Base stations and method for synchronously scheduling resources among same

A technology of resource scheduling and resource scheduling instructions, applied in the field of wireless communication, which can solve problems such as increased interference, joint data transmission failure, waste of resources, etc.

Inactive Publication Date: 2015-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the actual delay of the X2 interface may be greater or less than the delay estimated by the serving eNB, the non-serving eNB sends downlink data at different TTI times, resulting in the failure of joint data transmission, which wastes resources and increases interference

Method used

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  • Base stations and method for synchronously scheduling resources among same
  • Base stations and method for synchronously scheduling resources among same
  • Base stations and method for synchronously scheduling resources among same

Examples

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Embodiment 1

[0091] Embodiment 1: A method for synchronously performing downlink resource scheduling between eNBs

[0092] Such as Figure 4 As shown, each square in the figure represents a TTI width (1ms) in the timing. Each radio frame (10ms) includes 10 subframes (1ms), which are respectively labeled as 0-9. The system frame numbers and frame boundaries of the serving eNB and the non-serving eNB have been aligned synchronously. Assume that the serving eNB has been limited to only send downlink scheduling signaling on three predetermined subframes 1, 4, and 7.

[0093] The serving eNB is ready for downlink resource scheduling when the system frame number is N and the subframe offset in the frame is 3. According to the delay parameter and time protection parameter calculation, it should postpone 6 TTIs, that is, send the downlink in the 9th subframe scheduling.

[0094] However, since subframe 9 does not belong to the three scheduled subframes 1, 4, and 7, the delay is increased until...

Embodiment 2

[0097] Embodiment 2: A method for synchronously performing uplink resource scheduling between eNBs

[0098] Such as Figure 5 shown. Each square in the figure represents a TTI width (1ms) in the timing. Each radio frame (10ms) includes 10 subframes (1ms), which are respectively labeled as 0-9. The system frame numbers and frame boundaries of the serving eNB and the non-serving eNB have been aligned synchronously. The difference from downlink scheduling is that because uplink scheduling is synchronous, the scheduling of a specific uplink HARQ process is performed in a specific TTI, so there is no need to specify several specific processes like downlink scheduling. TTI.

[0099] The serving eNB is ready to perform uplink resource scheduling for the uplink HARQ process when the system frame number is N and the intra-frame subframe offset is 3. According to the delay parameter and time protection parameter calculation, it should be delayed by 6 TTIs, that is, in the ninth subf...

Embodiment 3

[0102] Embodiment 3: A method for synchronously performing semi-persistent resource scheduling (SPS, Semi-Persistent Scheduling) between eNBs

[0103] Such as Figure 6 shown. Each square in the figure represents a TTI width (1ms) in the timing. Each radio frame (10ms) includes 10 subframes (1ms), which are respectively labeled as 0-9. The system frame numbers and frame boundaries of the serving eNB and the non-serving eNB have been aligned synchronously. For SPS scheduling, since the serving eNB no longer transmits resource scheduling instructions to non-serving eNBs within a certain period of time, all eNBs automatically send data according to the SPS cycle, so the synchronization alignment of the first scheduling is particularly important, so in the case of SPS, the scheduling The instruction is delayed for a period of time to ensure the synchronization between eNBs. Assume that the serving eNB has been limited to only send downlink scheduling signaling on three predete...

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Abstract

The invention discloses base stations and a method for synchronously scheduling resources among the same. The method comprises the following steps of: calculating the subframe offset Y' and a system frame number N' in the total number range of subframes capable of being positioned in a wireless frame according to a system frame number N of a service base station or a non-service station and the delay summation Tdelay and the protective time T protection summation of X and X2 interfaces at finishing moment of a construction resource scheduling instruction after the service base station finishing constructing an uplink resource scheduling instruction; adjusting the subframe offset Y' and the system frame number N' according to a preset subframe for resource scheduling to obtain a system frame number N'' and a subframe offset Y''; and transmitting a resource scheduling message carrying the system frame number N'' and the subframe offset Y'' to the non-service base station for participating in combined multipoint processing by using the service base station through the X2 interface. The invention ensures that all the base stations participating in the synergism to synchronously transmit and receive data.

Description

technical field [0001] The present invention relates to a resource scheduling technology of a base station in the wireless communication field, in particular to a method for synchronously performing resource scheduling between base stations in a joint multipoint processing (CoMP, Coordinated Multiple Point) scenario and a corresponding base station. Background technique [0002] In the Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) of the third-generation mobile communication Long Term Evolution (LTE, Long Term Evolution) system, the data of the uplink / downlink is shared by uplink / downlink channel transmission. A base station (eNB, evolved NodeB) allocates resources to each user equipment (UE, User Equipment). The access technology adopted by E-UTRAN is Orthogonal Frequency Division Multiple Access (OFDM, Orthogonal Frequency Division Multiplexing) technology. The characteristics of the process, its wireless...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04W92/20
Inventor 王冠宙张银成陈思
Owner ZTE CORP
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