Citations (1)
| Title |
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| Frame structure design for 3.75kHz;MediaTek Inc.;《3GPP》;20160120;全文 * |
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