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Modulation and coding scheme (MCS) configuration method and apparatus
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A configuration method and strategy technology, applied in the direction of adjusting channel coding, adjusting transmission rate, digital transmission system, etc.
Inactive Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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However, since the scheduling instructions sent by the network equipment are defaulted, the Modulation and Coding Scheme (MCS) information originally sent to the terminal through the scheduling instruction needs to be configured to the terminal in other ways, and there is no specific regulation yet. How to configure the MCS information to the terminal in this case
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Embodiment 1
[0128] A downlink control signaling consists of the MCS information of a terminal, such as figure 2 shown.
[0129] Step 1. The network device determines the MCS information of terminal A.
[0130] Wherein, terminal A is a terminal configured in Grant-Free mode.
[0131] Specifically, the network device can judge information such as the channel quality of terminal A according to the uplink measurement reference signal sent by terminal A, and configure corresponding MCS information for terminal A according to the channel quality of terminal A.
[0132] Step 2. The network device sends the MCS information of the terminal A to the terminal A through the first downlink control signaling.
[0133] Wherein, the first downlink control signaling is composed of MCS information of terminal A.
[0134] Optionally, the network device may send the downlink control signaling to terminal A on pre-allocated resources.
[0135] Optionally, the network device may also determine the resourc...
Embodiment 2
[0148] A downlink control signaling is composed of MCS information corresponding to M terminals respectively, and M is an integer greater than or equal to 2, such as image 3 shown.
[0149] Step 1. The network device determines the MCS information corresponding to the M terminals respectively.
[0150] Wherein, the above M terminals include at least one terminal configured in the Grant-Free mode.
[0151] Specifically, the network device can determine information such as channel quality of each terminal by using the uplink measurement reference signal sent by each terminal, and configure corresponding MCS information for each terminal according to the channel quality of each terminal.
[0152] Step 2. The network device sends the determined MCS information to the M terminals through the second downlink control signaling.
[0153] Wherein, the second downlink control signaling is composed of MCS_1 corresponding to terminal 1, MCS_2 corresponding to terminal 2, ..., and MCS_M...
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Abstract
The application discloses a modulation and coding scheme (MCS) configuration method and apparatus. The method includes steps: network equipment determines MCS information respectively corresponding toat least one terminal and sends the determined at least one piece of MCS information to the at least one terminal through downlink control signaling, wherein the downlink control signaling is formedby the determined at least one piece of MCS information, and the at least one terminal comprises at least one terminal configured in a Grant-Free mode; and the terminal analyzes the MCS information corresponding to the terminal from the downlink control signaling. According to the method, when the Grant Free scheduling mechanism is adopted, the network equipment can also configure the MCS information for the terminal, and the signaling cost is not substantially increased.
Description
technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a modulation and coding strategy MCS configuration method. Background technique [0002] Future 5G applications will cover three categories of scenarios: Enhanced Mobile Broadband (eMBB), Ultra Reliable Low Latency Communication (URLLC) and Massive Machine Type Communication (mMTC) ). Among them, URLLC can be applied to unmanned driving, industrial automation and other services that require low-latency and highly reliable connections. For URLLC services, there are two basic requirements: one is the high latency requirements brought about by business emergencies, for example, the currently specified uplink and downlink user plane latency cannot exceed 0.5ms; the other is high reliability requirements, such as , with 99.999% reliability within 1ms. [0003] The grant-based uplink scheduling mechanism in the prior art, that is, the terminal first init...
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