CN-122029896-A - Communication parameter map-assisted fast wakeup and data transmission method for wireless communication using reference signal, and apparatus, system and non-transitory computer-readable storage device employing the same

Abstract

A method at a first communication node side for wireless communication with a second communication node, at least one of the first communication node and the second communication node being adapted for power consumption reduction of wireless communication related activities, the method having the steps of transmitting a wake-up signal to the second communication node, transmitting a downlink data signal to the second communication node, the downlink data signal comprising a demodulation reference signal having a predefined or preconfigured number of ports.

Inventors

• BI XIAOYAN
• MA JIANGLEI
• ZHANG HUAZI
• ZHU PEIYING
• TONG WEN
• TANG HAO

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20240118

Priority Date

20231010

Claims (20)

1. 1. A method at a first communication node side for wireless communication with a second communication node, wherein at least one of the first communication node and the second communication node is configured for power consumption reduction for wireless communication related activities, the method comprising: and transmitting a downlink data signal to the second communication node, wherein the downlink data signal comprises demodulation reference signals with a predefined or preconfigured port number.
2. 2. The method as recited in claim 1, further comprising: and sending a wake-up signal to the second communication node.
3. 3. The method according to claim 1 or 2, wherein said at least one of said first communication node and said second communication node with reduced power consumption is in a sleep state.
4. 4. A method according to any of claims 1 to 3, characterized in that the number of ports of the demodulation reference signal is predefined or preconfigured before the at least one of the first and second communication nodes with reduced power consumption reduces power consumption.
5. 5. The method according to any of claims 1 to 4, wherein at least one of the pattern of the demodulation reference signal, the sequence identifier of the demodulation reference signal and the port index of the demodulation reference signal is predefined or preconfigured before the at least one of the first and second communication nodes with reduced power consumption reduces power consumption.
6. 6. The method according to any of claims 1 to 5, wherein the downstream data signal comprises a channel state information reference signal having a predefined or preconfigured number of ports.
7. 7. The method of claim 6, wherein the number of ports of the channel state information reference signal is predefined or preconfigured before the at least one of the first communication node and the second communication node having reduced power consumption reduces power consumption.
8. 8. The method according to claim 6 or 7, wherein the number of ports of the channel state information reference signal is greater than or equal to the number of ports of the demodulation reference signal.
9. 9. The method according to any of claims 6 to 8, wherein at least one of the pattern of the channel state information reference signal, the sequence identifier of the channel state information reference signal and the port index of the channel state information reference signal is predefined or preconfigured before the at least one of the first communication node and the second communication node having reduced power consumption reduces power consumption.
10. 10. The method according to any one of claims 6 to 9, further comprising: obtaining one or more reference channels according to the communication parameter map; Obtaining one or more precoding matrices, each precoding matrix corresponding to a respective one of the one or more reference channels, each precoding matrix comprising a plurality of precoding vectors; Using the first M 1 precoding vectors of a first one of the one or more precoding matrices as precoding vectors of the demodulation reference signal and using the first M 2 precoding vectors of the first one of the one or more precoding matrices as precoding vectors of the channel state information reference signal; Wherein M 1 is equal to the number of ports of the demodulation reference signal, M 2 is equal to the number of ports of the channel state information reference signal, and M 2 >M 1 .
11. 11. The method according to any one of claims 6 to 9, further comprising: obtaining one or more reference channels according to the communication parameter map; Obtaining one or more precoding matrices, each precoding matrix corresponding to a respective one of the one or more reference channels, each precoding matrix comprising a plurality of precoding vectors; using the first M 1 precoding vectors of a first precoding matrix of the one or more precoding matrices as precoding vectors of the demodulation reference signal and using the first M 2 precoding vectors of a second precoding matrix of the one or more precoding matrices as precoding vectors of the channel state information reference signal; Wherein the first one of the one or more precoding matrices is a different precoding matrix than the second one of the one or more precoding matrices.
12. 12. The method according to any one of claims 1 to 11, further comprising: and sending a downlink control signal, wherein the downlink control signal comprises a trigger instruction for triggering channel measurement reporting from the second communication node.
13. 13. The method of claim 12, wherein the channel measurement report comprises one of: The channel quality indicator is an indicator of the channel quality, Channel quality indicator and rank indication, Channel quality indicator, rank indication, and precoding matrix indicator.
14. 14. The method according to claim 12 or 13, wherein the channel measurement report further comprises information related to the location of the second communication node.
15. 15. A method according to claim 13 or 14 when dependent on claim 6, wherein the channel quality indicator is obtained from the channel state information reference signal as an offset relative to a reference channel quality indicator point.
16. 16. The method of claim 15, wherein the reference channel quality indicator point is one of: A second channel quality indicator obtained from the demodulation reference signal; channel quality indicators corresponding to the current modulation and coding scheme level; A channel quality indicator, predefined or preconfigured before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption, corresponds to a modulation and coding scheme level in a channel quality indicator table.
17. 17. The method of claim 6 or any one of claims 7 to 16 when dependent on claim 6, further comprising: Before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption, a first indication is sent to the second communication node indicating whether to send the channel state information reference signal.
18. 18. The method of claim 17, wherein the first indication comprises a first bitmap.
19. 19. The method according to any one of claims 1 to 18, wherein said transmitting the downstream data signal to the second communication node comprises: Transmitting the downlink data signal to the second communication node using a first beam; Wherein the method further comprises: transmitting tracking reference signals and/or phase tracking reference signals to the second communication node using a second beam; wherein the first beam and the second beam are quasi co-located.
20. 20. The method as recited in claim 19, further comprising: Before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption, a second indication is sent to the second communication node indicating whether to send the tracking reference signal.

