Generic Attribute Profile

(TCRL 2023-1, GATT.ICS.p17)

Roles

Table 1: Role Requirements

Parameter Name	Selected	Description
TSPC_GATT_1_1	x	Generic Attribute Profile (GATT) Client (C.1)
TSPC_GATT_1_2	x	Generic Attribute Profile (GATT) Server (C.1)

• C.1: Mandatory to support at least one.

Transports

Table 1a: Transport Requirements

Parameter Name	Selected	Description
TSPC_GATT_1a_1	x	GATT Client over LE (C.1)
TSPC_GATT_1a_2		GATT Client over BR/EDR (C.1)
TSPC_GATT_1a_3	x	GATT Server over LE (C.2)
TSPC_GATT_1a_4		GATT Server over BR/EDR (C.2)

• C.1: Mandatory to support at least one IF GATT 1/1 “Generic Attribute Profile (GATT) Client”, otherwise Excluded.

• C.2: Mandatory to support at least one IF GATT 1/2 “Generic Attribute Profile (GATT) Server”, otherwise Excluded.

Transports

Table 2: Attribute Protocol Transport Requirements

Parameter Name	Selected	Description
TSPC_GATT_2_1		Unenhanced ATT bearer over BR/EDR (C.1)
TSPC_GATT_2_2	x	Unenhanced ATT bearer over LE (C.2)
TSPC_GATT_2_3a		Enhanced ATT bearer over LE (C.4, C.3)
TSPC_GATT_2_3b		Enhanced ATT bearer over BR/EDR (C.1, C.3)
TSPC_GATT_2_4	x	Attribute Protocol Client (C.6)
TSPC_GATT_2_5	x	Attribute Protocol Server (C.7)

• C.1: Mandatory to support at least one IF GATT 1a/2 “GATT Client over BR/EDR” OR GATT 1a/4 “GATT Server over BR/EDR”, otherwise not defined.

• C.2: Mandatory IF GATT 1a/1 “GATT Client over LE” OR GATT 1a/3 “GATT Server over LE”, otherwise not defined.

• C.3: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0” OR SUM ICS 31/20 “Core v5.1”, otherwise Optional.

• C.4: Optional IF GATT 2/2 “Unenhanced ATT bearer over LE”, otherwise not defined.

• C.6: Mandatory IF GATT 1/1 “Generic Attribute Profile (GATT) Client”, otherwise not defined.

• C.7: Mandatory IF GATT 1/2 “Generic Attribute Profile (GATT) Server”, otherwise not defined.

GATT Features

Table 3: Generic Attribute Profile Feature Support, by Client

Prerequisite: GATT 1/1 “Generic Attribute Profile (GATT) Client”

Parameter Name	Selected	Description
TSPC_GATT_3_1	x	Exchange MTU (C.11)
TSPC_GATT_3_2	x	Discover All Primary Services (O)
TSPC_GATT_3_3	x	Discover Primary Services by Service UUID (O)
TSPC_GATT_3_4	x	Find Included Services (O)
TSPC_GATT_3_5	x	Discover All Characteristics of a Service (O)
TSPC_GATT_3_6	x	Discover Characteristics by UUID (O)
TSPC_GATT_3_7		Discover All Characteristic Descriptors (O)
TSPC_GATT_3_8	x	Read Characteristic Value (O)
TSPC_GATT_3_9	x	Read Using Characteristic UUID (O)
TSPC_GATT_3_10	x	Read Long Characteristic Values (O)
TSPC_GATT_3_11		Read Multiple Characteristic Values (O)
TSPC_GATT_3_12	x	Write without Response (O)
TSPC_GATT_3_13		Signed Write Without Response (C.11)
TSPC_GATT_3_14	x	Write Characteristic Value (O)
TSPC_GATT_3_15	x	Write Long Characteristic Values (O)
TSPC_GATT_3_16		Characteristic Value Reliable Writes (O)
TSPC_GATT_3_17	x	Notifications (C.7)
TSPC_GATT_3_18	x	Indications (M)
TSPC_GATT_3_19	x	Read Characteristic Descriptors (O)
TSPC_GATT_3_20	x	Read Long Characteristic Descriptors (O)
TSPC_GATT_3_21	x	Write Characteristic Descriptors (O)
TSPC_GATT_3_22	x	Write Long Characteristic Descriptors (O)
TSPC_GATT_3_23	x	Service Changed Characteristic (M)
TSPC_GATT_3_24		Configured Broadcast (C.2)
TSPC_GATT_3_25		Client Supported Features Characteristic (C.4)
TSPC_GATT_3_25a		Enabling Robust Caching (C.12)
TSPC_GATT_3_26		Database Hash Characteristic (C.4)
TSPC_GATT_3_27		Read and Interpret Characteristic Presentation Format (O)
TSPC_GATT_3_28		Read and Interpret Characteristic Aggregate Format (C.6)
TSPC_GATT_3_29		Read Multiple Variable Length Characteristic Values (C.9)
TSPC_GATT_3_30		Multiple Variable Length Notifications (C.10)

