RDK BLE Voice

BLE RDK Voice Service Specification
RDK-SP-BLE-RV-Service-D02-200110
Document Status: Draft
January 20, 2019
Document Status

Document Status Codes
Work in Progress (W)An incomplete document designed to guide discussion and generate feedback that may include several alternative requirements for consideration.
Draft (D)A document in specification format considered largely complete, but lacking review. Drafts are susceptible to substantial change during the review process.
Issued (I)A stable document that has undergone rigorous review and is suitable for product design and development. It will serve as a basis for testing requirements.

Table of Contents
1. Introduction
1.1 Overview
1.2 Purpose of Document
1.3 Typographical Conventions
1.4 Revision History
2 References
2.1 Normative References
3 Terms and Definitions
4 Abbreviations and Acronyms
5 Introduction
5.1 Conformance
5.2 Service Dependency
5.3 Bluetooth Specification Release Compatibility
5.4 GATT Sub-Procedure Requirements
5.5 Transport Dependencies
5.6 Error Codes
5.7 Byte Transmission Order
6 Service Requirements
6.1 Service Declaration
6.2 Service Roles
6.3 Service Sequence Examples
6.3.1 Push-to-talk Voice Session Sequence
6.3.2 Explicitly Rejected Push-to-talk Voice Session Sequence
6.3.3 Far-Field Voice Session Sequence
6.4 Characteristic Overview
6.5 Audio Codecs Characteristic
6.5.1 Audio Codecs Characteristic Value
6.6 Audio Gain Characteristic
6.6.1 Audio Gain Characteristic Value
6.7 Audio Control Characteristic
6.7.1 Audio Control Characteristic Value
6.7.2 Audio Control Encoding Value
6.7.3 Audio Control Enable Value
6.7.4 Audio Control Enable Behaviour
6.8 Audio Response Characteristic
6.8.1 Audio Response Characteristic Value
6.8.2 Audio Response Characteristic Behaviour
6.9 Keyword Detect Characteristic
6.9.1 Keyword Detect Characteristic Descriptors
6.9.1.1 Client Characteristic Configuration Descriptor
6.9.2 Keyword Detect Characteristic Value
6.9.3 Keyword Detect Characteristic Behaviour
6.10 Beamformer Data Characteristic
6.10.1 Beamformer Data Characteristic Value
6.10.1.1 Beam Data Field
6.10.1.2 Client Characteristic Configuration Descriptor
6.10.2 Beamformer Data Characteristic Behaviour
6.11 Audio Data Characteristic
6.11.1 Audio Data Characteristic Descriptors
6.11.1.1 Client Characteristic Configuration Descriptor
6.11.2 Audio Data Characteristic Value
6.11.2.1 G.726 and IMA/DVI ADPCM Frame Format
6.11.2.2 Audio Frame Buffering

Tables
Table 1 - Typographical Conventions
Table 2 - Terms and Definitions
Table 3 - Abbreviations and Acronyms
Table 4 - GATT Sub-Procedure Requirement
Table 5 - Voice Service Characteristics
Table 6 - Audio Codecs Supported Bit Mask
Table 7 - Audio Control Characteristic Value
Table 8 - Audio Control Characteristic Encoding Values
Table 9 - Audio Control Characteristic Enable Values
Table 10 - Audio Response Values
Table 11 - Audio Keyword Detect Characteristic
Table 12 - Audio Beamformer Characteristic
Table 13 - Beam Data Field
Table 14 - Beam Description Byte
Table 15 - Audio Frame Metadata Format

Figures
Figure 2 – Push-to-talk Voice Session
Figure 3 - Explicit Reject of Voice Session
Figure 4 - Far-Field Voice Session
Figure 5 - G.726 and IMA/DVI ADPCM Frame Format
Figure 6 - G.726 and IMA/DVI ADPCM Frame Metadata