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Method and device for asymmetric frequency band configuration of nb-iot

An asymmetric, frequency band technology, applied in the field of asymmetric frequency band configuration, can solve problems such as insufficient spectrum utilization efficiency

Active Publication Date: 2021-05-07
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering the business model of NB-IoT, there is usually asymmetry between DL traffic and UL traffic, so a symmetrical DL / UL band configuration is not good enough for spectrum utilization efficiency

Method used

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  • Method and device for asymmetric frequency band configuration of nb-iot
  • Method and device for asymmetric frequency band configuration of nb-iot
  • Method and device for asymmetric frequency band configuration of nb-iot

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Embodiment Construction

[0019] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0020] Currently, DL / UL spectrum resources are usually symmetrical. In Global Mobile Communications (GSM) networks, paired DL / UL frequency bands are used. DL and UL frequency bands are paired and indicated by the parameter Absolute Radio Channel Number (ARFCN). Once the frequency index is determined, the DL and UL frequency bands are determined. In an LTE Frequency Division Duplex (FDD) network, a similar scheme is adopted for symmetric D...

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Abstract

The present invention provides a method and device for asymmetric frequency band configuration of NB-IoT. The method includes: allocating an available DL frequency band set and an available UL frequency band set to all UEs served by the base station, wherein the number of frequency bands included in the available DL frequency band set is not equal to the number of frequency bands included in the available UL frequency band set; System information broadcasts information about the allocated set of available DL frequency bands and available set of UL frequency bands to all UEs it serves; random access is detected on the UL frequency band of one of all UEs, where the UL frequency band is selected from the set of available UL frequency bands; and determining a DL frequency band for the UE from the set of available DL frequency bands.

Description

technical field [0001] The present invention generally relates to the field of wireless communication, and more specifically, relates to a method and device for asymmetric frequency band allocation of NB-IoT. Background technique [0002] Narrow Band Internet of Things (NB-IoT) is a technology that supports low-rate machine-to-machine (M2M) services, which are very low-cost and easier to implement in current cellular mobility (such as global mobile Communications (GSM) and / or Long Term Evolution (LTE)) networks. 3GPP RAN#69 ratified NB-IoT and updated in RAN#70 to specify radio access to cellular IoT, largely based on Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) A non-backwards-compatible variant that improves indoor coverage, supports a large number of low-throughput devices, is less latency sensitive, has very low device cost, lower device power consumption and optimized network architecture (see Ref. [1]). [0003] NB-IoT s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04W72/0453H04W72/23
Inventor 刘海静王河
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD