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Method and device for narrowband wireless communication

A wireless communication, narrowband technology, applied in signaling allocation, transmission path sub-channel allocation, digital transmission system, etc., can solve the problems of occupying too many subframes, unable to guarantee the orthogonality of uplink signals, increasing system delay, etc.

Active Publication Date: 2019-08-09
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a problem with this method is that this will cause an uplink non-data channel (or signal) transmission to occupy too many subframes in the time domain, thereby increasing the system delay, and because of the introduction of a large delay, an uplink non-data channel The channel experienced by the data channel (or signal) changes, so the orthogonality between uplink signals cannot be guaranteed

Method used

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  • Method and device for narrowband wireless communication
  • Method and device for narrowband wireless communication
  • Method and device for narrowband wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0176]Embodiment 1 shows a flow chart of transmission of a feature sequence according to the present invention;

[0177] , as attached figure 1 shown. attached figure 1 In , the base station N1 is the maintenance base station of the serving cell of the UE U2. The steps identified in boxes F1 to F5 are optional steps.

[0178] For the base station N1, the first signaling is sent in step S11, and the first signaling indicates the first resource set.

[0179] Wherein, the first resource set occupies M time windows in the time domain. The bandwidth occupied by the first resource set in the frequency domain within a time window is less than or equal to 180 kHz. The signature sequence occupies part of the time-frequency resources in the first resource set. Said M is a positive integer. The first resource set is used to transmit uplink signals other than uplink data. The first resource set includes at least one of {first resource space, second resource space, third resource s...

Embodiment 2

[0193] Embodiment 2 illustrates a flowchart of a fourth characteristic sequence transmission according to the present invention; as attached figure 2 shown. attached figure 2 In , the base station N3 is the maintenance base station of the serving cell of the UE U4.

[0194] For the base station N3, a downlink signal is sent in step S31.

[0195] Wherein, the downlink signal includes D transmission blocks, and the fourth signature sequence indicates whether the D transmission blocks are correctly decoded. The fourth characteristic sequence occupies L1 resource units in the F4 subcarriers. The demodulation reference signal occupies L2 resource units in the F4 subcarriers. L1 and L2 are positive integers.

[0196] For UE U4, a downlink signal is received in step S41.

[0197] For UE U4, in step S42, the demodulation reference signal is sent in the first set of resources.

[0198] Wherein, the fourth characteristic sequence and the demodulation reference signal are sent b...

Embodiment 3

[0203] Embodiment 3 illustrates a flow chart of yet another fourth characteristic sequence transmission according to the present invention; as attached image 3 shown. attached image 3 In , the base station N5 is the maintenance base station of the serving cell of the UE U6.

[0204] For UE U6, it is determined to apply for uplink resources in step S61.

[0205] For UE U6, in step S62, the demodulation reference signal is sent in the first set of resources.

[0206] For the base station N5, the demodulation reference signal is received in the first set of resources in step S51.

[0207] For UE U6, at least a fourth signature sequence in {third signature sequence, fourth signature sequence} is sent in step S63.

[0208] For the base station N5, at least a fourth signature sequence in {third signature sequence, fourth signature sequence} is received in step S52.

[0209] For base station N5, a scheduling request is searched in step S53.

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Abstract

The present invention discloses a narrowband wireless communication method and device. A UE send at least one of a first feature sequence, a second feature sequence, a third feature sequence and a fourth feature sequence. The first feature sequence, the second feature sequence, the third feature sequence and the fourth feature sequence are respectively sent on corresponding resource spaces. The resource spaces belong to a first resource set, and the first resource set performs indication through a first signaling. When transmission time windows of two given feature sequences have collision, the given feature sequences are sent according to a certain predefined priority. Through design of a new uplink non-data channel resource distribution and sending mode, the narrowband wireless communication method and device realize that small resource bears uplink non-data channel transmission. Especially, when the UE uplink transmission only supports single subcarrier, the narrowband wireless communication method and device can effectively send the uplink non-data channel so as to reduce transmission delay and ensure the reliability of the uplink transmission of the narrowband communication system.

Description

technical field [0001] The present invention relates to a transmission scheme in a wireless communication system, in particular to a method and a device for resource mapping and transmission of an uplink non-data channel based on cellular network narrowband communication. Background technique [0002] At the 3GPP (3rd Generation Partner Project, third-generation partnership project) RAN (RadioAccess Network, wireless access network) #69 plenary meeting, the subject of NB-IOT (NarrowBand Internet of Things, narrowband Internet of Things) was approved by 3GPP It is a new Work Item for Release 13, and the discussion started at the RAN1#89bis meeting. This technology will provide improved indoor coverage, and through an optimized network architecture, it will support a large number of UE devices with low traffic, low latency sensitivity, ultra-low device cost, and low device power consumption. Currently, the technology is divided into three scenarios for discussion, namely: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/0053H04L5/0055
Inventor 蒋琦
Owner SHANGHAI LANGBO COMM TECH CO LTD
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