Understanding IPSP (Internet Protocol support Profiles)

IPSP supports IPV6 packet switching between BLE devices;

• Allow devices that support IPSP to discover and communicate with each other;
• About IPV6 packet-based BLE transmission See document RFC7668 "IPv6 over ble"

The main framework is as follows:

Ipss,gatt,att is only used for service discovery, gap is used for device discovery and connection establishment;

IPSP defines two roles: Node role and Router role;

Router role is used for device routing IPv6 packets; Node role can only originate or consume IPv6 application packets;

A Node role shall support GAP peripheral Role;

A Router role shall support GAP central role;

A device may support both Node role and Router role;

Node Role Requirements:

GATT Server Role, IPSS (Service)

The IP Support service was used during service discovery to determine support for the IP support
Profile ' s Node role.

The service UUID shall is set to«internet Protocol support service»[0x1820]

L2cap Requirements:

In this profile, only the Le Connection oriented Channels feature with the le credits Based Flow
Control Mode shall be used.

Establish L2CAP connection: (after link layer connection established)

• LE Credit Based Connection Request packet format is:

The LE_PSM field of the specified Le credit Based Connection Request packet in IPSP is set to LE_PSM_IPSP (0x0023);

LE Credit Based Flow Control mode see section L2cap Spec 10

MTU size shall be octets or higher.

Understanding IPSP (Internet Protocol support Profiles)