• M: Mandatory

• O: Optional

• C.2: Optional IF GATT 3/14 “Write Characteristic Value”, otherwise Excluded.

• C.4: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0”, otherwise Optional.

• C.6: Optional IF GATT 3/27 “Read and Interpret Characteristic Presentation Format”, otherwise Excluded.

• C.7: Mandatory IF GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.9: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0” OR SUM ICS 31/20 “Core v5.1”, otherwise Optional.

• C.10: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0” OR SUM ICS 31/20 “Core v5.1”, otherwise Mandatory IF GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.11: Optional IF GATT 1a/1 “GATT Client over LE”, otherwise Excluded.

• C.12: Optional IF GATT 3/25 “Client Supported Features Characteristic”, otherwise Excluded.

GATT Features

Table 3a: GAP Role Requirements for GATT Client

Prerequisite: GATT 1a/1 “GATT Client over LE”

Parameter Name	Selected	Description
TSPC_GATT_3a_1		Peripheral (O)
TSPC_GATT_3a_2		Central (O)

• O: Optional

GATT Features

Table 4: Generic Attribute Profile Feature Support, by Server

Prerequisite: GATT 1/2 “Generic Attribute Profile (GATT) Server”

Parameter Name	Selected	Description
TSPC_GATT_4_1	x	Exchange MTU (C.6)
TSPC_GATT_4_2	x	Discover All Primary Services (M)
TSPC_GATT_4_3	x	Discover Primary Services by Service UUID (M)
TSPC_GATT_4_4	x	Find Included Services (M)
TSPC_GATT_4_5	x	Discover All Characteristics of a Service (M)
TSPC_GATT_4_6	x	Discover Characteristics by UUID (M)
TSPC_GATT_4_7	x	Discover All Characteristic Descriptors (M)
TSPC_GATT_4_8	x	Read Characteristic Value (M)
TSPC_GATT_4_9	x	Read Using Characteristic UUID (M)
TSPC_GATT_4_10	x	Read Long Characteristic Values (C.12)
TSPC_GATT_4_11	x	Read Multiple Characteristic Values (O)
TSPC_GATT_4_12	x	Write without Response (C.2)
TSPC_GATT_4_13		Signed Write Without Response (C.6)
TSPC_GATT_4_14	x	Write Characteristic Value (C.3)
TSPC_GATT_4_15	x	Write Long Characteristic Values (C.12)
TSPC_GATT_4_16		Characteristic Value Reliable Writes (O)
TSPC_GATT_4_17	x	Notifications (O)
TSPC_GATT_4_18	x	Indications (C.1)
TSPC_GATT_4_19	x	Read Characteristic Descriptors (C.12)
TSPC_GATT_4_20	x	Read Long Characteristic Descriptors (C.12)
TSPC_GATT_4_21	x	Write Characteristic Descriptors (C.12)
TSPC_GATT_4_22	x	Write Long Characteristic Descriptors (O)
TSPC_GATT_4_23	x	Service Changed Characteristic (C.14)
TSPC_GATT_4_24		Configured Broadcast (C.5)
TSPC_GATT_4_25	x	Execute Write Request with empty queue (C.7)
TSPC_GATT_4_26		Client Supported Features Characteristic (C.9)
TSPC_GATT_4_27		Database Hash Characteristic (C.8)
TSPC_GATT_4_28		Report Characteristic Value: Characteristic Presentation Format (O)
TSPC_GATT_4_29		Report aggregate Characteristic Value: Characteristic Aggregate Format (C.10)
TSPC_GATT_4_30		Read Multiple Variable Length Characteristic Values (C.13)
TSPC_GATT_4_31		Multiple Variable Length Notifications (C.13)

