Communications Device Service Preference Indication Bandwidth Parts
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Solution Overview
Problem
Future wireless communications networks face challenges in efficiently supporting a wide range of devices with different data traffic profiles, particularly in providing simultaneous Ultra Reliable Low Latency Communications (URLLC) services alongside other services, due to limitations in bandwidth parts capabilities of communications devices.
Innovation Solution
A method where a communications device transmits a service preference indication (SPI) to infrastructure equipment, requesting the provision of multiple services based on its bandwidth parts capability, allowing the device to receive and decode data from different bandwidth parts sequentially rather than simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a communications device attempts to receive and decode data from multiple bandwidth parts simultaneously, then the network can provide multiple services (multicast/broadcast and unicast) with high data rates, but the device complexity and power consumption increase beyond the device's capability
Solution Approach 1:
The patent implements dynamic service preference indication where the device can signal its current capability state to the network. The network then dynamically adapts its service provisioning strategy based on this indication, switching between simultaneous service delivery (when device supports multiple BWPs) and sequential service delivery (when device supports only one BWP). This dynamic adaptation resolves the contradiction by matching network behavior to actual device capabilities.
Solution Approach 2:
The patent changes the operational parameter from simultaneous data reception on multiple bandwidth parts to sequential data reception. By transmitting a service preference indication, the device requests the network to deliver services in sequence rather than simultaneously, adapting the data transmission timing parameter to match the device's single-BWP reception capability while still enabling multiple services to be provided.
2Reliability
If the network provides multiple services simultaneously to all devices, then service coverage and availability are improved, but devices with limited bandwidth parts capability cannot receive and decode the data
Solution Approach 1:
The network dynamically adjusts its service delivery mechanism based on the service preference indication received from the device. When the indication shows the device supports only a single BWP, the network switches to sequential service delivery, first delivering one service then another, ensuring the device can successfully receive and decode data while still providing multiple services.
Solution Approach 2:
The patent segments the service delivery process into separate time intervals, with each service being delivered in its own time slot. This segmentation allows the network to provide multiple services to devices with limited capability by delivering them sequentially rather than simultaneously, ensuring each service can be properly received and decoded.
3Ease of operation
If the network delivers services sequentially on different bandwidth parts, then devices with single BWP capability can receive services, but the time required to deliver multiple services increases
Solution Approach 1:
The system dynamically selects the service delivery mode based on device capability. Devices capable of simultaneous multi-BWP reception receive services in parallel with minimal time loss, while devices with single-BWP capability receive services sequentially. This dynamic selection optimizes the balance between device compatibility and service delivery speed for different device types.
Solution Approach 2:
The patent accepts that sequential service delivery takes longer than simultaneous delivery but ensures complete service provision to all devices regardless of capability. Rather than attempting to optimize for speed at the expense of compatibility, the system delivers the full set of services to every device, accepting the time penalty only when necessary for device compatibility.
Data Source
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AI summary
A method of requesting, by a communications device, the provision of a first service and a second service in a wireless communications network, the method comprising transmitting to an infrastructure equipment of the wireless communications network a service preference indication (SPI), the SPI requesting the infrastructure equipment to provide to the communications device the first service and the second service in accordance with a bandwidth parts capability of the communications device, wherein in accordance with the bandwidth parts capability, the communications device is unable to receive and decode first data transmitted using a first bandwidth part of a carrier bandwidth of a wireless access interface provided by the infrastructure and second data transmitted using a second bandwidth part of the carrier bandwidth, if the first data and the second data are transmitted simultaneously.