Description

Communication parameter map-assisted fast wakeup and data transmission method for wireless communication using reference signal, and apparatus, system and non-transitory computer-readable storage device employing the same Cross Reference to Related Applications The application claims the benefit of U.S. provisional patent application No. 63/543,375 filed 10 at 2023, 10, the entire contents of which are incorporated herein by reference. Technical Field The present invention relates generally to communication systems, apparatuses, methods and non-transitory computer readable storage devices, and more particularly to a communication parameter map-assisted fast wakeup and data transfer method for wireless communication using a reference signal, and apparatuses, systems and non-transitory computer readable storage devices employing the fast wakeup and data transfer method. Background Wireless communication systems such as mobile communication systems are well known. In wireless communication systems, power consumption is often an important concern, especially for User Equipment (UE). For example, in existing mobile communication systems such as the fifth generation (fifth-generation, 5G)/New Radio (NR), a communication node (e.g., UE) with reduced activity or no activity (e.g., when the node has no data to receive from or transmit to other nodes) may enter an inactive or idle state to save power. However, waking up a UE in an inactive or idle state typically requires the UE to perform many steps that may result in significant power consumption and/or increased latency. In addition, the UE in the connected state can also enter different power consumption modes with different power consumption levels, such as deep sleep, light sleep, micro sleep, etc. On the network side, a Base Station (BS), also called a transmission-and-reception point (TRP), may also enter a sleep mode to save power. Similarly, waking up a TRP in sleep mode may require the TRP to perform many steps that may result in significant power consumption and/or increased latency. With the development of communication technology, energy conservation may be a fundamental design requirement. Thus, there is a need for novel methods of waking up a UE and/or TRP with further reduced power consumption. Disclosure of Invention Embodiments of the present invention relate to systems, apparatuses, methods and non-transitory computer-readable storage devices employing fast wake-up and data transmission methods for wireless communications. According to one aspect of the present invention there is provided a first method at a first communication node side for wireless communication with a second communication node, at least one of the first communication node and the second communication node being for power consumption reduction of wireless communication related activities, the first method comprising transmitting a downlink data signal to the second communication node, the downlink data signal comprising a demodulation reference signal having a predefined or preconfigured number of ports. In some embodiments, the first method further comprises sending a wake-up signal to the second communication node. In some embodiments, the at least one of the first communication node and the second communication node with reduced power consumption is in a sleep state. In some embodiments, the number of ports of the demodulation reference signal is predefined or preconfigured before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption. In some embodiments, the number of ports of the demodulation reference signal is 1,2, or 4. In some embodiments, at least one of the pattern of the demodulation reference signal, the sequence identifier of the demodulation reference signal, and the port index of the demodulation reference signal is predefined or preconfigured before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption. In some embodiments, the downstream data signal comprises a channel state information reference signal having a predefined or preconfigured number of ports. In some embodiments, the number of ports of the channel state information reference signal is predefined or preconfigured before the at least one of the first communication node and the second communication node with reduced power consumption reduces power consumption. In some embodiments, the number of ports of the channel state information reference signal is greater than or equal to the number of ports of the demodulation reference signal. In some embodiments, the number of ports of the channel state information reference signal is 1, 2, or 4. In some embodiments, at least one of the pattern of the channel state information reference signal, the sequence identifier of the channel state information reference signal, and the port index of