• M: Mandatory

• O: Optional

• C.1: Mandatory IF GATT 4/23 “Service Changed Characteristic”, otherwise Optional.

• C.2: Mandatory IF GATT 4/13 “Signed Write Without Response” OR GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.3: Mandatory IF GATT 4/15 “Write Long Characteristic Values” OR GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.5: Optional IF GATT 4/14 “Write Characteristic Value”, otherwise Excluded.

• C.6: Optional IF GATT 1a/3 “GATT Server over LE”, otherwise Excluded.

• C.7: Optional IF (SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS”) AND (GATT 4/15 “Write Long Characteristic Values” OR GATT 4/16 “Characteristic Value Reliable Writes” OR GATT 4/22 “Write Long Characteristic Descriptors”), otherwise Mandatory IF GATT 4/15 “Write Long Characteristic Values” OR GATT 4/16 “Characteristic Value Reliable Writes” OR GATT 4/22 “Write Long Characteristic Descriptors”, otherwise Excluded.

• C.8: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0”, otherwise Optional.

• C.9: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0”, otherwise Mandatory IF GATT 4/23 “Service Changed Characteristic” AND GATT 4/27 “Database Hash Characteristic”, otherwise Excluded.

• C.10: Optional IF GATT 4/28 “Report Characteristic Value: Characteristic Presentation Format”, otherwise Excluded.

• C.12: Mandatory IF GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.13: Excluded IF SUM ICS 31/17 “Core v4.2” OR SUM ICS 31/18 “Core v4.2+HS” OR SUM ICS 31/19 “Core v5.0” OR SUM ICS 31/20 “Core v5.1”, otherwise Mandatory IF GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.14: Mandatory IF service definitions on the server can be added, changed, or removed, otherwise Optional.

GATT Features

Table 4a: GAP Role Requirements for GATT Server

Prerequisite: GATT 1a/3 “GATT Server over LE”

Parameter Name	Selected	Description
TSPC_GATT_4a_1		Peripheral (O)
TSPC_GATT_4a_2		Central (O)

• O: Optional

SDP requirements

Table 6: SDP Interoperability

Prerequisite: GATT 2/1 “Unenhanced ATT bearer over BR/EDR” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”

Parameter Name	Selected	Description
TSPC_GATT_6_2		Client (C.1)
TSPC_GATT_6_3		Server (C.2)
TSPC_GATT_6_4		ProtocolDescriptorList (C.2)
TSPC_GATT_6_5		BrowseGroupList (C.2)

• C.1: Optional IF GATT 1a/2 “GATT Client over BR/EDR”, otherwise not defined.

• C.2: Mandatory IF GATT 1a/4 “GATT Server over BR/EDR”, otherwise not defined.

GAP requirements

Table 7: GAP Requirements

Parameter Name	Selected	Description
TSPC_GATT_7_2	x	LE security mode 1 (C.2)
TSPC_GATT_7_3	x	LE security mode 2 (C.2)
TSPC_GATT_7_4	x	Authentication procedure (C.2)
TSPC_GATT_7_5		Connection data signing procedure (C.2)
TSPC_GATT_7_6		Authenticate signed data procedure (C.2)
TSPC_GATT_7_7	x	Authorization procedure (C.2)

• C.2: Optional IF GATT 2/2 “Unenhanced ATT bearer over LE”, otherwise not defined.

Multiple Bearer Support

Table 8: Multiple Simultaneous ATT Bearers

Parameter Name	Selected	Description
TSPC_GATT_8_1		Support for multiple simultaneous active ATT bearers from same device - ATT over LE and ATT over BR/EDR (C.1)
TSPC_GATT_8_2		Support for multiple simultaneous active ATT bearers from same device - ATT over LE and EATT over LE (C.2)
TSPC_GATT_8_3		Support for multiple simultaneous active ATT bearers from same device - ATT over BR/EDR and EATT over BR/EDR (C.3)
TSPC_GATT_8_4		Support for multiple simultaneous active ATT bearers from same device - ATT over LE and EATT over BR/EDR (C.4)
TSPC_GATT_8_5		Support for multiple simultaneous active ATT bearers from same device - ATT over BR/EDR and EATT over LE (C.5)
TSPC_GATT_8_6		Support for multiple simultaneous active EATT bearers from same device - EATT over BR/EDR and EATT over LE (C.6)
TSPC_GATT_8_7		Support for multiple simultaneous active EATT bearers from same device - EATT over BR/EDR (C.7)
TSPC_GATT_8_8		Support for multiple simultaneous active EATT bearers from same device - EATT over LE (C.7)

• C.1: Optional IF GATT 2/1 “Unenhanced ATT bearer over BR/EDR” AND GATT 2/2 “Unenhanced ATT bearer over LE”, otherwise Excluded.

• C.2: Optional IF GATT 2/2 “Unenhanced ATT bearer over LE” AND GATT 2/3a “Enhanced ATT bearer over LE”, otherwise Excluded.

• C.3: Optional IF GATT 2/1 “Unenhanced ATT bearer over BR/EDR” AND GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Excluded.

• C.4: Optional IF GATT 2/2 “Unenhanced ATT bearer over LE” AND GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Excluded.

• C.5: Optional IF GATT 2/1 “Unenhanced ATT bearer over BR/EDR” AND GATT 2/3a “Enhanced ATT bearer over LE”, otherwise Excluded.

• C.6: Optional IF GATT 2/3a “Enhanced ATT bearer over LE” AND GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Excluded.

• C.7: Optional IF GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Excluded.

ATT requirements

Table 9: Attribute Protocol Client Requirements

Prerequisite: GATT 1/1 “Generic Attribute Profile (GATT) Client”

Parameter Name	Selected	Description
TSPC_GATT_9_1	x	Exchange MTU Request (C.1)
TSPC_GATT_9_2	x	Find Information Request (C.2)
TSPC_GATT_9_3	x	Find by Type Value Request (C.3)
TSPC_GATT_9_4	x	Read by Type Request (C.4)
TSPC_GATT_9_5	x	Read Request (C.5)
TSPC_GATT_9_6	x	Read Blob Request (C.6)
TSPC_GATT_9_7		Read Multiple Request (C.7)
TSPC_GATT_9_8	x	Write Request (C.8)
TSPC_GATT_9_9	x	Write Command (C.9)
TSPC_GATT_9_10		Signed Write Command (C.10)
TSPC_GATT_9_11	x	Prepare Write Request (C.11)
TSPC_GATT_9_12	x	Handle Value Notification (C.12)
TSPC_GATT_9_13	x	Handle Value Indication (C.13)
TSPC_GATT_9_14		Read Multiple Variable Length Request (C.14)
TSPC_GATT_9_15		Handle Value Multiple Notification (C.15)

• C.1: Mandatory IF GATT 3/1 “Exchange MTU”, otherwise not defined.

• C.2: Mandatory IF GATT 3/7 “Discover All Characteristic Descriptors”, otherwise not defined.

• C.3: Mandatory IF GATT 3/3 “Discover Primary Services by Service UUID”, otherwise not defined.

• C.4: Mandatory IF GATT 3/9 “Read Using Characteristic UUID”, otherwise not defined.

• C.5: Mandatory IF GATT 3/8 “Read Characteristic Value” OR GATT 3/19 “Read Characteristic Descriptors”, otherwise not defined.

• C.6: Mandatory IF GATT 3/10 “Read Long Characteristic Values” OR GATT 3/20 “Read Long Characteristic Descriptors”, otherwise not defined.

• C.7: Mandatory IF GATT 3/11 “Read Multiple Characteristic Values”, otherwise not defined.

• C.8: Mandatory IF GATT 3/14 “Write Characteristic Value” OR GATT 3/21 “Write Characteristic Descriptors”, otherwise not defined.

• C.9: Mandatory IF GATT 3/12 “Write without Response”, otherwise not defined.

• C.10: Mandatory IF GATT 3/13 “Signed Write Without Response”, otherwise not defined.

• C.11: Mandatory IF GATT 3/15 “Write Long Characteristic Values” OR GATT 3/16 “Characteristic Value Reliable Writes” OR GATT 3/22 “Write Long Characteristic Descriptors”, otherwise not defined.

• C.12: Mandatory IF GATT 3/17 “Notifications”, otherwise Optional.

• C.13: Mandatory IF GATT 3/18 “Indications”, otherwise not defined.

• C.14: Mandatory IF GATT 3/29 “Read Multiple Variable Length Characteristic Values”, otherwise not defined.

• C.15: Mandatory IF GATT 3/30 “Multiple Variable Length Notifications”, otherwise not defined.

ATT requirements

Table 10: Attribute Protocol Server Requirements

Prerequisite: GATT 1/2 “Generic Attribute Profile (GATT) Server”

Parameter Name	Selected	Description
TSPC_GATT_10_1	x	Exchange MTU Request (C.1)
TSPC_GATT_10_2	x	Read Blob Request (C.2)
TSPC_GATT_10_3		Read Multiple Request (C.3)
TSPC_GATT_10_4	x	Write Request (C.4)
TSPC_GATT_10_5	x	Write Command (C.5)
TSPC_GATT_10_6		Signed Write Command (C.6)
TSPC_GATT_10_7	x	Prepare Write Request (C.7)
TSPC_GATT_10_8	x	Handle Value Notification (C.8)
TSPC_GATT_10_9	x	Handle Value Indication (C.9)
TSPC_GATT_10_10		Execute Write Request with no pending prepared write values (C.10)
TSPC_GATT_10_11		Read Multiple Variable Length Request (C.11)
TSPC_GATT_10_12		Handle Value Multiple Notification (C.12)

• C.1: Mandatory IF GATT 4/1 “Exchange MTU”, otherwise not defined.

• C.2: Mandatory IF GATT 4/10 “Read Long Characteristic Values”, otherwise not defined.

• C.3: Mandatory IF GATT 4/11 “Read Multiple Characteristic Values”, otherwise Optional.

• C.4: Mandatory IF GATT 4/14 “Write Characteristic Value” OR GATT 4/21 “Write Characteristic Descriptors”, otherwise Optional.

• C.5: Mandatory IF GATT 4/12 “Write without Response”, otherwise Optional.

• C.6: Mandatory IF GATT 4/13 “Signed Write Without Response”, otherwise Optional.

• C.7: Mandatory IF GATT 4/15 “Write Long Characteristic Values” OR GATT 4/16 “Characteristic Value Reliable Writes” OR GATT 4/22 “Write Long Characteristic Descriptors” OR GATT 2/3a “Enhanced ATT bearer over LE” OR GATT 2/3b “Enhanced ATT bearer over BR/EDR”, otherwise Optional.

• C.8: Mandatory IF GATT 4/17 “Notifications”, otherwise Optional.

• C.9: Mandatory IF GATT 4/18 “Indications”, otherwise Optional.

• C.10: Mandatory IF GATT 4/25 “Execute Write Request with empty queue” AND SUM ICS 31/19 “Core v5.0”, otherwise Optional.

• C.11: Mandatory IF GATT 4/30 “Read Multiple Variable Length Characteristic Values”, otherwise Optional.

• C.12: Mandatory IF GATT 4/31 “Multiple Variable Length Notifications”, otherwise Optional.